jumpy rapid traverse

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1438631165
Posts: 4
Joined: Mon Aug 03, 2015 1:10 pm

jumpy rapid traverse

Post by 1438631165 »

Hi Everyone,
I'm having an issue with a 4th axis parallel finishing toolpath. The rapid traverse above the part is broken into several sections of g-code, all of them straight moves along the Y-axis. This is very hard on the machine, causing jittery starts and stops. Here is a sample:

Z1.3549 B-6.000 F150.
G00 Y23.4800 B-6.600
Y20.8600 B-7.200
Y18.2400 B-7.800
Y15.6200 B-8.400
Y13.0000 B-9.000
Y10.3800 B-9.600
Y7.7600 B-10.200
Y5.1400 B-10.800
Y2.5200 B-11.400
Y-0.1000 B-12.000
G01 Z0.9000 B-12.000 F150.
Y26.1000 B-12.000 F125.

The cutting depth is Z0.9, on the second to last line. Above it is the rapid transfer. For some reason it is broken up into a series of Y/B moves, 0.6 degrees at a time. I don't see anything in the post processor settings that is relevant, and nothing in the options for the parallel finishing path.
Any thoughts?
MecSoft Support
Posts: 2405
Joined: Wed Aug 01, 2007 4:15 pm
Location: Irvine, CA, USA
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Re: jumpy rapid traverse

Post by MecSoft Support »

As the 4 axis toolpath interpolates the transfer path when the cutter needs to retract and move from end of one cut location to the start of the next cut location, these transfer motions are split up into multiple steps.
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