According to the design, the crank press can be divided into the following parts: body parts, transmission parts, clutch parts, slide parts, balance cylinder parts, air cushion parts, control parts, lubrication parts, air circuits components, circuit components, etc. (Complex closed presses also have moving parts). The fuselage is the main load-bearing part of the press. The general fuselage of small tonnage is a whole, while the closed press is divided into beams, columns, base and other parts. Transmission is to convert the electrical energy of the motor into mechanical energy of up and down reciprocating motion through the flywheel and gear transmission pair. The clutch component transmits power to the flywheel or gear pair through the clutch. There are two types: mechanical clutch and pneumatic (hydraulic) dynamic friction clutch. The balance cylinder component uses compressed air entering the balance cylinder to generate upward force, which overcomes the inertia generated when the slider is running, making the operation more balanced. Air cushion components (not standard components) are generally used for edge pressing or material removal during stretching. The operating component (a special component of the mechanical clutch press) controls the clutch action and stop through the electromagnet (or pull-down cylinder). Lubricating components, the lubricating oil is pumped to each moving pair through the lubrication pump and oil circuit to form lubrication. The air circuit components enter the corresponding air storage tank from the compressed air, and can enter the clutch, air cushion and other air-consuming parts through the control valve. Circuit components, the electronic control system of the press, control the pressure motor and corresponding actions, clutch and other functions.