| 摘要 |
PROBLEM TO BE SOLVED: To machine an inner gear especially and put together the processes by adding a gear shaping function by a pinion cutter to the function of compound machining NC lathe. SOLUTION: A chuck 3 is fitted to the tip of a main spindle 2 for controlling the rotary angle of the main spindle stand 1 of a compound NC lathe and a work W is fixed to this chuck 3. A pinion cutter 11 is mounted to the rotary tool installation shaft 12 of the tool rest turret 5 of the tool rest 4 which can move and position to Z axis and X axis direction. The servo motor 29 by which the rotary tool installation shaft 12 is driven and the main spindle motor for driving the main spindle 2 are synchronizingly rotated and controlled with a certain rate by NC lathe. While synchronizingly rotating the work W installed on the main spindle 2 with a certain rate, at the same time, by reciprocating the rotary tool installation shaft 12 mounted the pinion cutter 11 to the Z axis direction, a gear shaping is carried out.
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