topic Re: Rotate C axis with Rotated Tool Orientation in HSM Post Processor Forum

Rotate C axis with Rotated Tool Orientation

todd_sandercock — Mon, 13 Feb 2017 01:05:22 GMT

Hi All,

I have a Deckel DMU 60T with a swivelling head (B axis) and rotating table (C axis). To make the most of the table area I am trying to use the tool orientation feature to rotate the table around to access an area of the bed that is not available in the normal travels.

When using:

var abc = machineConfiguration.getABC(W);

For a work plane (W) that has Z along the existing Z:

[[0.0202554, -0.999795, 0], [0.999795, 0.0202554, 0], [0, 0, 1]]

The returned abc is:

(0, 0, 0)

How can I turn the abc vector so that it rotates my workspace around Z? in this case I would expect the C axis rotation to be around 88 degrees.

Thanks

Todd

Re: Rotate C axis with Rotated Tool Orientation

todd_sandercock — Mon, 13 Feb 2017 09:49:17 GMT

Awesome, I think I have solved my own problem:

  if(abc.y == 0){ // If head not tilted
    var T =  W.getRow(0);
    abc = new Vector(0,0, -T.getXYAngle());
    
    // Some safety just to make sure - although impossible for this mill
    try {
      abc = machineConfiguration.remapABC(abc);
      currentMachineABC = abc;
    } catch (e) {
      error(
        localize("Machine angles not supported") + ":"
        + conditional(machineConfiguration.isMachineCoordinate(0), " A" + abcFormat.format(abc.x))
        + conditional(machineConfiguration.isMachineCoordinate(1), " B" + abcFormat.format(abc.y))
        + conditional(machineConfiguration.isMachineCoordinate(2), " C" + abcFormat.format(abc.z))
      );
    }
  }

Re: Rotate C axis with Rotated Tool Orientation

Laurens-3DTechDraw — Tue, 14 Feb 2017 06:02:38 GMT

This is by default in the Heidenhain post if you use Plane Spatial.

Where I'm pretty sure it actually rotates the wrong way. That has been send in to the post team.

Re: Rotate C axis with Rotated Tool Orientation

alex_winter — Tue, 01 Feb 2022 12:17:38 GMT

Machine Simulating this same scenario doesn't work. It just stays at the WCS Orientation regardless of which way my X or Y axis are pointing on tool orientation tab for the toolpath.