Problem with Mach3Mill Post for 4th Axis

[hhshermit]

I'm trying to generate numbers around a handwheel dial. Got Fusion to do the design and it simulates fine and even tells me how long it will take to machine. But when I try to generate the G code, the standard Artsoft "Mach3Mill" post processor generates code with inverse time functions for A axis movement. My Gecko 320X driver does not accept this and faults out, even if I slow the speed to 25%.  Is there a different post processor that will use G93 instead of G94?

I saw where it was possible to edit the Post Processor to change "var useInverseTimeFeed = true" to "var useInverseTimeFeed = false" but this did not work for me. The next attempt to post failed with the odd message "This post configuration has not been customized for 5-axis simultaneous tool path". I see no reason why that change would introduce an extra axis.

Any help would be appreciated.

[Arun.rs · Accepted solution]

Hi @hhshermit 

You can use "var useInverseTimeFeed = false" to disable the inverse time feed rate output. The error is because of the post property ' Fourth axis mounted along ' which has to set as per the machine kinematic, either in X of Y.

Try at your end and let me know the feedback.

REgards

[hhshermit · Accepted solution]

Thanks for the help.  At least now the G Code generates without programming errors.  Now I have to find out if I have my A axis parameters properly set in the post processor to get the engraving I need.  If not, I may request a bit more help from you.

[hhshermit]

Thanks for the help.  With those changes and upgrading to Mach4, the code now runs.