Transactions of Materials and Heat Treatment

Title：Stress analysis on connecting rod adjusting thread of crank press based on Workbench

Authors： Liu Sheng Chen Qisheng Wang Haixia Zhang Fakui

Unit： Shandong University of Science and Technology Shandong Gaomi Gaoduan Machinery Co. Ltd.

KeyWords： adjusting thread threaded connection stress step nuts adjusting screws thread pair

ClassificationCode：TH131.3

year,vol(issue):pagenumber：2020,45(5):153-158

Abstract：

For the uneven stress distribution in connecting rod adjusting threads of press, the finite element analysis and simulation of the connecting rod adjusting thread for a certain type of press were conducted by the two-dimensional plane analysis method in software ANSYS Workbench to solve the problem of teeth damage or even destruction caused by the uneven stress, and the main research focused on the influences of nut materials and shapes on the stress distribution of thread pair. Then, the stress nephograms of thread pair composed of adjusting screws for 45 steel and nuts for HT150, QT600-3 and 45 steel respectively were obtained, and the stress comparison nephograms of step nuts at different step positions were given. The results show that using nuts with the elastic modulus lower than that of the adjusting screws helps to reduce the stress on the screws and makes the stress distribution on the screws more uniform, but it increases the stress on the nuts. However, using step nuts can efficiently reduce the maximum stress on the nuts, and with the step position moving from top to bottom, the stress on the nuts first decreases and then increases, but the stress on the screws cannot be decreased.

Funds：

刘胜（1994-），男，硕士研究生，E-mail：haoke001@qq.com；通讯作者：王海霞（1979-），女，硕士，讲师，E-mail：haixia2226@163.com

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