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Author Topic: Using Mach3 fot cnc cutter  (Read 2409 times)

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Using Mach3 fot cnc cutter
« on: May 06, 2014, 02:09:41 PM »
Hi everybody
I have a Chinese CNC cutter, this a 2x1 meter table with three cutting head. This is not a milling head but cutting head to cut thin sheet layer. I am using this machine to produce ski, cut of base material (PE 1.2mm), glass fiber and wood(0.6mm)
The machine comes with a standard control software and this software is really poor and not so reliable.

Machine is connected to the computer via a proprietary card. Two cables with around 45pins and 27pins (approx !)
Machine electronics
  • XY servo motor with end of stroke
  • Blades rotation, also a servo motor with 0° sensor
  • up and down for each head : control a relay to activate pneumatic fonction
  • Stop and start program button

I am robotic engineer, I will manage reverse engineered the pin connection. This is not my concern.

I would to know if mach 3 is adapted to control this kind of machine. there is specific setting setting for this kind of machine
  • blade adjustement, depending on the cutting length of the blade. The cutting point is not center on the rotation axis
  • Cut is continous for small change of angle but blade should be lift up/down in a corner for example

Does this specific setting can be taken into account into mach3. I think this kind of machine is more similar to vynil cutter or plotter than milling machine

Is there people having expereience using mach 3 for plotter?

Thank you for your support.
Jerome
Re: Using Mach3 fot cnc cutter
« Reply #1 on: May 06, 2014, 03:44:49 PM »
Search for     mach3 tangential knife


Jeff
Re: Using Mach3 fot cnc cutter
« Reply #2 on: May 06, 2014, 04:59:35 PM »
Thank you, i found useful information how to configure mach3 for this kind of machine.
I didn't found information how to compensate for the offset. Offset is need because the cutting point of the knife isn't aligned with the center of the A axis. Any proposition to solve it?
Re: Using Mach3 fot cnc cutter
« Reply #3 on: May 07, 2014, 09:01:41 AM »
It may be simpler to re-engineer your knife than to compensate for the offset,
Regards,
Nick

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Re: Using Mach3 fot cnc cutter
« Reply #4 on: May 07, 2014, 10:24:43 AM »
NORMALLY the offsetting would be DONE by your CAM software.

Just a thought, (;-) TP
Re: Using Mach3 fot cnc cutter
« Reply #5 on: May 08, 2014, 02:40:25 PM »
Thank you for the input. I want to use the machine for production, me dream will be to set G code file for my production line and then operator can use it. If they need to generate new G code depending on toll configuration, for instance after a blade replacement.
Could be useful but I would avoid to adjust this in CAM software.

I have three tool using the same A axis but with individual pneumatic up and down and a laser positioning system. To configure this I can use Z, B and C axis to control up down. I also have to tool location offset for three the 3 tools.

I think I have to use a software dedicated for tangential knife than milling like mach3.

Thank you for the support.