In this exercise, you will match the work plane offsets and diameter dimensions to the parameters. The next step, though, is to create a few more structure parameters.
This exercise continues from Exercise 2: Defining the Manhole Geometry.
- Expand Model Parameters and Size Parameters.
Note that there are entries listed for the work plane offsets, structure parameters and body diameter dimensions.
- Right-click Size Parameters and then click Add. The Edit Part Sizes dialog box is displayed, along with the New Parameter dialog box.
- Select Structure Riser Height 1 and press OK. A new parameter of SRZ1 is displayed in the Edit Part Sizes dialog box.
- In the Edit Part Sizes dialog box, click New to display the New Parameter dialog box. Add the following additional parameters using the New Parameter dialog box:
- Structure Riser Height 2
- Inner Structure Diameter
- Frame Diameter
- Frame Height
- Cone Height
- Slab Thickness
- Barrel Height
- Barrel Pipe Clearance
Each new parameter is displayed in the Edit Part Sizes dialog box. Click OK.
- The next step is to assign some preliminary values to the structure parameters. These will be refined later by adding lists of possible structure sizes. Right-click Model Parameters
Edit. The Model Parameters dialog box is displayed. - Note that the structure parameters have all been assigned an initial value of zero. Change the numbers in the Equation column to match the following constants (all in inches):
- FTh = 15
- SBH = 84
- SBPC = 72
- SBSD = 168
- SBSH = 315
- SCH = 24
- SFD = 24
- SFH = 18
- SID = 144
- SRS = 300
- SRZ1 = 8
- SRZ2 = 70
- SSTh = 12
- SVPC = 192
These constants can be changed later to variables, lists, ranges, or tables for further part customization. Keep the Model Parameters dialog box open for the next step.
- Next, you’ll change each of the work plane offset parameters (WPOf1 through WPOf5) to correspond with a structure parameter. For example, instead of the first offset being approximately 12”, it now corresponds with the SFH parameter. So if you later adjust the SFH parameter, the work plane offset (and its plane geometry, profiles and dimensions) will adjust accordingly.
Select WPOf1, and then select Calculator. The Equation Assistant dialog box is displayed.
- Select the Variable button to use the pull down to select which structure parameter should match this work plane offset. Click SFH. Press OK to exit the Equation Assistant dialog box. The SFH parameter is displayed under the Equation column in the Model Parameters dialog box.
- Repeat the previous two steps for each work plane offset parameter using the following values:
- WPOf2 = SRZ1
- WPOf3 = SCH
- WPOf4 = SRZ2
- WPOf5 = SBSH
Remain in the Model Parameters dialog box for the next step. The following parameters are displayed under the equation column in the Model Parameters dialog box:
WPOf1 8.0000 SFH Workplane Offset 1 WPOf2 8.0000 SRZ1 Workplane Offset 2 WPOf3 24.0000 SCH Workplane Offset 3 WPOf4 120.0000 SRZ2 Workplane Offset 4 WPOf5 172.0000 SBSH Workplane Offset 5 - Next you map each body diameter dimension to a corresponding structure diameter parameter. Using the calculator tool in the Model Parameters dialog box, set the equation column for each body diameter parameter making the following matches:
- BdyD1 = SFD
- BdyD2 = SFD
- BdyD3 = SFD
- BdyD4 = 2*SFD
- BdyD5 = 2*SFD
- BdyD6 = SID
- BdyD7 = SID
The following parameters are displayed under the equation column in the Model Parameters dialog box:
Bdy01 24.0000 SFD Body Diameter 1 Bdy02 24.0000 SFD Body Diameter 2 Bdy03 24.0000 SFD Body Diameter 3 Bdy04 48.0000 2*SFD Body Diameter 4 Bdy05 48.0000 2*SFD Body Diameter 5 Bdy06 144.0000 SID Body Diameter 6 Bdy07 144.0000 SID Body Diameter 7 - Click Close to exit the Model Parameters dialog box. Save the part. The part updates to reflect any dimension changes.
If desired, change your view to isometric, and your visual style to conceptual, to see how the part is progressing.
- Change the Autolayout location to the center of the Rim circular profile. This ensures that the structure is inserted properly into your drawing. Select Layout Data, right-click and then click Select Placement Point. The command line prompts you to Select a Placement Point.
- Use your node OSNAP to select the point at the center of the Rim work plane circular profile. A small, cyan marker is displayed at that location. This marks the structure insertion point.
- Save the part.
To continue this tutorial, go to Exercise 4: Verifying the New Part.