The history and development status of hydraulic presses(1)

The development of hydraulic presses is well known in the world and has been patented for more than 200 years since 1795, when Bramah in England invented the first hand type hydraulic press.

The hydraulic press is mainly composed of a frame, hydraulic system, cooling system, pressurizing cylinder, upper die and lower die, the pressurizing cylinder is mounted on the upper end of the frame and connected to the upper die, the cooling system is connected to the upper and lower die.

Its characteristic is that the lower end of the frame is equipped with a mobile table and mobile oil cylinder connected with the mobile table, the lower die is placed on top of the mobile table. CNC shearing machine with digital, text and symbols composed of digital instructions to achieve a shearing machine or multiple shearing machine equipment action control technology. CNC shearing machine is generally a general-purpose or special computer to achieve digital program control, it is usually controlled by the position, angle, speed and other mechanical quantities and mechanical energy flow related to the flow of switching quantities.

Hydraulic bending machine includes bracket, table and clamping plate, the table is placed on the bracket, the table consists of base and pressure plate, the base is connected to the clamping plate through the hinge, the base consists of seat shell, coil and cover plate, the coil is placed in the recess of the seat shell, the top of the recess is covered with a cover plate.

However, in China, the development of the hydraulic press industry has only been about 50 years. before 1949, China was a semi-feudal and semi-colonial country, bullied by large countries, no independent industrial system of its own, no hydraulic press manufacturing. since 1949, the first three years for the first five-year plan, the first five-year plan was implemented in 1952, China quickly established an independent complete industrial system.

In the process of gradual design and manufacturing, can design and manufacture domestic automobiles and locomotives. ships, power plants, steel smelters, aircraft, rockets, and even sophisticated aerospace equipment. All these greatly contributed to the rapid development of various hydraulic presses.

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