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research-article

Synthesis of Shaping Noncircular Gear using a 3-linkage CNC Shaping Machine

[+] Author and Article Information
Fangyan Zheng

School of Automotive Engineering, Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan, 430070, China
382280761@qq.com

Lin Hua

School of Automotive Engineering, Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan, 430070, China
hualin@whut.edu.cn

Xinghui Han

School of Automotive Engineering, Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan, 430070, China
hanxinghuihlp@126.com

Bo Li

School of Logistics Engineering, Wuhan University of Technology, Wuhan, 430063
whlibo163@163.com

Ding-fang Chen

School of Logistics Engineering, Wuhan University of Technology, Wuhan, 430063
cadcs@126.com

1Corresponding author.

ASME doi:10.1115/1.4035794 History: Received June 30, 2016; Revised January 09, 2017

Abstract

Gear shaping, commonly regarded as the most widely used machining method for cylindrical gear, is in fact an ideal manufacturing method for noncircular gear with helix or straight tooth lengthwise, due to its merit of not being restricted by gear type or pitch curve in contrast to gear hobbing. However, concerning researches are mainly focused on the generation of noncircular straight external gear, paying rare attention to noncircular internal gear and noncircular helix gear. Considering that, through using a 3-linkage CNC shaping machine, this paper aims to synthesize the theory and practice of noncircular gear shaping in general, covering external gear, internal gear, gear with straight tooth lengthwise as well as gear with helix tooth lengthwise. This paper first establishes the generating mathematical model in theory; then deduces the linkage shaping relations in a 3-linkage CNC shaping machine; later describes the manufacturing process in practice; and finally, practically shapes three noncircular gears with different gear type and tooth lengthwise, validating both the correctness of the proposed shaping model and the appropriateness of the manufacturing process.

Copyright (c) 2017 by ASME
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