A kind of auto parts grinding jig

Abstract

The invention belongs to the technical field of production and processing of automobile parts, and in particular relates to a grinding jig for automobile parts, which is used for positioning the end of a piston ring during grinding, and comprises a plane support plate; an inner positioning part; and an outer positioning part. In the present invention, when grinding the section of the piston ring, the end to be ground is compressed into a shape consistent with the assembled state. At this time, the radial direction of the piston ring in the assembled state can be easily determined, and the radial direction is the radial direction of the inner positioning portion. When grinding, it is only necessary to make the blade face of the sharpening tool and the radial direction of the inner positioning part consistent to ensure that the processed section is consistent with the radial direction of the piston ring in the assembled state. At this time, as long as the processing amount is well controlled, the piston can be After the ring is closed, the two sections are tightly attached together.

Description

technical field [0001] The invention belongs to the technical field of production and processing of auto parts, in particular to a grinding fixture for auto parts. Background technique [0002] The piston ring is an open-loop structure made of elastic metal material, which has strong radial expansion performance. In the natural state, the diameter of the piston ring is larger than the diameter of the assembled state, and there is a large gap between the two ends of the piston ring. When installing the piston ring, it is necessary to compress the piston ring to close the gap between the two sections. In order to ensure that the two sections can be evenly fitted when the gap is closed, it is necessary to ensure that the two sections have a high degree of parallelism, that is, the two closed surfaces. It must be parallel to the radial direction after the piston ring is closed. However, when the piston ring is processed in the prior art, the piston ring is generally in a state ...

AI Technical Summary

Problems solved by technology

However, in the existing technology, when the piston ring is processed, the piston ring is generally in a naturally stretched state. In this state, the radial direction of the compressed piston ring cannot be determined. Therefore, when the piston ring is compressed, an inclination angle is likely to occur between the two sections, which affects the piston. ring sealing properties

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