Workpiece coordinate system W-CS

Application

In the workpiece coordinate system W-CS you define the position and orientation of the working plane. You do this by programming transformations and tilting the working plane.

Description of function

Properties of the workpiece coordinate system W-CS

The workpiece coordinate system W-CS is a three-dimensional Cartesian coordinate system. Its coordinate origin is the active workpiece preset from the preset table.

Both the position and orientation of the W-CS are defined by basic transformations in the preset table.

Preset management

Transformations in the workpiece coordinate system (W-CS)

HEIDENHAIN recommends using the following transformations in the workpiece coordinate system W-CS:

With these transformations, the position and orientation of the working plane coordinate system WPL-CS are changed.

 
Notice
Danger of collision!
The control reacts differently to the various types of transformations as well as their programmed sequence. Unexpected movements or collisions can occur if the functions are not suitable.
  1. Program only the recommended transformations in the respective reference system
  2. Use tilting functions with spatial angles instead of with axis angles
  3. Use the Simulation mode to test the NC program
 
Machine

In the machine parameter planeOrientation (no. 201202), the machine manufacturer defines whether the control interprets input values of Cycle 19 WORKING PLANE as spatial angles or as axis angles.

The type of tilting function has the following effects on the result:

  • If you tilt using spatial angles (PLANE functions except for PLANE AXIAL or Cycle 19), previously programmed transformations will change the position of the workpiece datum and the orientation of the rotary axes:
    • Shifting with the TRANS DATUM function will change the position of the workpiece datum.
    • Mirroring changes the orientation of the rotary axes. The entire NC program, including the spatial angles, will be mirrored.
  • If you tilt using axis angles (PLANE AXIAL or Cycle 19), a previously programmed mirroring has no effect on the orientation of the rotary axes. You use these functions for direct positioning of the machine axes.

Difference between spatial angles and axis angles

Notes

  • The programmed values in the NC program refer to the input coordinate system I-CS. If you do not program any transformations in the NC program, then the origin and position of the workpiece coordinate system W-CS, the working plane coordinate system WPL-CS, and the I-CS are identical.
  • Input coordinate system I-CS

  • During pure 3-axis machining, the workpiece coordinate system W-CS and the working plane coordinate system WPL-CS are identical. In this case, all transformations influence the input coordinate system I-CS.
  • Working plane coordinate system WPL-CS

  • The result of transformations built upon each other depends on the programming sequence.