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Introduction 

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This chapter will describe the Top-Down Design methodology and available tools in Pro/ENGINEER to accomplish this. It  also compares the Top-Down design with Bottom-Up design technique.

Typical workflow of Top-Down Design will be explained in theory and also with the help of practical examples.

   

EXERCISE 1

In this exercise we will learn how to create a simple assembly of parts that are driven by skeleton model.

The topics covered are as follows.

  • Creating Skeleton
  • Assembling the components
  • Using Copy Geometry feature to communicate references
  • Creating model geometry

We will see how to achieve the following goals for the shown assembly of components.

  • Both components should be equal in length and width
  • The shape of the mating surfaces should be same
  • There should be two holes in each component; the diameter of holes should be same and their axis aligned.

 

 

Assembly of Finished Components

EXERCISE 2

In this exercise we will create a simple housing consisting of two parts.

The topics covered are as follows.

  • Understanding what geometry needs to be created in Skeleton model
  • Using Publish Geometry and Copy Geometry features to communicate references
  • Creating model geometry by using references copied from skeleton
  • Creating Interlock details in both components driven by geometry in skeleton

We will see how to achieve the following goals for the shown assembly of components using TDD.

  • Profile of both components should be same
  • Two rectangular holes in the side walls of the components should be aligned and of same width.
 

Assembly of Finished Components





Cross-Section of Assembly showing Interlock Details

 

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Pro/MOLD Tutorials

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Top-Down Design Tutorials


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