Thk Co., Ltd.

Nec Corporation

Makoto Iizumi

Hidekazu Michioka

Akimasa Yoshida

Shinji Aoki

Yoshinobu Tanaka

Satoshi Fujita

Toshiyuki Aso

Tatsumi Ide

Akira Sekiguchi

Kentaro Nishimura

Takahiro Mochizuki

Yoshihiro Kimura

Masayuki Morimoto

Hitoshi Goto

Toshiyuki Mukaiyama

Tsutomu Ono

Noboru Kanzawa

The rotary table device includes a base, a motor, a rotary drive shaft and a cross-roller bearing. An outer ring is rotationally driven through engagement of a pinion gear formed at a shaft end of the rotary rive shaft with a rack gear formed on the outer ring and transmission of a rotary drive force from the rotary drive shaft to the outer ring. The outer ring is formed in a hollow cylindrical shape covering a side of an inner ring, includes a table capable of mounting an external member on one side of the hollow cylindrical shape, and is integrated with the rack gear formed over an entire circumference of the other side thereof. With such a configuration, a rotary table device that can realize reduction in height, size and weight can be provided.

Rotary table device

A motion device includes an orbital element, and a moving element into which the orbital element is inserted, the moving element guided so as to be able to reciprocate in a longitudinal direction of the orbital element, wherein at ends of the moving element, cylindrical protrusions into which the orbital element is inserted are formed and protrude in the longitudinal direction of the orbital element so as to be pivotally supportable on bearings, and total size around the orbital element in a direction perpendicular to the longitudinal direction of the protrusions is smaller than that of the moving element.

Motion device and moving device

Disclosed is a micro actuator capable of being formed in compact as a whole, such as 10 mm in diameter by diminishing a difference between a stroke distance of a moving member and an overall length, and by reducing a sectional area taken in a direction orthogonal to a stroke direction. The micro actuator includes: a spline shaft formed as a cylinder with a hollow part and having an axially extending slit opening; a spline nut fit-engaged with the spline shaft and axially guiding the spline shaft; a pair of end caps fixed to openings at both ends of the spline shaft; a magnet rod supported at both ends within the hollow part of the spline shaft by the end caps; and a forcer loosely fit-engaged with a periphery of the magnet rod within the hollow part of the spline shaft to constitute a linear motor together with the magnet rod and connected with the spline nut through the slit opening.

Micro actuator

A roller screw of the present invention has a screw shafthaving a roller rolling surfacespirally formed with a lead on an outer surface thereof; a nuthaving a roller rolling surfacespirally formed on an inner surface thereof to face the roller rolling surfaceof the screw shaft; and a plurality of rollersarranged in a rolling pathbetween the roller rolling surfaceof the screw shaftand the roller rolling surfaceof the nutand moving around the screw shaft while rotating on rotation axes of the rollers. In this roller screw, each of the rotation axesof the rollerssubstantially crosses a center lineof the screw shaft. Since each of the rotation axesof the rollerscrosses the center lineof the screw shaft(in other words, the rollersarranged in the rolling pathare not skewed from the beginning) even when the rolling pathhas the lead, the rollerare allowed to move smoothly.

Roller screw

An electromagnetic relay includes a flat base made of an insulating material, two flexure type electromagnetic relay blocks fixed on the base so as to be point symmetrical with the center of the base and having the same structure, a first contact member including two make contacts respectively opposing the movable contacts of the two electromagnetic relay blocks and at least one first terminal inserted into a first through hole formed in a central portion of the base, and a second contact member including two break contacts respectively opposing the movable contacts of the two electromagnetic relay blocks and at least one second terminal inserted into a second through hole formed in a central portion of the base.

Electromagnet relay

Growing community of inventors

Tokyo, Japan

Makoto Iizumi