Thin plate wrinkle-free forming die and forming method using low melting point alloy

Abstract

The invention discloses a sheet allowance-free crease-resisting forming die and method using low-melting-point alloy, relates to a three-dimensional curved plate forming device, and belongs to the field of mechanical engineering. The crease-resisting forming die adopts low-melting-point alloy as a pressing crease-resisting medium. In the plate forming process, low-melting-point alloy at concave and convex dies keeps full-area contact with plates and applies edge pressing force to the plates, low-melting-point alloy relatively flow under pressure of the convex die, however always keeping contact with the plate surface, and the plate profile is constantly and continuously changed. The sheet allowance-free crease-resisting forming die using low-melting-point alloy can effectively restrain thecrease phenomenon in the plate forming process, achieves the effect of plate forming allowance-free machining, greatly improves the raw material utilization rate, reduces contour finishing work afterforming, has the advantage of flexible forming and can be applied to forming plate curved faces with different shapes and sizes.

Description

technical field [0001] The utility model relates to a non-surplus anti-wrinkle forming die for a thin plate using a low-melting point alloy, which relates to a three-dimensional curved plate forming device and belongs to the field of mechanical engineering. Background technique [0002] Sheet forming technology is widely used in aerospace, automotive, electronics and other manufacturing fields, and plays an important role in the manufacturing industry. When the three-dimensional surface of the plate is formed by a mold, it is often necessary to use a blanking device to press the edge of the plate to prevent wrinkling during the forming process of the plate. The structure and shape of the blank holder correspond to the shape and size of the workpiece, which significantly increases the workload of mold design and manufacturing; if the design is unreasonable, defects such as wrinkling, transitional thinning and even cracking will occur during the sheet forming process . In ad...

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Problems solved by technology

[0004] The purpose of the present invention is to utilize the characteristics of low-melting point alloys to effectively prevent defects such as wrinkling, transitional thinning and even cracking in the existing sheet forming dies during the sheet forming process, and to provide a non-residual anti-slip sheet using low-melting point alloys. Wrinkle forming mold and forming method

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