Stamping method for automobile covering part
An automobile cover and punching technology, which is applied in the direction of vehicle parts, upper structure, and upper structure sub-assemblies, can solve problems such as unreasonable design of recessed structures, and achieve smooth dispersion process, prevention of stress concentration, and uniform stress dispersion. Effect
Inactive Publication Date: 2016-04-13
WUHAN CITY VOCATIONAL COLLEGE
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Problems solved by technology
However, the applicant found through engineering tests that although the stress can be dispersed during the flanging process, fine wrinkles still occur on the flanging surface, and these wrinkles are easily overlooked by the staff. The reason for this kind of wrinkles may be due to the design of the concave structure caused by unreasonable
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[0029] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0030] like figure 1 Shown, a kind of stamping method of automobile panel, comprises the steps:
[0031] Step 1: drawing: that is, drawing the sheet material into the shape of a car cover, and the car cover in this embodiment is a car roof. The material of the top cover is required to have good plastic deformation performance, mostly steel plates such as 08 or 09A1. Make the initial contact position between the punch and the sheet as close as possible to the central part of the sheet so that it can be evenly pulled into the die, which can effectively prevent the sheet from breaking during drawing. The stamping direction must ensure that the punch can enter the die, and the pressing surface should be as flat as possible, which is c...
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Abstract
The invention discloses a stamping method for an automobile covering part. The stamping method comprises the following steps: drawing: drawing a plate into the shape of the automobile covering part; trimming: cutting off the residual part of the side edge of the automobile covering part; stamping: stamping out a window-shaped hole in the surface of the automobile covering part; prefabricating: prefabricating a sunken structure between a trimming line and a flanging line of the window-shaped hole; and flanging: flanging the window-shaped hole to turn over the sunken structure. The stamping method not only can eliminate stress concentration generated by flanging, but also can avoid occurrence of folding.
Description
technical field [0001] The invention relates to the field of automobile manufacturing, in particular to a stamping method of an automobile cover. Background technique [0002] Automobile panels refer to the special-shaped surface and internal parts made of thin metal sheets that constitute the automobile body or cab, cover the engine and chassis. The body of the car and the cab of the truck are composed of covering parts and general stamping parts. After the covering parts are assembled, they form the entire external and internal shape of the body or cab. It is not only an appearance decorative part, but also a closed thin Shell-shaped force-bearing parts. Classified by function and location, coverings can be divided into three categories: external coverings, internal coverings and skeleton coverings. There are special requirements for the appearance quality of external cladding and skeleton cladding, and the shape of internal cladding is often more complicated. Compared ...
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IPC IPC(8): B21D53/88B21D35/00B62D25/00
CPCB21D35/002B21D53/88B62D25/00
Inventor 杨素华韦全詹莉袁博周洪光操成佳孙利坚
Owner WUHAN CITY VOCATIONAL COLLEGE