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General Mach Discussion / Mach3 Z Axis Travel Not Complete for Next Instruction.
« on: July 14, 2016, 01:47:09 PM »
Hello,
I am new to Mach3 but have been picking it up quickly.
I am currently seeing a problem and am not sure where to look to resolve it. When my Z axis goes to position it is not quite completely at the exact cutting depth when Mach3 sends the next instructions so I am seeing a little bit of a ramp occur when it starts to cut. I am using this to etch circuit boards at a 0.1mm resolution and this is causing a problem when the GCode picks up and moves the cutter to the next location it isn't quite reaching complete cutting depth on its way back down which is causing it to not cut all the way through the copper just at the start of the X and Y movements for like .1mm. I am not sure if this is related to how far I am coming off the board between cuts or how deep I am going, or related to deceleration so that Mach3 is sending the next instruction just before the Z axis has completed its travel. I have tuned the motors and have excellent accuracy however I keep seeing this one problem with just the Z Axis. I keep thinking Mach3 should be waiting for the depth to be reached then moving, which is why I think the machine just hasn't caught up to Mach3. However the distances traveled all match up to Mach3 in the end, Mach3 just isn't waiting quite long enough to accomplish this. Can someone tell me if my thoughts are right, or way off, and how I should go about testing and resolving this.
Thank you for any help.
I am new to Mach3 but have been picking it up quickly.
I am currently seeing a problem and am not sure where to look to resolve it. When my Z axis goes to position it is not quite completely at the exact cutting depth when Mach3 sends the next instructions so I am seeing a little bit of a ramp occur when it starts to cut. I am using this to etch circuit boards at a 0.1mm resolution and this is causing a problem when the GCode picks up and moves the cutter to the next location it isn't quite reaching complete cutting depth on its way back down which is causing it to not cut all the way through the copper just at the start of the X and Y movements for like .1mm. I am not sure if this is related to how far I am coming off the board between cuts or how deep I am going, or related to deceleration so that Mach3 is sending the next instruction just before the Z axis has completed its travel. I have tuned the motors and have excellent accuracy however I keep seeing this one problem with just the Z Axis. I keep thinking Mach3 should be waiting for the depth to be reached then moving, which is why I think the machine just hasn't caught up to Mach3. However the distances traveled all match up to Mach3 in the end, Mach3 just isn't waiting quite long enough to accomplish this. Can someone tell me if my thoughts are right, or way off, and how I should go about testing and resolving this.
Thank you for any help.