Computer numerical control grinding machine dedicated to grinding machining of outer-ring excircle and inner-ring outer raceway of bearing

Abstract

The invention discloses a computer numerical control grinding machine dedicated to the grinding machining of an outer-ring excircle and an inner-ring outer raceway of a bearing. The computer numericalcontrol grinding machine is characterized in that a head frame seat and an abrasive wheel frame backing plate device are mounted on a machine body; an electromagnetic chuck used for clamping a ring blank is arranged at the front end of the head frame seat; an abrasive wheel seat and a two-coordinate trimmer are arranged on the abrasive wheel frame backing plate device; a hydrodynamic-hydrostaticelectric spindle is arranged in the abrasive wheel seat; an abrasive grinding wheel is arranged at the front end of the hydrodynamic-hydrostatic electric spindle; a hydrodynamic-hydrostatic oil tank is connected with the tail end of the hydrodynamic-hydrostatic electric spindle; the abrasive grinding wheel is positioned on one side edge of the electromagnetic chuck; a trimming head used for trimming the abrasive grinding wheel is arranged on the two-coordinate trimmer; a rotatable diamond wheel and a trimming blade are arranged on the trimming head; a feeding device used for automatically conveying the ring blank is arranged on the machine body and positioned on the other side of the electromagnetic chuck; a truss-type manipulator with a visual sensor is arranged between the feeding deviceand the electromagnetic chuck; and a cooling liquid spray pipe is arranged above the abrasive grinding wheel. By adoption of the computer numerical control grinding machine, the full-automatic high-precision grinding of the outer-ring excircle and the inner-ring outer raceway of the bearing can be achieved; the operation is simple and convenient; and the machining efficiency is high.

Description

technical field [0001] The invention belongs to a special-purpose numerical control grinding machine for forming and grinding raceways of bearing rings, in particular to a special-purpose numerical control grinding machine for grinding the outer raceways of the inner and outer circles of bearing outer rings. Background technique [0002] As one of the basic parts of the mechanical industry, in the production of bearings, the grinding process of the ring raceway is the main link that determines the accuracy of the ring parts and even the entire bearing. Among them, the grinding process of the rolling surface affects the life of the bearing and the vibration reduction of the bearing. main part of the noise. Therefore, grinding has always been the key technology and core technology in the field of bearing manufacturing technology. In bearing production, the amount of grinding labor accounts for about 60% of the total labor, the number of grinding machines used also accounts fo...

AI Technical Summary

Problems solved by technology

[0005] The structure using diamond forming roller dressing (or profiling trimming) has many types and high cost;

[0006] The main shaft is driven by a motor through a belt, which affects the stability and accuracy of the main shaft;

[0007] The feeding mechanism adopts trapezoidal screw rod, and the feeding accuracy is low;

[0008] The performance is: the processing quality is not high enough and unstable, the spindle failure is frequent, the cost of grinding wheel dressing tools is high (multiple types), and the degree of automation is low.

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