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research-article

A Novel Method for Producing a Conical Skiving Tool with Error-Free Flank Faces for Internal Gear Manufacture

[+] Author and Article Information
yi-pei Shih

Associate Professor, Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Rd., Taipei, 106, Taiwan, ROC
shihyipei@mail.ntust.edu.tw

Yun-Jun Li

Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Rd., Taipei, 106, Taiwan, ROC
formyfarrari@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4038567 History: Received July 08, 2017; Revised November 06, 2017

Abstract

Power skiving for internal gears has drawn increased industry attention in recent years because it has higher precision and productivity than gear shaping or broaching. Yet even though the commonly adopted conical skiving tool has better wear resistance than the cylindrical one, when known design methods are used, the tool geometry is still subject to profile errors. This paper therefore proposes a novel design method for the conical skiving tool and establishes a mathematical model of error-free flank faces. These faces are formed by conjugating the cutting edges on the rake faces - derived from a group of generating gears with progressively decreasing profile shifted coefficients - with the work gear. A mathematical model of the work gear tooth surfaces produced by the cutting edges (over flank faces) of tool at different resharpened depths is then adopted to examine the tooth surface deviations produced with their theoretical equivalents. The results verify the correctness of the mathematical models.

Copyright (c) 2017 by ASME
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