High-precision manufacturing method for auto parts

Abstract

The invention provides an automobile accessory and a high precision manufacturing method thereof. The automobile accessory and the high precision manufacturing method thereof solve the problems that when an existing automobile accessory is produced, a tool edge shearing interval is set according to the stock thickness, rough edges of the existing automobile accessory are excessively long when the shaping tool edge shearing interval is used to cut the rough edges, and therefore precision of a circular hole is influenced, and a weakness portion in the middle of the existing automobile accessory warps and deforms due to shearing influences and the like. The automobile accessory comprises a sheet body, wherein bending side walls are arranged on two sides of the body, and a plurality of circular holes are formed in the bending side walls. The high precision manufacturing method of the automobile accessory includes: (1) punching a location hole; (2) punching precutting tool edges of the circular holes; (3) performing fine trimming engineering of the circular holes; (4) performing burring engineering on the circular holes; (5) performing adjustment engineering on the automobile accessory. According to the automobile accessory and the high precision manufacturing method thereof, a stamping die is improved and stamping processes of precutting, fine trimming and burring which function in cooperation code are added so as to enable the circular holes to be smooth and improve precision of the circular holes, and furthermore the adjustment engineering is added, and therefore flatness requirements of a weakness portion in the middle of the automobile accessory are satisfied. Furthermore, the automobile accessory and the high precision manufacturing method thereof guarantee that interval precision of the circular holes is eligible.

Description

technical field [0001] The invention belongs to the technical field of mold processing for parts and components, and relates to a product of auto parts and its production method, in particular to an auto part and its high-precision manufacturing method. Background technique [0002] With the rapid development of my country's social economy and technology, the processing technology of parts and molds is becoming more and more technological and advanced, and people are more inclined to the demand direction of multiple functions, concentrated performance and convenient portability. Therefore, the development trend of the shape of parts is smaller and smaller, more and more precise and integrated, that is, they are developing towards thin, small and light, and require high precision. [0003] Generally, when stamping thick materials in the industry, in order to consider the mass production and the life of the parts, the shearing will be carried out according to the cutting gap s...

AI Technical Summary

Problems solved by technology

[0003] Generally, when stamping thick materials in the industry, in order to consider the mass production and the life of the parts, the shearing will be carried out according to the cutting gap setting of various raw materials. However, if the stamping is carried out according to the cutting gap of the forming blade Manufactured, the sheared burr will grow with the thickness of the material

Taking the material thickness of this auto part as 2.0mm as an example, stamping is carried out according to the normal cutting gap of the forming knife edge, and the height of the cut burr is about 0.1mm, but the tolerance accuracy required for the assembly of this part in the car is only +0.05 / -0mm, so the produced parts are unqualified

On the other hand, some round holes need to be cut out on this auto parts product, because the weak part in the middle of the product affected by the shearing will produce a little warping deformation, and the warping deformation directly affects the distance between the round holes, thereby reducing the overall product accuracy and quality

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