| 摘要 |
PROBLEM TO BE SOLVED: To machine a work with high accuracy by correcting displacement of a spindle caused depending on the rotating speed in a machine tool for ultraprecise machining. SOLUTION: In this tool 2 fitted to the spindle 1, the cutting position is displaced when the spindle 1 is rotated at a high speed due to fitting accuracy of the spindle 1 and the influence of weight balance. The tip position of the tool fitted to the spindle 1 is measured on the displacements in the directions of X, Y and Z by non-contact type displacement measuring devices 6x, 6y and 6z, and the correction amount is obtained corresponding to the rotating speed of the spindle (12) and stored in a storage device 13. In machining, the correction amount is read corresponding to the spindle speed, and a program command value is corrected to perform machining. Even when the cutting position of the tool is displaced due to high-speed rotation, the program command value is corrected to perform machining, so that high-accuracy ultraprecise machining can be achieved. COPYRIGHT: (C)2007,JPO&INPIT
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