Patent ID: 8249742
Filing Date: 2012-08-21
Classification: B23C,B23Q,G05B

Abstract:
1. A machining control method for a machine tool, that comprises a main spindle head capable of relative movement in three perpendicular directions with respect to a workpiece, an additional spindle provided at the main spindle head and capable of moving itself in a specified direction, moving with the relative movement of the main spindle head so as to relatively move with respect to the workpiece, and a tool provided at the additional spindle so as to machine the workpiece, said method comprising: obtaining an approximation surface formed by smoothing so as to be restricted within a movement distance of the additional spindle in a moving direction of the additional spindle with respect to a working surface of the workpiece, and obtaining a difference in a moving direction of the additional spindle between the working surface and the approximation surface, moving the main spindle head relatively along the approximation surface and simultaneously moving the additional spindle by the difference only so as to make the tool provided at the additional spindle machine the workpiece.