A.Programming the origin and the choice of tool change
 
In theory, the programming of the original Tap any location. But in fact, the coordinates of the origin of the inappropriate choice of make computing has become very troublesome. So, programming the coordinate origin and the principle of the following:
 
(1) Programming the choice of origin to facilitate coordinate calculation. As we choose to visually determine the workload of some special points of the coordinate values ??of the parts basis points for the origin of coordinates, to simplify the calculation, but also easy to program to check the.
 
(2) the choice of programming origin to facilitate the processing of the knife. Because knife purpose is to determine the programming origin location on the workpiece blank, that is, to identify the coordinate values ??in the machine coordinate system, the programming on the drawings coordinate system conversion processing of the workpiece coordinate system.
 
(3) programming the origin as much as possible in the design basis and design basis for locating datum. This would avoid the benchmarks do not coincide arising from errors, in order to facilitate to ensure accuracy.
 
(4) symmetric part of the programming origin to be elected in the center of symmetry.

The specific application of which principle, depending on the specific circumstances, under the premise of guaranteeing quality, high operating convenience and efficiency to select.

For the parts, the left and right end of its design basis, its programming origin is located in parts of the surface of the left or right end face of the spindle axis at the intersection.

The tool change position when the turret turn-bit tool changer. Tool change point should be located in the workpiece or fixture external not touch the workpiece or other parts subject to the Carrier transfer and left the safe area. The part of the tool change points are located at the point (150,200) at.



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