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Body-in-white plug welding technological method

A welding process and body-in-white technology, which is applied in welding equipment, manufacturing tools, metal processing, etc., can solve problems such as incomplete solder joints, undercuts, and increased production costs, so as to reduce production costs, increase production tempo, reduce Effects of weld underfill and undercut

Pending Publication Date: 2020-09-22
柳州市锋威汽车科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The bottom plate of the body-in-white cannot use the resistance spot welding technology due to design structural problems. Therefore, the plug welding technology is introduced. When using the general plug welding process, there will be welding defects such as incomplete solder joints and undercuts, which directly affect the entire vehicle manufacturing. Quality, when the production workshop uses the previous plug welding process for production, the repair rate of the product reaches 80%, and it is necessary to add a manual repair welding station for special repair welding, which increases the production cost. The present invention proposes a solution to the above problems A kind of body-in-white plug welding welding process method

Method used

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Embodiment 1

[0028] see Figure 1-2 As shown, the present invention is a body-in-white plug welding process, a body-in-white plug welding process, comprising an upper plate 1, a lower plate 2 and a robot 4, consisting of the following steps:

[0029] A: Set the upper plate 1 on the surface of the lower plate 2, and the maximum gap must be less than 0.8mm;

[0030] B: The upper plate 1 and the lower plate 2 need to be cleaned within 150mm of the 3rd side of the plug welding hole before welding. Cleaning before welding can prevent other debris from entering the weld and affect the welding quality;

[0031] C: A number of plug welding holes 3 are opened on the surface of the upper plate 1 in a multi-stage manner, and the first welding point 101, the second welding point 102 and the third welding point 103 are arranged in the plug welding hole 3, and the first welding point 101 is set in the plug welding hole 3. The position of one welding point 101 is set as "down", the positions of the seco...

Embodiment 2

[0042] see Figure 1-2 As shown, the present invention is a body-in-white plug welding process method, which adopts a segmented multi-point welding method, and the method steps are as follows:

[0043] Step 1: Divide the position of the plug welding hole, and divide the points of the plug welding hole 3. The position and number of points are determined according to the size of the 3 digits of the plug welding hole. The first welding point 101 is the first welding point, and the number The welding sequence of the second welding point 102 and the third welding point 103 is interchangeable;

[0044] Step 2: Adjust the welding trajectory of the robot 4. The welding trajectory and angle of the robot 4 depend on the number of plug welding points and the inclination angle of the plate;

[0045]Step 3: Adjust the welding parameters, different welding parameters will be selected for different plug welding points, and the welding parameters need to be decreased point by point.

Embodiment 3

[0047] see Figure 1-2 As shown, the present invention is a kind of plug welding welding process for a body in white, wherein the welding angle of the robot 4 mainly considers the directivity of the arc, the horn-shaped arc will cause undercut to the edge of the plug welding hole 3, and the welding angle of the robot It needs to be vertical or inwardly inclined, and the material of the welding wire 6 can be HO8Mn2SiA, which has a series of excellent welding performances such as high production efficiency, stable and reliable welding quality, beautiful shape, and large penetration depth.

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Abstract

The invention discloses a body-in-white plug welding technological method and relates to the technical field of the automobile manufacturing process. The body-in-white plug welding technological method comprises an upper plate, a lower plate and a robot; the robot is arranged on one side of the upper plate and the lower plate and is connected with a welding gun; a welding wire is connected with one end of the welding gun; the upper plate is in contact with the lower plate; a plurality of plug welding holes are formed in one surface of the upper plate at equal intervals; a first welding point,a second welding point and a third welding point are arranged in the plug welding holes; and the program of the robot is set to enable the welding wire to weld the first welding point in priority andthen weld the second welding point or the third welding point. Through adopting the body-in-white plug welding technological method, the repair rate can be reduced to be about 5% from 80% compared with a traditional plug welding technology, so that the situation that a sealing seam is not filled or undercut is reduced, a manual repair welding station is not needed, repair welding and repair can besent to next procedure for implementation, the production cost is reduced, and the product production takt is accelerated.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing technology, in particular to a body-in-white plug welding process. Background technique [0002] Body in White (Body in White) refers to the welding assembly of body structural parts and cover parts according to the definition of body terminology standards and textbooks, and includes front fenders, doors, engine hoods, and trunk lids, but does not include accessories and decorations. Pieces of unpainted bodywork. The painted body-in-white plus interior and exterior decoration (including instrument panel, seat, windshield, carpet, interior trim, etc.) and electronic and electrical systems (audio, wiring harness, switches, etc.), plus chassis system (including Dynamic, suspension system, etc.), plus the powertrain system (including engine, gearbox, etc.) to form a vehicle. [0003] The bottom plate of the body-in-white cannot use the resistance spot welding technology due to desig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/235
CPCB23K9/16B23K9/235B23K2101/006
Inventor 张增芳张竞
Owner 柳州市锋威汽车科技有限公司
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