Citizen Watch Company, Ltd.

Citizen Machinery Co., Ltd.

Citizen Holdings Company, Ltd.

Citizen Machinery Miyano Co., Ltd.

Koichi Yabe

Yosuke Ando

Takaichi Nakaya

Shigeo Yanagidaira

Tadayasu Shida

Yosuke Wada

Wataru Katagishi

Shinpei Kai

Provided are a coolant supply device and a machine tool in which ejection of a coolant is easily switched on and off. A coolant supply devicefor supplying a coolant to a workpiece machining area in a machine tool, the coolant supply device comprising: a rotary nozzleformed to have a cylindrical shape and having, at an outer circumferential face thereof having the cylindrical shape, an ejection portfor ejecting the coolant; and a supply device bodyrotatably supporting the rotary nozzle and configured to be capable of supplying the coolant to the rotary nozzle. The supply device body is configured to be capable of switching an ejection allowed range in which the ejection port is opened and an ejection stopped range in which the ejection port is blocked from each other in accordance with rotation of the rotary nozzle.

Coolant supply device and machine tool

A machine tool () includes a spindle () supported on a support surface () of a support body () with such an orientation that the longitudinal axis of the spindle extends along the support surface (). The spindle () is movable in a vertical direction that is perpendicular to the longitudinal axis of the spindle (). The support body () is provided with a ventilation hole () extending through the support body () between the support surface () and a surface () facing in the direction opposite to the support surface (), to open toward the spindle ().

Machine tool

There is provided a work supplying apparatus for automatically and smoothly supplying workpieces having various shapes and sizes from a rear end of a hollow spindle in a machine tool or assembling machine. The work supplying apparatus has a work pushing means for pushing the workpiece held by a holding means into a chuck, and a pusher for pushing and holding the workpiece supplied to a work receiver in the direction of the holding means.

Growing community of inventors

Tokorozawa, Japan

Koichi Yabe