Tensioning type micro-bending forming method and device

Abstract

The invention relates to a tension-type micro-bending forming method and a forming device, which belong to the field of micro-plastic forming. A metal wire is tensed on a male die support, the tensed metal wire is used as a male die for micro-bending forming, so as to constitute a tension-type male die component together with the male die support; the forming device further utilizes a CCD camera head mounted on the male die support to observe the position relationship of the metal wire and a female die, the alignment of the metal wire and the female die is realized by adjusting a two-dimensional mobile station, the positioning of a workpiece is carried out by a positioning block mounted on a female die, a stepping motor is used as a power source to drive a screw rod and drive a sliding panel to move along a square guide track, thus allowing the tension type male die component which is connected with the sliding panel to move up and down and further realizing the micro-bending forming of the workpiece on the female die by the tensed metal wire. The forming device uses the tensed metal wire as the male die for micro-bending forming, which is simple, convenient and can greatly reducethe difficulty of manufacturing the micro-bending male die with great practicality. The device has reasonable design, simple technology and good controllability, thereby being applicable to industrial production.

Description

technical field [0001] The invention relates to the technical field of micro-plastic forming, in particular to a method and device for micro-bending forming based on a tensioned punch, which improves the micro-bending punch that is difficult to manufacture by conventional methods, and facilitates the micro-bending of sheets that frequently change the width of the punch Forming is mainly suitable for micro-bending forming of ultra-thin metal sheets, which is conducive to low-cost mass production of micro-bending devices. Background technique [0002] With the continuous advancement of science and technology, the demand for miniature products has grown rapidly, and miniaturization has attracted more and more attention. It has become an important direction of contemporary scientific development. Miniaturized products are widely used in automation, medical and health, aerospace, telecommunications Many fields such as electronics, precision instruments and national defense have b...

AI Technical Summary

Problems solved by technology

In the field of micro-plastic forming, Edward G Wenskis of the United States designed a forming device for micro-stretching. The patent number is US6983685. This device is only used for micro-tensile testing and is difficult to achieve mass production.

Chinese patent 03132554.8 reports a precision micro-plastic forming system developed by Harbin Institute of Technology. Its principle is to use piezoelectric ceramics as a driver to press and form, but it does not refine micro-bending forming.

Chinese patent 200510022725.1 reports a superplastic extrusion molding device for micro-miniature parts from Northwestern Polytechnical University, but it is only designed for superplastic materials, and its practical range is limited

[0006]1. The laser heating micro-bending forming purely using the temperature gradient effect of the material has poor controllability of the bending degree, and can only form miniature parts of simple shapes, and the forming workpiece The accuracy is not high

[0007]2. Electrochemical methods can only form microdevices with relatively simple structures. The forming cycle is long and the cost is high, so it is not suitable for mass production

[0008]3. Superplastic micro-forming has special requirements for the materials of micro-devices, which requires the material to have superplasticity, and the application range is small

[0009]4. At present, the traditional manufacturing method for micro-bending molds has relatively low manufacturing accuracy, and it is difficult to meet the quality requirements of micro-bending parts

[0010]5. It is difficult and expensive to manufacture the microbending punch with traditional manufacturing methods

[0011]6. The micro-bending punch manufactured by the traditional method has insufficient rigidity and poor performance

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