| 摘要 |
PURPOSE:To easily measure the edge point of a tandem tool rest lathe, by providing a means, which generates a signal of resettability to the original point only when the edge point is placed in a predetermined area, and a means which decides a tool to pass through a different original point resetting route. CONSTITUTION:A probe Ps has sensor surfaces A, B, C, D of four directions. A register group 6 sets effective distance values from each sensor surface A, B, C, D to both limit lines of an original point reset safety area. An effective distance selecting means 7 selects an effective distance value, corresponding to a contact sensor surface, of the respective effective distance values. An area decision means 9, which compares two calculated area assigned values with the edge point position present value in the time of original point resetting after contact with the sensor surface, decides a tool to be located in the original point reset safety area. An extra tool decision means 10 decides the tool to be an extra tool from the edge point position present value in the time or contact with the sensor surface. |
