Metal mold-free hydraulic pressure forming method

Abstract

The invention discloses a metal mold-free hydraulic pressure forming method. The metal mold-free hydraulic pressure forming method structurally comprises a sphere symmetry plane. A barrel body, a frustum body I, a sealing cover I, a frustum body II and a sealing cover II are arranged in the sphere symmetry plane. The barrel body is located in the middle of the inside of the sphere symmetry plane,the frustum body I is movably connected to the upper surface of the barrel body, and the sealing cover I is movably connected to the top of the frustum body I. The frustum body II is movably connectedto the lower surface of the barrel body, and the sealing cover II is movably connected to the bottom of the frustum body II. The metal mold-free hydraulic pressure forming method is applicable to anysize, a mold is not required, hydraulic equipment is not required, one-time forming is achieved, the subsequent splicing is not required, the manufactured spherical ball is balanced in stress, the precision of the ball is high, and lines of other sealing bodies are smooth, and the grinding and polishing efficiency is greatly improved; and forming is achieved after welding, and the deformation problem caused by welding is not required to be treated.

Description

technical field [0001] The invention relates to the technical field of metal forming, in particular to a metal moldless hydraulic forming method. Background technique [0002] At present, there are still some deficiencies in the existing metal forming methods. For example, a set of molds in the existing metal forming methods can only correspond to a single-size product. For example, a ball with a diameter of 500mm and a thickness of 1mm needs a set of 500mm , a mold with a thickness of 1mm, this mold cannot be used to make a ball with a diameter of 500mm and a thickness of 1.5mm; the requirements for the equipment are very high, and the appropriate pressure machine needs to be selected according to the size of the product. The pressure is not enough, the metal is not stretched enough, and the shape is wrong. , the pressure is too high, the raw material will tear; the internal stress of the manufactured product is uneven, for example: the ball made by this method, cut a part,...

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Problems solved by technology

[0002] At present, there are still some deficiencies in the existing metal forming methods. For example, a set of molds in the existing metal forming methods can only correspond to a single-size product. For example, a ball with a diameter of 500mm and a thickness of 1mm needs a set of 500mm , a mold with a thickness of 1mm, this mold cannot be used to make a ball with a diameter of 500mm and a thickness of 1.5mm; the requirements for the equipment are very high, and the appropriate pressure machine needs to be selected according to the size of the product. The pressure is not enough, the metal is not stretched enough, and the shape is wrong. , the pressure is too high, the raw material will tear; the internal stress of the manufactured product is uneven, for example: the ball made by this method, cut a part, after separation, the ball will be deformed; and there are requirements for the thickness of the material, such as : 500mm diameter ball, 1mm thick metal plate can be made, 2000mm diameter ball, must be more than 4mm thick material; the post-assembly workload is heavy and difficult, and the metal product will be deformed during the high-temperature welding forming process, which will affect the appearance even function

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