Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 06, 2021 - December 07, 2021
This paper proposes a novel method for manufacturing a minute-sized metal nut having a twisted groove with a square cross-section. The manufactured nut engages with our proposing ultra-small diameter and long lead Gaudi screw as a component of the miniature differential screw mechanism. A notable idea is first to machine a spiral shape that splits the nut along with the corners of the square cross-section screw then cut and combine them. Using the proposed manufacturing method, we have realized the production of left and right twisted nuts with a square cross-section, a side length of 2 mm, a lead of 10 mm, and a total length of 4 mm. The divided nut parts were incorporated into a holder created by the stereolithography method and fixed using a cap designed with a particular shape. The manufactured nuts are combined with the miniature Gaudi screw then verified functions as a differential screw mechanism.
