Transactions of Materials and Heat Treatment

Title：Design on rapid closed hydraulic system and simulation optimization on main parameters for stamping machine

Authors： Zhang Zhenghua1 Duan Haoyun2 Wang Dahao3 Cheng Lihui4

Unit： 1. School of Automobile Henan Vocational and Technical College of Communications 2. Electromechanical Department Shangqiu Technician College 3. School of Mechanical Engineering Jiangnan University 4. Zhengzhou Yutong Bus Co. Ltd.

KeyWords： stamping machine rapid closed hydraulic system accumulator AMESim simulation charging pressure

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):154-158

Abstract：

A rapid closed hydraulic system was designed to solve the limitation problem of the maximum blanking speed for stamping machine. In the process of fast forward and backward, the master cylinder was passively lifted and lowered by the fast cylinder, and a rapid closed system was constituted by plunger cylinder and filling valve. When entering the blanking stage, the accumulator and the quantitative pump together formed an oil source to hydraulically pump the oil into the plunger cylinder. The simulation results show that the accumulator shows a faster reaction speed when the charging pressure is reduced, and 7 MPa is selected as the optimal pre-charging pressure. Under the condition that charging speed does not affect blanking frequency, a larger volume should be selected, and 40 L is finally selected as the optimal volume. When the optimal initial opening amount of charging valve is set to 5.0 mm, there is a certain degree of overshoot, and the rapid response can be made according to the load. When the throttle orifice diameter is Φ2.0 mm, it can enter a stable state in the shortest time without fluctuation phenomenon, showing excellent speed regulation performance.

Funds：

河南省高等学校青年骨干教师培养计划项目(2017GGJS241)；河南省交通运输厅科技计划项目(2015Y10)

张正华（1982-），男，硕士，讲师 E-mail：hnzzh0825@126.com

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