Quote:
Originally Posted by Bruceb
is that your CNC router? can you tell me what bit you were using? What transit speed, plunge speed and spindle speed you were using?
What is the depth of cut per pass?
Thanks
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We're a rookie team so our process has been evolving constantly. In the video it is a 3/16" spiral O bit (we purchased them here
http://www.toolstoday.com/p-5801-sol...uter-bits.aspx , part number 51478).
Feed with this setup was 30 IPM feed, 2 IPM plunge, 0.07 depth of cut and either 13000 or 16000 RPM I can't remember. For this cut we did a contour of the hole instead of a helical bore.
We use mastercam, if you do too, check out our mastercam files here:
https://www.dropbox.com/sh/h7jbyoq3w...HiVc/mastercam
We started breaking bits once we ramped up our manufacturing of parts, so I think we're going to switch to a cheaper 1/8" bits from amazon in a pinch and I haven't found a supplier yet. The rigidity of our machine is not great, it's a 24"x30" cnc router, with variable speed 13000 rpm - >20000rpm. We're making parts, and still breaking bits. Any advice?
We've switched to 0.03 depth of cut or less to help reduce breakage. We don't have enough data and aren't being scientific enough to really tell what is giving us better results yet. But time will tell.