Regardless of whether the control system of the stone engraving machine is controlled by Weihong or the handle, we must determine a point when we are working. All the data in the program are run relative to this point. This is the origin of the workpiece we often mention.
The workpiece origin is the origin of the workpiece coordinates, the origin determined for the workpiece size programming, and generally the starting point of workpiece processing. The workpiece origin can be selected by the programmer. When we select the "Back to workpiece origin..." option, the tool tip will automatically return from the current position to the workpiece origin. In order to ensure that the tool tip can safely pass through the passing space during the process of returning to the origin of the workpiece, without accidents due to collision with obstacles such as workpieces and fixtures, the path of returning to zero is optimized as follows:
If the coordinates in the Z direction of the end point are greater than the coordinates in the Z direction of the starting point, the Z axis will feed to the end position of the Z axis alone, and then the X and Y axes will be linked to reach the destination point.
If the coordinates of the end point in the Z direction are smaller than the coordinates of the starting point in the Z direction, the X and Y axes will reach the X and Y coordinates of the destination point first, and then the Z axis will feed to the end point coordinates of the Z axis independently.
Because the Z coordinate of the end point is often on the processing surface of the workpiece, in order to prevent the tool tip from hitting the workpiece surface or the tool tip after returning to the workpiece zero point, in fact, the Z axis does not return to zero, but an offset value above the zero point. This value is set by the "retraction point" in the processing parameters of the "system parameter window".
The workpiece origin and the mechanical origin of the stone engraving machine should not be confused. There is only one mechanical origin, which generally refers to the limit position of the machine in the X, Y, and Z directions; the workpiece origin can be set at any position of the machine stroke, and multiple.
