ROLLING MOTION GUIDE UNIT AND METHOD OF MANUFACTURING MOVABLE MEMBER OF THE SAME

摘要

The area of boundary portions between a molding portion of a mold and a movable member body is set to a required minimum level so as to improve the machining efficiency. This guide unit is characterized in that pipes (14) for forming rolling element return passages are provided fixedly in inner circumferential surfaces of through bores (13) formed through a movable block body (6), whereby boundary portions between a molding portion of a mold and the movable block body (6) are limited to a portion between an end surface (61) of the movable block body and a round surface-carrying piece (16) and a portion between a ball rolling groove (10) and a ball retaining portion (12).