Revolve and Other DFM Tools

Draft is used to make straight, vertical surfaces angled. This is useful mainly for cast parts where “Draft Angle” is key to production capability of a part. For green sand cast parts to be manufactured to high quality, draft angle needs to be placed on all vertical sides so that the pattern for the part and mold can be set without any cracks or crumbles in the fragile sand mold.

 

Figure 5.8 Part Concept Without Draft for Machining [left] and With Draft for Casting [right]

 

Draft angle is used by selecting faces and specifying a draft angle after activating the command from the CommandManager. There are more advanced options that allow you to choose where the parting line is as well. An example of Draft Angle being used on a machined to cast conversion is shown in Figure 5.8.

Exercise 5.3 Using Draft Features

Download the Machined/Cast Conversion part and apply a 7 degree draft to all outer vertical faces and a 3 degree draft to the shaft support vertical faces as indicated. Follow along with the video before for more detail on what to do.

 

 

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Introduction to SolidWorks Part 1 Copyright © 2021 by melvincrs is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.

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