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Unread 29-02-2004, 21:51
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Rob Colatutto Rob Colatutto is offline
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Re: How hard is it to CNC this?

Facing the part on a lathe and taking down the outside diameter will make the time on the cnc mill much less than if you just put a square block of aluminum on. However, if you are using a square block you don't need to drill any center hole in the part, the cnc can do that all for you. If you plan on taking the part down on the lathe then I would reccomend having a center hole of some size larger than 1/2 inch so your machinist can easily use a dial indicator and find the center of the part to make set up much simpler. Having the cnc mill do the center hole to exact dia. will be better than doing it on the lathe if you planned on using a drill bit, if you are using a boring bar then you will be fine making it exact, provided your lathe is true. And yes, make sure you take the keyway out of the drawing before you put it into mastercam, it does not like things like that, and it will try to cut it out if you leave it in there.

[edit] to nicely go from Inventor to Mastercam you will need to save it as a .step file, and then you can import that into Mastercam. If you have Mechanical Desktop installed, I would open to .step into there and save it as a .dwg because Mastercam seems to like them slightly more.
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Last edited by Rob Colatutto : 29-02-2004 at 21:55.
 


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