Technology for polishing surface of vanadized pin shaft

Abstract

The invention discloses a technology for polishing the surface of a vanadized pin shaft. A high-speed centrifugal polishing machine is adopted, a drum is arranged in the polishing machine, high-speed centrifugal operation is conducted through planetary rotation, the vanadized pin shaft, diamond abrasives, a polishing agent and water are added into the drum, the drum rotates along with a common axis and also rotates around its own axis in the reverse direction at the same time, and the revolution speed of the drum is higher than the autorotation speed of the drum. The high-speed centrifugal polishing machine and the oblique triangular diamond abrasives are adopted, so that the surface of the pin shaft can be better polished, the pin shaft low in surface roughness can be obtained, the brightness of the vanadized surface is improved greatly, and then the contact fatigue strength of the surface of the pin shaft is improved.

Description

technical field [0001] The invention belongs to the field of chain parts polishing, in particular to a polishing process for polishing the surface of a vanadium-infiltrated pin shaft. Background technique [0002] At present, the most common equipment for polishing chain pin shafts is the sky-facing double-roller polishing machine. Its characteristic is that the opening of the rollers faces upward when the rollers work, and several pin shafts can be taken out at any time to check the degree of polishing. The working principle is to use the bottom The centrifugal force generated by the high-speed operation of the rotary table makes the abrasive and the parts produce strong friction under the action of the fixed groove, forming a spiral eddy current motion, which causes the abrasive and the parts to produce rotary friction and spiral flipping. The disadvantage is that the contact between the parts and the abrasive is insufficient. , the friction force generated between them is...

AI Technical Summary

Problems solved by technology

[0002] At present, the most common equipment for polishing chain pin shafts is the sky-facing double-roller polishing machine. Its characteristic is that the opening of the rollers faces upward when the rollers work, and several pin shafts can be taken out at any time to check the degree of polishing. The working principle is to use the bottom The centrifugal force generated by the high-speed operation of the rotary table makes the abrasive and the parts produce strong friction under the action of the fixed groove, forming a spiral eddy current motion, which causes the abrasive and the parts to produce rotary friction and spiral flipping. The disadvantage is that the contact between the parts and the abrasive is insufficient. , the friction force generated between them is not enough to ensure the flatness of the pin shaft surface, and the polishing efficiency is low, the surface roughness of the pin shaft after polishing is poor, and the wear resistance and fatigue strength of the pin shaft are not high

[0003] The surface of the vanadium-infiltrated pin shaft is high in hardness. Although the aluminum oxide abrasive can grind parts with high hardness, it is far from enough in terms of actual polishing effect. The surface of the vanadium-infiltrated pin shaft polished by this process is not smooth, and the pin shaft still has scratch marks

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