Grinding method and device for outer diameter of tapered roller based on large crown

Abstract

The invention discloses a method and device for grinding the outer diameter of a tapered roller based on a large convexity. The centerless grinding machine is used to grind the positioned grinding wheel, the guide wheel and the guide plate, and the cutting method is used to complete the grinding of the outer diameter of the tapered roller. With the support angle of the guide plate, the support angle of the existing guide plate is increased to increase the component force of the roller's own weight to press the guide wheel, that is, to increase the contact friction between the guide wheel and the roller to realize the driving of the roller rotation; Change the contact area between the existing guide plate and the roller, inlay the alloy rod on the support slope of the guide plate, change the line contact between the guide plate and the outer diameter of the roller to the point contact between the cylindrical surface of the alloy rod and the outer diameter of the roller, and reduce the The small contact area makes it easy to drive the rollers to rotate. In the present invention, by changing the positioning method and structure of the guide plate, the guide wheel can drive the processed roller to rotate when the guide wheel starts to rotate, thereby realizing small-feed grinding and non-spark grinding of the grinding wheel, and improving the processing of the roller Accuracy, processing efficiency and stability of processing quality.

Description

Technical field: [0001] The invention relates to a tapered roller grinding method, in particular to a large-convex tapered roller outer diameter grinding method and device. Background technique: [0002] Usually, the convexity of the plain line of the outer diameter of the tapered roller is small, and the convexity is generally 0.02mm-0.04mm. This convexity is realized by a centerless cylindrical grinding machine or an ultra-precision machine tool, and its processing accuracy can meet the requirements of the drawing. With the continuous development of the national economy, the demand for high-precision tapered rollers with large convexity (0.14mm) in the high-end market is increasing, that is, the high-precision machining accuracy of large-convex tapered rollers cannot meet The requirements of process drawings are the problems and development trends that need to be solved in my country's bearing industry and even in the future. [0003] At present, the basic structure of cen...

AI Technical Summary

Problems solved by technology

The existing problems are: ① The rotation of the guide wheel cannot drive the processed roller to rotate. Only when the grinding wheel achieves feed grinding and reaches a certain grinding spark (reaching a certain contact extrusion force), can the roller be driven to rotate, and the roller can be processed. circular grinding motion

As a result, the roundness of the processed roller cannot meet the accuracy requirements of the process drawing ≤0.001mm

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