Fanuc Corporation

Naotake Takeyama

Yasuo Arakawa

Masato Yamamura

Katsushi Hirose

A manual feeding device in a wire electric discharge machine in which selection between a jog feed and a step feed is made automatically without mode change. When an axis motion key is pressed, a timer measures the time for which the key is pressed. When the key is turned off before the time measured reaches a predetermined length of time on the basis of which switching to the jog feed is made, the step feed is performed, so that the axis is moved by a predetermined amount. When the key is pressed for the length of time predetermined for switching to the jog feed, the jog feed is started, so that the axis is moved at a low speed. Further, when the key is pressed for a length of time predetermined for switching to a medium speed, the feed axis is moved at the medium speed, and when the key is pressed for a length of time predetermined for switching to a high speed, the axis is moved at the high speed. Since selection between the step feed and the jog feed and selection of the jog feed speed are automatically made depending on the time for which an axis motion key has been pressed, manual feeding operation to move a table and an upper guide is performed easily, so that the positioning of the table and the upper guide is performed easily.

Manual feed device in wire electric discharge machine

Automated wire connection is performed, and when the wire connection succeeds, the wire feed rate during the next connection is set to a value one stage faster. On the other hand, when connection fails the wire feed rate is set to a value one stage slower.

Wire electric discharge machine

An injection molding machine in which injection units are arranged at any selected surface of a mold to perform an injection molding operation. The machine comprises a main injection unit, which has a main NC unit for controlling servomotors for thrusting and rotating a screw and moving an injection cylinder for each injection unit and for controlling servomotors for clamping the mold and ejecting the molded product, and a sub-injection unit, which has a sub NC unit for controlling only the servomotors for thrusting and rotating the injection screw and moving the injection cylinder for the respective injection unit. The main injection unit and the sub-injection unit is movable toward and away from a mold clamping unit. The main NC unit of the main injection unit controls the timing of operation of the sub-injection unit and controls the servomotors of the main injection unit and the mold clamping unit via a connector.

Growing community of inventors

Aichi, Japan

Naotake Takeyama