A follow-up tracking device for a camshaft magnetic flux leakage probe

Abstract

The invention belongs to the field of cam shaft nondestructive detection equipment and discloses a cam shaft leakage flux probe follow-up tracking device. The device comprises a base, a swing arm, a swing block and a leakage flux probe assembly. The device is characterized in that one end of the swing arm is connected to the base and can swing up and down around a connection point; the other end of the swing arm is connected with the swinging block; a spring, the leakage flux probe assembly and a group of guiding wheels are arranged on the swinging block; the spring is used for adjusting the up-down position of a leakage flux probe in a self-adaption mode; the group of the guiding wheels are used for contacting the periphery of a cam shaft to be detected; the leakage flux probe assembly isused for detecting leakage magnetic fields generated by defects on the cam shaft to be detected; a probe in the leakage flux probe assembly is arranged on a central line extension line among the group of the guiding wheels, so that the probe can be always along the normal direction of the cam shaft to be detected in a detection process. According to the cam shaft leakage flux probe follow-up tracking device disclosed by the invention, floating fit between the leakage flux probe and the surface of a cam is achieved, and tracking signals in the detection process are eliminated; the cam shaft leakage flux probe follow-up tracking device has the advantages of ingenious structure, high detection flexibility, good stability and the like.

Description

technical field [0001] The invention belongs to the field of camshaft non-destructive testing equipment, and more specifically relates to a camshaft magnetic flux leakage probe follow-up tracking device. Background technique [0002] In the process of modern industry, the camshaft is a key component widely used in mechanical products such as automobiles and internal combustion engines. The quality of its products, especially the cracks generated during processing, directly affect the performance and life of various mechanical equipment. In the actual production process, the main reason for the grinding cracks of the camshaft is related to the grinding process. The heat generated during the grinding of the camshaft is the high temperature of the cam surface. Insufficient cooling will cause additional tissue stress on the surface layer of the cam. Coupled with the heat generated by grinding, the surface temperature of the part rises rapidly, and the superposition of this struc...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a follow-up tracking device for a camshaft magnetic flux leakage probe. Through the design and setting of its key components, the swing arm, the swing block and the magnetic flux leakage probe assembly, its purpose is to It enables the camshaft surface to be tracked when the cam surface curvature of the camshaft changes, thereby solving the technical problems of low detection sensitivity, poor stability and high price of the cam detection device

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