Re: [CAD_CAM_EDM_DRO] fine-pitch threadcutting on thinwall tubing

Brian wrote:

>
> Hi, it takes a lot of patience and practice. thread galling is a real
> problem no matter what the material. I worked on a project for a screw
> machine shop, it took about a year before the tap design, machine tight
> enough, and feed steady enough. Must be watched constantly as the slightest
> build up of chips will ruin the part. holding the part is also a challange.
> a new cnc machine can do multipass single point quite well.

This sounds like a neat challenge for DaveK and his TurboCNC.
http://www.dakeng.com/turbo.htm TurboCNC
http://www.dakeng.com/lathe.html 7x10 mini-lathe cnc conversion

He has recently got lathe threading working, and I believe he
mentioned he made 20 passes at his 1/4-20 thread (yes, his is
a very small lathe).

Doug Fortune
http://www.cncKITS.com














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