Sheet micro-forming method and device

A micro-forming and thin-plate technology, applied in the field of micro-forming, can solve the problems of not involving the replication of micro-features, the internal pressure is not easy to control, and the production cost is increased, so as to achieve low-cost mass production, saving processes, and simple tooling and molds. Effect

Inactive Publication Date: 2014-05-14
JIANGSU UNIV
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Problems solved by technology

For example, the patent CN2510196Y discloses a metal sheet hydroforming die device, which is suitable for the net shape production of complex thin sheet parts such as body panels of small batches and multiple models, and is also suitable for the net shape production of metal sheet parts, but the forming process requires convex Dies and dies increase production costs; patent CN1817501A discloses a hydroforming device and a hydroforming method, which can form thin plates into complex shapes and can effectively prevent wrinkles; patent CN102083565A proposes a hydroforming processing method and hydroforming processed products , the purpose is to hydraulically process the hydroformed product with a long expansion area without remaining buckling and wrinkles, and make the internal pressure reach a certain pressure value through three processes, so as to obtain the finished product. The process is relatively complicated, and the internal

Method used

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  • Sheet micro-forming method and device

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Embodiment

[0024] Such as figure 1 Shown, a kind of thin plate microforming method comprises the following steps:

[0025] Step 1: The computer 13 pumps the upper cavity of the micro-mold 8 and the pit of the micro-mold 8 into a vacuum state by controlling the air extraction device 12;

[0026] Step 2: The computer 13 discharges the electromagnetic coil 16 by adjusting the controller 14, and the electromagnetic force generated after the discharge drives the metal plate 2, and drives the elastic medium 4 above the metal plate 2 to move upward together;

[0027] Step 3: an incompressible liquid medium 4 is sealed above the elastic medium 4, the upwardly moving elastic medium 3 squeezes the liquid medium 4, and the workpiece 7 is squeezed between the liquid medium 4 and the micro-mold 8, causing the workpiece 7 to undergo plastic deformation, Cooperating with the micro-mold 8, the shape of the micro-mold 8 can be copied to realize the rapid and precise forming of the workpiece 7;

[0028] St

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Abstract

The invention relates to a sheet micro-forming method and device and applies to the technical field of micro-forming of plates. The method includes: controlling an evacuating device to evacuate an upper cavity and a hole in a micro-die by a computer; controlling an electromagnetic coil to discharge by a controller; allowing electromagnetic force from discharging to drive a metal plate to drive an elastic medium above to move up; allowing the elastic medium moving up to squeeze a liquid medium which is incompressible and which is hermetically arranged above the elastic medium; allowing a workpiece to plastically deform when stressed between the liquid medium and the micro-die, so as to reproduce the shape of the micro-die; allowing the elastic medium to bounce back to drive the metal plate to its original place. The workpiece can be multiply repeatedly machined into shapes by changing the workpiece. The invention further discloses the sheet micro-forming device. The sheet micro-forming method and device is high in forming efficiency, good in forming quality and applicable to low-cost batch production of micro devices.

Description

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Claims

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Application Information

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Owner JIANGSU UNIV
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