Processing method of non-circular raceway of aviation thin-walled bearing

Abstract

The invention relates to metal cutting methods of bearing parts, and mainly relates to an aviation thin-wall bearing noncircular raceway machining method. The aviation thin-wall bearing noncircular raceway machining method comprises the steps that firstly, the inscribed circle radius r and the circumscribed circle R of a thin-wall bearing noncircular raceway needing machining are worked out according to the dimensions of the thin-wall bearing noncircular raceway; an appropriate workpiece, namely a bearing ring, is selected as a raw material according to the dimensions of the thin-wall bearingnoncircular raceway needing machining; a workpiece revolution locus equation and an abrasive wheel feeding equation are input into a high-speed grinding performance apparatus; the workpiece revolutionlocus equation simulates the movement locus of a workpiece shaft in the Z-axis direction; and the abrasive wheel feeding equation simulates the movement locus of an abrasive wheel spindle in the X direction, and noncircular raceway grinding is implemented under the control of a fixture and the locus equation. With the aviation thin-wall bearing noncircular raceway machining method, noncircular grinding of an outer ring raceway surface of a specially-shaped thin-wall roller bearing is implemented, it is realized that the noncircular theoretic contour curve of the outer ring raceway surface coincides with an actual contour curve, and the requirement on the geometrical accuracy of product machining is met.

Description

technical field [0001] The invention relates to a metal cutting processing method for bearing parts, and mainly relates to a non-circular raceway processing method for aviation thin-walled bearings. Background technique [0002] The generatrix of the roller bearing outer ring raceway (inner circular surface) is usually a straight generatrix. The grinding process of the raceway (inner circle surface) of the outer ring of this type of roller bearing adopts the method of grinding in the electromagnetic centerless fixture and the linear movement of the grinding head. The workpiece to be processed is placed in the centerless fixture, and the button is pressed to start the disk and The grinding wheel motor makes it rotate, and rotates the feed handwheel, so that the grinding wheel contacts the inner surface of the workpiece to be ground. The above method can realize the grinding process of the generatrix of the inner circle surface as a straight generatrix; but for the generatrix...

AI Technical Summary

Problems solved by technology

The above method can realize the grinding process of the generatrix of the inner circle surface as a straight generatrix; but for the generatrix of the outer ring raceway (inner circle surface) of the roller bearing is a curved surface generatrix (such as aviation thin-walled bearings), the above method cannot be realized

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