Some knowledge points about forging machines
Release time:
2021-06-04
Hot forging machines are used in the manufacturing of a large number of ferrous and non-ferrous metal forgings for automobiles, tractors, internal combustion engines, ships, aviation, mining machinery, petroleum machinery, hardware tools, etc., for die forging and finishing. Forged forgings have advantages such as high precision, high material utilization rate, high productivity, ease of automation, low requirements for worker skills, low noise and vibration, etc. Therefore, they are widely used in modern forging production.
Features of hot forging machines: high production efficiency, simple operation, easy maintenance, suitable for automated forging production lines. Hot forging machines have fast stamping speed, short hot contact time, and long mold life. The design using upper and lower ejectors reduces the draft angle and saves forging materials. High anti-tilt rate, high guide rail precision, and good forging quality.
A programmable logic controller (PLC) control system and multiple safety operating circuits are used to ensure operator safety. Operating windows are provided on both sides of the machine body for easy transfer of forgings. A special demolding device allows for quick and easy demolding. A reliable centralized lubrication system and a manual supplementary lubrication system effectively reduce friction loss.
Uses of hot forging machines: Widely used in forging parts for automobiles, trains, ships, aviation, mining machinery, petroleum machinery, hardware tools, etc., they are indispensable high-precision forging equipment for modern forging producers.
The structural features of the hot forging machine are: the slider has an additional guide rail like an elephant's trunk, and the closing height uses a wedge-shaped worktable. The machine body is an integral structure, pre-tightened by four tensioning bolts to improve the stress state of the columns; to improve the guiding precision and load-bearing capacity of the slider, the guiding surface of the slider consists of the main rail and the trunk guide rail; an upper ejection device is installed inside the slider; the eccentric shaft is installed parallel to the front of the press, and the connecting rod is supported by two points; the clutch and brake use a disc structure; the lower ejection device ejects the forging from the mold through a cam lever structure.
This structure is an earlier structure adopted by hot die forging presses. In order to meet the working characteristics and reliability requirements of the die forging production team press, the structural improvements of traditional hot forging presses over the years mainly include: the use of a wedge-shaped worktable, which improves the flexibility of adjustment and avoids erosion by scale on the worktable; the use of hydraulic pre-tightening nuts can alleviate the problem of sticking during die forging; the use of a double-support wide connecting rod structure improves the rigidity and eccentric load-bearing capacity of the hot forging machine; the addition of an eccentric shaft balancing device improves the operational stability of the press and improves the stress state of the bearing; the addition of a flywheel brake, a stepless adjustment mechanism, a quick mold change device, and a silencer to reduce stamping noise, etc. The clutch and brake, pusher, belt drive, and lubrication system have been improved.
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Suitable applications for small hydraulic presses include: 1. Punching various silicone and plastic buttons for mobile phones or remote controls, and cutting plastic products; 2. Cutting various protective films for mobile phones, digital cameras, and laptop LCD screens, as well as precision cutting and halving of various pressure-sensitive adhesives and trademarks; 3. Embossing, forming, etc., of various PV, PE, PC and other thin-film switches and panels; 4. Pressing and forming various flexible circuit lines for laptop keyboards, etc. Small hydraulic presses use original Taiwanese or Japanese parts for the hydraulic power system, resulting in fewer malfunctions, high efficiency, low noise, low horsepower requirements, easy maintenance, and convenient adjustment of output, speed, and stroke.
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Technology Daily (Reporter Shi Junbin, Correspondent Jiao Yue) Recently, a 19,500-ton free forging hydraulic press and a 300-ton/750-ton-meter full hydraulic forging manipulator, independently developed by China Heavy Industry Corporation, successfully completed their first hot load test run in Jiangyin, Jiangsu Province. This marks the completion of the world's largest tonnage free forging hydraulic press and the world's largest clamping force/clamping torque full hydraulic forging manipulator currently in operation, achieving a globally advanced level of overall equipment installation. The 19,500-ton free forging hydraulic press adopts a three-beam, four-column, three-cylinder, top-drive, press-insert, full pre-stressed frame structure. Both the upper and lower beams use pre-stressed composite beams. The maximum forging capacity can reach 4
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