Processing method for rotating shaft of sunshading board

Abstract

A processing method for a rotating shaft of a sunshading board includes the following steps: 1 rough grinding, roughly grinding the rotating shaft to a required specification; 2 accurate grinding, accurately grinding the roughly-grinded rotating shaft to a required precision; 3 pipe bending, bending the accurately-grinded rotating shaft to a required angle; 4 stamping, stamping the side of the bended rotating shaft to be a section of flat surface capable of being matched with a jump ring to rotate; and 5 electroplating, electroplating a stainless steel layer on the surface of the rotating shaft. The processing method for the rotating shaft of the sunshading board is characterized in that a strip-shaped groove is stamped axially in the middle of the flat surface while the flat surface is stamped in step 4. The processing method for the rotating shaft of the sunshading board has the advantages of bending the pipe first and stamping the flat surface and the groove later, ensuring accuracy of the angle of the flat surface due to bending the pipe first because the angle for bending the pipe can be used for controlling the angle of the flat surface so as to achieve stability of the rotation angle and convenience for bending the pipe, causing no bending of the rotating shaft or protruding of two sides of the flat surface due to stamping the flat surface and the groove later and thereby enabling processing of centerless grinder to be convenient, and ensuring size stability because no secondary processing is required at the position of the flat surface.

Description

technical field [0001] The invention relates to the technical field of manufacturing an automobile sun visor, in particular to a processing method for a sun visor shaft. Background technique [0002] The shaft of the sun visor is one of the important parts inside the sun visor, which is related to the function and operation stability of the whole sun visor. In the prior art, processing the shaft of the sun visor generally includes the following steps: rough grinding, stamping the plane, grinding the plane, fine grinding, and pipe bending. Although the shaft of the sun visor produced by this traditional process can rotate the sun visor well, but because the shaft is bent by stamping the plane first, and the two sides of the plane protrude, the plane needs to be re-grinded, not only It causes difficulties in the processing of the centerless grinding machine, and the R angle of the arc cannot be guaranteed, resulting in an unstable rotation angle, which causes abnormal noise w...

AI Technical Summary

Problems solved by technology

Although the shaft of the sun visor produced by this traditional process can rotate the sun visor well, but because the shaft is bent by stamping the plane first, and the two sides of the plane protrude, the plane needs to be re-grinded, not only It causes difficulties in the processing of the centerless grinding machine, and the R angle of the arc cannot be guaranteed, resulting in an unstable rotation angle, which causes abnormal noise when the shaft and the circlip are matched; at the same time, due to the secondary grinding, the thickness of the tube wall of the shaft becomes thinner, The strength of the rotating shaft at the R angle of the arc will be weakened, and the service life will be shortened, so the processing method of the sun visor rotating shaft needs to be further improved

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