Design of an electro-hydraulic CNC press brake

被引：7
|
作者：
Altintas, Y
Lane, AJ
机构：
[1] Department of Mechanical Engineering, University of British Columbia, Vancouver
来源：
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 1997年 / 37卷 / 01期
关键词：
D O I：
10.1016/0890-6955(95)00112-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Design principles of computer controlled hydraulic press brake system is presented. A press brake is retrofitted with a pair of electrohydraulic actuators. The electrohydraulic system consists of a variable displacement pump, a pressure accumulator, two servo valves and two asymmetrical piston-cylinder type actuators holding the press ram. Basic modelling and identification of the electrohydraulic drive system dynamics is given for each actuator. The design and implementation of a digital pole placement control algorithm for a CNC system is presented. The position accuracy of the press is maintained within the resolution of the encoder unit. From a series of sheet metal bending rests, the compliances of each actuator and their influence on the bending precision are predicted. Copyright (C) 1996 Elsevier Science Ltd.
引用
收藏
页码：45 / 59
页数：15
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