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General Mach Discussion / mach3 randomly doesnt follow the correct toolpath
« on: February 06, 2018, 07:12:57 PM »
Hi
i have a cnc machine with 5 axis , i usually use only 3 axis ,i have this machine for a month now ,but i cannot run it for long toolpaths ,even with short toolpaths it runs wrongly..
it has 5 stepper motor which are set to 4.5 Amp ,and the motors are 4.5 amp too ...the power supply in total has around 25 AMP of 36 volt...
the problem i have is when i run a toolpath ,even a short one ,sometimes (on short ones it happens 1 in 10 or 15 of the exact same gcode) means same gcode that has been running correctly ,it happens when i re run it sometimes... or with long toolpaths ,it definitely happens a few times...
i generate the gcode by fusion 360 and i let it to step down maybe 0.1mm or 0.2... then when it completely finishes the first or second or third row of gcodes ,when the z goes down for example from -0.3mm to 0.4mm ,the coordinate of x and y ,completely changes ,and the rest of gcode and toolpath runs in a different spot.... that ruins the workpiece completely... and also the tool breaks sometimes...
the computer where the visual toolpath is showing ,actually shows the toolpath coordinate has been moved... and starting the rest of it in a diffrent spot.... and also on the workpiece... i cant say its the gcode ,because sometimes same gcode works well and no problem ,next time same gcode gets the same problem ,and the problem can be in any level of z ...when z is changing and going down another level....
here i show u the pic of the vistual toolpath on mach3 ,and the workpiece ,which u can see how the toolpath is being followed in a different spot and the workpiece completely being ruined....
please help me , i am new in this and need you guys help ! i thank you for your help and sharing your knowledge
i have a cnc machine with 5 axis , i usually use only 3 axis ,i have this machine for a month now ,but i cannot run it for long toolpaths ,even with short toolpaths it runs wrongly..
it has 5 stepper motor which are set to 4.5 Amp ,and the motors are 4.5 amp too ...the power supply in total has around 25 AMP of 36 volt...
the problem i have is when i run a toolpath ,even a short one ,sometimes (on short ones it happens 1 in 10 or 15 of the exact same gcode) means same gcode that has been running correctly ,it happens when i re run it sometimes... or with long toolpaths ,it definitely happens a few times...
i generate the gcode by fusion 360 and i let it to step down maybe 0.1mm or 0.2... then when it completely finishes the first or second or third row of gcodes ,when the z goes down for example from -0.3mm to 0.4mm ,the coordinate of x and y ,completely changes ,and the rest of gcode and toolpath runs in a different spot.... that ruins the workpiece completely... and also the tool breaks sometimes...
the computer where the visual toolpath is showing ,actually shows the toolpath coordinate has been moved... and starting the rest of it in a diffrent spot.... and also on the workpiece... i cant say its the gcode ,because sometimes same gcode works well and no problem ,next time same gcode gets the same problem ,and the problem can be in any level of z ...when z is changing and going down another level....
here i show u the pic of the vistual toolpath on mach3 ,and the workpiece ,which u can see how the toolpath is being followed in a different spot and the workpiece completely being ruined....
please help me , i am new in this and need you guys help ! i thank you for your help and sharing your knowledge