Jones and shipley cylindrical grinder CNC conversion, grinding camshafts, cranks

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26 Nov 2024 22:18 - 26 Nov 2024 22:20 #315322 by smc.collins
I have actually found 4 companies that make software, 1 of them is relatively affordable. The issue again becomes generating tools path. I am curious about the Freecad work offset bench however. does freecad support 4th axis or C axis work ? I was considering adding a indicator with a radius foot that could act as a encoder onto a set of centers I have laying around with a encoder to grab the pertinent data. Very open to ideas on all of this BTW. the air cutting issue isn\t that big of a deal. If I can figure out how to generate the roughing profiles on the C axis, I can add a spindle to my lathe, rough turn the camshaft and then rough in the cam lobes. Stand it up and drill the ends or do it as a C-axis drilling open for the locating pin or bolt up.

I am very open to suggestions on all of this BTW  
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Last edit: 26 Nov 2024 22:20 by smc.collins.

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26 Nov 2024 23:16 #315330 by spumco
I'd think you'd want to put the gear holes, and especially the registration hole(s), in the end before you start grinding lobes.  Even with adjustable timing pulley/gears you still need all the lobes to be referenced to something.

Do you have a good workhead for your grinder?  I picked up a surplus high-end grinder work spindle that I was thinking of turning in to a lathe headstock, but that's not likley to happen as it has no through-bore.  I could make you a sweet deal on it... quad AC bearings and runout is not measurable on a 50-millionths indicator.
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28 Nov 2024 05:21 #315435 by smc.collins
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28 Nov 2024 12:27 #315458 by timo
To have some 3d model, just to get the thinking going, would be nice.
Provided it is not "top secret" material.

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30 Nov 2024 00:37 #315596 by smc.collins
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