CN103206461A - 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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- CN103206461A CN103206461A CN2013100906416A CN201310090641A CN103206461A CN 103206461 A CN103206461 A CN 103206461A CN 2013100906416 A CN2013100906416 A CN 2013100906416A CN 201310090641 A CN201310090641 A CN 201310090641A CN 103206461 A CN103206461 A CN 103206461A
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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 assembly angular contact ball bearing method of the axial thermal expansion that produces at a high speed of eliminating.
Background technique
The assembly angular contact ball bearing refers to: the angular contact ball bearing of two same models is back-to-back or be made as one group and dispose cone spacer disposing between two outer rings between outer ring spacer, two inner rings face-to-face, the external diameter of cone spacer and internal diameter respectively with the external diameter of inner ring and internal diameter coupling, the external diameter of outer ring spacer and internal diameter respectively with the external diameter of outer ring and internal diameter coupling, the width of the width=outer ring spacer of cone spacer.
The assembly angular contact ball bearing carries out work usually under certain pretightening force state, like this by the rigidity setting of cone spacer and outer ring spacer, can improve the running accuracy of assembly angular contact ball bearing and increase its rigidity.
Generally, two outer rings in the assembly angular contact ball bearing are mounted on the bearing support and are non-rotary, two inner rings then are installed in the rotating shaft and by rotating shaft and drive its rotation, cone spacer and outer ring spacer play two inner rings of restriction and two outer rings produce axial displacement, but in real work by observing and test: rotating shaft can cause that when running up the temperature of assembly angular contact ball bearing raises, specific to inner ring, temperature lift-off value on outer ring and the bearing support is inequality, this temperature lift-off value that just causes cone spacer and outer ring spacer also is inequality, because cone spacer and outer ring spacer width when mounted equate, the temperature rising causes the axial thermal expansion amount of the axial thermal expansion amount ≠ outer ring spacer of cone spacer, the difference of more big its axial thermal expansion amount of the difference of the temperature of cone spacer and outer ring spacer is just more big, and this just badly influences running accuracy and the working life of assembly angular contact ball bearing.
Report, change cone spacer or outer ring spacer into spring ring to solve the axial thermal expansion that the assembly angular contact ball bearing is produced when running up, no matter but be that cone spacer changes spring ring into or outer ring spacer changes spring ring into, but can reduce the rigidity of assembly angular contact ball bearing.
Neither reduce the rigidity of assembly angular contact ball bearing and can eliminate the method for the axial thermal expansion that the assembly angular contact ball bearing produces when running up, do not see relevant report so far.
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Summary of the invention
For addressing the above problem, the invention provides a kind of assembly angular contact ball bearing method of the axial thermal expansion that produces at a high speed of eliminating, this method forms the thermal expansion cone spacer by annular angular cut is set at cone spacer, or at outer ring spacer annular angular cut being set forms the thermal expansion outer ring spacer, the annular angular cut can be eliminated the axial thermal expansion that the assembly angular contact ball bearing produces at a high speed, thermal expansion cone spacer or thermal expansion outer ring spacer can not reduce the integral rigidity of assembly angular contact ball bearing, have improved 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 assembly angular contact ball bearing method of the axial thermal expansion that produces at a high speed of eliminating, the angular contact ball bearing of two same models is back-to-back or be made as one group and dispose outer ring spacer between two outer rings face-to-face, the compound mode of configuration cone spacer is called the assembly angular contact ball bearing between two inner rings, the external diameter of cone spacer and internal diameter respectively with the external diameter of inner ring and internal diameter coupling, the external diameter of outer ring spacer and internal diameter respectively with the external diameter of outer ring and internal diameter coupling, 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 at a high speed is S, records cone spacer and there is following difference in the axial thermal expansion amount of outer ring spacer under different conditions through test:
1. when two outer ring relative fixed and two inner rings when rotating under described S, the axial thermal expansion amount of the axial thermal expansion amount＞outer ring spacer of cone spacer is set the axial thermal expansion amount=Δ H of the axial thermal expansion amount-outer ring spacer of cone spacer
1, Δ H
1The interior external axial thermal expansion that is called the relative outer ring spacer generation of cone spacer is poor;
2. when two inner ring relative fixed and two outer rings when rotating under described S, the axial thermal expansion amount of the axial thermal expansion amount＞cone spacer of outer ring spacer is set the axial thermal expansion amount=Δ H of the axial thermal expansion amount-cone spacer of outer ring spacer
2, Δ H
2The outer internal axial thermal expansion that is called the relative cone spacer generation of outer ring spacer is poor;
Feature of the present invention is:
By cone spacer or the axial direction of the outer ring spacer annular angular cut of cutting sth. askew, the width of annular angular cut or equal Δ H
1Or equal Δ H
2The annular angular cut is α ° with cone spacer or the central axis of outer ring spacer, the annular angular cut is in cone spacer width or 1/2 place of outer ring spacer width by the position of described central axis, through behind the annular angular cut: the cone spacer of cutting sth. askew is divided into the thermal expansion cone spacer of two symmetry equivalent and expansion gaps of having, the outer ring spacer of cutting sth. askew is divided into the thermal expansion outer ring spacer of two symmetry equivalent and expansion gaps of having, above-mentioned 1. the time when running into, described thermal expansion cone spacer is placed between two inner rings, and outer ring spacer is placed between two outer rings, described thermal expansion cone spacer can eliminate in described that externally axial thermal expansion is poor under described S; Above-mentioned 2. the time when running into, described thermal expansion outer ring spacer is placed between two outer rings, and cone spacer is placed between two inner rings, described thermal expansion outer ring spacer can eliminate outside described that internally axial thermal expansion is poor under described S.
α described above ° angle control is at 83～87 °.
Owing to adopt technological scheme as mentioned above, the present invention to produce following solution effect:
When 1, two inner rings rotate under described S when running into two outer ring relative fixed, the interior external axial thermal expansion difference Δ H that can record and calculate according to test
1And at cone spacer annular angular cut is set and forms the thermal expansion cone spacer, the axial thermal expansion of external generation was poor in the assembly angular contact ball bearing just can be eliminated by the thermal expansion cone spacer under rotating speed S.
With running into two inner ring relative fixed and two outer rings when under described S, rotating, the outer internal axial thermal expansion difference Δ H that can record and calculate according to test
2And at outer ring spacer annular angular cut is set and forms the thermal expansion outer ring spacer, the axial thermal expansion of internal generation was poor outside the assembly angular contact ball bearing just can be eliminated by the thermal expansion outer ring spacer under rotating speed S.
No matter 2 is annular angular cut to be set or at outer ring spacer annular angular cut to be set at cone spacer, consequent thermal expansion cone spacer or thermal expansion outer ring spacer can not reduce the integral rigidity of assembly angular contact ball bearing, because the thermal expansion that the assembly angular contact ball bearing produces under rotating speed S can by annular angular cut coincide realize, improved running accuracy and the working life of assembly angular contact ball bearing.
Description of drawings
Fig. 1 is the structural representation sketch that the thermal expansion cone spacer in the back to back angle contact ball bearing arranges annular angular cut.
Among Fig. 1: the 1-outer ring; The 2-inner ring; The 3-retainer; 4-contacts ball; 5-thermal expansion cone spacer, 5.1-annular angular cut; The 6-outer ring spacer.
Embodiment
The present invention is a kind of assembly angular contact ball bearing method of the axial thermal expansion that produces at a high speed of eliminating, this method forms the thermal expansion cone spacer by annular angular cut is set at cone spacer, or at outer ring spacer annular angular cut being set forms the thermal expansion outer ring spacer, the annular angular cut can be eliminated the axial thermal expansion that the assembly angular contact ball bearing produces at a high speed, thermal expansion cone spacer or thermal expansion outer ring spacer can not reduce the integral rigidity of assembly angular contact ball bearing, have improved running accuracy and the working life of assembly angular contact ball bearing.
The angular contact ball bearing of two same models is back-to-back or be made as one group and dispose outer ring spacer between two outer rings face-to-face, the compound mode of configuration cone spacer is called the assembly angular contact ball bearing between two inner rings, the external diameter of cone spacer and internal diameter respectively with the external diameter of inner ring and internal diameter coupling, the external diameter of outer ring spacer and internal diameter respectively with the external diameter of outer ring and internal diameter coupling, 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 at a high speed is S, records cone spacer and there is following difference in the axial thermal expansion amount of outer ring spacer under different conditions through test:
1. in conjunction with Fig. 1, when two outer ring relative fixed and two inner rings when rotating under described S, the axial thermal expansion amount of the axial thermal expansion amount＞outer ring spacer of cone spacer is set the axial thermal expansion amount=Δ H of the axial thermal expansion amount-outer ring spacer of cone spacer
1, Δ H
1The interior external axial thermal expansion that is called the relative outer ring spacer generation of cone spacer is poor, records Δ H through test
1=0.08～0.1 ㎜;
2. when two inner ring relative fixed and two outer rings when rotating under described S, the axial thermal expansion amount of the axial thermal expansion amount＞cone spacer of outer ring spacer is set the axial thermal expansion amount=Δ H of the axial thermal expansion amount-cone spacer of outer ring spacer
2, Δ H
2The outer internal axial thermal expansion that is called the relative cone spacer generation of outer ring spacer is poor.
Above-mentioned Δ H
1≠ Δ H
2, the unit of measurement Shi ㎜ of described thermal expansion amount.Attention: test conditions difference, the model difference of angular contact ball bearing, the making material of outer ring spacer and cone spacer is different, the ambient temperature difference of assembly angular contact ball bearing, the not equal many factors of the 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 inequality, 1. and described difference 2. be necessary being, though Δ H
1With Δ H
2Be subjected to above-mentioned test conditions to limit its result of calculation inequality, but
Δ H
1With Δ H
2Be one to calculate by test surely.
Fig. 1 is the structural representation sketch that the thermal expansion cone spacer in the back to back angle contact ball bearing arranges annular angular cut, the back-to-back flush end of two outer rings, 1 internal diameter that refers to is by outer ring spacer 6 intervals, the splay end that in like manner refers to two outer rings, 1 internal diameter face-to-face by outer ring spacer 6 at interval, contact ball 4 by retainer 3 from described splay end is packed the semicircle raceway of inner ring 2 and outer ring 1 into.The annular angular cut that the structural representation sketch of annular angular cut and outer ring spacer are set on the thermal expansion outer ring spacer in the back to back angle contact ball bearing can be 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 purpose 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: get final product
By cone spacer or the axial direction of the outer ring spacer annular angular cut 5.1 of cutting sth. askew, annular angular cut 5.1 can obtain by the line cutting mode.The annular angular cut 5.1 width or equal Δ H
1Or equal Δ H
2, the width of line cutting can be realized Δ H
1Or Δ H
2As long as other cutting mode can be realized Δ H
1Or Δ H
2Get final product.Annular angular cut 5.1 is α ° with cone spacer or the central axis of outer ring spacer, and described α ° angle control is good at 83～87 ° with α °=85 °.Annular angular cut 5.1 is in cone spacer width or 1/2 place of outer ring spacer width by the position of described central axis, through annular angular cut 5.1 backs: the cone spacer of cutting sth. askew is divided into the thermal expansion cone spacer 5 of two symmetry equivalent and expansion gaps of having, and the outer ring spacer of cutting sth. askew is divided into the thermal expansion outer ring spacer of two symmetry equivalent and expansion gaps of having.
Above-mentioned 1. the time when running into, 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, described thermal expansion cone spacer 5 can eliminate in described that externally axial thermal expansion is poor under described S.
Definite says, when two inner rings rotate under described S when running into two outer ring relative fixed, and the interior external axial thermal expansion difference Δ H that can record and calculate according to test
1And at cone spacer annular angular cut is set and forms the thermal expansion cone spacer, the axial thermal expansion of external generation was poor in the assembly angular contact ball bearing just can be eliminated by the thermal expansion cone spacer under rotating speed S.
Above-mentioned 2. the time when running into, described thermal expansion outer ring spacer is placed between two outer rings 1, and cone spacer is placed between two inner rings 2, described thermal expansion outer ring spacer can eliminate outside described that internally axial thermal expansion is poor under described S.
With running into two inner ring relative fixed and two outer rings when under described S, rotating, the outer internal axial thermal expansion difference Δ H that can record and calculate according to test
2And at outer ring spacer annular angular cut is set and forms the thermal expansion outer ring spacer, the axial thermal expansion of internal generation was poor outside the assembly angular contact ball bearing just can be eliminated by the thermal expansion outer ring spacer under rotating speed S.
The present invention is intended to protect all to belong to any variation and the improvement of all embodiments in the scope of the invention.
Claims (2)
1. eliminate the assembly angular contact ball bearing method of the axial thermal expansion that produces at a high speed for one kind, the angular contact ball bearing of two same models is back-to-back or be made as one group and dispose outer ring spacer between two outer rings face-to-face, the compound mode of configuration cone spacer is called the assembly angular contact ball bearing between two inner rings, the external diameter of cone spacer and internal diameter respectively with the external diameter of inner ring and internal diameter coupling, the external diameter of outer ring spacer and internal diameter respectively with the external diameter of outer ring and internal diameter coupling, 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 at a high speed is S, records cone spacer and there is following difference in the axial thermal expansion amount of outer ring spacer under different conditions through test:
1. when two outer ring relative fixed and two inner rings when rotating under described S, the axial thermal expansion amount of the axial thermal expansion amount＞outer ring spacer of cone spacer is set the axial thermal expansion amount=Δ H of the axial thermal expansion amount-outer ring spacer of cone spacer
1, Δ H
1The interior external axial thermal expansion that is called the relative outer ring spacer generation of cone spacer is poor;
2. when two inner ring relative fixed and two outer rings when rotating under described S, the axial thermal expansion amount of the axial thermal expansion amount＞cone spacer of outer ring spacer is set the axial thermal expansion amount=Δ H of the axial thermal expansion amount-cone spacer of outer ring spacer
2, Δ H
2The outer internal axial thermal expansion that is called the relative cone spacer generation of outer ring spacer is poor;
It is characterized in that:
By cone spacer or the axial direction of the outer ring spacer annular angular cut (5.1) of cutting sth. askew, the width of annular angular cut (5.1) or equal Δ H
1Or equal Δ H
2Annular angular cut (5.1) is α ° with cone spacer or the central axis of outer ring spacer, annular angular cut (5.1) is in cone spacer width or 1/2 place of outer ring spacer width by the position of described central axis, through behind the annular angular cut: the cone spacer of cutting sth. askew is divided into the thermal expansion cone spacer (5) of two symmetry equivalent and expansion gaps of having, the outer ring spacer of cutting sth. askew is divided into the thermal expansion outer ring spacer of two symmetry equivalent and expansion gaps of having, above-mentioned 1. the time when running into, 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), described thermal expansion cone spacer (5) can eliminate in described that externally axial thermal expansion is poor under described S; Above-mentioned 2. the time when running into, described thermal expansion outer ring spacer is placed between two outer rings (1), and cone spacer is placed between two inner rings (2), described thermal expansion outer ring spacer can eliminate outside described that internally axial thermal expansion is poor under described S.
2. according to the described a kind of assembly angular contact ball bearing method of the axial thermal expansion that produces at a high speed of eliminating of claim 1, it is characterized in that: described α ° angle control 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206461A true CN103206461A (en) | 2013-07-17 |
| CN103206461B CN103206461B (en) | 2015-06-17 |
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|---|---|---|---|
| CN201310090641.6A Active 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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Cited By (3)
| 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 |
| CN113294432A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group |
| CN113294431A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group of series connection matched stack |
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| JPS60241519A (en) * | 1984-05-16 | 1985-11-30 | Nippon Seiko Kk | Parallel combination bearing structure |
| US20010046340A1 (en) * | 1997-10-06 | 2001-11-29 | Toshiaki Shimomura | Roller bearing device |
| 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 |
-
2013
- 2013-03-21 CN CN201310090641.6A patent/CN103206461B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60241519A (en) * | 1984-05-16 | 1985-11-30 | Nippon Seiko Kk | Parallel combination bearing structure |
| US20010046340A1 (en) * | 1997-10-06 | 2001-11-29 | Toshiaki Shimomura | Roller bearing device |
| 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 |
Cited By (5)
| 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 |
| CN113294432A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group |
| CN113294431A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group of series connection matched stack |
| 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 |
| CN113294432B (en) * | 2021-04-27 | 2022-09-02 | 洛阳轴承研究所有限公司 | Thrust bearing group |
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| Publication number | Publication date |
|---|---|
| CN103206461B (en) | 2015-06-17 |
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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 |