CN101922906B - Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings - Google Patents
Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings Download PDFInfo
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- CN101922906B CN101922906B CN2010102548879A CN201010254887A CN101922906B CN 101922906 B CN101922906 B CN 101922906B CN 2010102548879 A CN2010102548879 A CN 2010102548879A CN 201010254887 A CN201010254887 A CN 201010254887A CN 101922906 B CN101922906 B CN 101922906B
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Abstract
The invention discloses a method for measuring the axial clearance or the preload clearance of back-to-back angular contact ball bearings, which comprises the steps of firstly manufacturing an outer ring spacer bush (4), a gasket (1), an inner diameter load block (7) and a measurement system and then correcting measurement instruments, wherein the inner ring (2) of a bearing I is arranged on the gasket, the bearing I and a bearing II are arranged on the outer ring spacer bush back to back, the inner diameter load block is arranged in the inner ring (6) of the bearing II; and during the correction of instruments, one end of each of the two equilong levers, which is provided with a right-angle measuring head, extend into an inner ring space bush through each notch groove of the inner ring spacer bush. During the measurement, the inner diameter load block of a balance weight applies axial load to the bearing I and the bearing II, the two right-angle measuring heads respectively align to the center points A and B of the bearing I and the bearing II, wherein A-B=delta, if the delta is a negative value, the bearing I and the bearing II are in axial clearance, and if the delta is a positive value, the bearing I and the bearing II are in preload clearance. The invention has the advantages of simple operation, no complicated conversion for obtaining measurement result, visually readable values A and B, and no conversion and cumulative errors.
Description
Technical field
The invention belongs to the bearing measuring technical field, specially refer to a kind of back to back angle contact ball bearing end-play and the measuring method that preloads play.
Background technology
There is supporting end-play in angular contact ball bearing when design, only just can have end-play or preload play in angular contact ball bearing pairing and after installing, end-play or the size that preloads play depend on the regulated quantity of another angular contact ball bearing of pairing.
Angular contact ball bearing has the structural change of different slight parts, request for utilization according to user diagonal angle contact ball bearing, end-play when back-to-back (DB match type) can be provided (or claiming pre-play) or preload play (or claim preload), the large end face of the back-to-back angular contact ball bearing that is meant pairing is corresponding mutually, the angular contact ball bearing end-play of back-to-back pairing and preload the method for expressing of play referring to Fig. 1 and Fig. 2.
Fig. 1 is back-to-back when pairing end-play of being produced when the axial direction displacement of angular contact ball bearing, this end-play be defined as on the occasion of.
Angular contact ball bearing institute when axial direction is realized pretension produced and preloads play when Fig. 2 was back-to-back pairing, and this preloads poker gauge and is decided to be negative value or zero.
Back to back angle contact ball bearing end-play or to preload the play current measuring methods roughly as follows:
Use the high precision measuring instrument for projection of angular contact ball bearing and measure the protrusion amount of single cover angular contact ball bearing, and reconditioning protrusion amount, be scaled the end-play of back to back angle contact ball bearing or preload play according to the protrusion value of pairing back then the dorsal horn contact ball bearing.Whole process adopts indirect method to measure and convert, and its running program complexity, loaded down with trivial details and efficient is low is easy to generate cumulative errors.
Summary of the invention
In order better to satisfy back to back angle contact ball bearing end-play or to preload the measurement requirement of play, the present invention proposes a kind of back to back angle contact ball bearing end-play or preload the measuring method of play, utilize this measuring method can be accurately and directly measure the end-play of back to back angle contact ball bearing or preload play.
For achieving the above object, the present invention adopts following technical scheme:
Bearing I of the present invention and bearing I I all refer to the measured angle contact ball bearing, and the bearing I of pairing has identical model and physical dimension with bearing I I.
Described back to back angle contact ball bearing end-play or preload the measuring method of play, make outer ring spacer, packing ring, internal diameter load piece and a measuring system earlier, the internal diameter of described outer ring spacer equates with the outer ring internal diameter of bearing I or bearing I I, the external diameter of outer ring spacer equates with the outer ring external diameter of bearing I or bearing I I, and at the gap slot that radially has two symmetries of outer ring spacer; The external diameter of described packing ring equates that with the inner ring external diameter of bearing I or bearing I I the internal diameter of packing ring equates with the inner ring internal diameter of bearing I or bearing I I; Described internal diameter load piece has the boss shape, the maximum outside diameter of internal diameter load piece equates with the inner ring external diameter of bearing I I, the inner ring internal diameter of the external diameter≤bearing I I at internal diameter load piece boss place, half of the width≤bearing I I width at internal diameter load piece boss place, internal diameter load piece has different counterweights according to the model of bearing I or bearing I I; Described measuring system is by the relative hinged point of both direction, two isometric levers and a measurement instrument constitute, the mid point of two isometric levers is separately fixed on separately the hinged point, one end of two isometric levers is provided with two opposite right angle gauge heads of direction, connect measurement instrument between the other end of two isometric levers, distance from the right angle gauge head to hinged point equals hinged distance to the measurement instrument union end, make two isometric levers form two bascules by hinged point, the spacing between two isometric levers is as the criterion with two symmetric windows grooves conveniently putting into the outer ring spacer; Earlier packing ring is lain on the measuring table before measuring, the inner ring of bearing I is placed on the packing ring, on the outer ring of bearing I, place the outer ring spacer then, outer ring with bearing I I is placed on the spacer of outer ring again, the outer ring large end face of attention bearing I and the outer ring large end face of bearing I I are back-to-back by the outer ring spacer, and the internal diameter load piece with counterweight is placed in the inner ring of bearing I I at last; Adjust measuring system two isometric levers are parallel to each other, the measurement instrument pointer of this moment is calibrated to zero, and two gap slots by the outer ring spacer extend into the end that two isometric levers are provided with the right angle gauge head in the spacer of outer ring; During measurement, the internal diameter load piece of counterweight applies axial load to bearing I and bearing I I, the inner ring radial width central point A of two right angle gauge head alignment bearings I of elder generation and bearing I I, this moment, central point A place just demonstrated an A value by measurement instrument, move the outer ring radial width central point B of two right angle gauge heads and alignment bearings I and bearing I I again, central point B place just demonstrates a B value by measurement instrument, calculate the poor of A value and B value, if the A value deducts the B value when equaling δ and δ and being negative value, show that bearing I and bearing I I are pre-play pairing, promptly the end-play of bearing I and bearing I I is δ; If A value deduct B value equal δ and δ on the occasion of the time, show bearing I and bearing I I for preloading pairing, promptly the play that preloads of bearing I and bearing I I is δ, it axially will implement pretension when matching use for bearing I and bearing I I; Measurement finishes in the counterweight amount of the end face mark measurement result of bearing I and bearing I I and internal diameter load piece.
Owing to adopted technical scheme as mentioned above, the present invention has following characteristics:
1. in the present invention, back-to-back measured angle contact ball bearing adopts the location that once is installed, and has eliminated owing to positioning error and to the influence that measurement result produces, has guaranteed the precision of measuring.
2. the present invention is a kind of direct measuring method, has characteristics simple to operate, and measurement result does not need complicated conversion, and A value and B value are intuitively readable, and does not have conversion and cumulative errors.
3. measuring method of the present invention can also be used for the measurement of paired deep groove ball bearing.
Description of drawings
The end-play synoptic diagram of angular contact ball bearing when Fig. 1 is back-to-back the pairing;
Fig. 2 be back-to-back when pairing angular contact ball bearing preload the play synoptic diagram;
Fig. 3 is the installation site synoptic diagram of the present invention when being used for the back to back angle contact ball bearing and measuring.
In Fig. 3: the 1-packing ring; The inner ring of 2-bearing I; The outer ring of 3-bearing I; 4-outer ring spacer; The outer ring of 5-bearing I I; The inner ring of 6-bearing I I; 7-internal diameter load piece.
Embodiment
In conjunction with Fig. 3, the present invention will make outer ring spacer 4, packing ring 1, internal diameter load piece 7 and a measuring system earlier before measurement.
The internal diameter of outer ring spacer 4 equates with the outer ring internal diameter of bearing I or bearing I I, and the external diameter of outer ring spacer 4 equates with the outer ring external diameter of bearing I or bearing I I, and at the gap slot that radially has two symmetries of outer ring spacer 4.Outer ring spacer 4 must be through thermal treatment, hardness after the thermal treatment reaches HRC60-65, secondly need carry out precise finiss to outer ring spacer 4, parallel error with the both ends of the surface that guarantee outer ring spacer 4 is not more than 1 μ m, and the gap slot of last outer ring spacer 4 is wanted can be smoothly by two straight parallel angular measurement heads in the measuring system.
The external diameter of packing ring 1 equates that with the inner ring external diameter of bearing I or bearing I I the internal diameter of packing ring 1 equates with the inner ring internal diameter of bearing I or bearing I I.Secondly packing ring 1 plays measurement and positioning, and packing ring 1 must be through thermal treatment, and the hardness after the thermal treatment reaches HRC60-65, need carry out precise finiss to packing ring 1, is not more than 1 μ m with the parallel error of the both ends of the surface that guarantee packing ring 1.
Internal diameter load piece 7 has the boss shape, the maximum outside diameter of internal diameter load piece 7 equates with the inner ring external diameter of bearing I I, the inner ring internal diameter of the external diameter≤bearing I I at internal diameter load piece 7 boss places, half of the width≤bearing I I width at internal diameter load piece 7 boss places, internal diameter load piece has different counterweights according to the model of bearing I or bearing I I, such as: in outside dimension＜50mm of bearing I or bearing I I, its internal diameter load piece 7 gross weights are 24.5N; Outside dimension is between 50-120mm, and its internal diameter load piece 7 gross weights are 49N; Outside dimension is between 120-200mm, and its internal diameter load piece 7 gross weights are 98N; Outside dimension＞200mm, its internal diameter load piece 7 gross weights are 196N.The counterweight mode of above-mentioned internal diameter load piece does not have the standard effect, the counterweight amount of internal diameter load piece is preferably decided according to user's demand, because different counterweights is different to measurement result, the counterweight mode of internal diameter load piece is only for reference among the present invention, but this does not influence concrete enforcement of the present invention.
Measuring system is showed by Fig. 3, measuring system is by the relative hinged point of both direction, two isometric levers and a measurement instrument constitute, the mid point of two isometric levers is separately fixed on separately the hinged point, one end of two isometric levers is provided with two opposite right angle gauge heads of direction, connect measurement instrument between the other end of two isometric levers, distance from the right angle gauge head to hinged point equals hinged distance to the measurement instrument union end, make two isometric levers form two bascules by hinged point, the spacing between two isometric levers is as the criterion with two symmetric windows grooves conveniently putting into the outer ring spacer.The hinged point that is oppositely arranged can be realized by the inside groove of U type piece, the interior well width of U type piece and the width of outer ring spacer 4 coupling get final product, also just equal to hold measuring system so hold U type piece, so measuring system can arbitrarily be inserted and measure according to the gap slot locality of outer ring spacer 4.
Earlier packing ring 1 is lain on the measuring table before measuring, the inner ring 2 of bearing I is placed on the packing ring 1, on the outer ring 3 of bearing I, place outer ring spacer 4 then, outer ring 5 with bearing I I is placed on the outer ring spacer 4 again, the outer ring large end face of attention bearing I and the outer ring large end face of bearing I I are back-to-back by the outer ring spacer, and the internal diameter load piece 7 with counterweight is placed in the inner ring 6 of bearing I I at last.In this process, bearing I and bearing I I have adopted the locator meams that once is installed, and can eliminate owing to positioning error and to the influence that measurement result produces, guarantee the precision of measuring.
Adjust measuring system two isometric levers are parallel to each other, the measurement instrument pointer of this moment is calibrated to zero, and two gap slots by outer ring spacer 4 extend into the end that two isometric levers are provided with the right angle gauge head in the spacer of outer ring.Two isometric levers require to have favorable rigidity, the length difference of two isometric levers otherwise greater than ± 0.1mm, otherwise cause the systematic measurement error of measuring system easily.In addition, gauge head will in time be changed if produce wearing and tearing in the end of two right angle gauge heads.
During measurement, the 7 pairs of bearing I of internal diameter load piece and the bearing I I of counterweight apply axial load, the inner ring radial width central point A of two right angle gauge head alignment bearings I of elder generation and bearing I I, this moment, central point A place just demonstrated an A value by measurement instrument, move the outer ring radial width central point B of two right angle gauge heads and alignment bearings I and bearing I I again, central point B place just demonstrates a B value by measurement instrument, calculates the poor of A value and B value.
If A value deducts the B value when equaling δ and δ and being negative value, show that bearing I and bearing I I are that pre-play matches, promptly the end-play of bearing I and bearing I I is δ.
Equal δ and δ for when (comprising δ=0) if A value deducts B value, show bearing I and bearing I I for preloading pairing, promptly the play that preloads of bearing I and bearing I I is δ, and it axially will implement pretension when matching use for bearing I and bearing I I.
Need to prove: in measuring system, because two isometric levers connect supporting by two hinged points respectively and have formed two bascules, according to the bascule principle, like this δ that is calculated at A point and B point measurement or on the occasion of with or be negative value, thereby on the measurement instrument that the other end connected of two bascules then corresponding be negative value or on the occasion of.Find out thus: above-mentioned measuring process is a kind of direct measuring method, has characteristics simple to operate, and measurement result does not need complicated conversion, and A value and B value are intuitively readable, and does not have conversion and cumulative errors.
Measurement finishes in the counterweight amount of the end face mark measurement result of bearing I and bearing I I and internal diameter load piece, so that reference during mounted in pairing mode.
Measuring method of the present invention can also be used for the measurement of paired deep groove ball bearing.
Claims (1)
1. a back to back angle contact ball bearing end-play or preload the measuring method of play, bearing I and bearing I I all refer to the measured angle contact ball bearing, and the bearing I of pairing has identical model and physical dimension with bearing I I, it is characterized in that: make outer ring spacer (4) earlier, packing ring (1), internal diameter load piece (7) and a measuring system, the internal diameter of described outer ring spacer (4) equates with the outer ring internal diameter of bearing I or bearing I I, the external diameter of outer ring spacer (4) equates with the outer ring external diameter of bearing I or bearing I I, and at the gap slot that radially has two symmetries of outer ring spacer (4); The external diameter of described packing ring (1) equates that with the inner ring external diameter of bearing I or bearing I I the internal diameter of packing ring (1) equates with the inner ring internal diameter of bearing I or bearing I I; Described internal diameter load piece (7) has the boss shape, the maximum outside diameter of internal diameter load piece (7) equates with inner ring (2) external diameter of bearing I I, inner ring (6) internal diameter of the external diameter≤bearing I I at internal diameter load piece (7) boss place, half of the width≤bearing I I width at internal diameter load piece (7) boss place, internal diameter load piece (7) has different counterweights according to the model of bearing I or bearing I I; Described measuring system is by the relative hinged point of both direction, two isometric levers and a measurement instrument constitute, the mid point of two isometric levers is separately fixed on separately the hinged point, one end of two isometric levers is provided with two opposite right angle gauge heads of direction, connect measurement instrument between the other end of two isometric levers, distance from the right angle gauge head to hinged point equals hinged distance to the measurement instrument union end, make two isometric levers form two bascules by hinged point, the spacing between two isometric levers is as the criterion with two symmetric windows grooves conveniently putting into outer ring spacer (4); Earlier packing ring (1) is lain on the measuring table before measuring, the inner ring (2) of bearing I is placed on the packing ring (1), go up in the outer ring (3) of bearing I then and place outer ring spacer (4), outer ring (5) with bearing I I is placed on the outer ring spacer (4) again, the outer ring large end face of attention bearing I and the outer ring large end face of bearing I I are back-to-back by outer ring spacer (4), and the internal diameter load piece (7) with counterweight is placed in the inner ring (6) of bearing I I at last; Adjust measuring system two isometric levers are parallel to each other, the measurement instrument pointer of this moment is calibrated to zero, and two gap slots by outer ring spacer (4) extend into the end that two isometric levers are provided with the right angle gauge head in the spacer of outer ring; During measurement, the internal diameter load piece (7) of counterweight applies axial load to bearing I and bearing I I, the inner ring radial width central point A of two right angle gauge head alignment bearings I of elder generation and bearing I I, this moment, central point A place just demonstrated an A value by measurement instrument, move the outer ring radial width central point B of two right angle gauge heads and alignment bearings I and bearing I I again, central point B place just demonstrates a B value by measurement instrument, calculate the poor of A value and B value, if the A value deducts the B value when equaling δ and δ and being negative value, show that bearing I and bearing I I are pre-play pairing, promptly the end-play of bearing I and bearing I I is δ; If A value deduct B value equal δ and δ on the occasion of the time, show bearing I and bearing I I for preloading pairing, promptly the play that preloads of bearing I and bearing I I is δ, it axially will implement pretension when matching use for bearing I and bearing I I; Measurement finishes in the counterweight amount of the end face mark measurement result of bearing I and bearing I I and internal diameter load piece (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102548879A CN101922906B (en) | 2010-08-11 | 2010-08-11 | Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102548879A CN101922906B (en) | 2010-08-11 | 2010-08-11 | Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings |
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| Publication Number | Publication Date |
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| CN101922906A CN101922906A (en) | 2010-12-22 |
| CN101922906B true CN101922906B (en) | 2011-12-21 |
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| CN2010102548879A Expired - Fee Related CN101922906B (en) | 2010-08-11 | 2010-08-11 | Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230777B (en) * | 2011-04-07 | 2013-02-27 | 洛阳Lyc轴承有限公司 | Method for precisely measuring radial internal clearance of large-size bearing |
| CN105865395A (en) * | 2016-06-17 | 2016-08-17 | 中航工业哈尔滨轴承有限公司 | Axial clearance measuring method for large-sized bearing |
| CN106595427A (en) * | 2016-12-15 | 2017-04-26 | 中航工业哈尔滨轴承有限公司 | Inner ring assembling protrusion amount detection method for double inner ring double row angular contact ball bearing |
| CN109883698B (en) * | 2017-12-05 | 2020-12-04 | 洛阳轴承研究所有限公司 | Method and device for measuring pre-tightening force of control moment gyro shafting and adjusting method |
| CN216241889U (en) * | 2018-12-26 | 2022-04-08 | 格伦格朗·洛萨克 | Inner spacer ring of back-to-back angular contact ball bearing |
| CN109719493A (en) * | 2018-12-27 | 2019-05-07 | 西南技术物理研究所 | A kind of parts on shaft gap removing method |
| CN110388863A (en) * | 2019-08-26 | 2019-10-29 | 上海特安一凯轴承有限公司 | A kind of measuring instrument for projection of high precision large-sized angular contact ball bearing |
| CN111717371A (en) * | 2020-05-29 | 2020-09-29 | 四川航天燎原科技有限公司 | High-load low-friction gap-eliminating type aircraft steering engine |
| CN111964561A (en) * | 2020-08-19 | 2020-11-20 | 上海赛科石油化工有限责任公司 | Bearing axial clearance measuring method, measuring tool and bearing mounting method |
| CN112146877B (en) * | 2020-09-29 | 2023-03-21 | 中国航发动力股份有限公司 | Angular contact ball bearing pre-tightening spacer ring measuring device and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000018901A (en) * | 1998-07-03 | 2000-01-21 | Fukuyama Tekkosho:Kk | Glass plate passing position sensor |
| CN100533059C (en) * | 2007-11-30 | 2009-08-26 | 洛阳轴研科技股份有限公司 | Large-scale precision bearing axial clearance multifunctional automatic measuring instrument |
| CN101216283B (en) * | 2008-01-04 | 2010-06-02 | 洛阳轴研科技股份有限公司 | Large-sized precision bearing radial play multifunctional automatic measurement method |
| CN201311257Y (en) * | 2008-12-08 | 2009-09-16 | 哈尔滨轴承集团公司 | Detector for angular contact bearing convex value and concave value |
| CN201373723Y (en) * | 2009-02-11 | 2009-12-30 | 杭州人本大型轴承有限公司 | Convex amount measuring apparatus for bearing |
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Effective date of registration: 20180509 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: LUOYANG BEARING RESEARCH INSTITUTE Co.,Ltd. Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: LUOYANG BEARING SCIENCE & TECHNOLOGY Co.,Ltd. |
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