The press is a working mechanism driven by the motor through the transmission mechanism to apply processing force to the workpiece. The transmission mechanism is a belt driven and gear driven reduction mechanism; The working mechanism is divided into screw mechanism, crank connecting rod mechanism and hydraulic cylinder.
Presses are divided into screw presses, crank presses and hydraulic presses. Crank press is also called mechanical press.
The screw press has no fixed bottom dead center. For large die forgings, it can be formed by multiple blows, and can perform single play, continuous play and inching. The striking force is related to the deformation of the workpiece. When the deformation is large, the striking force is small, and when the deformation is small (such as cold striking), the striking force is large. In these respects, it is similar to a forging hammer. However, its striking force is closed by the frame, so it works smoothly, and its vibration is much smaller than that of the forging hammer, so it does not need a large foundation.
The lower part of the press is equipped with a forging ejection device. The screw press has the functions of die forging hammer, mechanical press and other forging machines. It is versatile and can be used for die forging, blanking, deep drawing and other processes. In addition, the screw press is widely used because of its simple structure and easy manufacture.
