Transactions of Materials and Heat Treatment

Title：Characteristics,technical solutions and applications of 125 t hybrid servo hydraulic press

Authors： Xia Weiming Li Hui Luo Guilin Ji Kuanbin

Unit： Jiangsu Guoli Forging Machine Tool Co. Ltd. Wuhan University

KeyWords： servo hydraulic press AC servo motor suction valve internal gear pump microprocessor control system

ClassificationCode：TG315.4

year,vol(issue):pagenumber：2014,39(9):74-85

Abstract：

The current situation of servo hydraulic press at home and aboard was discussed and the basic principle, characteristics, technical solutions and applications of 125 t hybrid servo hydraulic press were mainly introduced. Advanced microprocessor control system is adopted by 125t hybrid servo hydraulic press to process the pressure and position signal to form a closed loop system and realize a precise control on the flow outputted from internal gear pump which is driven by the AC servo motor could be realized. The control technology of proportional servo with constant pressure which greatly improves the opening speed, stability and reliability, while reduces the hydraulic impact, and forms the hybrid servo hydraulic control of the hydraulic system. The frame of hybrid servo hydraulic press is of adopts high-stiffness design standards to effectively prevent the precise forming position from drifting caused by the frame rebound during pressure releasing. Safety redundancy design was adopted by the hydraulic system to improve the level of security. The electrical control system integrates control technologies from many famous enterprises such as the German Voith, Siemens and Rexroth. 125t hybrid servo hydraulic press has properties of high speed, high efficiency, good precision, strong flexibility, energy conservation and environmental friendly, low noise, and ram speed stepless adjustment and it can also output the required press force at any position during the whole stroke. It is comprehensively applied in fields such as precise parts deformed at fixed pressure and position, deep drawing, improveing the single forming depth, blanking and new material forming process, etc..

Funds：

夏卫明（1981-），男，硕士，工程师

Reference：

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