Centroid Community CNC Support Forum

If there is going to be Abs/Inc entry, there needs to be a visual indication of the current mode.

Needless to say, this should *not* be tied to the similar entry mode selection over on the Offset Library screen, in the Lathe software.

Sword wrote: ↑Thu Feb 09, 2023 2:32 pm Here's one for sometime down the road. I'd like to see an option for Z axis 100X lock out for the MPG (only use 10X or 1X). This has bit me a few times when first starting out, but have learned my lesson. Using the MPG to jog XY around and forget to dial it down to 10X before jogging the Z axis down. A 0.5" solid carbide v-bit (3 face ground to a point) looked like a railroad spike driven into my softwood board before it faulted out!

S-K Machine wrote: ↑Sun Mar 26, 2023 1:14 pm I have been working on my cylinder head trunnion plate the last few weeks.
20230325_132817.jpg
Yesterday I began to put in the dowel holes and tap some of the holding bolts with a single profile 4 tooth thread mill.
Using the centroid software was very simple and straight forward. The only trouble was that when I was adjusting the diameter in the software to obtain the proper fit, that meant going in and out of the same hole a few times, each pass taking a slightly larger cut.
When now moving over to "fresh" hole of full diameter of cut it was still too tight of a fit. It took a few "spring" passes to get it right.
Reading up on threadmilling, Scientific Cutting Tools, Iscar, OSG and others suggest making multiple passes with lowering the percentage each pass.

Quote from SCT:
When cutting a thread with two passes, cut approximately 65 percent of the thread on the first pass and 35 percent on the finish pass.
For three passes, use a 50/30/20 ratio. For four passes, use a 40/27/20/13 ratio.
The idea is to equalize the side cutting pressure.

Keith, is it possible to add this into the thread mill cycle? So if you select anything more than 1 pass, it would automatically adjust the percentage?
I know this is a major code re-write, and something that is not as simple as 1-2-3.But it would be a nice feature to have cutting harder materials.

Thanks.
Jeff

classicgameswi wrote: ↑Fri Feb 24, 2023 8:19 pm My biggest dislike of the centroid control is the lack of a separate rapid override, I have worked with Mazaks for around 10 years and just can't get used to not being able to separately control the rapid speeds for first parts.

Would be awesome to be able to dial down the rapids but leave feeds alone.

jpmsteadi wrote: ↑Mon Mar 27, 2023 8:59 pm

classicgameswi wrote: ↑Fri Feb 24, 2023 8:19 pm My biggest dislike of the centroid control is the lack of a separate rapid override, I have worked with Mazaks for around 10 years and just can't get used to not being able to separately control the rapid speeds for first parts.

Would be awesome to be able to dial down the rapids but leave feeds alone.

I agree with this 110%

I started on centroid and once I got a Fanuc machine as well I really really love the rapid override. Almost always I know my feedrate and spindle is correct, its just making sure I don't crash on something silly with a rapid. Really the only thing fanuc has over centroid, but it would be nice if you all could add it!