Crank arm press uses crank arm to transmit force, which is characterized by fast running speed, high working efficiency, fixed and adjustable working stroke, and overload operation is strictly prohibited. Generally used for blanking, punching and drawing.
Friction press uses the wheel disc to drive the friction wheel to transmit force through the inertia rotating screw, which is characterized by high transmission pressure and moderate working efficiency without being limited by the effective working range of the screw. The operation is not easy to control. Generally used for material correction; Simple shape; Die casting, cavity forming, etc. Double-acting press is mainly used for stretch forming, and the force is directly transmitted through the screw.
Machinery press1; Fast running speed, high efficiency, low cost, simple control part and easy maintenance; The workbench is small in size. In order to increase its power transmission, it is generally equipped with a counterweight (flywheel), which is bulky, noisy and vibrating during operation.
Second, the hydraulic press is the pressurized liquid generated by the hydraulic pump to transmit power through the hydraulic actuator of the control loop, and the liquid mesons include water and emulsion; Hydraulic oil. It is characterized by high working pressure, stable operation, wide range of free control and adjustment of working stroke, large working space, moderate working efficiency and wide application range. The configuration of hydraulic press is complicated. Generally, slightly larger presses are equipped with independent pumping stations, and the control parts and circuits are complicated, so the cost is relatively high.