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Grinding wheel dressing method and device for machining bearing inner ring raceway crowning

A technology of grinding wheel dressing and raceway convexity, which is applied in the field of mechanical processing, can solve the problems of high precision, failure to meet precision requirements, and complex structure of mechanical transmission devices, and achieve superior economy, high overload capacity, and simple maintenance Effect

Active Publication Date: 2015-03-04
JM BEARING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of trimming system has complex structure, cumbersome control, high precision requirements of mechanical transmission (convexity value μM level), common crawling and serial movement of mechanical systems will deform the shape, frequent daily maintenance and often fail to meet the precision requirements

Method used

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  • Grinding wheel dressing method and device for machining bearing inner ring raceway crowning
  • Grinding wheel dressing method and device for machining bearing inner ring raceway crowning
  • Grinding wheel dressing method and device for machining bearing inner ring raceway crowning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 2 As shown, the grinding wheel dressing method for processing the convexity of the bearing inner ring raceway of the present invention firstly rotates the grinding wheel 7 in the Y and Z axis spaces, makes the outer circle generatrix of the grinding wheel parallel to the X axis space, and then puts the diamond pen 8. The reciprocating swing in the Y-axis space acts as a circular arc movement, and the diamond pen trims the outer circle of the grinding wheel during the movement to form a new concave hyperbolic generatrix of the outer circle.

[0044] Specific steps are as follows:

[0045] 1. Adjustment process.

[0046] 1.1. Drive the grinding wheel seat carriage 10 to move to the right, and the grinding wheel is more than 3mm away from the diamond pen.

[0047] 1.2. Adjust the radius of arc rotation and the distance from the center of diamond pen 8 to the center of drive shaft 9 according to the convexity requirements.

[0048] 1.3. Rotate the diamon...

Embodiment 2

[0068] Such as Figures 3 to 5 As shown, the trimming device realized according to the trimming method described in Embodiment 1 of the present invention includes a machine tool base 1, a trimmer base 2 is installed on one side of the machine tool base 1, and a worm gear reducer is installed on the trimmer base 2 3, the arc-shaped rotating rocker 6 is installed on the rotating shaft 9 of the worm gear reducer 3, and the diamond pen 8 is installed on the arc-shaped rotating rocker 6, and the diamond pen 8 is limited by the positioning switch 4; 5 Within the range, it can reciprocate and swing in a circular arc motion. The other side of the machine tool base 1 is equipped with a grinding wheel base carriage 10, and a grinding wheel 7 is installed on the grinding wheel base carriage 10. The grinding wheel 7 is driven by a motor to rotate. The grinding wheel seat carriage 10 can move left and right on the machine tool base 1, specifically in a jogging manner. The trimmer base 2 i...

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Abstract

The invention discloses a grinding wheel dressing method and device for machining bearing inner ring raceway crowning. The technical scheme of the grinding wheel dressing method for machining bearing inner ring raceway crowning comprises leading a grinding wheel to be subjected to revolution of plane in Y-axis and Z-axis spaces and enabling a generatrix of an excircle of the grinding wheel to be parallel with an X-axis space. The grinding wheel dressing method for machining bearing inner ring raceway crowning is characterized by swinging a diamond pen in the Y-axis space in a reciprocating mode to perform circular motion and dressing the excircle of the grinding wheel through the diamond pen during movement to form a new concave excircle hyperbola generatrix. The grinding wheel dressing method for machining bearing inner ring raceway crowning has the advantages of being ingenious in principal due to the fact that dressing is performed through tangency of the arc track of the diamond pen and the arc of the excircle of the grinding wheel; being novel in movement due to the fact that microscopic and microscale (micron grade) modeling can be achieved through large movement (mm grade) easy to observe and achieve; being simple in structure due to omission of mechanisms such as variable amplitude and dragging plates; being highly reliable due to the fact that a worm and gear assembly can be the whole dressing mechanical structure, and being mature in technology, reliable, durable and the like.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a grinding wheel dressing method and device. Background technique [0002] The stress of the tapered roller bearing designed and processed by ordinary methods is concentrated on the contact point between the two ends of the roller and the raceway, so that fatigue and spalling occur prematurely at this position, making the bearing life very low. In order to improve this working condition, the industry generally adopts the convex shape of the inner and outer ring raceways and roller raceways to eliminate the disadvantages of contact stress concentration. In order to realize the convexity of the inner ring raceway, the grinding wheel grinding the inner ring raceway must be trimmed into a concave shape. Common grinding wheel dressing adopts the method of X, Y servo axis linkage (such as figure 1 shown). This kind of trimming system has complex structure, cumbersome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B53/075B24B53/07
CPCB24B53/07B24B53/075
Inventor 舒永峰
Owner JM BEARING GRP
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