Super-finishing method for reducing groove-shaped error of deep groove ball bearing
A deep groove ball bearing and groove shape technology, applied in the field of mechanical processing, can solve the problem of destroying the surface shape of the groove, and achieve the effect of increasing the area, not easy to break, and changing the roundness and waviness
Active Publication Date: 2015-07-01
ZHEJIANG XCC GRP CO LTD
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Problems solved by technology
[0010] The technical problem to be solved and the technical task proposed by the present invention are to overcome the defect that the existing super-precision method damages the surface shape of the groove more seriously, and provide a super-precision method for reducing the groove shape error of deep groove ball bearings
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Embodiment Construction
[0040] The present invention will be further described below in conjunction with the accompanying drawings of the description.
[0041] The ultra-precision method for reducing the groove shape error of deep groove ball bearings of the present invention, such as Figure 5-8 as shown ( Figure 8 The double-dotted line in the figure indicates the position where the oil stone swings to a maximum angle), which is to press the end face of the oil stone 02 against the channel 11 when the ferrule 01 of the deep groove ball bearing rotates around its axis oo Above, take the radius of the channel as the radius around the swing axis nn of the oilstone from the width center ww of the ferrule channel 11 (in view of the fact that the ferrule is circular, the width center ww of the ferrule channel 11 is a complete circle, The plane determined by this circle is the central plane in the channel width direction mentioned below) swings to both sides, the swing axis nn of the oil stone is locate...
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The invention discloses a super-finishing method for reducing a groove-shaped error of a deep groove ball bearing, belonging to a machining method. The traditional super-finishing method has the defect that the surface shape of a channel is damaged more seriously. In the super-finishing method disclosed by the invention, the end face of an oil stone is aligned to the channel and is pressed on the channel when a collar of the deep groove ball bearing rotates around the axis of the collar; with the radius of the channel as the radius, the end face of the oil stone swings towards two sides from the width center of a collar channel around a swing axis of the oil stone; and the swing axis is positioned on a central plane positioned in the width direction of the channel. The super-finishing method is characterized in that the oil stone is of a strip shape, wherein a cross section of the oil stone is rhombus; when the end face of the oil stone is aligned to the channel, a central axis of the oil stone is enabled to be intersected with and perpendicular to the axis of the collar; and one diagonal line of the cross section of the oil stone is positioned on the central plane in the width direction of the channel. When the oil stone swings, the influence on maximum interference regions at four-corner edges is basically eliminated; corresponding effective work regions are increased along with the reduction of the interference regions; and the roundness and the waveness of the collar channel can be changed more effectively in the whole circumferential direction.
Description
technical field [0001] The invention belongs to a mechanical processing method, in particular to an ultra-precision method for reducing the error of the groove shape of a deep groove ball bearing (the shape of the groove is referred to as groove shape for short). Background technique [0002] The groove of the deep groove ball bearing is a torus, which intersects with the plane passing through the axis of the ring to form an arc. This shape is fundamental to ensure the normal operation of the deep groove ball bearing. [0003] The ultra-finishing of the deep groove ball bearing raceway is the last processing procedure to increase the service life of the bearing and reduce the vibration and noise of the bearing. The use of superfinishing in the bearing industry has a long history, and it has been widely used in the industry for more than 40 years in China. The basic principle is that when the ferrule of the deep groove ball bearing rotates around its axis, the end face of th...
Claims
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IPC IPC(8): B24B33/05
Inventor 张迅雷汪燮民汪凯
Owner ZHEJIANG XCC GRP CO LTD