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Connecting and forming composite method for sedan sky light zinc plating frame

A galvanized sheet and frame technology, used in welding power sources, welding equipment, energy storage discharge welding, etc., can solve the problems of difficult to guarantee welding quality and surface quality, poor overall product rigidity, complex workpiece shape, etc. Solving problems, low cost of welding equipment, and the effect of meeting mass production requirements

Inactive Publication Date: 2007-05-23
SHANGHAI JIAOTONG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using sheet metal stamping and forming processing technology, the quality of the parts is significantly improved, but the cost of the mold is high, and the intermediate materials will be wasted if they cannot be used
The method of welding into a whole after partial stamping is adopted. Due to the complex shape of the stamped workpiece, partial welding, incomplete penetration and welding deformation are easy to occur locally, the overall rigidity of the product is not good, and the welding quality and surface quality in mass production are poor. Difficult to guarantee
Using the method of welding first and then integral stamping can avoid the disadvantages of the above two methods as the processing technology of the skylight frame, but if the most commonly used welding method of tailor-welded blanks is used as its connection technology, as described in the above documents has its limitations

Method used

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  • Connecting and forming composite method for sedan sky light zinc plating frame
  • Connecting and forming composite method for sedan sky light zinc plating frame
  • Connecting and forming composite method for sedan sky light zinc plating frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, the specific implementation process of applying the inventive method to complete the POLO sunroof frame is as follows:

[0021] 1. Blanking the galvanized sheet into a right-angled flat piece. The grade of the galvanized sheet is BUFDE+Z produced by Baosteel, with a thickness of 0.5mm and a width of 50mm. On this basis, the punching and embossing processes are completed.

[0022] 2. After positioning the right-angle flat sheet overlapping 1.5mm up and down, it is welded into a half-frame-shaped flat-plate frame by a flattening capacitor energy storage welding method, and then the half-frame-shaped flat-plate frame is welded into a square flat-plate frame.

[0023] 3. In the stamping die, the entire square flat frame is flanged to 90° at one time.

[0024] Step 4: Carry out the second flanging of the entire frame in the stamping mold, firstly preform the flanging at 45°, then flanging to 90° and shaping the whole frame.

[0025] This embodiment has high we...

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Abstract

The present invention relates to forming technology. The composite connection and formation process of zinc coating frame for sedan sky light includes the following steps: 1. cutting zinc coating sheet into rectangular sheet and punching holes and lubes; 2. welding first to form flat semi-frame and then to form rectangular frame via capacitor energy storing welding; 3. the first edge turning of the whole frame in 90 deg inside a punching mold; 4. the second edge turning of the whole frame in a punching mold including pre-turning of 45 deg and the turning of 90 deg; and 5. cutting edges to eliminate excessive parts. The said process has low cost, high welding efficiency, and other advantages.

Description

technical field [0001] The invention relates to a forming compound method in the technical field of material forming, in particular to a car sunroof galvanized sheet frame connection and forming compound method. Background technique [0002] The car sunroof frame is a closed frame made of galvanized sheets. Compared with ordinary stamping parts, it has the characteristics of high forming quality, good rigidity, complex shape, large structural size, and relatively small material thickness. Therefore, its processing technology has high difficulty. [0003] After searching the literature, no processing technology related to galvanized sheet frame products for skylights was found, but it was found that the author Wang Bingde wrote an article "Welding method of tailor-welded blanks and its experimental research" in "Mechanical Design and Manufacturing", 2002 (3), which proposed The most commonly used joining technologies for tailor-welded blanks at home and abroad are rolling we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04B23K11/26B23K11/02
Inventor 宋政华学明蔡艳高凯生瞿铭维王敏丁伟民
Owner SHANGHAI JIAOTONG UNIV
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