Step 7.0: Design-Objectives - Why use a Design-Set

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Step 7.0: Design-Objectives - Why use a Design-Set

The Design Objective

GST-7-001

Open the model from Tutorial 6A.1. Save the model as 7-A

What are the Design Objectives?

The design objectives are to make sure the:

•the Pressure Angle of the Cam-Profile is within ±30º

•the distance to the Cam-Profile* from the center of the Cam-Shaft is less than 100mm but more than 50mm

•the center of the Cam-Shaft can move only within Minimum and Maximum Limits.

Why use Design-Sets?

Let us imagine a design objective: Improve the pressure-angle between a Cam and Follower-Roller.

If we DO NOT use a Design-Set, you must:

1.Edit a Part...edit a dimension...close the Part-Editor...

2.Review the design objective - has it improved?

3.Edit a FB...edit a parameter...close the FB dialog...

4.Review the design objective - has it improved?

Repeat 1 to 4 again, and again, and again, ...

If we DO use a Design-Set, you can:

After you add to a Design-Set all of those dimensions and parameters that you believe can improve or influence a design objective.

1.Edit the dimensions and parameters within the Design-Set

2.Watch the design objective change (e.g. in a Graph FB) as you edit the dimensions and parameters

The Power of a Design-Set:

1.The effect on a design objective as you edit dimensions and parameters is immediate.

2.The sensitivity of the design objective to each dimension and parameter is much easier to understand

3.It is convenient.

It is much easier for you, and for others who may also need to update the model, in the future.

If you rename each Dimension and also the Design-Set FB, it is even easier to update the model in the future.