Nsk Corporation

Shigeo Tokura

Hiroki Mizuno

Hiroshi Shibazaki

Katsuhisa Tonooka

Kazuyasu Chiba

Zongxuan Zhang

Masaji Kashimoto

Takayuki Kurashima

An assembly apparatus for assembling a ball screw device includes a support block, a nut arranged in a longitudinal direction, a nut reception base that arranges the nut so that its axial direction towards vertical direction of the assembly apparatus and that supports the nut so as to elevate the nut with respect to the support block, a temporary shaft inserted into an inner diameter side of the nut arranged on the nut reception base and rotatably supported by the support block, an inclined face provided at a forward end portion of the temporary shaft, for guiding balls into the nut raceway groove and a pushing mechanism that has elasticity in the radial direction of the temporary shaft and that pushes balls which are fed into the nut raceway groove by a forward end portion protruding from the outer circumferential face of the temporary shaft.

Assembly apparatus for ball screw device, parts supply device and counter device

The present ball/roller bearing cleaning method is a method which, using cleaning liquid, cleans a bearing to be cleanedcomposed of an inner ring, an outer ring, a rolling bodiesand a retainer. In the cleaning method, the cleaning liquidis made to flow through the bearing to be cleanedfrom the axial direction of the present bearinginto spaces in which the raceway surfaces of the inner and outer ringsandof the bearing to be cleanedsurround the rolling bodiesand retainer. For example, a cylindrical-shaped rotary diehaving spiral groovesis interposed into a cleaning liquid supply passage, and the cleaning liquidis supplied to thereby rotate the cylindrical-shaped rotary die, whereby the cleaning liquid having high pressure can be supplied to the bearing to be cleanedfrom the cylindrical-shaped rotary die

Ball/roller bearing cleaning method and apparatus thereof

In a ring shaped part washing method an ultrasonic vibration plate is disposed in a washing tank filled with a washing fluid , and ultrasonic waves generated by the ultrasonic vibration plate are applied to ring-shaped parts disposed in the washing tank to thereby remove foreign substances stick to the ring-shaped parts therefrom. The ring-shaped parts are disposed inclinedly with respect to the ultrasonic vibration plate in such a manner that the axes of the ring-shaped parts intersect with the plate surface of the ultrasonic vibration plate at an angle &thgr; other than a right angle.

Ring-shaped part washing method and washing jig used in the method

The present ball/roller bearing cleaning method is a method which, using cleaning liquid , cleans a bearing to be cleaned composed of an inner ring , an outer ring , a rolling bodies and a retainer. In the cleaning method, the cleaning liquid is made to flow through the bearing to be cleaned from the axial direction of the present bearing into spaces in which the raceway surfaces of the inner and outer rings and of the bearing to be cleaned surround the rolling bodies and retainer. For example, a cylindrical-shaped rotary die having spiral grooves is interposed into a cleaning liquid supply passage, and the cleaning liquid is supplied to thereby rotate the cylindrical-shaped rotary die , whereby the cleaning liquid having high pressure can be supplied to the bearing to be cleaned from the cylindrical-shaped rotary die

Growing community of inventors

Kanagawa, Japan

Shigeo Tokura