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Topics - jejmule

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General Mach Discussion / Homemade CNC wood planner
« on: May 08, 2014, 02:52:25 PM »
Hi,
I have a ski workshop with friend and I am looking for update on my customized wood planner.
You can look at the cnc planner in action in this video (at 01:00) : http://vimeo.com/79183029

I use this planner to make my wood-core thickness profile. The thickness profile define how the stiffness of the ski on the length.

I did mechanical adaptation on a commercial metabo planner. I remove the hand wheel and place a drive it with a servo motor.
In this king of machine there is an automatic material advance. So I place a wheel with an encoder to mesure the advance of the material.
So I have motorized X axis and a continuous advance on X axis that I can measure
Then I made a custom labview program to control the Z axis depending on the location of the material on the X axis. I have a relationship Z=f(X)

Can I do this with mach3? It means I need a configuration where the Z axis is slave of X axis. Is it possible?

I would like to change the software to be able to make complex thickness profile.

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General Mach Discussion / 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

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