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1

General Mach Discussion / Re: Feed Rate is too slow when interpolating

« on: October 15, 2018, 07:43:27 PM »

Thanks.

I just did a test, and if I execute a simple circle command, it moves at full speed on a 1in circle. But if I do the x-y interpolation, it's slower. So it is capable of hitting the values from acceleration it seems if it's just doing a simple circle or line.

I bet you're right about the CV settting stuff. But I am hesitant to modify that and mess up the accuracy as you mention.

2

General Mach Discussion / Feed Rate is too slow when interpolating

« on: October 15, 2018, 04:45:30 PM »

Hi,

I have a quick question. If I'm machining something that uses simple commands (circle, line, arc) I can hit my specified feed rate no problem of course in these scenarios, mach is feeding data to the controller a lot slower. My machine currently runs 4000mm/min on the X and Y axis travel.

However if I run an adaptive strategy for a toolpath, where it is constantly outputting (X,Y) coordinates to interpolate a circle, my feedrates are limited to about 700-1000mm, and it varies, increasing as the radius of the circle increases but it stalls out around 1000mm/min and refuses to go any faster.

My question is simple, what is causing this? I don't know if it's an acceleration limitation, or perhaps my old windows XP machine with 1Gb or ram can't keep up?

I appreciate any insight!