Working Principle of the Electric Screw Press

The core principle of the electric screw press is based on motor drive, screw transmission, and kinetic energy storage and release. It converts the rotary motion of a motor into the linear reciprocating motion of the slide block, enabling precise control of striking energy and pressure to perform forging, forming and other processing operations on workpieces. It is an energy-saving and high-precision forging equipment.

I. Core Structural Components

The equipment is mainly composed of a frame, servo motor, reduction gear, screw pair (screw and nut), slide block, braking mechanism, balance cylinder, control system, etc.. Among these components, the screw pair and slide block serve as the key parts for motion conversion.

II. Working Process

1. Energy Storage Stage

The motor starts rotating forward and drives the screw to rotate at a high speed through the reduction gear. The nut engages with the slide block via threads, converting the rotary motion into the linear upward movement of the slide block. At the same time, the motor accelerates to a preset speed, converting electrical energy into kinetic energy for storage to reserve energy for the striking process.

2. Striking Stage

Once the motor reaches the set speed and stops accelerating, the stored kinetic energy is instantly released through the screw pair, driving the slide block to move downward at a high speed. The slide block then applies an impact force or pressure to the workpiece placed on the worktable to complete processing procedures such as forging and forming.

3. Reset Stage

After the striking operation, the motor rotates reversely to drive the screw to rotate in the reverse direction. Under the action of screw transmission, the slide block moves upward to reset and return to the initial position, preparing for the next processing cycle. Some models are equipped with a braking mechanism to quickly lock the slide block and ensure equipment safety.

4. Pressure Holding Stage (Optional)

For processes such as fine pressing and shaping, the equipment can control the slide block to maintain a constant pressure via the control system, realizing pressure-holding forming and improving the accuracy of workpieces.

III. Core Working Logic

In essence, it involves the precise conversion and control of energy: the motor provides power, the screw pair accomplishes the conversion of motion forms, and the stored and released kinetic energy directly determines the striking force and energy. The electronic control system regulates the motor speed and direction in real time to achieve stepless adjustment of striking energy and pressure. Compared with the friction energy storage mode of traditional friction screw presses, this design features lower energy consumption and higher precision.

IV. Main Features

1. Precise Controllability: Stepless adjustment of striking energy and pressure is supported to meet the processing requirements of workpieces with different specifications, ensuring high forming accuracy.

2. Energy-Saving and Efficient: Driven by a motor directly or through a reduction gear, the equipment eliminates friction energy loss and reduces energy consumption by over 30% compared with traditional equipment.

3. Safe and Stable: Equipped with multiple braking and protection devices, it features accurate slide block positioning, low operating noise and a low failure rate.

4. Strong Adaptability: It can be applied to various processes including forging, fine pressing, shaping and powder metallurgy pressing.

V. Application Fields

Widely used in industries such as automotive parts, mechanical manufacturing, hardware processing and powder metallurgy, it is suitable for precision forming and processing of metal workpieces like gears, shafts, flanges and forgings.