Transactions of Materials and Heat Treatment

Title：Structural analysis and optimization design on servo direct drive screw press

Authors： Chen Lei Wu Jifa Wang Zongshen Cui Laisheng Zhu Lihua

Unit： Shandong University of Technology Zibo Aorike Electromechanical Technology Co Ltd

KeyWords： servo direct drive screw press screw stiffness analysis valve

ClassificationCode：TG315

year,vol(issue):pagenumber：2020,45(12):122-129

Abstract：

The screw in transmission mechanism of a new servo direct drive screw press was numerically simulated by software ANSYS Workbench, and its deformation, equivalent stress and fatigue life were analyzed. The results show that the connection part between upper part of screw shaft shoulder and axial part is the weak area, and the screw structure was optimized. The results show that after optimization, the maximum stress of screw decreases from 23396 MPa to 15849 MPa, and the fatigue life increases from 7118 to 13598×105, demonstrating a significant optimization result. Furthermore, the numerical models of the optimized servo direct drive screw press and a spline direct drive screw press were established, the total deformation and the deformation in the pressing direction of two presses were analyzed, and the stiffness of two presses were calculated respectively and compared. The results show that the deformation of servo direct drive screw press is much lower than that of spline direct drive screw press, and the comprehensive stiffness and body stiffness are obviously enhanced. Finally, the forming processes of valves in the new servo direct drive screw press and the traditional friction press were simulated by software DEFORM-3D respectively, and the temperature, equivalent strain, equivalent stress and forming load were analyzed respectively. The results show that the equivalent stress and equivalent strain of the valves formed by the servo direct drive screw press are greatly reduced and their distributions are more homogeneous, and the quality of valves is significantly improved, which proves the advancement of the new servo direct drive screw press.

Funds：

淄博市校城融合发展计划项目（2018ZBXC037）

陈磊（1997-），男，硕士研究生 E-mail：gtchenlei@163com 通讯作者：王宗申（1986-），男，博士，讲师 E-mail：wangzsh@sduteducn

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