All linear motion to 0.0001 segments

[Steve Landkamer]

I am trying to get a post to break up all linear motion to 0.0001 segments.

I have set the Configuration Tolerance settings for Curve Min & Max to 0.00005. (that is as small as it allows)

Also in plin0 I have set:

brklinestype$ = 11

brklineslen$ = .000000001

 

We are still seeing motion with .005 step sizes. How can I get the step sizes smaller?

 

TIA

Steve

[Chris McIntosh]

Weird! After some quick test I actually got the best result by setting brklinelen$ = 0.00001.

 

I'm not sure what all your tolerance settings are in the control def, but changing brklinelen$ has some unexpected results for me. Everything worked as expected when it was set to 0.1,0.01, and 0.001. Setting it to 0.0001 (which should be the value to break up as you want it), the post broke up the Z moves correctly, but failed to break the XY motion. I changed the NC precision and general math function tolerance to 0.00001 in the control def and set the brklinelen$ to 0.00001 and it seems to be break the lines up to the appropriate length.

 

I'm also assuming you are outputting more the 4 decimal points for your linear axis as you would need to in order to break up a line that is moving in more than one axis at time (eg G91X0.0001Y0.0001 has a longer motion than the required 0.0001).

 

HTH!

[Steve Landkamer]

Thanks Chris!

Come to find out they did not want all linear motion broken up to the small step sizes. Only arcs and "surface toolpaths" need the motion broken up to 0.0001. Min @ CNC suggested the NC Precision in the CD but no avail there either. I have the post outputting 6 places for testing. Even the toolpath tolerance is not reacting the way I thought it would.

Steve

[Chris McIntosh]

yeah, it's a struggle with some of these things unfortunately....