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#1
 
09-01-2009, 09:16 PM
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My homebuilt machine (router) using mach 3 runs choppy on arcs. When I set it to run on CV mode, my steppers stall. I,m only running the machine at 48ipm. Does anyone have any suggestions? Should I slow down my feed rates? I would like to double my feed rates but can't seem to work it out. Any suggestions on motor tunings? Running keling 425's with 24v PS. 1/2-10 Acme's. Thanks, Jeff  |
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#2
09-02-2009, 10:30 AM
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| Turn off all CV options, both in General Config and on Settings page.
__________________ Gerry Mach3 2010 Screenset http://home.comcast.net/~cncwoodworker/2010.html (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |
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#3
09-02-2009, 11:53 AM
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| But I think I want to run in CV mode. Won't that make my machine move smoother? Should I try to slow my feeds till it no longer stalls? Should I just leave it alone? I run some programs with a lot of curves. My feeds are set at 48 but the machine fluctuates between 4 and 18 through 90% of the cutting. Wouldn't this be a case of "slow down to go faster"? If I lowered my feeds to 30ipm with CV mode on, wouldn't it cut this in about 1/2 the time? Or, am I just confused? Also, what are the pro's and con's of CV mode please. Thanks, Jeff |
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#4
09-02-2009, 12:37 PM
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| Turn off the CV options, not CV mode. If you're not reaching the commanded feedrate, it's probably due to a low acceleration setting. What is your accel set at?
__________________ Gerry Mach3 2010 Screenset http://home.comcast.net/~cncwoodworker/2010.html (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |
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#6
09-02-2009, 06:13 PM
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| Can you get them up to 8 or 9? You'll see much faster cut times. Even if you have to lower the velocity a bit.
__________________ Gerry Mach3 2010 Screenset http://home.comcast.net/~cncwoodworker/2010.html (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |
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