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General Mach Discussion / z axis deep problem
« on: November 09, 2012, 07:39:32 AM »
Hello everyone!
I'm new to CNC I'm using VCarve Pro and Mach 3.
I have a problem with the Z axis cutting deep that I can't solve, I have read thousands of posts and searched a lot and played with speeds and feeds and I don't thinks that it is a missing steps problem.
I attached to this post 3 files, a calibration toolpath I made and it's reference sheet and part of a pocket toolpath, both created in VCarve Pro.
When I run the calibration.tap it works very precisely, but adds 0.3 mm to the deep of each pocket, I can't understand why...
The pocket.tap is stranger yet, it is all made to cut at 0.5 mm deep and cuts with 2.0 mm each time I run it.
I don't think it is a missing step problem, because when I stop it or it finishes and I press the goto zero button it goes precisely to zero even the z axis.
I have tried with a piece of paper between the tip of the end mill and the workpiece, with the paper barely moving and after running the pocket.tap and pressing goto zero it returns I check with the paper and it is ok.
Please help!
I'm new to CNC I'm using VCarve Pro and Mach 3.
I have a problem with the Z axis cutting deep that I can't solve, I have read thousands of posts and searched a lot and played with speeds and feeds and I don't thinks that it is a missing steps problem.
I attached to this post 3 files, a calibration toolpath I made and it's reference sheet and part of a pocket toolpath, both created in VCarve Pro.
When I run the calibration.tap it works very precisely, but adds 0.3 mm to the deep of each pocket, I can't understand why...
The pocket.tap is stranger yet, it is all made to cut at 0.5 mm deep and cuts with 2.0 mm each time I run it.
I don't think it is a missing step problem, because when I stop it or it finishes and I press the goto zero button it goes precisely to zero even the z axis.
I have tried with a piece of paper between the tip of the end mill and the workpiece, with the paper barely moving and after running the pocket.tap and pressing goto zero it returns I check with the paper and it is ok.
Please help!