Re: [CAD_CAM_EDM_DRO] Home-Brew CNC lathe

In a message dated 8/30/2007 3:50:56 P.M. Central Daylight Time,
chinmay61076@... writes:

. . . recently in photo section I have seen photo of Home-Brew CNC lathe by
janrwl . . .<<
I did not make any "formal" drawings for building this. I only made a few
sketches of specifics which I could dimension, to enable figuring OTHER
measurements "on paper first". It would be quite a chore to come up with a set of
formal drawings suitable for making a copy of this machine.

Besides all that, it is a CUSTOM design for making basically ONE kind of
item: Pipeorgan Drawknobs. The "stops" you pull on the organ. I used
stub-ACME metric lead-screws with Turcite preloaded nuts from Ball Screws and
Actuators in San Jose, CA, Superior Electric "square" bipolar Nema 34 steppers, and
a Superior Electric "2000 series" power-supply/driver box. Now, I'd surely
use Mariss' 210 drives instead. Although the Superior electrics work fine,
that cost dozens of times as much as a pair of Gecko 210's plus some cobbled DC
supply for the steppers would have cost! (I did this in 1999!)

The "chassis" is brake-formed 3/16" plate, with 2x2x3/16" angle welded
inside that, to make it a "casting". The Thomson linear ball-bearing products are
very friction-free and precision, but they require use-discipline not
particularly common with woodworking equipment!

If you intend to turn metal and plastic parts, I suggest you select some
fine little "store-bought" lathe, change out the lead-screws and add steppers,
and have at it! If you think you have the ability to MAKE such a machine
"from drawings" then you SURELY have the ability to DO the drawings!
Jan Rowland





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