开云体育

Strange Z behavior

SCMWCAD1 All Messages By This Member #155467 开云体育 Hi Everyone, ? Wishing you full tables, joy, and no difficult relatives tomorrow. ? I’m having a problem with my Z axis in Mach 3. I open Mach 3 , set my X, Y, and Z., load in my .NC file, and press start. I’m cutting a part out of 70# density tooling board. It cuts like butter on my mill. My stick out on a .250 3Flt FEM is just over 3 inches. When I press start, everything looks normal. Except the Z. ? I’ve zeroed the Z to the top of my part, which is 2.520”. At this point, my scale shows that I have milled just over an inch. The reading on Mach shows: 2.24”. It seems that for every .250: on Mach is really about an inch off of the part’s Z. ? I have shut down the system and waited a couple of minutes before starting the computer and mill. Then rinse, wash, repeat. ? Does anyone have any experience with this and what did you do to fix it? ? Thanks, ? Terry Wellman
cemacleod@xtra.co.nz All Messages By This Member #155469 Is there a tool length off set in your tool table? You could be setting your z zerowith the tool length off and when you run the g code it gets switched on.? ? Calum ? toggle quoted message Show quoted text On 23/11/2023 03:37 NZDT SCMWCAD1 <scmwcad1@...> wrote: ? ? Hi Everyone, ? Wishing you full tables, joy, and no difficult relatives tomorrow. ? I’m having a problem with my Z axis in Mach 3. I open Mach 3 , set my X, Y, and Z., load in my .NC file, and press start. I’m cutting a part out of 70# density tooling board. It cuts like butter on my mill. My stick out on a .250 3Flt FEM is just over 3 inches. When I press start, everything looks normal. Except the Z. ? I’ve zeroed the Z to the top of my part, which is 2.520”. At this point, my scale shows that I have milled just over an inch. The reading on Mach shows: 2.24”. It seems that for every .250: on Mach is really about an inch off of the part’s Z. ? I have shut down the system and waited a couple of minutes before starting the computer and mill. Then rinse, wash, repeat. ? Does anyone have any experience with this and what did you do to fix it? ? Thanks, ? Terry Wellman
sdmonaco All Messages By This Member #155470 You could also be binding on the z-axis. Try removing stepper motor power and see if you can manually turn the motor shaft.
Art All Messages By This Member #155471 First thing to do is run above material with the spindle turned off. If it doesn't do it, then you have a noisy spindle.

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