Composite forming device and method for heterogeneous laminated plates with electric current and friction assisted heating

Abstract

The invention relates to a device and method for composite forming of heterogeneous laminated plates with electric current and friction auxiliary heating, and belongs to the technical field of mechanical manufacturing and processing. The device includes a first tool head assembly in rotational contact with the first metal plate, a second tool head assembly in rotational contact with the second metal plate, and an adjustable time-varying power supply. The adjustable time-varying power supply is respectively connected to the first tool head assembly, The second tool head assembly is electrically connected to the end of the heterogeneous laminated board. During forming, the active tool head is in pressure contact with the sheet and rotates at a high speed, and the connection of two heterogeneous metal sheets and the progressive synchronous composite forming are completed through frictional heat generation and current-assisted heating. Compared with the prior art, the forming device and the forming method in the present invention have the advantages of high processing efficiency, energy saving, improved surface quality and contour accuracy of parts, and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing and processing, and relates to a solid-state connection and plastic forming technology of heterogeneous metal sheets, in particular to a composite forming method of two-point progressive and synchronous connection of heterogeneous laminates heated by current and friction assistance and its corresponding device. Background technique [0002] Sheet metal incremental forming technology is a new flexible moldless manufacturing process in the field of plastic forming research. It can increase the forming limit of materials and is suitable for prototype manufacturing, small and medium batches, high value-added parts or parts that cannot be processed by traditional forming technology. At present, the sheet metal incremental forming process has developed from the general single-point incremental forming to the double-point incremental forming, which can be applied to the forming of steel,...

AI Technical Summary

Problems solved by technology

But the main defect of this device is that the two tool heads can only be in the top-to-top contact mode, the bottom of the processed part is prone to drum shape, and the contour accuracy is low

Although there is a back pressure cylinder to provide displacement compensation, it still cannot achieve stable and controllable real-time contact. At the same time, in the later stage of the two-point incremental forming process, the back pressure reversed the tool head and the sheet will lose contact. At this time, the circuit will be powered off. , so there is still room for improvement

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