Transactions of Materials and Heat Treatment

Title：Analysis on forming effect between adjacent cogging of cold strike spline

Authors： Niu Ting Li Yongtang Wang Limin Lu Hongyu

Unit： Taiyuan University of Science and Technology Shanxi Key Laboratory of Metal Forming Theory and Technology Qingdao Production and Construction Machinery Factory

KeyWords： cold strike forming spline adjacent cogging ABAQUS microstructure local surface forming

ClassificationCode：TG315.79

year,vol(issue):pagenumber：2017,42(11):66-72

Abstract：

Based on the principle of cold strike forming for spline, the cold strike forming of adjacent cogging was simulated by ABAQUS/Explicit, and the stress and strain distributions of adjacent cogging by different striking times were analyzed. Then, a spline shaft was processed by the self-designed LQ200 spline cold striking equipment, and the microstructure and the influence depths of different forming zones were obtained by the optical microscope. The results show that the cold strike forming belongs to the local surface forming, and the stress wave of the striking cogging can spread to the adjacent cogging. Then, the influences of stress wave on tooth top, tooth flank and tooth root weaken gradually, and the influence on the strain of adjacent cogging is small when the striking cogging is struck. The experimental results show that the influence area of tooth top is above the pitch crack, and the influence area is larger than that of tooth flank and tooth roof. Therefore, the influence area is about 1 mm in the depth of tooth flank, and the influence area is about 600 μm in the depth of tooth roof.

Funds：

国家自然科学基金资助项目（51475316）；山西省重点学科建设经费资助

作者简介：牛婷（1986-），女，博士研究生 E-mail：niuting861010@163.com 通讯作者：李永堂（1957-），男，博士，教授 E-mail：liyongtang@tyust.edu.cn

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