CN103206461B - Method for eliminating axial thermal expansion generated by high-speed matched angular contact ball bearing - Google Patents
Method for eliminating axial thermal expansion generated by high-speed matched angular contact ball bearing Download PDFInfo
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- CN103206461B CN103206461B CN201310090641.6A CN201310090641A CN103206461B CN 103206461 B CN103206461 B CN 103206461B CN 201310090641 A CN201310090641 A CN 201310090641A CN 103206461 B CN103206461 B CN 103206461B
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- thermal expansion
- spacer
- outer ring
- cone
- axial thermal
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Abstract
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
The invention belongs to technical field of bearings, especially a kind of eliminate assembly angular contact ball bearing at a high speed produce the method for axial thermal expansion.
Background technique
Assembly angular contact ball bearing refers to: by back-to-back for the angular contact ball bearing of two same models or be set to one group face-to-face and configure between two outer rings between outer ring spacer, two inner rings and configure cone spacer, the external diameter of cone spacer and internal diameter mate with the external diameter of inner ring and internal diameter respectively, the external diameter of outer ring spacer and internal diameter mate with the external diameter of outer ring and internal diameter respectively, the width of the width=outer ring spacer of cone spacer.
Assembly angular contact ball bearing carries out work usually under certain pretightening force state, is arranged like this, can improve the running accuracy of assembly angular contact ball bearing and increase its rigidity by the rigidity of cone spacer and outer ring spacer.
Under normal circumstances, two outer rings in assembly angular contact ball bearing to be mounted on bearing support and to be non-rotary, two inner rings to be then arranged in rotating shaft and to drive it to rotate by rotating shaft, cone spacer and outer ring spacer play restriction two inner rings and two outer rings produce axial displacement, but by observing and testing in real work: rotating shaft can cause the temperature of assembly angular contact ball bearing to raise when running up, specific to inner ring, temperature increase on outer ring and bearing support is not identical, this just causes cone spacer to be also not identical with the temperature increase of outer ring spacer, because cone spacer and outer ring spacer width is when mounted equal, temperature raises the axial thermal expansion amount causing the axial thermal expansion amount ≠ outer ring spacer of cone spacer, the difference of difference its axial thermal expansion amount larger of the temperature of cone spacer and outer ring spacer is larger, this just badly influences running accuracy and the working life of assembly angular contact ball bearing.
Report, cone spacer or outer ring spacer are changed into the axial thermal expansion that spring ring produces when running up to solve assembly angular contact ball bearing, no matter but be that cone spacer changes spring ring into or outer ring spacer changes spring ring into, but the rigidity of assembly angular contact ball bearing can be reduced.
Neither reduce the rigidity of assembly angular contact ball bearing and the method for the axial thermal expansion that assembly angular contact ball bearing produces when running up can be eliminated, relevant report that so far there are no.
Summary of the invention
For solving the problem, the invention provides a kind of eliminate assembly angular contact ball bearing at a high speed produce the method for axial thermal expansion, the method forms thermal expansion cone spacer by arranging circular slanting otch on cone spacer, or arranging circular slanting otch on outer ring spacer forms thermal expansion outer ring spacer, circular slanting otch can eliminate the axial thermal expansion that assembly angular contact ball bearing produces at a high speed, thermal expansion cone spacer or thermal expansion outer ring spacer all can not reduce the integral rigidity of assembly angular contact ball bearing, improve running accuracy and the working life of assembly angular contact ball bearing.
For achieving the above object, the present invention adopts following technological scheme:
A kind of eliminate assembly angular contact ball bearing at a high speed produce the method for axial thermal expansion, by back-to-back for the angular contact ball bearing of two same models or be set to one group face-to-face and configure outer ring spacer between two outer rings, the compound mode configuring cone spacer between two inner rings is called assembly angular contact ball bearing, the external diameter of cone spacer and internal diameter mate with the external diameter of inner ring and internal diameter respectively, the external diameter of outer ring spacer and internal diameter mate with the external diameter of outer ring and internal diameter respectively, the width of the width=outer ring spacer of cone spacer, setting outer ring spacer is made by identical metallic material with cone spacer, setting assembly angular contact ball bearing rotating speed is at a high speed S, cone spacer is recorded and the axial thermal expansion amount of outer ring spacer under different conditions exists following difference through test:
1. when relative to fixing, two inner rings rotate under described S in two outer rings, the axial thermal expansion amount of the axial thermal expansion amount > outer ring spacer of cone spacer, the axial thermal expansion amount=Δ H of the axial thermal expansion amount-outer ring spacer of setting cone spacer
1, Δ H
1be called that the interior external axial thermal expansion that cone spacer produces relative to outer ring spacer is poor;
2. when two inner rings relative to fixing, rotate under described S by two outer rings, the axial thermal expansion amount of the axial thermal expansion amount > cone spacer of outer ring spacer, the axial thermal expansion amount=Δ H of the axial thermal expansion amount-cone spacer of setting outer ring spacer
2, Δ H
2be called that the outer internal axial thermal expansion that outer ring spacer produces relative to cone spacer is poor;
Feature of the present invention is:
To cut sth. askew a circular slanting otch by cone spacer or the axial direction of outer ring spacer, the width of the circular slanting otch (5.1) that cone spacer is cut sth. askew equals Δ H
1, the width of the circular slanting otch (5.1) that outer ring spacer is cut sth. askew equals Δ H
2, circular slanting otch and cone spacer or the central axis of outer ring spacer is α °, circular slanting otch is in 1/2 place of cone spacer width or outer ring spacer width by the position of described central axis, after circular slanting otch: the cone spacer of cutting sth. askew is divided into two symmetry equivalent and thermal expansion cone spacers of the expansion gap had, the outer ring spacer of cutting sth. askew is divided into two symmetry equivalent and thermal expansion outer ring spacers of the expansion gap had, when run into above-mentioned 1. time, described thermal expansion cone spacer is placed between two inner rings, and outer ring spacer is placed between two outer rings, under described S, can to eliminate described interior external axial thermal expansion poor for described thermal expansion cone spacer, when run into above-mentioned 2. time, be placed between two outer rings by described thermal expansion outer ring spacer, and be placed in by cone spacer between two inner rings, under described S, described thermal expansion outer ring spacer can disappear except as noted internally, and axial thermal expansion is poor.
The Angle ambiguity of α described above ° is at 83 ~ 87 °.
Owing to adopting technological scheme described above, the present invention produces and solves effect as follows:
1, when run into two outer rings relative to fixing and two inner rings rotate under described S time, external axial thermal expansion difference Δ H in can recording according to test and calculate
1and circular slanting otch formation thermal expansion cone spacer is set on cone spacer, the axial thermal expansion that assembly angular contact ball bearing is externally produced in just being eliminated by thermal expansion cone spacer under rotating speed S is poor.
With should run into two inner rings relative to fixing and two outer rings are rotated under described S time, the outer internal axial thermal expansion difference Δ H that can record according to test and calculate
2and circular slanting otch formation thermal expansion outer ring spacer is set on outer ring spacer, the axial thermal expansion that assembly angular contact ball bearing just can eliminate outer internally generation by thermal expansion outer ring spacer under rotating speed S is poor.
No matter 2 is arrange circular slanting otch or arrange circular slanting otch on cone spacer on outer ring spacer, consequent thermal expansion cone spacer or thermal expansion outer ring spacer all can not reduce the integral rigidity of assembly angular contact ball bearing, because the thermal expansion that assembly angular contact ball bearing produces under rotating speed S can be realized by the identical of circular slanting otch, improve running accuracy and the working life of assembly angular contact ball bearing.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch thermal expansion cone spacer in back to back angle contact ball bearing being arranged circular slanting otch.
In Fig. 1: 1-outer ring; 2-inner ring; 3-retainer; 4-contacts ball; 5-thermal expansion cone spacer, 5.1-circular slanting otch; 6-outer ring spacer.
Embodiment
The present invention be a kind of eliminate assembly angular contact ball bearing at a high speed produce the method for axial thermal expansion, the method forms thermal expansion cone spacer by arranging circular slanting otch on cone spacer, or arranging circular slanting otch on outer ring spacer forms thermal expansion outer ring spacer, circular slanting otch can eliminate the axial thermal expansion that assembly angular contact ball bearing produces at a high speed, thermal expansion cone spacer or thermal expansion outer ring spacer all can not reduce the integral rigidity of assembly angular contact ball bearing, improve running accuracy and the working life of assembly angular contact ball bearing.
By back-to-back for the angular contact ball bearing of two same models or be set to one group face-to-face and configure outer ring spacer between two outer rings, the compound mode configuring cone spacer between two inner rings is called assembly angular contact ball bearing, the external diameter of cone spacer and internal diameter mate with the external diameter of inner ring and internal diameter respectively, the external diameter of outer ring spacer and internal diameter mate with the external diameter of outer ring and internal diameter respectively, the width of the width=outer ring spacer of cone spacer, setting outer ring spacer is made by identical metallic material with cone spacer, setting assembly angular contact ball bearing rotating speed is at a high speed S, cone spacer is recorded and the axial thermal expansion amount of outer ring spacer under different conditions exists following difference through test:
1. composition graphs 1, when relative to fixing, two inner rings rotate under described S in two outer rings, the axial thermal expansion amount of the axial thermal expansion amount > outer ring spacer of cone spacer, the axial thermal expansion amount=Δ H of the axial thermal expansion amount-outer ring spacer of setting cone spacer
1, Δ H
1be called that the interior external axial thermal expansion that cone spacer produces relative to outer ring spacer is poor, record Δ H through test
1=0.08 ~ 0.1 ㎜;
2. when two inner rings relative to fixing, rotate under described S by two outer rings, the axial thermal expansion amount of the axial thermal expansion amount > cone spacer of outer ring spacer, the axial thermal expansion amount=Δ H of the axial thermal expansion amount-cone spacer of setting outer ring spacer
2, Δ H
2be called that the outer internal axial thermal expansion that outer ring spacer produces relative to cone spacer is poor.
Above-mentioned Δ H
1≠ Δ H
2, the unit of measurement Shi ㎜ of described thermal expansion amount.Attention: test conditions is different, the model of angular contact ball bearing is different, outer ring spacer is different with the making material of cone spacer, the ambient temperature of assembly angular contact ball bearing is different, the not equal factors of rotating speed of assembly angular contact ball bearing, all can cause the axial thermal expansion amount of cone spacer or the axial thermal expansion amount of outer ring spacer is not identical, described difference 1. and is 2. necessary being, although Δ H
1with Δ H
2by above-mentioned test conditions to limit its result of calculation not identical, but
Δ H
1with Δ H
2necessarily calculate by test.
Fig. 1 is the structural representation sketch thermal expansion cone spacer in back to back angle contact ball bearing being arranged circular slanting otch, back-to-backly refer to that the flush end of two outer ring 1 internal diameters comes interval by outer ring spacer 6, in like manner refer to that the splay end of two outer ring 1 internal diameters comes interval by outer ring spacer 6 face-to-face, contact ball 4 is loaded the semicircle raceway of inner ring 2 and outer ring 1 from described splay end by retainer 3.The circular slanting otch of the structural representation sketch and outer ring spacer that the thermal expansion outer ring spacer in back to back angle contact ball bearing are arranged circular slanting otch can with reference to shown in figure 1.
Can explain the present invention in more detail by the following examples, the present invention is not limited to the following examples, discloses object of the present invention and is intended to protect all changes and improvements in the scope of the invention.Method of the present invention is as follows:
To cut sth. askew a circular slanting otch 5.1 by cone spacer or the axial direction of outer ring spacer, circular slanting otch 5.1 can be obtained by Linear cut mode.The width of the circular slanting otch (5.1) that cone spacer is cut sth. askew equals Δ H
1, the width of the circular slanting otch (5.1) that outer ring spacer is cut sth. askew equals Δ H
2, the width of Linear cut can realize Δ H
1or Δ H
2as long as other cutting mode can realize Δ H
1or Δ H
2.Circular slanting otch 5.1 is with cone spacer or the central axis of outer ring spacer is α °, and the Angle ambiguity of described α °, at 83 ~ 87 °, is good with α °=85 °.Circular slanting otch 5.1 is in 1/2 place of cone spacer width or outer ring spacer width by the position of described central axis, after circular slanting otch 5.1: the cone spacer of cutting sth. askew is divided into two symmetry equivalent and thermal expansion cone spacers 5 of the expansion gap had, the outer ring spacer of cutting sth. askew is divided into two symmetry equivalent and thermal expansion outer ring spacers of the expansion gap had.
When run into above-mentioned 1. time, be placed between two inner rings 2 by described thermal expansion cone spacer 5, and be placed in by outer ring spacer 6 between two outer rings 1, under described S, can to eliminate described interior external axial thermal expansion poor for described thermal expansion cone spacer 5.
Specifically, when run into two outer rings relative to fixing and two inner rings rotate under described S time, external axial thermal expansion difference Δ H in can recording according to test and calculate
1and circular slanting otch formation thermal expansion cone spacer is set on cone spacer, the axial thermal expansion that assembly angular contact ball bearing is externally produced in just being eliminated by thermal expansion cone spacer under rotating speed S is poor.
When run into above-mentioned 2. time, be placed between two outer rings 1 by described thermal expansion outer ring spacer, and be placed in by cone spacer between two inner rings 2, under described S, described thermal expansion outer ring spacer can disappear except as noted internally, and axial thermal expansion is poor.
With should run into two inner rings relative to fixing and two outer rings are rotated under described S time, the outer internal axial thermal expansion difference Δ H that can record according to test and calculate
2and circular slanting otch formation thermal expansion outer ring spacer is set on outer ring spacer, the axial thermal expansion that assembly angular contact ball bearing just can eliminate outer internally generation by thermal expansion outer ring spacer under rotating speed S is poor.
The present invention is intended to protect all any change belonging to all embodiments in the scope of the invention and improvement.
Claims (2)
1. one kind eliminate assembly angular contact ball bearing at a high speed produce the method for axial thermal expansion, by back-to-back for the angular contact ball bearing of two same models or be set to one group face-to-face and configure outer ring spacer between two outer rings, the compound mode configuring cone spacer between two inner rings is called assembly angular contact ball bearing, the external diameter of cone spacer and internal diameter mate with the external diameter of inner ring and internal diameter respectively, the external diameter of outer ring spacer and internal diameter mate with the external diameter of outer ring and internal diameter respectively, the width of the width=outer ring spacer of cone spacer, setting outer ring spacer is made by identical metallic material with cone spacer, setting assembly angular contact ball bearing rotating speed is at a high speed S, cone spacer is recorded and the axial thermal expansion amount of outer ring spacer under different conditions exists following difference through test:
1. when relative to fixing, two inner rings rotate under described S in two outer rings, the axial thermal expansion amount of the axial thermal expansion amount > outer ring spacer of cone spacer, the axial thermal expansion amount=Δ H of the axial thermal expansion amount-outer ring spacer of setting cone spacer
1, Δ H
1be called that the interior external axial thermal expansion that cone spacer produces relative to outer ring spacer is poor;
2. when two inner rings relative to fixing, rotate under described S by two outer rings, the axial thermal expansion amount of the axial thermal expansion amount > cone spacer of outer ring spacer, the axial thermal expansion amount=Δ H of the axial thermal expansion amount-cone spacer of setting outer ring spacer
2, Δ H
2be called that the outer internal axial thermal expansion that outer ring spacer produces relative to cone spacer is poor;
It is characterized in that:
To cut sth. askew a circular slanting otch (5.1) by cone spacer or the axial direction of outer ring spacer, the width of the circular slanting otch (5.1) that cone spacer is cut sth. askew equals Δ H
1, the width of the circular slanting otch (5.1) that outer ring spacer is cut sth. askew equals Δ H
2, circular slanting otch (5.1) is with cone spacer or the central axis of outer ring spacer is α °, circular slanting otch (5.1) is in 1/2 place of cone spacer width or outer ring spacer width by the position of described central axis, after circular slanting otch: the cone spacer of cutting sth. askew is divided into two symmetry equivalent and thermal expansion cone spacers (5) of the expansion gap had, the outer ring spacer of cutting sth. askew is divided into two symmetry equivalent and thermal expansion outer ring spacers of the expansion gap had, when run into above-mentioned 1. time, described thermal expansion cone spacer (5) is placed between two inner rings (2), and outer ring spacer (6) is placed between two outer rings (1), under described S described thermal expansion cone spacer (5) can to eliminate described interior external axial thermal expansion poor, when run into above-mentioned 2. time, be placed between two outer rings (1) by described thermal expansion outer ring spacer, and be placed in by cone spacer between two inner rings (2), under described S, described thermal expansion outer ring spacer can disappear except as noted internally, and axial thermal expansion is poor.
2. according to claim 1 a kind of eliminate assembly angular contact ball bearing at a high speed produce the method for axial thermal expansion, it is characterized in that: the Angle ambiguity of described α ° is at 83 ~ 87 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090641.6A CN103206461B (en) | 2013-03-21 | 2013-03-21 | Method for eliminating axial thermal expansion generated by high-speed matched angular contact ball bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090641.6A CN103206461B (en) | 2013-03-21 | 2013-03-21 | Method for eliminating axial thermal expansion generated by high-speed matched angular contact ball bearing |
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| CN103206461A CN103206461A (en) | 2013-07-17 |
| CN103206461B true CN103206461B (en) | 2015-06-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758870A (en) * | 2014-01-02 | 2014-04-30 | 上海大学 | Novel preload regulation device for high-speed motorized spindle bearing |
| CN113294432B (en) * | 2021-04-27 | 2022-09-02 | 洛阳轴承研究所有限公司 | Thrust bearing group |
| CN113294431B (en) * | 2021-04-27 | 2022-08-30 | 洛阳轴承研究所有限公司 | Thrust bearing group of series connection matched stack |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187106A (en) * | 2008-10-22 | 2011-09-14 | Ntn株式会社 | Rolling bearing and rotating-shaft support structure |
| CN102414461A (en) * | 2009-02-24 | 2012-04-11 | 戴森技术有限公司 | Rotor assembly |
| CN102778123A (en) * | 2011-05-12 | 2012-11-14 | 中冶北方工程技术有限公司 | Method for preventing fireproof material of rotary kiln from falling down |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60241519A (en) * | 1984-05-16 | 1985-11-30 | Nippon Seiko Kk | Parallel combination bearing structure |
| JPH11108055A (en) * | 1997-10-06 | 1999-04-20 | Koyo Seiko Co Ltd | Rolling bearing device |
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2013
- 2013-03-21 CN CN201310090641.6A patent/CN103206461B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187106A (en) * | 2008-10-22 | 2011-09-14 | Ntn株式会社 | Rolling bearing and rotating-shaft support structure |
| CN102414461A (en) * | 2009-02-24 | 2012-04-11 | 戴森技术有限公司 | Rotor assembly |
| CN102778123A (en) * | 2011-05-12 | 2012-11-14 | 中冶北方工程技术有限公司 | Method for preventing fireproof material of rotary kiln from falling down |
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Effective date of registration: 20180511 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: Luoyang Bearing Research Institute Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: Zhouyan Science and Technology Co., Ltd., Luoyang |