Method for eliminating axial thermal expansion generated by high-speed matched angular contact ball bearing
A contact ball and thermal expansion technology, which is applied to the rigid support of bearing components, bearing elements, shafts and bearings, can solve the problems of reducing the stiffness of angular contact ball bearings in combination, and achieve the effect of improving rotation accuracy and service life
Active Publication Date: 2015-06-17
LUOYANG BEARING RES INST CO LTD
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Problems solved by technology
[0006] There is no relevant report on the method of not reducing the rigidity of the assembled angular contact ball bearings but also eliminating the axial thermal expansion of the assembled angular contact ball bearings during high-speed operation
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[0021] The invention is a method for eliminating axial thermal expansion caused by high-speed assembly of angular contact ball bearings. In the method, an annular oblique cut is arranged on the inner spacer to form a heat-expandable inner spacer, or an annular oblique cut is arranged on the outer spacer to form a thermal expansion The outer spacer and the annular oblique cut can eliminate the axial thermal expansion caused by the high speed of the assembled angular contact ball bearing. The thermal expansion of the inner spacer or the thermal expansion of the outer spacer will not reduce the overall rigidity of the assembled angular contact ball bearing and improve the assembled angular contact. Rotational accuracy and service life of ball bearings.
[0022] The combination of two angular contact ball bearings of the same model back-to-back or face-to-face and with an outer spacer between the two outer rings and an inner spacer between the two inner rings is called a combined a...
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The invention provides a method for eliminating axial thermal expansion generated by a high-speed matched angular contact ball bearing. Two outer rings are correspondingly fixed while two inner rings rotate at a speed S, an inner-to-outer axial thermal expansion difference delta H1 is measured and calculated according to experiments, annular inclined cuttings are arranged on the inner spacing rings to form thermal expansion inner spacing rings, and the inner-to-outer generated axial thermal expansion difference of the matched angular contact ball bearing can be eliminated through the thermal expansion inner spacing rings at the speed S. Similarly, the two inner rings are correspondingly fixed while two outer rings rotate at the speed S, and according to an outer-to-inner axial thermal expansion difference delta H2, annular inclined cuttings are arranged on the outer spacing rings to form thermal expansion outer spacing rings to eliminate the outer-to-inner generated axial thermal expansion difference. Entire rigidity of the matched angular contact ball bearing cannot be reduced due to the thermal expansion inner spacing rings or thermal expansion outer spacing rings; and since the thermal expansion generated by the matched angular contact ball bearing at the speed S can be realized through matching of the annular inclined cuttings, rotation accuracy of the matched angular contact ball bearing is increased while service life thereof is prolonged.
Description
technical field [0001] The invention belongs to the technical field of bearings, in particular to a method for eliminating axial thermal expansion caused by high-speed assembled angular contact ball bearings. Background technique [0002] Assembled angular contact ball bearings refer to: set two angular contact ball bearings of the same model back-to-back or face-to-face as a group and arrange an outer spacer between the two outer rings, and an inner spacer between the two inner rings. The outer diameter and inner diameter of the ring match the outer diameter and inner diameter of the inner ring respectively, the outer diameter and inner diameter of the outer spacer match the outer diameter and inner diameter of the outer ring respectively, and the width of the inner spacer = the width of the outer spacer. [0003] Assembled angular contact ball bearings usually work under a certain preload state, so that through the rigid setting of the inner spacer and outer spacer, the ro...
Claims
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IPC IPC(8): F16C35/06
Inventor 李鸿亮刘良勇岳纪东马美玲刘凯歌李文超
Owner LUOYANG BEARING RES INST CO LTD