Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: corydoras on September 29, 2015, 02:41:01 PM
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If I try to cut a circle (R65) with a 6mm endmill at 1500 mm/min there is no problem. I can run the same code at 6000mm with no problem.
BUT, if i run the code at 1500 mm/min and use feedrate override at 200% (F3000) it "stutters" (shakes) at the all the 90 degree point of the circle (where x and Y mixes).
The machine shows that it can handle 6000 mm+, could it be that its my computer having problems calculating and sending the pulsestream in the parallel port when using override?
Its not a very fast computer, but the mach 3 test tool says it can handle 35khz, and the software is set to that.
any ideas?
Cory
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if you are running Mach3 then check the version number.
I think version # 62 works ok but not 66.
Ray
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Hi Ray
I am running v3.043.066.
Are there any known bugs on pulse control or similar on the .066 v?
I just installed it, and of course used the latest version.
best regards
Cory
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yes I had the same problem you are having with version 66. Version 62 seems to work fine.
Ray
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Using high FRO values is a known issue with Mach3. It's best to program at double the feedrate, and start with a FRO of 50%.
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Thanks for the info guys, I have to make some testcuts with different feedrates first to determine the settings in the tooltable.
I cannt seem to find any other versions than 0.66 on the download site.
Are there any other sources for previous versions?
BR
C
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The FTP site has older versions.
http://www.machsupport.com/software/downloads-updates/#tabs-6