Is the machining coordinate system the same as the mechanical coordinate system?

Most vertical CNC machining centers or CNC machine tools stipulate: Assuming that the workbench is not moving, the operator is standing in front of the machine tool to observe the movement of the tool. The tool moves to the right as the X axis, inward as the Y axis, and upward as the Z axis, both of which are right-hand flutes. Carr coordinate system. The zero return of each axis of the machine tool is at a certain fixed point, which is the mechanical zero point of the machine tool.

The zero point determined at the position where the workpiece is more convenient for alignment during programming is the programming zero point. The workpieces of the mold factory are mostly rectangular parallelepipeds. Generally, the zero point is selected at the center of symmetry of the workpiece, also called the "four-side centering" position, which is the zero point of the X and Y axes, and the Z value is mostly set at the highest surface.