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For me it's just an issue of reliability. I bought the machine to run prototype stuff and offload small stuff from my primary machine (big 40x20 bed mill I retrofitted with kflop/kanalog)....

I just picked up a used PM-25MV with clearpath servos on it. I haven't cut anything with it yet as the Z axis has some issues I need to sort out...but they sure can move. I got up to 400 IPM on the X...

This is basically how my spindle works. There is an enable signal sent to the drive. If the drive is powered up and the enable signal is off, the spindle will turn at some low RPM until the AXIS is...

I noticed pretty fast changing from a jerk limited control to kflop but my machine is relatively large and heavy (table and saddle are over 1500lbs) with motion parts that probably weren't optimal...

It is the saddle-gibb-base fit. As soon as the gibb is tight enough to not rock with minimal pressure backlash jumps to that figure (as a result of sticking). I messed with it for a long time with no...

It has helped me quite a bit over the years. I have used it for everything from my G0704 to the Brother Speedios at work, I got the pro license on sale for about the same cost as the hobby license. ...

Popped in here while trying to figure out what I am going to do with my G0704 that has been sitting for years (I got a much bigger industrial machine not long after I converted it) but 5-10% of...

Save some money I said. There is already a perfectly good 50 wire shielded cable ran to the old console :( Now I'm building a VGA and USB cable and wish I had just ran new cables!

445856

Thanks! I really appreciate your help with things. It has been running for 9 hours straight today with no issues. I need to start removing the old control parts, set an MPG up and make a new operator...

According to an ebay post I found for those servo motors, it claims they are the same as "402CNSP0S72"

This might be the data sheet...

Finally ran some steel parts today. I ran 1 bar out of 10 to verify everything and was very happy with the results. 3d and sidewall surface finish is definitely improved over the old control.

This...

Got everything else wired up/coded (coolant, spindle temp and drive fault signals, etc) and the boards mounted to some 1/8 6061. I wish I had planned the actual wiring better but it is what it is...

There are some basic ones here: https://www.dynomotion.com/wiki/index.php/Main_Page#Wiring_Diagrams

My biggest issue has been servo tuning but I have weird servos and had never tuned servos before so it was a bit to learn. So far I muddled my way through some custom code for rigid tapping and my...

Homing (trying to crush my light!) and a test cut in some scrap s30v stainless. I need to re-align the X screw; it's off after I fixed it and is causing a little resonance. Also need to up the...

Feed optimization in Fusion is primarily just to reduce tool loading on inside corners(it defaults to only inside corners). If he is running an "adaptive clearing" HSM toolpath in fusion it shouldn't...

Got homing all figured out. Last night I apparently didn't realize the Move function was relative to the axis zero; so it would appear to work and then either go backward or shoot off in to the limit...

Indeed. I'm not sure what language it is; probably before my time. I spent most of college 15 years ago writing buffer overflows in assembly. I have forgotten almost all of it...but I think I would...

Here is some fun. This is part of the Acramatic 2100 code for homing for anyone who thinks C is bad :)



[SIZE=3]IF :-N_MCH_PWON OR +S_SV_ALARM OR [S1AXIS_UNALN = 0]: RETURN; END IF
BEGIN...

Got Z done and tuned and have been trying to get homing working properly. The machine has a weird set up. The trigger for the home switch is inside the travels of the limit switches. Each trigger...

Looks like it was a post processor issue. I changed to another of the fusion 360 posts and it ran fine. I will dig in to it deeper later and figure out what it was precisely.

After adjusting...

Tom,

I narrowed it down to:

G19 G2 Y1.0838 Z-0.0306 J-0.0018 K0.0249
G0 Z0.2
X1.8847 Y1.3928
Z0.0501

Removing the G19 line lets the program complete; I don't actually have the Z axis...

Well, new problem. I am running a test program trying to figure out what I can get away with acceleration wise in kmotioncnc. The performance I get out of the old control seems like it was very...

Making good progress. I got Y moving and tuned, it was a bigger pain than X was. I copied over the drive parameters from the X drive to the Y drive thinking I would be close by just copying the...

I got finally got the X ballnut fixed. The adhesive that was used to hold in the return "plugs" failed on 3 of the 8 circuits and dropped the balls in the saddle. Got it all re-packed and moving...

Put on hold temporarily; I discovered my X ball screw had dropped 2 return plugs :) going to have to fix it before I make any more headway.

Thanks again Tom!

I tweaked everything a little more today, including lowering accel and got it smoother at lower speeds with a little less error. I can still feel the servoing a bit more than the...

Last test file

Yes, it moves 10 inches. I turned P down some like you suggested. Raised D until I got resonance again and then started playing with I and VFF. I also added the 2nd order low pass filter per the...

Thanks Tom.

1000000 works if I turn the error limit up to 4000, it peaks at about 1800 for output there. I picked the other value just as it was the rapid limit from the factory.

Here are the...