Infra-red heating tinsel plate pneumatic forming method and apparatus

Abstract

The invention relates to an air pressure forming method of an infrared heating metal foil plate and a device; wherein, the method includes the steps of accurately heating a metal foil plate with an infrared heat source, applying pressure to the softened metal foil plate with high pressure gas and realizing the precise forming of the metal foil plate by matching a micro mold; the device consists of a bottom plate, an upper pressure plate, a micro mold, a gas pressure nozzle, a three-dimensional mobile platform, a three-dimensional mobile platform controller, an air compressor, a computer, a drive, an infrared radiation thermometer, a three-dimensional worktable and an infrared focusing heating device. The method and the device integrates the technologies of infrared heating, infrared temperature measurement and air pressure forming to a micro-forming process, thus improving the forming performance of the metal foil plate, ensuring the quality of the surfaces of work pieces; the high pressure gas is used for replacing a male mold, thus simplifying the technique, causing the loading pressure to be more even and strengthening the filling ability; the method and the device can realize the low cost and mass production of the metal foil plate by combining an array female mold.

Description

technical field [0001] The invention relates to the field of micro-forming, in particular to a method and device for air-pressure forming of metal foil plates by infrared heating, which is suitable for rapid forming of metal foil plates, combined with infrared heating and air-pressure forming technology, and is especially suitable for micro-forming of metal foil plates with low forming ability. take shape. Background technique [0002] With the rapid development of industrial technology, micro-devices are more and more widely used in aerospace, precision instruments, biomedical and other fields, and the demand for micro-parts of various materials is increasing. At the same time, the processing technology of micro-devices, Processing costs and batches, etc. also put forward new requirements. The existing MEMS-oriented micromachining technology and technology are developed on the basis of integrated circuits, mainly relying on LIGA, photolithography, etching and other micro-p...

AI Technical Summary

Problems solved by technology

[0004] However, there are still some problems in the current micro-plastic forming. Because the deformation resistance of micro-cold extrusion is large, and it is greatly affected by the type of material, grain size and orientation, the deformation of micro-cold extrusion, uneven mold filling, and uneven process parameters are caused. Stablize

Therefore, researchers are actively looking for a new plastic forming process to solve the problem of poor forming ability. For example, the patent No. ZL200510047029.6 proposes a method for hydraulic or pneumatic forming of sheet metal, which can obtain uniform filling pressure, but does not involve foil Micro-forming of plates; the patent publication number CN1903473 proposes a warm forming method, although the forming ability can be improved, but the punch needs to be heated, which increases the complexity of the process; the patent publication number CN2774673 proposes the use of warm hydraulic pressure Forming method, but it has high requirements on the sealing of the mold, and is also not suitable for micro-forming; the US Patent No. 5419170 proposes a device based on air pressure forming, which can accurately control the gas pressure, but it is not suitable for sheet metal forming. no help

[0005] It can be seen from the above that people have begun to apply air pressure forming to plastic forming, but it is rarely used in micro forming.

The same warm forming technology has also begun to be applied to plastic forming, but there are complex processes and uneven forming

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