Precise and efficient hot die forging press

Abstract

The invention relates to the field of high-end equipment manufacturing industry, in particular to a precise and efficient hot die forging press. The precise and efficient hot die forging press comprises a rack, wherein a forging extrusion force heavy load regulation and control device, a pressure pin unloading device, a crankshaft bearing bush temperature control device, a sliding block guide rail temperature control device, a ball head temperature control device and a clutch temperature control device which are connected with a control system are arranged on the rack respectively. The forging extrusion force heavy load regulation and control device can automatically and accurately regulate and control the magnitude of forging extrusion force under the heavy load condition, and the pressure pin unloading device can float a pressure pin upwards, so that the rotating torque and resistance in the transmission link are reduced; the crankshaft bearing bush temperature control device is adopted for accurately controlling the temperature of a bearing bush, and meanwhile efficient sealing thin oil lubrication is conducted; the clutch temperature control device is adopted to realize accurate and efficient temperature control of a clutch; and the sliding block guide rail temperature control device and the ball head temperature control device are adopted for conducting cold air temperature control on a friction pair, so that the transmission precision, efficiency and reliability of equipment and the product quality are effectively improved, and intelligent operation and maintenance and automatic control wiring are achieved.

Description

Technical field: [0001] The invention relates to the technical field of high-end equipment manufacturing industry, in particular to a precision and high-efficiency hot die forging press. Background technique: [0002] Hot die forging presses are widely used in precision forging processing of parts in automobiles, high-speed rail, ships, aviation, mining machinery, petroleum machinery, and other industries. They are indispensable high-precision die forging equipment for modern forging producers. [0003] Although the working principle and structural design of the hot die forging press are relatively mature, there are still some prominent and deep-seated technical problems in practical application. For example, the lever-type lower ejector device is used in the existing hot die forging press. This structure has good synchronization, symmetrical balance, large ejection force (3-5 times higher than the traditional technology), simple structure, compactness, and mechanical effici...

AI Technical Summary

Problems solved by technology

However, there are two prominent problems in the practical application of the lever-type bottom jacking device: one is that the lever-type mechanical bottom jacking device is installed in the pit below the equipment foundation. When it is necessary to adjust the forging force, it is necessary to adjust the lever fulcrum seat When adjusting the position on the lever, the operator needs to dismantle the foundation protection cover to enter the pit to work. The weight of the parts of the lifting device under the lever-type mechanical lowering device is several tons, and the space in the pit is very narrow, and lifting equipment cannot be used. The operator has to look up to disassemble and assemble parts, and calculate and measure to determine the moving position of the lever fulcrum seat. It also needs to go through repeated debugging and verification for a long time. Therefore, it is difficult to complete the adjustment of the forging force manually and the adjustment accuracy cannot be achieved. Guarantee, in addition, with the popularization and application of automatic connection and intelligent control technology in the metal forming equipment industry, and the complex changes in the processing technology of special-shaped precision forgings, it is indeed necessary to adjust the forging force frequently and automatically, and it cannot meet the needs of multi-station molds. Requirements for jacking force (more than 5 times higher than traditional technology) under heavy forging load

Therefore, there is an urgent need to develop a special technical solution to solve the difficult, inaccurate, low-efficiency, insufficient jacking force under heavy load, poor stability, and the inability to meet the needs of automation and intelligence. Deep-seated technical problems in metal forming control of chemical production line and special special-shaped precision die forging

The second is that the height adjustment of the existing lever-type mechanical lower ejector device adopts the structural form of an adjusting nut and a lock nut. Although this structure can also realize the adjustment and locking of the height of the mold, there are outstanding problems in practical applications. The technical problem is that when adjusting the die height of the hot die forging press, it is necessary to repeatedly disassemble the adjusting nut and lock nut for adjustment. Repeated disassembly and assembly during the adjustment process will cause rapid wear of the thread. After a long period of use Serious thread wear causes the threaded connection to loosen under the impact of heavy loads, and the reliability of the threaded connection gradually decreases, which eventually leads to an increase in the scrap rate of processed parts, or even failure of normal production, requiring shutdown for maintenance

[0005] For another example, the crankshaft bush in the existing hot die forging press is poorly lubricated and causes technical problems of temperature rise (such as Figure 67 As shown in the existing crankshaft bearing bush lubrication structure), the clutch cooling is not timely and the cooling efficiency is low (such as Figure 70 Existing clutch lubricating structure shown), slider reciprocating motion and ball head screw relative rotation in ball head seat (such as Figure 68 , 69 (shown) produces a large amount, which makes the gap between each sliding friction pair smaller, restricts the improvement of precision, and will also lead to changes in the overall forging precision of the hot die forging press, thus having a greater impact on the quality of forged products

[0006] The existence of the above technical problems has seriously restricted the development of high-speed, precision hot forging presses and their automated production lines

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