A seam shaping method for a three-piece lap welded fuel tank
A lap welding seam and lap welding technology, which is applied in the field of three-piece fuel tank production, can solve the problems of difficult to meet the requirements of shaping effect and product consistency, protruding position of the lap seam area, and low production efficiency, etc., to achieve Elimination of bumps, high-efficiency plastic surgery, and good plastic surgery results
Inactive Publication Date: 2016-07-13
CHONGQING CONSTR ELECTROMECHANICAL CO LTD
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Problems solved by technology
[0005] For the fuel tank produced by this three-piece lap welding method, during the stretching and forming process of the upper left, upper right and right plates, the plates in the lap area are warped due to the springback of the plates, and the thermal influence of the middle seam lap welding process makes the lap welds The location of the area is seriously raised
In welding seam shaping, if the existing conventional manual roller shaping method is used, there will be defects such as low production efficiency, and the shaping effect and product consistency are difficult to meet the requirements. The shaping method with good effect can meet the requirements of welding seam shaping of three lap welding fuel tanks
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Embodiment Construction
[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0031] In specific implementation: a method for shaping the middle seam of a three-piece lap welded fuel tank, using a shaping mold for shaping. The shaping mold is relatively provided with a die and a punch, and the die has an arc-shaped smooth shaping corresponding to the upper shell of the fuel tank. On the surface, the convex mold has an arc-shaped smooth shaping surface corresponding to the upper shell of the fuel tank. The upper shell of the fuel tank is placed between the die and the punch, and the plastic is forcibly squeezed by a press. Among them, a wedge-eliminating groove is designed on the smooth shaping surface corresponding to the shape of the inner cavity of the fuel tank shell in the convex die corresponding to the position of the welding seam, so that during shaping, the excess material at the overlapping weld area of the fuel tank shell is...
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The invention discloses a method for shaping a center seam of a three-piece overlap welded oil tank. The method is characterized in that a shaping die is used for shaping, a female die body and a male die body are oppositely arranged on the shaping die, the female die body is provided with an arc-shaped smooth shaping surface corresponding to a shell body on the upper portion of the oil tank, the male die body is provided with an arc-shaped smooth shaping surface corresponding to the shell body on the upper portion of the oil tank, the shell body on the upper portion of the oil tank is placed between the female die body and the male die body, and shaping is conducted through forceful extrusion by a pressing machine. By the adoption of the shaping method, protrusions in the overlap welding seam area can be eliminated, operation is easy, shaping is efficient, shaping effect is good, and the surface of the shaped oil tank can meet design requirements.
Description
technical field [0001] The invention relates to a production method of a three-piece fuel tank of a motorcycle; in particular, it relates to a seam shaping method of a three-piece lap welded fuel tank. Background technique [0002] Harley Prince motorcycles are loved by the majority of motorcycle users because of their smooth shape, grandeur and nobility. In the Harley Prince motorcycle, in order to match the shape of the whole vehicle, the fuel tank is generally designed with a large head and a small rear, and the corners are smoothly transitioned. The overall structure is similar to the shape of an egg. Then the fuel tank with this sleek structure gradually became popular, and it is also used in some other types of motorcycles. [0003] Existing motorcycle fuel tanks with common structures are generally produced in a production method in which the upper and lower halves of the tank are joined together. In this production mode, the tank is obtained by casting or multiple s...
Claims
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IPC IPC(8): B21D37/10B21D37/12
CPCB21D37/10B21D37/12
Inventor 邓偼代常建
Owner CHONGQING CONSTR ELECTROMECHANICAL CO LTD