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Production method of the ball screw nut and steering ball screw and linear guide device using ball screw nut, the ball screw nut
Production method of the ball screw nut and steering ball screw and linear guide device using ball screw nut, the ball screw nut
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机译:滚珠丝杠螺母,转向滚珠丝杠的制造方法以及使用滚珠丝杠螺母的直线引导装置,滚珠丝杠螺母
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摘要
PROBLEM TO BE SOLVED: To provide a ball screw nut and its manufacturing method whereby it is practicable to form a ball screw having a ball running groove of small diameter and large lead, lessen the surface roughness of the groove, and generate an accurate R-shape of groove. ;SOLUTION: A ball running groove 1c is formed by a rolling process at the internal circumferential surface of a ball screw nut 1. Because of this groove formation process not by grinding but by rolling, even a ball screw nut 1 of a small diameter and large lead can be manufactured. The surface of the groove 1c is processed into a flat surface with no unevenness provided owing to the plasticity processing during the rolling, which offers a specular finish surface, whereby the surface roughness is decreased. The rolling is executed with a rolling tap which involves less wear and excellent durability, and an accurate R-shape of groove is obtained.;COPYRIGHT: (C)2000,JPO
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