Processing method of two concentric pin holes on the rear foot connecting plate of the rear seat cushion of the automobile

Abstract

The invention discloses a machining method for two concentric through pin holes of a rear leg connecting plate of an automobile back seat cushion. The machining method includes the steps: S1 determining the diameters of a first through hole and a second through hole of the rear leg connecting plate of the back seat cushion, the distance between the first through hole and the second through hole and material thicknesses; S2 preparing two phi 10 punches with different lengths, and mounting the punches at positions on one side of two punching processes of a mold for producing the rear leg connecting plate 1 of the back seat cushion; S3 mounting the prepared punches in place and sequentially punching parts in order; S4 punching the first through hole in one side of the rear leg connecting plate 1 of the back seat cushion by the short punch, and then punching the second through hole by the long punch approaching to the other side in the next step. Concentricity of the first through hole andthe second through hole can be effectively ensured, and disqualification of the parts caused by eccentricity of the two through pin holes in the rear leg connecting plate of the seat cushion after welding production is avoided.

Description

Technical field [0001] The invention belongs to the technical field of automobile parts, and particularly relates to a method for processing two concentric pin holes of a rear foot connecting plate of a rear seat cushion of an automobile. Background technique [0002] With the development of economy, the popularity of automobiles as a means of transportation has become higher and higher, and automobiles have become the most important means of transportation for people. At present, most of the motor vehicles on the market are mainly equipped with seat cushions, so the welding parts of the rear foot connecting plate of the seat cushion have become an indispensable part of many seat cushions. However, there are various situations of motor vehicle seat cushions on the market, and the welding parts of the rear foot connecting plate of the natural seat cushion also have different installation positions. [0003] There are many types of welding parts for the rear foot connecting plate of...

AI Technical Summary

Problems solved by technology

The position of the punching hole on the connecting plate of the rear foot of the seat cushion is a very important part, but when installing the pin shaft, there will be a phenomenon that the punching hole is not concentric

As a result, the pin shaft on the welded part of the rear foot connecting plate of the seat cushion cannot pass through the concentric hole, resulting in production errors, which is not conducive to energy saving and efficiency enhancement of the enterprise

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