The feed and spindle speed looks about right. I'd use carbide then
double or triple feed + speed. With carbide in steel, coolant/oil is
optional. A lot depends on the rigidity of the machine and setup but I'd
also probably take the cut in one pass or maybe two. Making lots of
small passes is hard on the cutter. You end up wearing out the end while
the rest of the cutter is still sharp.
Les
On 01/07/2021 02:54, John Dammeyer wrote:
OK. Just a quick video with of course some questions.
https://youtu.be/BpafBR_Cfuw
Here's the cutting of one flat. As the video comments state:
Spindle RPM 833, Feed Rate 3 ipm, Cutter size 14mm (0.55")
Stepover is 0.15" or about 25% of cutter diameter (2 flute HSS)
Depth of cut is 0.025" per pass
Total depth to create 5/8" hex size is 0.1025". Spin Index turned 60 degrees
and then G-Code started again.
I arrived at these values by trial and error using the MDI interface. Once I
had a reasonable set of movements I used the capture highlighted MDI commands
to clip board. First time for that. Then paste into text file. Add a few
more G-Code items. Then save and load into AXIS.
And run. After the first couple of flats I started doing other things. When
the spindle stopped went over and rotated.
And yes Andy Pugh, I really do need to get my STMBL driven Harmonic Drive going...
<GRIN>
Anyway, my question. With a bit of oil on the part the chips come off smoking.
How's my speed? Too fast? Too slow? Just ..... right? (I sound like
goldilocks and the 3 bears).
The second part had a small disaster but I'll comment on that in a separate
posting.
John
_______________________________________________
Emc-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/emc-users
_______________________________________________
Emc-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/emc-users
