Hydrodynamic deep drawing equipment for forming deep cavity parts

Abstract

The invention relates to hydrodynamic deep drawing equipment for forming deep cavity parts, which is capable of deep drawing the deep cavity parts with complicated shapes such as necking-type parts with negative draft angles. The equipment is formed by three parts, i.e. a host machine, a hydraulic control system and an automatic control system of a computer. The host machine is a hydraulic machine with three beams and four columns; the hydraulic control system provides motion power to the host machine and mainly comprises two main loops, i.e. a side pressing control loop and a charging chamber control loop; and the automatic control system of the computer is used for collecting data of a displacement sensor and a pressure sensor in real time, accurately controlling and recording formed parameters, and also accurately controlling pressure according to a set curve. The equipment provided by the invention can be used for forming the parts which cannot be formed by a traditional forming process or can be formed only by a plurality of processes; has the advantages of high forming accuracy, good surface quality of the parts, high die fitting degree and the like; and has the characteristics of simplicity and convenience in operation, high control accuracy, high universality, high automation degree and the like.

Description

technical field [0001] The invention relates to a sheet material liquid-filled deep drawing forming equipment, in particular to a liquid-filled deep drawing forming hydraulic machine for deep cavity complex parts, which belongs to the special technical equipment for sheet material liquid-filled deep drawing forming. Background technique [0002] In manufacturing industries such as aviation, aerospace, automobiles, and electrical appliances, some complex sheet metal parts are often encountered, especially those with complex shapes, large surface changes, and deep drop pressure parts. The falling pressure process is a traditional method for forming complex sheet metal parts in the sheet metal process. Due to the large noise pollution in the forming process of this process, the manual trimming workload is large, the forming quality is not easy to control, and the surface and internal damage of the formed parts are serious. It cannot meet the forming requirements of such parts. ...

AI Technical Summary

Problems solved by technology

The falling pressure process is a traditional method for forming complex sheet metal parts in the sheet metal process. Due to the large noise pollution in the forming process of this process, the manual trimming workload is large, the forming quality is not easy to control, and the surface and internal damage of the formed parts are serious. It cannot meet the forming requirements of such parts. A considerable part of the complex sheet metal parts formed by the drop pressure process can be formed by the rubber bag hydraulic method. However, there are still quite a few sheet metal parts with very complicated shapes and structures such as negative pull Necked parts with a mold angle and a deep drop, due to the deformation of the rubber bag itself and the sealing requirements under high pressure, such parts cannot be formed by a high-pressure rubber bag hydraulic press, even if the size of individual parts is within the allowable range of the forming limit of the equipment , and no one dares to make a bold attempt at the cost of losing the service life of the rubber bag. At present, the only way to solve this kind of process problem is to divide the parts and change the design.

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