Maybe a few things made this less than a perfect test:
The extrenely light cuts kept the machine going at a constant speed,
within a couple RPM.
Even with this light cut, there was some chatter, which I couldn,t
hear but I can see on the photo. I need to read up on tool shape and
height for threading.
On the other hand there was some runout as I didn't take time to do a
truing pass before cutting.
I'm not sure the speed was right. The piece is 5/8" diameter and I
cut at 300 rpm with coolant, is that about right Steve?
Certainly I'm happy with it, and it's a start for more rigorous
tests, like taking a cut that does slow the machine.
May I ask the more experienced, what size cuts would you take cutting
20 threads per inch on a non-cnc machine?
Jerry
--- In mach1mach2cnc@..., Art <fenerty@a...> wrote:
Jerry:
Your pictures have made me very happy. Its only a start, much more
needs to
be done, but you have proven the concept can work (Which I was very
worried
about, buffered pulse threading was a stretch at best...). I only
now had
the chance to see the photo's and I must say, they exceed my
expectations
for single pulse threading. Hopefully others will find results to be
similar.
Thanks again for your efforts.
Art
www.artofcnc.ca
