{"id":921,"date":"2021-05-15T16:01:45","date_gmt":"2021-05-15T16:01:45","guid":{"rendered":"https:\/\/opentextbc.ca\/autodesk\/chapter\/modifying-solid-models\/"},"modified":"2021-11-05T17:27:41","modified_gmt":"2021-11-05T17:27:41","slug":"modifying-solid-models","status":"publish","type":"chapter","link":"https:\/\/opentextbc.ca\/autodesk\/chapter\/modifying-solid-models\/","title":{"raw":"Module 20 Modifying Solid Models","rendered":"Module 20 Modifying Solid Models"},"content":{"raw":"
\n

Learning Outcomes<\/p>\n\n<\/header>\n

\n\nWhen you have completed this module, you will be able to:\n
    \n \t
  1. Describe how to edit the dimensions and part features of an existing solid model using the Browser bar to aid you.<\/li>\n \t
  2. Describe how to hide and\/or suppress features in the solid model.<\/li>\n \t
  3. Describe and apply the MEASURE command to measure lengths, loops, angles, or areas of a solid model in either two dimensions or three dimensions.<\/li>\n \t
  4. Describe how to set the material and change the colour of faces of the solid model.<\/li>\n \t
  5. Describe how to obtain the physical properties of a solid model.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

    Modifying Solid Models<\/h1>\nThe ability to modify solid models is as important to the drafter\/designer as being able to construct models. Since most parts are modified after the initial design or revised and used in another project, it is very important that you can modify solid models rather then redraw them. The true power of Inventor is its ability to modify a solid and have it conform to the geometrical and dimensional constraints applied to it when it was constructed without having to redraw it. In this module, the basics of modifying solid models is taught. The Inventor Advanced book will cover the more advanced methods of modifying solid models.\n

    Working with the Browser Bar<\/h2>\nThe Browser bar is used extensively as a tool to assist you when modifying solid models. It displays the work features and the part features for the current part.\n

    Features<\/h2>\nWork features<\/em> <\/span>are the basic sketching planes (XY, XZ, YZ), the axes (X, Y, Z) and the Center Point as shown in Figure 20-1. Part features<\/span><\/em> are the 3D features added to the solid model in model construction. The part features for the active part are shown in Figure 20-2.\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"199\"]\"\" Figure 20-1
    Work Features[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"193\"]\"\" Figure 20-2
    Part Features[\/caption]\n

    Edges and Faces<\/h2>\nEdges<\/span> <\/em>are the lines, circles, or arcs located between the planes that form the solid model. Faces are the planes between the edges of the solid. A face can also be circular or cylindrical in shade, for example the hole in the model. Figure 20-3 shows each visible face of a solid model in a different colour.\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure 20-3
    Edges and Faces[\/caption]\n

    WORK ALONG: Modifying a Solid Model<\/h1>\n

    Step 1<\/h2>\nOpen the part file: Inventor Workalong 20-1.ipt<\/span>. This is one of the parts that you received when you download your book. It should be in the folder: Lab Exercise<\/span>. (Figure Step 1A and 1B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"234\"]\"\" Figure Step 1A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"243\"]\"\" Figure Step 1B[\/caption]\n

    Step 2<\/h2>\nThe Filter icon located at the top of the Browser bar allows you to enable or disable the visibility of the features in the Browser bar. Click the Filter icon. The filter list will display. (Figure Step 2A and 2B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"25\"]\"\" Figure Step 2A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"244\"]\"\" Figure Step 2B[\/caption]\n

    Step 3<\/h2>\nClick Hide Work Features to enable it. The work features are now hidden for the current part. (Figure Step 3A and 3B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"259\"]\"\" Figure Step 3A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"256\"]\"\" Figure Step 3B[\/caption]\n

    Step 4<\/h2>\nSince you want the work features to display most of the time, click the Filter icon again and disable the Hide Work Features. (Figure Step 4)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"244\"]\"\" Figure Step 4[\/caption]\n

    Step 5<\/h2>\nThe Part icon is the first icon inside the Browser bar window. It displays the name of the active part. (Figure Step 5)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"165\"]\"\" Figure Step 5[\/caption]\n

    Step 6<\/h2>\nRight-click the part name. In the Right-click menu, click Expand All Children. Note how all the folders and part features will expand to display every feature in the current part. Right click the menu again and this time, click Collapse All Children. (Figure Step 6A, 6B, and 6C)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"244\"]\"\" Figure Step 6A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"243\"]\"\" Figure Step 6B[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"249\"]\"\" Figure Step 6C[\/caption]\n

    Step 7<\/h2>\nRight-click the part feature Extrusion1. In the Right-click menu, click Show Dimensions. Note how the 2D sketch dimensions and the extrusion dimension will display on the model. (Figure Step 7)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"500\"]\"\"<\/a> Figure Step 7 [Click to see image full size][\/caption]\n

    Step 8<\/h2>\nRight-click Extrusion1 again. In the Right-click menu, click Edit Sketch. The Graphic window will change to Sketch mode and display the sketch. (Figure Step 8)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"378\"]\"\" Figure Step 8[\/caption]\n

    Step 9<\/h2>\nDouble click any dimension in the sketch and the Edit Dimension dialogue box will open as shown in the figure. You could now change the dimension, if required, which in turn will change the size of the model. Close the dialogue box without making any changes and return to Model mode. (Figure Step 9)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"292\"]\"\" Figure Step 9[\/caption]\n

    Step 10<\/h2>\nRight-click Extrusion1. In the right-click menu, click Edit Feature. Since this feature is an extrusion, the Extrude dialogue box will open. If required, the extrude feature could be edited. Click the Cancel button to close it. (Figure Step 10A and 10B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"253\"]\"\" Figure Step 10A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"500\"]\"\"<\/a> Figure Step 10B [Click to see image full size][\/caption]\n

    Step 11<\/h2>\nRight-click Extrusion3 as shown in the figure. In the right-click menu, click Find in Window. Note how the extrude on the left side will fully display in the window. This is a handy feature to use when your part is complicated or if you are using a part you are not familiar with. (Figure Step 11)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"275\"]\"\" Figure Step 11[\/caption]\n

    Step 12<\/h2>\nUsing what you learned in Steps 8 to 11, edit the sketch in Extrusion1 to match the dimensions shown in the figure. When you are done, click Finish Sketch to return to Model mode and the model will resize to reflect the changes you made to the dimensions. (Figure Step 12)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"457\"]\"\" Figure Step 12[\/caption]\n

    Step 13<\/h2>\nEdit Extrusion1 to change the extrusion depth from 3 inches to 4 inches. Click OK. (Figure Step 13)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"500\"]\"\"<\/a> Figure Step 13 [Click to see image full size][\/caption]\n

    Step 14<\/h2>\nEdit the dimensions in the sketch for the part feature Extrusion4 to the dimensions shown in the figure. Return to Model mode. (Figure Step 14A and 14B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"340\"]\"\" Figure Step 14A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"293\"]\"\" Figure Step 14B[\/caption]\n

    Step 15<\/h2>\nSince Sketch1 is an unconsumed sketch, it can be deleted. Select it and right click it. In the Right-click menu, select Delete. (Figure Step 15)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"246\"]\"\" Figure Step 15[\/caption]\n\n
    AUTHOR'S COMMENTS:<\/strong> The names of the part features in the Browser bar can be renamed to names that make more sense to the user. To change a name, click the existing name twice in the Browser bar and it will change to edit mode.<\/div>\n

    Step 16<\/h2>\nExpand the children. Change the name of Sketch2 to Base Sketch - Front View. (Figure Step 16A and 16B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"272\"]\"\" Figure Step 16A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"251\"]\"\" Figure Step 16B[\/caption]\n

    Step 17<\/h2>\nChange the names of all the part features and their children to match the names in the figure. Change the name of the part to: Inventor Workalong 20-1 Finished.ipt<\/span> as shown in the figure. (Figure Step 17)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"281\"]\"\" Figure Step 17[\/caption]\n\n
    AUTHOR'S COMMENTS:<\/strong> When you edit the name of the file in the Browser bar, it will NOT change the name of the current file. When you save the file, it will be saved with it original name.<\/div>\n
    AUTHOR'S COMMENTS:<\/strong> At the end of the part features in the Browser bar is the End of Part icon. Inventor will stop displaying the model when it finds this icon in the part features list. The icon can be dragged to any location desired.<\/div>\n

    Step 18<\/h2>\nMove the cursor onto the End of Part icon and hold down the left mouse button. When the End of Part has a red rectangle around it, drag it to the location shown in the figure. (Figure Step 18A, 18B, and 18C)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"253\"]\"\" Figure Step 18A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"256\"]\"\" Figure Step 18B[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"326\"]\"\" Figure Step 18C[\/caption]\n

    Step 19<\/h2>\nDrag the End of Part icon back to the bottom of the part feature list in the Browser bar. (Figure Step 19A and 19B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"275\"]\"\" Figure Step 19A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"248\"]\"\" Figure Step 19B[\/caption]\n

    Step 20<\/h2>\nUsing the SAVEAS command, save the file with the name: Inventor Workalong 20-1 Finished<\/span>. Close the part.\n

    Measuring the Model<\/h2>\nInventor has four commands available to measure distances, angles, loops lengths and areas. They also allow the user to set the units and decimal precision of how it displays the answers. Answers can be accumulated. Measurements can be made in either 3D (Model mode) or 2D (Sketch mode).\n
    \n

    Inventor Command: MEASURE DISTANCE, MEASURE ANGLE, MEASURE LOOP, MEASURE AREA<\/p>\n\n<\/header>\n

    \n\nThe MEASURE command is used to measure distances, angles, loops lengths and areas. It can be used in model mode or sketch mode. If it is used in Model mode, it measures in 3D and in Sketch mode, it measures in 2D.\n\nShortcut: None<\/strong>\n\n\"\"\n\n<\/div>\n<\/div>\n

    WORK ALONG: Measuring a Solid Model<\/h1>\n

    Step 1<\/h2>\nOpen part file: Inventor Workalong 20-1.ipt<\/span>. (Figure Step 1)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"273\"]\"\" Figure Step 1[\/caption]\n

    Step 2<\/h2>\nClick the MEASURE DISTANCE command. The Measure Distance dialogue box will display as shown in the figure. Move this dialogue box close to your model to make measuring easier. (Figure Step 2).\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"356\"]\"\" Figure Step 2[\/caption]\n

    Step 3<\/h2>\nNote that when you are in Measuring mode, the Graphic cursor appears as a ruler icon. The ruler icon indicates that you are measuring in document units. This will be covered in greater detail later in the module. (Figure Step 3)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"72\"]\"\" Figure Step 3[\/caption]\n

    Step 4<\/h2>\nMove the cursor to the bottom left corner of the model and click the left mouse button. Note how it displays a small snap circle indicating that you are snapping to an exact endpoint. (Figure Step 4)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"326\"]\"\" Figure Step 4[\/caption]\n

    Step 5<\/h2>\nWhen you snap to a location on the model, the XYZ coordinate location will display as shown in the figure. In this case, it is X0Y0Z0 of the model or the Center Point. (Figure Step 5)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"299\"]\"\" Figure Step 5[\/caption]\n

    Step 6<\/h2>\nTo clear the Measure Distance dialogue box and start a new measurement, click the small triangle inside the dialogue box. In the pull-down menu, select Restart. (Figure Step 6)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\" Figure Step 6[\/caption]\n

    Step 7<\/h2>\nMove the cursor to bottom right corner of the right side of the model. Click it to snap to the corner. The XYZ location will display in the dialogue box as shown in the figure. (Figure Step 7)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"291\"]\"\" Figure Step 7[\/caption]\n

    Step 8<\/h2>\nClear the dialogue box by clicking Restart. Measure the length of an edge. Move the cursor onto the left edge of the right side of the model as shown in the figure. (Figure Step 8)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 8[\/caption]\n

    Step 9<\/h2>\nWhen you click the mouse, the length of the edge will display in the dialogue box. In this case, it is 3 inches long. (Figure Step 9)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"293\"]\"\" Figure Step 9[\/caption]\n

    Step 10<\/h2>\nWhile the dialogue box is still displaying the length of the edge, click the opposite edge. Note how the dialogue box now displays both the length of the edge and the distance between the edges. A line showing the measured distance will display to show you what is being measured. (Figure Step 10)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"324\"]\"\" Figure Step 10[\/caption]\n

    Step 11<\/h2>\nTo measure a three dimensional distance, click the two corners shown in the figure. The 3D dimension between the corners will display as well as the XYZ location of the last corner and the delta XYZ distances. (Figure Step 11A and 11B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 11A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"234\"]\"\" Figure Step 11B[\/caption]\n

    Step 12<\/h2>\nMeasure the angle between the two edges by clicking the small triangle at the end of the dialogue box. In the pull-down menu, select Measure Angle. Select the two edges. The angle will display graphically and as an exact number in decimal degrees. (Figure Step 12A and 12B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"299\"]\"\" Figure Step 12A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"234\"]\"\" Figure Step 12B[\/caption]\n

    Step 13<\/h2>\nChange the command to Measure Loop. Click the face on the Front view. Note how the complete loop (the perimeter) around the front plane will highlight and the loop distance of 22 inches will display in the dialogue box. (Figure Step 13A and 13B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"328\"]\"\" Figure Step 13A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"232\"]\"\" Figure Step 13B[\/caption]\n

    Step 14<\/h2>\nMeasure the area of the right side face by changing the command to Measure Area. Click the face on the right side and the area to be measured will highlight. The area will display in the dialogue box. Since there is a hole in this plane, the area will be measured minus the hole. (Figure Step 14A and 14B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"314\"]\"\" Figure Step 14A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"209\"]\"\" Figure Step 14B[\/caption]\n

    Step 15<\/h2>\nSuppress the hole feature on the right side face so that you can measure the area of the face without subtracting the hole. Right-click the feature in the Browser bar. In the Right-click menu, select Suppress Feature. Note how Extrusion4 is now grayed out. (Figure Step 15)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 15[\/caption]\n

    Step 16<\/h2>\nUsing what you just learned, measure the area of the right-side minus the hole. After you measure it, unsuppress the hole feature. (Figure Step 16)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 16[\/caption]\n

    Step 17<\/h2>\nClick Tools and then click Document Settings. This will open the Document Setting dialogue box for the current part. Do not make any changes at this time. Click Close to close the dialogue box. (Figure Step 17A and 17B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"241\"]\"\" Figure Step 17A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 17B[\/caption]\n\n
    AUTHOR'S COMMENTS:<\/strong> The units and precision that Inventor has been displaying to your measurement commands have been preset in the document settings. Document settings are preset in the template file that you selected when you started the part. If required, you can make changes to the settings.<\/div>\n

    Step 18<\/h2>\nEnter the MEASURE command. Click the small triangle at the end. In the pull-down menu, select Precision and then 5 places. An example of an area measurement with a precision of 5 decimals points is shown in the figure.\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\" Figure Step 18[\/caption]\n

    Step 19<\/h2>\nChange the precision to display All Decimals. A sample of an answer to an area measurement is shown in the figure. (Figure Step 19)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\" Figure Step 19[\/caption]\n\n
    AUTHOR'S COMMENTS:<\/strong> When the precision is set to All Decimals, the Graphic cursor will change to the Micrometer icon as shown in Figure below.\"\"<\/div>\n

    Step 20<\/h2>\nChange the precision back to three decimal places. (Figure Step 20)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\" Figure Step 20[\/caption]\n

    Step 21<\/h2>\nChange the colour to: Aluminum Cast<\/span>. (Figure Step 21)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"291\"]\"\" Figure Step 21[\/caption]\n

    Step 22<\/h2>\nSave and close the part.\n

    Geometry Lesson: Physical Properties<\/h1>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Mass:<\/th>\nthe quantity of the matter contained in the solid model. This is determined by multiplying the volume of the solid times the density of the material it is made from. Mass is not dependent on gravity which makes it different but proportional to the weight. Mass is used when considering a measure of a solid\u2019s resistance to inertia.<\/td>\n<\/tr>\n
    Volume:<\/th>\nThe amount of space occupied by the solid model.<\/td>\n<\/tr>\n
    Density:<\/th>\nThe weight of material usually expressed per cubic inch or cubic millimeter. i.e. 21.55^3in or 42.87^3mm<\/td>\n<\/tr>\n
    Center of Gravity:<\/th>\nGeometrical centre of the solid model. It is also called the centroid<\/span>. If the density of the solid is uniform, the centre of gravity or centroid is located at the centre of the mass.<\/td>\n<\/tr>\n
    Mass =<\/th>\nVolume X Density Expressed as lbmass, grams or kg<\/td>\n<\/tr>\n
    Area =<\/th>\nLength X Width of a 2D plane. Expressed as sq in or sq mm. ie. 10.5^2in or 23.5^2mm<\/td>\n<\/tr>\n
    Volume -<\/th>\ncubic inches or millimeters. Expressed as cu in or cu mm ie. 120.5^3in or 55.3^3mm<\/td>\n<\/tr>\n
    lbmass -<\/th>\npounds<\/td>\n<\/tr>\n
    kg -<\/th>\nkilograms 1 kg = 1000 grams 1 kg = 2.2 pounds<\/td>\n<\/tr>\n
    in -<\/th>\ninches<\/td>\n<\/tr>\n
    mm -<\/th>\nmillimeters 1 in = 25.4 mm<\/td>\n<\/tr>\n
    Inventor will display answers in scientific notation to control the number of decimals displayed:<\/th>\nFor Example 1,250,000 = 1.25E+006 (move the decimal 6 places positively)\n0.0001 = 1.0E-004 (move the decimal 4 places negatively)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Face Coloring<\/h2>\nSometimes it is helpful to be able to change the colour of a face. This is especially helpful when working with complex parts or to display different textures on a model. For example, this can happen during manufacturing when a part is cast and has machined surfaces. By applying the cast material to the part and then changing the faces of the machined areas to a polished texture\/color, the model will appear more realistic.\n\nA face colour overrides the part colour and, if applicable, the feature colour for selected faces. In this module, only faces coloring will be taught. The general rules when changing the colour of faces are:\n
      \n \t
    1. A face colour overrides the part feature colour which in turn overrides the part colour.<\/li>\n \t
    2. If the part has been assigned a transparent colour, the face colour you apply will change the colour but it will be transparent.<\/li>\n \t
    3. If a thread texture is applied to the feature, a change to the face colour affects the base colour used in the thread texture.<\/li>\n \t
    4. If the face colour has been changed and the feature is colored as a pattern, the patterned features will not display the face colour.<\/li>\n<\/ol>\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure 20-3
      Edges and Faces[\/caption]\n

      Physical Properties<\/h2>\nThe physical properties<\/span><\/em> of a solid model include the mass, volume, centre of gravity, and inertial properties. Using the physical properties helps you to evaluate how the designed model correlates to its physical counterpart. For example, the weight of a solid model made from different materials could easily be found.\n

      Assigning the Material to the Model<\/h2>\nUp to this point in the book, only colour or texture has been assigned to the solid model. In this module, assigning the actual material that the part is made from will be taught.\n

      WORK ALONG: Coloring Faces and Working with Physical Properties<\/h1>\n

      Step 1<\/h2>\nOpen part file: Inventor Workalong 20-1.ipt<\/span>. (Figure Step 1)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"291\"]\"\" Figure Step 1[\/caption]\n

      Step 2<\/h2>\nClick the right side face to select it and right click the mouse. In the Right-click menu, select Properties. In the Face Properties dialogue box, select: Blue - Wall Paint - Glossy<\/span>. (Figure Step 2A, 2B, and 2C)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"354\"]\"\" Figure Step 2A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"290\"]\"\" Figure Step 2B[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"301\"]\"\" Figure Step 2C[\/caption]\n

      Step 3<\/h2>\nUsing what you just learned, change three additional faces as shown in the figure to Green, Orange and Red. (Figure Step 3)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 3[\/caption]\n

      Step 4<\/h2>\nClick the View tab. Click the CENTER OF GRAVITY command. Note how the Center of Gravity icon will display located at the centre of gravity or centroid of the model. It also displays the positive X, Y and Z axis. (Figure Step 4A and 4B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 4A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"289\"]\"\" Figure Step 4B[\/caption]\n

      Step 5<\/h2>\nRotate the model so that you can see the location of Center of Gravity icon from a better viewpoint . (Figure Step 5)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"416\"]\"\" Figure Step 5[\/caption]\n

      Step 6<\/h2>\nDisable the display of the Center of Gravity icon.\n

      Step 7<\/h2>\nRight-click the part name in the Browser bar. In the Right-click menu, select iProperties. This will open the Properties dialogue box for the current part. (Figure step 7A and 7B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"275\"]\"\" Figure Step 7A[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\"<\/a> Figure Step 7B [Click to see image full size][\/caption]\n
      AUTHOR'S COMMENTS:<\/strong> When a Default material is assigned it means that no actual material has been assigned to the part. Even though the colour of the solid is set to Aluminum (Cast), that is only the appearance of the model. The material that the solid model is made from must also be assigned.<\/div>\n

      Step 8<\/h2>\nEnable the Physical tab. Note how the material is shown as Default. Pull down the Material list and select: Aluminum 6061<\/span>. (Figure Step 8)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\" Figure Step 8[\/caption]\n

      Step 9<\/h2>\nChange the Requested Accuracy to Very High. The Density box displays the density of the material: Aluminum 6061<\/span>. (Figure Step 9)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\" Figure Step 9[\/caption]\n

      Step 10<\/h2>\nUsing what you learned earlier in the workalong, open the Document Settings dialogue box and in the Units tab, change the Mass to gram. (Figure Step 10)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"400\"]\"\" Figure Step 10[\/caption]\n

      Step 11<\/h2>\nNote how the mass (weight) is now displayed in grams. (Figure Step 11)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"470\"]\"\" Figure Step 11[\/caption]\n

      Step 12<\/h2>\nChange the material to: Cast Steel<\/span>. Note how the density and the mass change since steel is much denser then aluminum.\n

      Step 13<\/h2>\nChange the material back to: Aluminum-6061<\/span>. Close the Properties dialogue box.\n

      Step 14<\/h2>\nSave and close the part.\n

      Key Principles<\/h1>\n
      \n

      Key Principles in Module 20<\/p>\n\n<\/header>\n

        \n \t
      1. The Browser bar is used extensively as a tool to assist you when modifying solid models.<\/li>\n \t
      2. Work features are the basic sketching planes (XY, XZ, YZ), the axes (X, Y, Z) and the Center Point. Part features are the 3D features added to the solid model in model construction.<\/li>\n \t
      3. Edges are the lines, circles or arcs located between the planes that form the solid model. Faces are the planes between the edges of the solid.<\/li>\n \t
      4. Inventor has four commands available to measure distances, angles, loops lengths, and areas. They also allow you to set the units and decimal precision of how it displays the answers. Answers can be accumulated. Measurements can be made in either 3D (Model mode) or 2D (Sketch mode) mode.<\/li>\n<\/ol>\n<\/div>\n

        Lab Exercise 20-1<\/h1>\nTime allowed: 60 minutes.\n\n\n\n\n
        Part Name<\/strong>: Inventor Lab 20-1<\/td>\nProject<\/strong>: Inventor Course<\/td>\nUnits<\/strong>: Millimeters<\/td>\n<\/tr>\n
        Template<\/strong>: Metric - Modules Part (mm).ipt<\/td>\nColor<\/strong>: Aluminum (Cast)<\/td>\nMaterial<\/strong>: Aluminum - 6061<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Step 1<\/h2>\nOpen the part: Inventor Lab 19-3.ipt<\/span> that you created in Module 19. (Figure Step 1)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 1
        Modified Solid Model[\/caption]\n

        Step 2<\/h2>\nSave the file as: Inventor Lab 20-1<\/span>.\n

        Step 3<\/h2>\nChange the model colour to: Aluminum (Cast)<\/span>.\n

        Step 4<\/h2>\nExpand All the Children in the Browser bar.\n

        Step 5<\/h2>\nEdit the Base sketch and change the dimensions of the overall length from 180 to 200 and the overall width from 140 to 175 in the figure. (Figure Step 5)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"500\"]\"\"<\/a> Figure Step 5
        Editing the Base Sketch [Click to see image full size][\/caption]\n

        Step 6<\/h2>\nEdit the feature Extrusion1 and change the thickness of the base sketch from 15mm to 20 mm. Return to model mode.\n

        Step 7<\/h2>\nUsing the next five figures below, change the colors of the machined faces shown to: Aluminum (Polished)<\/span>. (Figure Step 7A, 7B, 7C, 7D, and 7E)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 7A
        Solid Model - Colored Faces[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 7B
        Solid Model - Colored Faces[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 7C
        Solid Model - Colored Faces[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 7D
        Solid Model - Colored Faces[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 7E
        Solid Model - Colored Faces[\/caption]\n

        Lab Exercise 20-2<\/h1>\nTime allowed: 60 minutes.\n\n\n\n\n
        Part Name<\/strong>: Inventor Lab 20-2<\/td>\nProject<\/strong>: Inventor Course<\/td>\nUnits<\/strong>: Inches<\/td>\n<\/tr>\n
        Template<\/strong>: N\/A<\/td>\nColor<\/strong>: Blue Gray (Light)<\/td>\nMaterial<\/strong>: Cast Iron<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Step 1<\/h2>\nOpen part: Inventor Lab 18-2.ipt<\/span> that you created in Module 18. (Figure Step 1A and 1B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 1A
        Solid Model - Home View[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 1B
        Solid Model - Without the Small Fillets[\/caption]\n

        Step 2<\/h2>\nSave the file as: Inventor Lab 20-2<\/span>.\n

        Step 3<\/h2>\nChange the colour to: Blue Gray (Light)<\/span>\n

        Step 4<\/h2>\nMove the End of Part Icon up above the small fillets as shown below. (Figure Step 4)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"278\"]\"\" Figure Step 4[\/caption]\n

        Step 5<\/h2>\nFind the following with a precision of 5 decimal points. (Figure Step 5)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 5[\/caption]\n\nA The XYZ coordinates of corner A.\n____________________________\n\nB The distance from corner B to corner C.\n____________________________\n\nC The distance from corner B to corner D.\n____________________________\n\nD The area of the shaded area the figure. Do NOT include the area of the cylinder. (Figure Step 5D)\n\n____________________________\n\nE The perimeter of the shaded plane. (Figure Step 5E)\n\n____________________________\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 5D and 5E)[\/caption]\n\nF The area of the shaded area of the figure WITHOUT the eight small holes. (Figure Step 5F)\n____________________________\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 5F[\/caption]\n

        Step 6<\/h2>\nMove the End of Part icon back to bottom.\n

        Step 7<\/h2>\nUsing the two figures, change the colors of the faces shown to: Blue Pastel<\/span>. (Figure Step 7A and 7B)\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 7A
        Solid Model - Colored Faces[\/caption]\n\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 7B
        Solid Model - Colored Faces[\/caption]\n

        Step 8<\/h2>\nSet the material to: Cast Iron and find the following:\n\nA The mass in pounds.\n____________________________\n\nB The mass in grams.\n____________________________\n

        Step 9<\/h2>\nSave and close the part.","rendered":"
        \n
        \n

        Learning Outcomes<\/p>\n<\/header>\n

        \n

        When you have completed this module, you will be able to:<\/p>\n

          \n
        1. Describe how to edit the dimensions and part features of an existing solid model using the Browser bar to aid you.<\/li>\n
        2. Describe how to hide and\/or suppress features in the solid model.<\/li>\n
        3. Describe and apply the MEASURE command to measure lengths, loops, angles, or areas of a solid model in either two dimensions or three dimensions.<\/li>\n
        4. Describe how to set the material and change the colour of faces of the solid model.<\/li>\n
        5. Describe how to obtain the physical properties of a solid model.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

          Modifying Solid Models<\/h1>\n

          The ability to modify solid models is as important to the drafter\/designer as being able to construct models. Since most parts are modified after the initial design or revised and used in another project, it is very important that you can modify solid models rather then redraw them. The true power of Inventor is its ability to modify a solid and have it conform to the geometrical and dimensional constraints applied to it when it was constructed without having to redraw it. In this module, the basics of modifying solid models is taught. The Inventor Advanced book will cover the more advanced methods of modifying solid models.<\/p>\n

          Working with the Browser Bar<\/h2>\n

          The Browser bar is used extensively as a tool to assist you when modifying solid models. It displays the work features and the part features for the current part.<\/p>\n

          Features<\/h2>\n

          Work features<\/em> <\/span>are the basic sketching planes (XY, XZ, YZ), the axes (X, Y, Z) and the Center Point as shown in Figure 20-1. Part features<\/span><\/em> are the 3D features added to the solid model in model construction. The part features for the active part are shown in Figure 20-2.<\/p>\n

          \"\"
          Figure 20-1
          Work Features<\/figcaption><\/figure>\n
          \"\"
          Figure 20-2
          Part Features<\/figcaption><\/figure>\n

          Edges and Faces<\/h2>\n

          Edges<\/span> <\/em>are the lines, circles, or arcs located between the planes that form the solid model. Faces are the planes between the edges of the solid. A face can also be circular or cylindrical in shade, for example the hole in the model. Figure 20-3 shows each visible face of a solid model in a different colour.<\/p>\n

          \"\"
          Figure 20-3
          Edges and Faces<\/figcaption><\/figure>\n

          WORK ALONG: Modifying a Solid Model<\/h1>\n

          Step 1<\/h2>\n

          Open the part file: Inventor Workalong 20-1.ipt<\/span>. This is one of the parts that you received when you download your book. It should be in the folder: Lab Exercise<\/span>. (Figure Step 1A and 1B)<\/p>\n

          \"\"
          Figure Step 1A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 1B<\/figcaption><\/figure>\n

          Step 2<\/h2>\n

          The Filter icon located at the top of the Browser bar allows you to enable or disable the visibility of the features in the Browser bar. Click the Filter icon. The filter list will display. (Figure Step 2A and 2B)<\/p>\n

          \"\"
          Figure Step 2A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 2B<\/figcaption><\/figure>\n

          Step 3<\/h2>\n

          Click Hide Work Features to enable it. The work features are now hidden for the current part. (Figure Step 3A and 3B)<\/p>\n

          \"\"
          Figure Step 3A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 3B<\/figcaption><\/figure>\n

          Step 4<\/h2>\n

          Since you want the work features to display most of the time, click the Filter icon again and disable the Hide Work Features. (Figure Step 4)<\/p>\n

          \"\"
          Figure Step 4<\/figcaption><\/figure>\n

          Step 5<\/h2>\n

          The Part icon is the first icon inside the Browser bar window. It displays the name of the active part. (Figure Step 5)<\/p>\n

          \"\"
          Figure Step 5<\/figcaption><\/figure>\n

          Step 6<\/h2>\n

          Right-click the part name. In the Right-click menu, click Expand All Children. Note how all the folders and part features will expand to display every feature in the current part. Right click the menu again and this time, click Collapse All Children. (Figure Step 6A, 6B, and 6C)<\/p>\n

          \"\"
          Figure Step 6A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 6B<\/figcaption><\/figure>\n
          \"\"
          Figure Step 6C<\/figcaption><\/figure>\n

          Step 7<\/h2>\n

          Right-click the part feature Extrusion1. In the Right-click menu, click Show Dimensions. Note how the 2D sketch dimensions and the extrusion dimension will display on the model. (Figure Step 7)<\/p>\n

          \"\"<\/a>
          Figure Step 7 [Click to see image full size]<\/figcaption><\/figure>\n

          Step 8<\/h2>\n

          Right-click Extrusion1 again. In the Right-click menu, click Edit Sketch. The Graphic window will change to Sketch mode and display the sketch. (Figure Step 8)<\/p>\n

          \"\"
          Figure Step 8<\/figcaption><\/figure>\n

          Step 9<\/h2>\n

          Double click any dimension in the sketch and the Edit Dimension dialogue box will open as shown in the figure. You could now change the dimension, if required, which in turn will change the size of the model. Close the dialogue box without making any changes and return to Model mode. (Figure Step 9)<\/p>\n

          \"\"
          Figure Step 9<\/figcaption><\/figure>\n

          Step 10<\/h2>\n

          Right-click Extrusion1. In the right-click menu, click Edit Feature. Since this feature is an extrusion, the Extrude dialogue box will open. If required, the extrude feature could be edited. Click the Cancel button to close it. (Figure Step 10A and 10B)<\/p>\n

          \"\"
          Figure Step 10A<\/figcaption><\/figure>\n
          \"\"<\/a>
          Figure Step 10B [Click to see image full size]<\/figcaption><\/figure>\n

          Step 11<\/h2>\n

          Right-click Extrusion3 as shown in the figure. In the right-click menu, click Find in Window. Note how the extrude on the left side will fully display in the window. This is a handy feature to use when your part is complicated or if you are using a part you are not familiar with. (Figure Step 11)<\/p>\n

          \"\"
          Figure Step 11<\/figcaption><\/figure>\n

          Step 12<\/h2>\n

          Using what you learned in Steps 8 to 11, edit the sketch in Extrusion1 to match the dimensions shown in the figure. When you are done, click Finish Sketch to return to Model mode and the model will resize to reflect the changes you made to the dimensions. (Figure Step 12)<\/p>\n

          \"\"
          Figure Step 12<\/figcaption><\/figure>\n

          Step 13<\/h2>\n

          Edit Extrusion1 to change the extrusion depth from 3 inches to 4 inches. Click OK. (Figure Step 13)<\/p>\n

          \"\"<\/a>
          Figure Step 13 [Click to see image full size]<\/figcaption><\/figure>\n

          Step 14<\/h2>\n

          Edit the dimensions in the sketch for the part feature Extrusion4 to the dimensions shown in the figure. Return to Model mode. (Figure Step 14A and 14B)<\/p>\n

          \"\"
          Figure Step 14A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 14B<\/figcaption><\/figure>\n

          Step 15<\/h2>\n

          Since Sketch1 is an unconsumed sketch, it can be deleted. Select it and right click it. In the Right-click menu, select Delete. (Figure Step 15)<\/p>\n

          \"\"
          Figure Step 15<\/figcaption><\/figure>\n
          AUTHOR’S COMMENTS:<\/strong> The names of the part features in the Browser bar can be renamed to names that make more sense to the user. To change a name, click the existing name twice in the Browser bar and it will change to edit mode.<\/div>\n

          Step 16<\/h2>\n

          Expand the children. Change the name of Sketch2 to Base Sketch – Front View. (Figure Step 16A and 16B)<\/p>\n

          \"\"
          Figure Step 16A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 16B<\/figcaption><\/figure>\n

          Step 17<\/h2>\n

          Change the names of all the part features and their children to match the names in the figure. Change the name of the part to: Inventor Workalong 20-1 Finished.ipt<\/span> as shown in the figure. (Figure Step 17)<\/p>\n

          \"\"
          Figure Step 17<\/figcaption><\/figure>\n
          AUTHOR’S COMMENTS:<\/strong> When you edit the name of the file in the Browser bar, it will NOT change the name of the current file. When you save the file, it will be saved with it original name.<\/div>\n
          AUTHOR’S COMMENTS:<\/strong> At the end of the part features in the Browser bar is the End of Part icon. Inventor will stop displaying the model when it finds this icon in the part features list. The icon can be dragged to any location desired.<\/div>\n

          Step 18<\/h2>\n

          Move the cursor onto the End of Part icon and hold down the left mouse button. When the End of Part has a red rectangle around it, drag it to the location shown in the figure. (Figure Step 18A, 18B, and 18C)<\/p>\n

          \"\"
          Figure Step 18A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 18B<\/figcaption><\/figure>\n
          \"\"
          Figure Step 18C<\/figcaption><\/figure>\n

          Step 19<\/h2>\n

          Drag the End of Part icon back to the bottom of the part feature list in the Browser bar. (Figure Step 19A and 19B)<\/p>\n

          \"\"
          Figure Step 19A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 19B<\/figcaption><\/figure>\n

          Step 20<\/h2>\n

          Using the SAVEAS command, save the file with the name: Inventor Workalong 20-1 Finished<\/span>. Close the part.<\/p>\n

          Measuring the Model<\/h2>\n

          Inventor has four commands available to measure distances, angles, loops lengths and areas. They also allow the user to set the units and decimal precision of how it displays the answers. Answers can be accumulated. Measurements can be made in either 3D (Model mode) or 2D (Sketch mode).<\/p>\n

          \n
          \n

          Inventor Command: MEASURE DISTANCE, MEASURE ANGLE, MEASURE LOOP, MEASURE AREA<\/p>\n<\/header>\n

          \n

          The MEASURE command is used to measure distances, angles, loops lengths and areas. It can be used in model mode or sketch mode. If it is used in Model mode, it measures in 3D and in Sketch mode, it measures in 2D.<\/p>\n

          Shortcut: None<\/strong><\/p>\n

          \"\"<\/p>\n<\/div>\n<\/div>\n

          WORK ALONG: Measuring a Solid Model<\/h1>\n

          Step 1<\/h2>\n

          Open part file: Inventor Workalong 20-1.ipt<\/span>. (Figure Step 1)<\/p>\n

          \"\"
          Figure Step 1<\/figcaption><\/figure>\n

          Step 2<\/h2>\n

          Click the MEASURE DISTANCE command. The Measure Distance dialogue box will display as shown in the figure. Move this dialogue box close to your model to make measuring easier. (Figure Step 2).<\/p>\n

          \"\"
          Figure Step 2<\/figcaption><\/figure>\n

          Step 3<\/h2>\n

          Note that when you are in Measuring mode, the Graphic cursor appears as a ruler icon. The ruler icon indicates that you are measuring in document units. This will be covered in greater detail later in the module. (Figure Step 3)<\/p>\n

          \"\"
          Figure Step 3<\/figcaption><\/figure>\n

          Step 4<\/h2>\n

          Move the cursor to the bottom left corner of the model and click the left mouse button. Note how it displays a small snap circle indicating that you are snapping to an exact endpoint. (Figure Step 4)<\/p>\n

          \"\"
          Figure Step 4<\/figcaption><\/figure>\n

          Step 5<\/h2>\n

          When you snap to a location on the model, the XYZ coordinate location will display as shown in the figure. In this case, it is X0Y0Z0 of the model or the Center Point. (Figure Step 5)<\/p>\n

          \"\"
          Figure Step 5<\/figcaption><\/figure>\n

          Step 6<\/h2>\n

          To clear the Measure Distance dialogue box and start a new measurement, click the small triangle inside the dialogue box. In the pull-down menu, select Restart. (Figure Step 6)<\/p>\n

          \"\"
          Figure Step 6<\/figcaption><\/figure>\n

          Step 7<\/h2>\n

          Move the cursor to bottom right corner of the right side of the model. Click it to snap to the corner. The XYZ location will display in the dialogue box as shown in the figure. (Figure Step 7)<\/p>\n

          \"\"
          Figure Step 7<\/figcaption><\/figure>\n

          Step 8<\/h2>\n

          Clear the dialogue box by clicking Restart. Measure the length of an edge. Move the cursor onto the left edge of the right side of the model as shown in the figure. (Figure Step 8)<\/p>\n

          \"\"
          Figure Step 8<\/figcaption><\/figure>\n

          Step 9<\/h2>\n

          When you click the mouse, the length of the edge will display in the dialogue box. In this case, it is 3 inches long. (Figure Step 9)<\/p>\n

          \"\"
          Figure Step 9<\/figcaption><\/figure>\n

          Step 10<\/h2>\n

          While the dialogue box is still displaying the length of the edge, click the opposite edge. Note how the dialogue box now displays both the length of the edge and the distance between the edges. A line showing the measured distance will display to show you what is being measured. (Figure Step 10)<\/p>\n

          \"\"
          Figure Step 10<\/figcaption><\/figure>\n

          Step 11<\/h2>\n

          To measure a three dimensional distance, click the two corners shown in the figure. The 3D dimension between the corners will display as well as the XYZ location of the last corner and the delta XYZ distances. (Figure Step 11A and 11B)<\/p>\n

          \"\"
          Figure Step 11A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 11B<\/figcaption><\/figure>\n

          Step 12<\/h2>\n

          Measure the angle between the two edges by clicking the small triangle at the end of the dialogue box. In the pull-down menu, select Measure Angle. Select the two edges. The angle will display graphically and as an exact number in decimal degrees. (Figure Step 12A and 12B)<\/p>\n

          \"\"
          Figure Step 12A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 12B<\/figcaption><\/figure>\n

          Step 13<\/h2>\n

          Change the command to Measure Loop. Click the face on the Front view. Note how the complete loop (the perimeter) around the front plane will highlight and the loop distance of 22 inches will display in the dialogue box. (Figure Step 13A and 13B)<\/p>\n

          \"\"
          Figure Step 13A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 13B<\/figcaption><\/figure>\n

          Step 14<\/h2>\n

          Measure the area of the right side face by changing the command to Measure Area. Click the face on the right side and the area to be measured will highlight. The area will display in the dialogue box. Since there is a hole in this plane, the area will be measured minus the hole. (Figure Step 14A and 14B)<\/p>\n

          \"\"
          Figure Step 14A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 14B<\/figcaption><\/figure>\n

          Step 15<\/h2>\n

          Suppress the hole feature on the right side face so that you can measure the area of the face without subtracting the hole. Right-click the feature in the Browser bar. In the Right-click menu, select Suppress Feature. Note how Extrusion4 is now grayed out. (Figure Step 15)<\/p>\n

          \"\"
          Figure Step 15<\/figcaption><\/figure>\n

          Step 16<\/h2>\n

          Using what you just learned, measure the area of the right-side minus the hole. After you measure it, unsuppress the hole feature. (Figure Step 16)<\/p>\n

          \"\"
          Figure Step 16<\/figcaption><\/figure>\n

          Step 17<\/h2>\n

          Click Tools and then click Document Settings. This will open the Document Setting dialogue box for the current part. Do not make any changes at this time. Click Close to close the dialogue box. (Figure Step 17A and 17B)<\/p>\n

          \"\"
          Figure Step 17A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 17B<\/figcaption><\/figure>\n
          AUTHOR’S COMMENTS:<\/strong> The units and precision that Inventor has been displaying to your measurement commands have been preset in the document settings. Document settings are preset in the template file that you selected when you started the part. If required, you can make changes to the settings.<\/div>\n

          Step 18<\/h2>\n

          Enter the MEASURE command. Click the small triangle at the end. In the pull-down menu, select Precision and then 5 places. An example of an area measurement with a precision of 5 decimals points is shown in the figure.<\/p>\n

          \"\"
          Figure Step 18<\/figcaption><\/figure>\n

          Step 19<\/h2>\n

          Change the precision to display All Decimals. A sample of an answer to an area measurement is shown in the figure. (Figure Step 19)<\/p>\n

          \"\"
          Figure Step 19<\/figcaption><\/figure>\n
          AUTHOR’S COMMENTS:<\/strong> When the precision is set to All Decimals, the Graphic cursor will change to the Micrometer icon as shown in Figure below.\"\"<\/div>\n

          Step 20<\/h2>\n

          Change the precision back to three decimal places. (Figure Step 20)<\/p>\n

          \"\"
          Figure Step 20<\/figcaption><\/figure>\n

          Step 21<\/h2>\n

          Change the colour to: Aluminum Cast<\/span>. (Figure Step 21)<\/p>\n

          \"\"
          Figure Step 21<\/figcaption><\/figure>\n

          Step 22<\/h2>\n

          Save and close the part.<\/p>\n

          Geometry Lesson: Physical Properties<\/h1>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          Mass:<\/th>\nthe quantity of the matter contained in the solid model. This is determined by multiplying the volume of the solid times the density of the material it is made from. Mass is not dependent on gravity which makes it different but proportional to the weight. Mass is used when considering a measure of a solid\u2019s resistance to inertia.<\/td>\n<\/tr>\n
          Volume:<\/th>\nThe amount of space occupied by the solid model.<\/td>\n<\/tr>\n
          Density:<\/th>\nThe weight of material usually expressed per cubic inch or cubic millimeter. i.e. 21.55^3in or 42.87^3mm<\/td>\n<\/tr>\n
          Center of Gravity:<\/th>\nGeometrical centre of the solid model. It is also called the centroid<\/span>. If the density of the solid is uniform, the centre of gravity or centroid is located at the centre of the mass.<\/td>\n<\/tr>\n
          Mass =<\/th>\nVolume X Density Expressed as lbmass, grams or kg<\/td>\n<\/tr>\n
          Area =<\/th>\nLength X Width of a 2D plane. Expressed as sq in or sq mm. ie. 10.5^2in or 23.5^2mm<\/td>\n<\/tr>\n
          Volume –<\/th>\ncubic inches or millimeters. Expressed as cu in or cu mm ie. 120.5^3in or 55.3^3mm<\/td>\n<\/tr>\n
          lbmass –<\/th>\npounds<\/td>\n<\/tr>\n
          kg –<\/th>\nkilograms 1 kg = 1000 grams 1 kg = 2.2 pounds<\/td>\n<\/tr>\n
          in –<\/th>\ninches<\/td>\n<\/tr>\n
          mm –<\/th>\nmillimeters 1 in = 25.4 mm<\/td>\n<\/tr>\n
          Inventor will display answers in scientific notation to control the number of decimals displayed:<\/th>\nFor Example 1,250,000 = 1.25E+006 (move the decimal 6 places positively)
          \n0.0001 = 1.0E-004 (move the decimal 4 places negatively)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Face Coloring<\/h2>\n

          Sometimes it is helpful to be able to change the colour of a face. This is especially helpful when working with complex parts or to display different textures on a model. For example, this can happen during manufacturing when a part is cast and has machined surfaces. By applying the cast material to the part and then changing the faces of the machined areas to a polished texture\/color, the model will appear more realistic.<\/p>\n

          A face colour overrides the part colour and, if applicable, the feature colour for selected faces. In this module, only faces coloring will be taught. The general rules when changing the colour of faces are:<\/p>\n

            \n
          1. A face colour overrides the part feature colour which in turn overrides the part colour.<\/li>\n
          2. If the part has been assigned a transparent colour, the face colour you apply will change the colour but it will be transparent.<\/li>\n
          3. If a thread texture is applied to the feature, a change to the face colour affects the base colour used in the thread texture.<\/li>\n
          4. If the face colour has been changed and the feature is colored as a pattern, the patterned features will not display the face colour.<\/li>\n<\/ol>\n
            \"\"
            Figure 20-3
            Edges and Faces<\/figcaption><\/figure>\n

            Physical Properties<\/h2>\n

            The physical properties<\/span><\/em> of a solid model include the mass, volume, centre of gravity, and inertial properties. Using the physical properties helps you to evaluate how the designed model correlates to its physical counterpart. For example, the weight of a solid model made from different materials could easily be found.<\/p>\n

            Assigning the Material to the Model<\/h2>\n

            Up to this point in the book, only colour or texture has been assigned to the solid model. In this module, assigning the actual material that the part is made from will be taught.<\/p>\n

            WORK ALONG: Coloring Faces and Working with Physical Properties<\/h1>\n

            Step 1<\/h2>\n

            Open part file: Inventor Workalong 20-1.ipt<\/span>. (Figure Step 1)<\/p>\n

            \"\"
            Figure Step 1<\/figcaption><\/figure>\n

            Step 2<\/h2>\n

            Click the right side face to select it and right click the mouse. In the Right-click menu, select Properties. In the Face Properties dialogue box, select: Blue – Wall Paint – Glossy<\/span>. (Figure Step 2A, 2B, and 2C)<\/p>\n

            \"\"
            Figure Step 2A<\/figcaption><\/figure>\n
            \"\"
            Figure Step 2B<\/figcaption><\/figure>\n
            \"\"
            Figure Step 2C<\/figcaption><\/figure>\n

            Step 3<\/h2>\n

            Using what you just learned, change three additional faces as shown in the figure to Green, Orange and Red. (Figure Step 3)<\/p>\n

            \"\"
            Figure Step 3<\/figcaption><\/figure>\n

            Step 4<\/h2>\n

            Click the View tab. Click the CENTER OF GRAVITY command. Note how the Center of Gravity icon will display located at the centre of gravity or centroid of the model. It also displays the positive X, Y and Z axis. (Figure Step 4A and 4B)<\/p>\n

            \"\"
            Figure Step 4A<\/figcaption><\/figure>\n
            \"\"
            Figure Step 4B<\/figcaption><\/figure>\n

            Step 5<\/h2>\n

            Rotate the model so that you can see the location of Center of Gravity icon from a better viewpoint . (Figure Step 5)<\/p>\n

            \"\"
            Figure Step 5<\/figcaption><\/figure>\n

            Step 6<\/h2>\n

            Disable the display of the Center of Gravity icon.<\/p>\n

            Step 7<\/h2>\n

            Right-click the part name in the Browser bar. In the Right-click menu, select iProperties. This will open the Properties dialogue box for the current part. (Figure step 7A and 7B)<\/p>\n

            \"\"
            Figure Step 7A<\/figcaption><\/figure>\n
            \"\"<\/a>
            Figure Step 7B [Click to see image full size]<\/figcaption><\/figure>\n
            AUTHOR’S COMMENTS:<\/strong> When a Default material is assigned it means that no actual material has been assigned to the part. Even though the colour of the solid is set to Aluminum (Cast), that is only the appearance of the model. The material that the solid model is made from must also be assigned.<\/div>\n

            Step 8<\/h2>\n

            Enable the Physical tab. Note how the material is shown as Default. Pull down the Material list and select: Aluminum 6061<\/span>. (Figure Step 8)<\/p>\n

            \"\"
            Figure Step 8<\/figcaption><\/figure>\n

            Step 9<\/h2>\n

            Change the Requested Accuracy to Very High. The Density box displays the density of the material: Aluminum 6061<\/span>. (Figure Step 9)<\/p>\n

            \"\"
            Figure Step 9<\/figcaption><\/figure>\n

            Step 10<\/h2>\n

            Using what you learned earlier in the workalong, open the Document Settings dialogue box and in the Units tab, change the Mass to gram. (Figure Step 10)<\/p>\n

            \"\"
            Figure Step 10<\/figcaption><\/figure>\n

            Step 11<\/h2>\n

            Note how the mass (weight) is now displayed in grams. (Figure Step 11)<\/p>\n

            \"\"
            Figure Step 11<\/figcaption><\/figure>\n

            Step 12<\/h2>\n

            Change the material to: Cast Steel<\/span>. Note how the density and the mass change since steel is much denser then aluminum.<\/p>\n

            Step 13<\/h2>\n

            Change the material back to: Aluminum-6061<\/span>. Close the Properties dialogue box.<\/p>\n

            Step 14<\/h2>\n

            Save and close the part.<\/p>\n

            Key Principles<\/h1>\n
            \n
            \n

            Key Principles in Module 20<\/p>\n<\/header>\n

              \n
            1. The Browser bar is used extensively as a tool to assist you when modifying solid models.<\/li>\n
            2. Work features are the basic sketching planes (XY, XZ, YZ), the axes (X, Y, Z) and the Center Point. Part features are the 3D features added to the solid model in model construction.<\/li>\n
            3. Edges are the lines, circles or arcs located between the planes that form the solid model. Faces are the planes between the edges of the solid.<\/li>\n
            4. Inventor has four commands available to measure distances, angles, loops lengths, and areas. They also allow you to set the units and decimal precision of how it displays the answers. Answers can be accumulated. Measurements can be made in either 3D (Model mode) or 2D (Sketch mode) mode.<\/li>\n<\/ol>\n<\/div>\n

              Lab Exercise 20-1<\/h1>\n

              Time allowed: 60 minutes.<\/p>\n\n\n\n\n
              Part Name<\/strong>: Inventor Lab 20-1<\/td>\nProject<\/strong>: Inventor Course<\/td>\nUnits<\/strong>: Millimeters<\/td>\n<\/tr>\n
              Template<\/strong>: Metric – Modules Part (mm).ipt<\/td>\nColor<\/strong>: Aluminum (Cast)<\/td>\nMaterial<\/strong>: Aluminum – 6061<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              Step 1<\/h2>\n

              Open the part: Inventor Lab 19-3.ipt<\/span> that you created in Module 19. (Figure Step 1)<\/p>\n

              \"\"
              Figure Step 1
              Modified Solid Model<\/figcaption><\/figure>\n

              Step 2<\/h2>\n

              Save the file as: Inventor Lab 20-1<\/span>.<\/p>\n

              Step 3<\/h2>\n

              Change the model colour to: Aluminum (Cast)<\/span>.<\/p>\n

              Step 4<\/h2>\n

              Expand All the Children in the Browser bar.<\/p>\n

              Step 5<\/h2>\n

              Edit the Base sketch and change the dimensions of the overall length from 180 to 200 and the overall width from 140 to 175 in the figure. (Figure Step 5)<\/p>\n

              \"\"<\/a>
              Figure Step 5
              Editing the Base Sketch [Click to see image full size]<\/figcaption><\/figure>\n

              Step 6<\/h2>\n

              Edit the feature Extrusion1 and change the thickness of the base sketch from 15mm to 20 mm. Return to model mode.<\/p>\n

              Step 7<\/h2>\n

              Using the next five figures below, change the colors of the machined faces shown to: Aluminum (Polished)<\/span>. (Figure Step 7A, 7B, 7C, 7D, and 7E)<\/p>\n

              \"\"
              Figure Step 7A
              Solid Model – Colored Faces<\/figcaption><\/figure>\n
              \"\"
              Figure Step 7B
              Solid Model – Colored Faces<\/figcaption><\/figure>\n
              \"\"
              Figure Step 7C
              Solid Model – Colored Faces<\/figcaption><\/figure>\n
              \"\"
              Figure Step 7D
              Solid Model – Colored Faces<\/figcaption><\/figure>\n
              \"\"
              Figure Step 7E
              Solid Model – Colored Faces<\/figcaption><\/figure>\n

              Lab Exercise 20-2<\/h1>\n

              Time allowed: 60 minutes.<\/p>\n\n\n\n\n
              Part Name<\/strong>: Inventor Lab 20-2<\/td>\nProject<\/strong>: Inventor Course<\/td>\nUnits<\/strong>: Inches<\/td>\n<\/tr>\n
              Template<\/strong>: N\/A<\/td>\nColor<\/strong>: Blue Gray (Light)<\/td>\nMaterial<\/strong>: Cast Iron<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              Step 1<\/h2>\n

              Open part: Inventor Lab 18-2.ipt<\/span> that you created in Module 18. (Figure Step 1A and 1B)<\/p>\n

              \"\"
              Figure Step 1A
              Solid Model – Home View<\/figcaption><\/figure>\n
              \"\"
              Figure Step 1B
              Solid Model – Without the Small Fillets<\/figcaption><\/figure>\n

              Step 2<\/h2>\n

              Save the file as: Inventor Lab 20-2<\/span>.<\/p>\n

              Step 3<\/h2>\n

              Change the colour to: Blue Gray (Light)<\/span><\/p>\n

              Step 4<\/h2>\n

              Move the End of Part Icon up above the small fillets as shown below. (Figure Step 4)<\/p>\n

              \"\"
              Figure Step 4<\/figcaption><\/figure>\n

              Step 5<\/h2>\n

              Find the following with a precision of 5 decimal points. (Figure Step 5)<\/p>\n

              \"\"
              Figure Step 5<\/figcaption><\/figure>\n

              A The XYZ coordinates of corner A.
              \n____________________________<\/p>\n

              B The distance from corner B to corner C.
              \n____________________________<\/p>\n

              C The distance from corner B to corner D.
              \n____________________________<\/p>\n

              D The area of the shaded area the figure. Do NOT include the area of the cylinder. (Figure Step 5D)<\/p>\n

              ____________________________<\/p>\n

              E The perimeter of the shaded plane. (Figure Step 5E)<\/p>\n

              ____________________________<\/p>\n

              \"\"
              Figure Step 5D and 5E)<\/figcaption><\/figure>\n

              F The area of the shaded area of the figure WITHOUT the eight small holes. (Figure Step 5F)
              \n____________________________<\/p>\n

              \"\"
              Figure Step 5F<\/figcaption><\/figure>\n

              Step 6<\/h2>\n

              Move the End of Part icon back to bottom.<\/p>\n

              Step 7<\/h2>\n

              Using the two figures, change the colors of the faces shown to: Blue Pastel<\/span>. (Figure Step 7A and 7B)<\/p>\n

              \"\"
              Figure Step 7A
              Solid Model – Colored Faces<\/figcaption><\/figure>\n
              \"\"
              Figure Step 7B
              Solid Model – Colored Faces<\/figcaption><\/figure>\n

              Step 8<\/h2>\n

              Set the material to: Cast Iron and find the following:<\/p>\n

              A The mass in pounds.
              \n____________________________<\/p>\n

              B The mass in grams.
              \n____________________________<\/p>\n

              Step 9<\/h2>\n

              Save and close the part.<\/p>\n","protected":false},"author":127,"menu_order":4,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-921","chapter","type-chapter","status-publish","hentry"],"part":598,"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/pressbooks\/v2\/chapters\/921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/wp\/v2\/users\/127"}],"version-history":[{"count":1,"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/pressbooks\/v2\/chapters\/921\/revisions"}],"predecessor-version":[{"id":922,"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/pressbooks\/v2\/chapters\/921\/revisions\/922"}],"part":[{"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/pressbooks\/v2\/parts\/598"}],"metadata":[{"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/pressbooks\/v2\/chapters\/921\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/wp\/v2\/media?parent=921"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/pressbooks\/v2\/chapter-type?post=921"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/wp\/v2\/contributor?post=921"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/autodesk\/wp-json\/wp\/v2\/license?post=921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}