Step 1 Initialize the hub project using the information provided below:
First Part .../hub/mdp_hub Units default (Inch) Proj Name default (mdp_hub) Mold Csys default
Shrinkage Scale Factor 1.005
Step 2 Create a body suitable for a user defined workpiece.
In the interest of conserving classroom time, we have supplied construction steps for an appropriate cylindrical body.
Window to mdp_hub_parting and Fit the view. Make layer 2 the Work Layer.
Choose Application Modeling.
Choose Insert Form Feature Cylinder... Choose Diameter, Height.
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In the Vector Constructor, choose ZC Axis, then OK.
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Enter the following parameters, and choose OK.
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In the Point Constructor, choose Reset to clear previous
input, enter ZC -0.75 (notice the negative value) then choose OK.
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A cylinder appears, completely encompassing the volume of the product model.
Cancel from the Vector Constructor.
Step 3 Identify the cylinder as the work piece.
When you enter Modeling, the MoldWizard toolbar may not be displayed. If this is the case, either:
Choose Application Õ Gateway... or
Remain in modeling, use the MB3 menu over a toolbar area to activate the MoldWizard toolbar. TIP
Choose the Work Piece icon. Choose the option Cavity_Core.
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Make layer 2 Selectable.
Select and confirm if necessary the cylindrical body you just
created.
Choose OK in the Work Piece Dimensions dialog.
MoldWizard has identified the body you selected as the work piece.
Step 4 Define Parting Lines.
Removing the work piece cylinder from the display will better illustrate the elements of this step:
Make layer 1 the Work Layer and layer 2 Invisible. Choose the Parting icon.
Set/Verify Auto Process to OFF (unchecked). Choose Parting Lines.
The Parting Lines dialog opens.
Choose Auto Search Parting Lines.
The Search Parting Lines dialog opens and the body highlights with a vector arrow pointing up.
Choose Apply.
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Step 5 Auto Patch the interior hole.
Choose Auto Patch in the Search Parting Lines dialog.
The Patch Loop Selections dialog opens and the internal parting loop highlights:
Choose Auto Patch again, in the Patch Loops Selection
dialog.
A Sheet body is created to patch the interior loop.
Choose Back.
The Search Parting Lines dialog appears.
Choose OK in the Search Parting Lines dialog.
The Parting Lines dialog opens and the exterior parting loop is displayed in green.
Choose OK in the Parting Lines dialog to accept the
displayed parting loop.
The Parting Functions dialog opens. The parting loop changes from green to magenta. This color change is a visual cue that
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Choose Parting Surfaces.
The Create Parting Surfaces dialog opens.
Choose Create Parting Surfaces.
The following Warnings dialog opens:
Choose OK in the Warnings dialog.
The Auto Process feature causes the Extract Regions dialog to open.
Fit the view if the entire parting sheet is not visible.
Step 7 Identify core and cavity faces.
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Open the Model Navigator window.
The most recent feature is CAVITY_EXTRACT_BODY, a copy of CORE_SURF_TRIMMED_SHEET.
In the Extract Regions dialog, choose OK.
The extracted region features appears at the end of the feature list.
The Auto Process feature causes the Cavity & Core dialog to open.
Close the Model Navigator window.
Step 8 Create tooling inserts.
In the Core & Cavity dialog, choose Create Cavity.
A Select Sheets dialog opens.
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In the Core & Cavity dialog, choose Create Core.
A Select Sheets dialog opens.
Choose OK in the Select Sheets dialog.
The core insert is displayed.
How Does it Work?
When the cylinder was identified as the work piece,
MoldWizard updated the WAVE linked bodies to point to the cylinder instead of the default rectangular seed block.
To create the cavity, a copy of the cylinder was trimmed using the extracted Cavity Face Regions, the patch sheet, and the parting sheet.
To create the core, a copy of the cylinder was trimmed using the extracted Core Face Regions, the patch sheet, and the parting sheet.
Choose OK.
Step 9 Save your work.
Chose File Close Save All and Close.
Later, you will use the hub assembly to create a circular layout. This concludes Activity 2-3.
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SUMMARY We discussed the activities surrounding a mold
project intialization. You had a preview of tooling development process functions that will be explained in detail in the following lessons. In this lesson you:
Initialized new mold projects.
Reviewed the MoldWizard Assembly
Structure.
Set Mold Coordinate Systems.
Reviewed the Scale function used for
Shrinkage Factors.
Created a user defined work piece and
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Parting Preparation
Lesson 3PURPOSE You will learn methods and procedures used to prepare the
Parting Part for its role as WAVE parent of the cavity and core.
OBJECTIVES Upon completion of this lesson, you will be able to:
Use the Product Design Advisor to analyze a
product model.
Apply Solid Patch Up methods that include: Solid Patch.
Planar Patch.
Learn about and use Sheet Patch Up methods that include: Surface Patch and Edge Patch.
Patching with Existing Surfaces. Using Enlarge Surface.
Learn and use solid Split Methods. Use the Create Patch Block function.
This section contains the following activities.
Activity Page
3-1 Product Design Advisor . . . 3-4 3-2Planar Patches . . . 3-12 3-3 Surface and Edge Patches . . . 3-22 3-4 Patch Blocks . . . 3-31 3-5 Solid Patch Compensation in the Tool . . . 3-41 3-6 Enlarge Surface . . . 3-58
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Tools
MoldWizard offers a robust set of Tools for Parting Preparation.
When a product model has holes or gaps in the natural" parting, the moldmaker must define geometry to represent shut off faces. A shut off is an area where core and cavity steel contact each other directly in the mold. It is necessary to define geometry in shut off areas for two reasons:
CAM requires geometry to position
a cutter on the core or cavity steel. This is true whether the shut off is complex or a simple plane.
Unigraphics requires a contiguous
sheet to trim a workpiece to the core or cavity contours.
You used Auto Patch earlier. Auto Patch is an example of MoldWizard's ability to define the geometry of shut off faces.
MoldWizard Tools provide several options to cover cases unsuitable for auto patch.
The Tools dialog also provides access to the Product Design Advisor, a powerful aid to verify whether the as designed" parting and
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