Overview
A control requires unambiguous coordinates in order to move an axis to a defined position correctly. For coordinates to be unambiguous, they not only require the values but also a reference system in which these values are valid.
The control differentiates between the following reference systems:
Abbreviation | Meaning | Further information |
---|---|---|
M-CS | Machine coordinate system machine coordinate system | |
B-CS | Basic coordinate system basic coordinate system | |
W-CS | Workpiece coordinate system workpiece coordinate system | |
WPL-CS | Working plane coordinate system working plane coordinate system | |
I-CS | Input coordinate system input coordinate system | |
T-CS | Tool coordinate system tool coordinate system |
The control uses different reference systems for different purposes. For example, this makes it possible to always exchange tools at the exact same position while maintaining the possibility of adapting an NC program to the workpiece position.
The reference systems build upon each other. The machine coordinate system M-CS is the fundamental reference system. The position and orientation of the following reference systems are determined by transformations of the M-CS.
Definition
Transformations
Translatory transformations each enable a shift along a number line. Rotatory transformations enable a rotation around a point.