Citizen Holdings Company, Ltd.

Keita Kazuie

Yutaka Shibui

Hajime Matsumaru

At the time of two-dimensionally moving a mobile body of a machine tool, to a predetermined position, a speed of the mobile body is gently increased/decreased at an acceleration/deceleration equal to or less than the maximum acceleration/deceleration, from the time when the mobile body reaches a direction change point. Therefore, the moving time is shortened and a rapid acceleration/deceleration may be avoided.

Movement controller for controlling movement of mobile body of machine tool, machine tool provided with movement controller, and mobile body moving method

In a method of machining a work in a numerically controlled lathe, it is possible to reduce machining cost by shortening idle time at the time of switching and to enhance the lifetime by lessening a load on a feeding mechanism of a tool rest. After completion of the machining of a work W with a tool Ton one tool rest (), the one tool rest () is moved to a standby position B and, at the same time, the other tool rest () is moved from a standby position D and the feed speed of the other tool rest () is controlled such that the one and the other tool rests () simultaneously reach positions C and F preset between the work W and the standby positions B and D.

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Saku, Japan

Keita Kazuie