Faceting/Linearization leading to poor surface finish

Have you watched this video from Teknics?


It is a quick overview of using their tuning software with Clearpath. Something I think would be interesting would be comparing some of their scope readings with those from halscope where possible. (To see how the position commands from Linuxcnc compare with the commands received by the drive.)

I've used the software on Clearpaths.  It is, without a doubt, the most user-friendly servo/VFD software I've ever seen. And software manual is written in English with as little jargon as possible.

It certainly doesn't have as many features or settings as other drive software, but Teknics has made a monumental effort to make it easy to use and understand.

Auto-tuning isn't likely to send your axis screaming in to a hard stop.  The motor only needs to rotate a couple of turns, although it can be disconcerting when the motor is banging the axis back and forth.  Just put the axis in the middle of the travel and you'll be all set.  You can even set rotation limits on the motor before starting the auto-tune function.

Even if the settings get wiped when you connect - very unlikely - it's stupid easy to run an auto-tune.  The servo may not be optimized per Tormach, but you won't be left with a dead axis.

If the tablet doesn't work out, you can try using Wine to run it - no idea if it'll work, but worth a try.

I know this is an old thread, but I have a 2020 1100MX, with the same issue.

Has there been a solution to this issue?

Thanks
BSAT

BSAT wrote:

I know this is an old thread, but I have a 2020 1100MX, with the same issue.

Has there been a solution to this issue?

Thanks
BSAT
 

Have you checked or adjusted the servo tuning using Teknic's software yet?

The OP never reported back attempting this, and it's step #1 in identifying the faceting.

Step #2 would be checking the steps-per-unit  - can be calculated from the OEM motor config (also available in Teknic's software).

Step #3 would be to see if PathPilot, the Tormach hardware, and the Clearpath are capable of finer resolution.

Step #4 - if #3 is possible, change to finer resolution and make some test cuts.

PathPilot could be set to Clearpath's default steps-per-rev input, and there may be some room left given the Tormach stock max rapids:

 

I have used the Teknic software and run an auto tune and it helped but the problem still exits.

I havent changed the step input resolution settings(which is 3200 steps/rev) because other folks have no problem nor should I. I can see a tuning change being needed per machine but not a reconfig of input vs resolution.

BSAT wrote:

I have used the Teknic software and run an auto tune and it helped but the problem still exits.

I havent changed the step input resolution settings(which is 3200 steps/rev) because other folks have no problem nor should I. I can see a tuning change being needed per machine but not a reconfig of input vs resolution.
 

Do the other folks you're talking about also have 1100MX's?  Just making sure it's an apples-to-apples comparison.

Assuming you and they have the same pitch ballscrews, the next thing to check is the actual gcode.

Is this a CAM-generated toolpath with lots of linear segments, or are the facets present on G2/G3 moves?

Are you using G64 in the problem code?  If so, what is it set to?