| 摘要 |
PURPOSE:To improve the precision of a worked surface by installing a means which detects the degree of abrasion of a used working tool and varies the feeding speed of the working tool which is set according to a working program. CONSTITUTION:Onto the bed 10 of a machine body 1, a table 11 for the loading of a workpiece W is guided in shiftable ways in the direction of X-axis, and a column 13 for guiding a spindle head 12 in shiftable ways in the direction of Y-axis is guided in shiftable ways in the direction of Z-axis. The table 11 is shifted in the direction of X-axis by a servomotor 14 fixedly installed onto the bed 10, and the spindle head 12 is shifted in the direction of Y-axis and Z-axis by a servomotor 15 installed at the rear edge part of the bed 10 and a servomotor 16 installed into the upper part of the column 13. These servomotors 14-16 are connected to a numerically controlled device 2 through a drive unit 6.
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