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气动摩擦离合器、制动器是大型曲柄压力机的一个重要部件。目前国产大型压力机离合器、制动器动作时间的协调关系主要是靠电磁气阀的联锁来实现,然而二个电磁气阀的动作不等于离合器、制动器的动作,因为弹簧力、气缸径、气路管径等,对动作时间都有影响。现以J38—3500压力机为例进行电测,该机离合器活塞面积为12091厘米~2,弹簧力43000公
Pneumatic friction clutches and brakes are an important part of a large crank press. At present, the coordination relationship between domestic large press clutches and brake actuation time is mainly realized by the interlocking of electromagnetic gas valves. However, the action of two electromagnetic gas valves does not equal the action of clutches and brakes. Because spring force, cylinder diameter, gas path Diameter, etc., have an impact on the action time. Now J38-3500 press for example for electrical measurements, the clutch piston area of 12091 cm ~ 2, the spring force of 43,000