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.
Geometric Design and Machining of Variable Pitch Lead Screws with Cylindrical Meshing Elements
Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 70101, R.O.C.
Department of Power Mechanical Engineering, National Yunlin Polytechnic Institute, Huwei, Yunlin, Taiwan 63208, R.O.C.
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Yan, H., and Liu, J. (September 1, 1993). "Geometric Design and Machining of Variable Pitch Lead Screws with Cylindrical Meshing Elements." ASME. J. Mech. Des. September 1993; 115(3): 490–495. https://doi.org/10.1115/1.2919216
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