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RESEARCH PAPERS

Geometric Design and Machining of Variable Pitch Lead Screws with Cylindrical Meshing Elements

[+] Author and Article Information
Hong-Sen Yan

Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 70101, R.O.C.

Jen-Yu Liu

Department of Power Mechanical Engineering, National Yunlin Polytechnic Institute, Huwei, Yunlin, Taiwan 63208, R.O.C.

J. Mech. Des 115(3), 490-495 (Sep 01, 1993) (6 pages) doi:10.1115/1.2919216 History: Received October 01, 1991; Revised April 01, 1992; Online June 02, 2008

Abstract

This paper derives the surface geometry and machine tool settings for a double threaded variable pitch lead screw with four cylindrical meshing elements. A 4-axis machining center with a rotary milling head attachment is adopted for the manufacturing of the profiles of the screws. And, based on the developed surface equations and the required settings, the authors develop a computer program for solid modeling to simulate the surface geometry of such a mechanism before and after machining. The result of this work is necessary for the task of computer-aided design and manufacturing of the variable pitch lead screw transmission mechanisms for industrial applications, e.g., in shuttleless weaving looms.

Copyright © 1993 by The American Society of Mechanical Engineers
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