Plate multipoint divisional forming method and divisional pressing type multipoint forming device

Abstract

The invention discloses a plate multipoint divisional forming method and a divisional pressing type multipoint forming device, and belongs to the technical field of mechanical engineering. The plate multipoint divisional forming method and the divisional pressing type multipoint forming device aim to change the current situation that a blank pressing mechanism and a trimming process are needed when a plate is formed by utilizing an integer mould, overcome the detect that a workpiece is prone to wrinkling or the material utilization rate is low when the plate is formed by utilizing a multipointtype digitized mould, and has an anti-wrinkling function. The upper portion and the lower portion of the multipoint forming device are each composed of a plurality of basic body units, the upper portion or the lower portion of the multipoint forming device is divided into a plurality of forming areas, and the multiple basic body units are arranged on the multiple forming areas correspondingly; and when the plate is formed, the multiple forming areas are divided into two sets or a plurality of sets, each set comprises one or more forming areas, and the formed plate is pressed step by step in sets. According to the plate multipoint divisional forming method and the divisional pressing type multipoint forming device, compared with integer mould forming, mould-free forming without blank pressing of the plate three-dimensional curved surface can be achieved, and the processes of designing, manufacturing, debugging and workpiece outline cutting after plate forming of the mould are saved.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering. Background technique [0002] At present, the three-dimensional surface forming of plates is mainly realized by integral mold or multi-point digital mold. When forming a thin plate or a three-dimensional curved surface with a complex shape, an edge-holding mechanism is generally required to prevent wrinkling; this leads to a complex mold structure, reduces the utilization rate of the plate, and requires an additional trimming process after forming. In this way, one or more sets of molds are often required to form a workpiece using an integral mold, which increases the cost of mold making and the time for mold adjustment. If you use a multi-point digital mold, although you can use many height-adjustable basic units to flexibly change the shape of the forming surface, realize the multi-purpose function of one mold, and reduce the cost of mold making; however, the problem of wrinklin...

AI Technical Summary

Problems solved by technology

If a multi-point digital mold is used, although many height-adjustable basic body units can be used to flexibly change the shape of the forming surface, the function of one mold with multiple functions can be realized, and the cost of mold making can be reduced; however, the problem of wrinkling of the workpiece needs to be solved

The invention patent titled "Plate Multi-point Forming Device" (Chinese Patent No.: ZL02109866.2) is equipped with a blank holder around the upper and lower basic body groups, and uses multiple hydraulic cylinders to exert pressure on the blank holder to solve the problem of flexibility. Blindfolding problem; however, the trimming process after forming is still required, and when forming small-sized workpieces, it is necessary to use a plate that is much larger than the actual workpiece size to achieve blanking forming

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