Helical Superfinishing Device for Raceway of Bearing Inner Ring

Abstract

The invention relates to a device for spiral superfinishing of a raceway of a bearing inner race. According to the device for the spiral superfinishing of the raceway of the bearing inner race, the output end of an oscillating shaft of a spatial connecting rod vibration oscillator is fixedly connected with a spline housing, a spline shaft which is matched with the spline housing is movably connected in the spline housing, the front end of the spline shaft is fixedly connected with an oilstone swinging head, the oilstone swinging head is connected with the spline housing through a tension spring, a push rod is arranged in the oscillating shaft in a penetrating mode, the front end of the push rod penetrates out of the front end of the oscillating shaft to be in contact connection with the spline shaft, and the rear end of the push rod penetrates out of the rear end of the oscillating shaft to be connected with a pushing device with the stroke and speed adjustable. According to the device for the spiral superfinishing of the raceway of the bearing inner race, the lead angle and screw pitch of spiral motion can be changed by adjusting the oscillating angle of the oscillating shaft and the eccentricity of an eccentric cam or the movement amount of the electric push rod; the speed and oscillating frequency of the spiral motion can be changed by adjusting the rotating speed of a driving device of a speed regulating motor of the spatial connecting rod vibration oscillator and a speed regulating motor of the pushing device with the stroke and speed adjustable or the pushing speed of the electric push rod, superfinishing surface roughness of raceways of different bearing inner races is improved, and waviness is reduced.

Description

Technical field [0001] The invention relates to a superfinishing device for a bearing inner ring raceway, in particular to a device for superfinishing in a spiral manner. Background technique [0002] The way of spiral super finishing, such as figure 1 As shown, the inner ring of the bearing is fixed on the main shaft of the screw superfinishing machine and rotates with the main shaft. Two pieces of oil stones with different characteristics are used for superfinishing at the groove positions at both ends of the diameter of the inner ring of the bearing. Among them, one oilstone performs spiral motion (oscillation angular velocity ω, linear motion velocity ν synthesis), oilstone pressure P, and the other oilstone performs oscillating motion (oscillation angular velocity ω). [0003] The existing spiral super-finishing device adopts a fixed-ratio transmission mode. The movement mechanism of the coarse super-oilstone and the fine super-oilstone is driven by the same motor and the V-be...

AI Technical Summary

Problems solved by technology

However, it is not suitable for ultra-finishing of raceways of inner rings of bearings in small batches and with multiple specifications where the pitch and swing of the spiral motion need to be adjusted frequently.

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