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Sheet incremental forming device and method based on auxiliary material superposition

A technology of progressive forming and auxiliary materials, which is applied in the direction of forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems such as the deterioration of the surface quality of parts, and achieve the effects of reducing friction, improving processing efficiency, and reducing shear stress

Inactive Publication Date: 2019-04-16
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

On the contrary, if you want to improve the efficiency of incremental forming, the surface quality of parts will inevitably deteriorate

Method used

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  • Sheet incremental forming device and method based on auxiliary material superposition
  • Sheet incremental forming device and method based on auxiliary material superposition

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Embodiment

[0027] Such as figure 1 , 2 As shown, a sheet metal progressive forming device based on superimposed auxiliary materials, including a tool head 1, auxiliary materials 3 and lubricating oil 4, the shape of the auxiliary materials 3 matches the base material 2 to be processed, and is laid on the surface of the base material 2, The lubricating oil 4 is filled between the base material 2 and the auxiliary material 3. The tool head 1 applies force to the base material 2 through the auxiliary material 3 to perform progressive forming. The lubricating oil 4 is applied on the surface of the base material 2 to reduce its and auxiliary materials. 3, while ensuring that the base material 2 and the auxiliary material 3 are not welded after forming, and the two can be successfully separated.

[0028] The auxiliary material 3 can be a material with a certain thickness and a forming limit greater than that of the base material 2, such as steel.

[0029] A sheet metal incremental forming me...

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Abstract

The invention relates to a sheet incremental forming device and method based on auxiliary material superposition. The device comprises a tool head (1), and further comprises an auxiliary material (3)and lubricating oil (4); the auxiliary material (3) is matched with to-be-machined base metal (2) in shape and laid on the surface of the base metal (2); and the space between the base metal (2) and the auxiliary material (3) is filled with the lubricating oil (4). The tool head (1) applies force to the base metal (2) through the auxiliary material (3) for incremental forming. Compared with the prior art, the manufacturing method is innovated, the effect that the surface of the base metal is free of any residual height and machining marks can be ensured, and high surface quality is achieved; the contradiction between the surface quality and the forming time is successfully resolved, parts can be formed with large feed depth, and the machining efficiency of incremental forming is greatly improved; and the machining environment of base metal forming is improved in principle, stress distribution and thickness distribution are improved, friction force is reduced, sheet springback is reduced, and the contour precision is improved.

Description

technical field [0001] The invention relates to a sheet material progressive forming device, in particular to a sheet material progressive forming device and method based on superimposed auxiliary materials. Background technique [0002] The surface quality of parts is an important factor to judge the forming quality of incremental forming parts. Jeswiet et al. studied in the literature "Asymmetric incremental sheet forming. (Advanced Materials Research 2005, 6–8:35–58.)" and found that the contour line machining trajectory will leave an unavoidable and eliminated machining trace on the surface of the part. In the literature "Spiral tool-path generation with constant scallop height for sheet metal CNC incremental forming. (International Journal of Advanced Manufacturing Technology, 2011, 54: 911–919)" by Zhu et al. The calculation method of the residual height, and found that in order to obtain a smaller residual height and better surface quality, it is necessary to choose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/18B21D31/00
CPCB21D31/005B21D37/18
Inventor 常志东陈军李铭
Owner SHANGHAI JIAO TONG UNIV
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