Transactions of Materials and Heat Treatment

Title：Improvement of control system for 120 MN free forging hydraulic press

Authors： Hao Liwen

Unit： Chinaippr International Engineering Co. Ltd.

KeyWords： free forging hydraulic press servo control system tolerance of pressing value

ClassificationCode：TG315

year,vol(issue):pagenumber：2014,39(12):75-78

Abstract：

120 MN hydraulic press was improved due to the existing problems of traditional control system such as poor control precision to pressing value, high labor intensity, low production efficiency, big vibration in the pipeline system during operation and serious phenomena of body erosion. The main valve distributor in the control system of 120 MN hydraulic press with traditional pump-accumulator transmission mode is the rocker shaft type distributor. A new type of control system was applied in the modification plan with the existing pumping station and pipeline unchanged. A servo cylinder was installed in rocker arm of the operating valve. A position sensor was installed on the movable beam of this press to measure the distance. After this press was modified, its operation system is simplified, the tolerance of pressing value is controlled within ±1.5 mm, and forging size is more accurately obtained so as to reduce the machining allowance.

Funds：

郝立文（1982-），男，学士，工程师

Reference：

[1]郭淑娟,刘少军,张怀亮.水压机操纵控制系统的改造[J]. 锻压机械,1996，（6）：28.

Guo S J，Liu S J，Zhang H L. Hydraulic press machine control system transform[J]. Forging Machine, 1996，（6）： 28.

[2]孙永涛,郭高升.基于电液伺服的锻造水压机控制系统设计[J].液压气动与密封, 2011，31（3）：45-47.

Sun Y T，Guo G S. The design of hydraulic press based on servo control systerm[J]. Hydraulic Pneumatics & Seals，2011，31（3）：45-47.

[3]王占林.液压伺服控制[M].北京：北京航空学院出版社，1987.

Wang Z L. Hydraulic Servo Control System[M].Beijing: Beihang University Press, 1987.

[4]田源道.电液伺服阀技术[M].北京：机械工业出版社，2008.

Tian Y D. Electric-hydraulic Servo Valve[M]. Beijing：China Machine Press, 2008.

[5]成大先. 机械设计手册[M].北京：化学工业出版社，2002.

Cheng D X . Mechanical Design Manual[M]. Beijing：Chemical Industry Press, 2002.

Service：

【This site has not yet opened Download Service】【Add Favorite】