CN104154845A - Device and method for measuring axial play of paired bearings - Google Patents
Device and method for measuring axial play of paired bearings Download PDFInfo
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- CN104154845A CN104154845A CN201410431960.3A CN201410431960A CN104154845A CN 104154845 A CN104154845 A CN 104154845A CN 201410431960 A CN201410431960 A CN 201410431960A CN 104154845 A CN104154845 A CN 104154845A
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Abstract
The invention discloses a device and method for measuring axial play of paired bearings. The device comprises a base, a rotating shaft installed in the base, an upper thrust magnetic bearing, a lower thrust magnetic bearing and a thrust bearing supporting ring, wherein the upper thrust magnetic bearing and the lower thrust magnetic bearing are installed on the rotating shaft and are separated from each other through the thrust bearing supporting ring. The upper tail end of the rotating shaft extends out of the upper end face of the base, and the paired bearings are installed at the upper tail end of the rotating shaft. A bearing support is installed above the upper thrust magnetic bearing, a bearing retainer cup for installing the paired bearings in the bearing retainer cup is installed on the bearing support, and the outer edge of the bearing support is closely attached to the upper portion of the side wall of the base. A double-thread threaded rod and a threaded rod are installed on the two sides of the bearing support respectively. A shaft end check ring, a shaft end screw and a bearing gland are installed on the upper end face of the rotating shaft, wherein the shaft end check ring is locked and fixed to the upper end face of the rotating shaft through the shaft end screw, and the shaft end check ring is sleeved with the bearing gland. A gauge stand is fixedly installed between the double-thread threaded rod and the threaded rod, a dial indicator is fixedly installed on the gauge stand, and the indicator head of the dial indicator is arranged on the upper surface of the shaft end screw before measuring is carried out.
Description
Technical field:
The present invention relates to a kind of device and measuring method of measuring matched bearings end-play, it belongs to bearing and detects field of measuring technique.
Background technology:
Bearing clearance, spindle holds in the time not being installed on axle or bearing housing, and a side of its inner ring or outer ring is fixed, the amount of movement while then making a loose side do radially or move axially.According to moving direction, can be divided into end-play and end-play.The performances such as the rolling fatigue life of the size of the play (being called working gap) when running on bearing, temperature rise, noise, vibration have impact.
In the actual production process of magnetic suspension air blower, matched bearings has obtained a large amount of application in plant equipment.These bearings are being played the part of key player in the actual stable operation process of production, and the control of equipment failure is also had to very large effect.Magnetic levitation apparatus belongs to high-speed equipment, and the maximum speed of its rotor can exceed 40000rpm, if bearing breaks down and can cause very serious industrial accident in such cases.Meanwhile, while producing assembling, because do not understand the concrete numerical value of bearing axial play, assembling progress is greatly affected.
Therefore, the necessary deficiency of prior art being improved to solve prior art.
Summary of the invention:
In order to overcome the deficiencies in the prior art, the object of this invention is to provide a kind of device and measuring method of measuring matched bearings end-play, it can realize the measurement control to matched bearings bearing clearance, and then confirm that whether institute's survey bearing meets technical requirement, avoids because using defective bearing production development accident.
The present invention adopts following technical scheme: a kind of device of measuring matched bearings end-play, it is characterized in that: comprise base, be installed on the rotating shaft of the center in base, be installed on upper thrust magnetic bearing in base and that be sheathed on rotating shaft periphery and lower thrust magnetic bearing, be sheathed on rotating shaft periphery and thrust bearing bracing ring that upper thrust magnetic bearing and lower thrust magnetic bearing are separated, the upper end of described rotating shaft extends beyond outside the upper surface of base, upper end in described rotating shaft is provided with matched bearings, on described thrust magnetic bearing above a bearing bridge that is sheathed on rotating shaft periphery is installed, on described bearing bridge, be provided with one matched bearings is installed on to bearing a set of cups wherein, the outward flange of described bearing bridge is close to the top of the sidewall of base, be separately installed with double threaded screw and screw rod in the both sides of described bearing bridge, position corresponding with double threaded screw and screw rod on described base is formed with screw, on the upper surface of described rotating shaft, shaft end ring is installed, shaft end ring is locked in the axle head screw of rotating shaft upper surface and is sheathed on bearing gland shaft end ring periphery and that be positioned at matched bearings top, between described double threaded screw and screw rod, be mounted with gauge stand, on described gauge stand, be mounted with dial gauge, the gauge outfit of described dial gauge is prepended on axle head screw upper surface in measurement.
Further, the position that is positioned at bearing holder (housing, cover) cup outside on described bearing bridge is formed with a preformed hole that runs through bearing bridge upper and lower surface, is equipped with two electric current lines in described preformed hole, and one is the first electric current line, and another root is the second electric current line.
Further, on described on thrust magnetic bearing and thrust bearing bracing ring with preformed hole on bearing bridge mutually vertically corresponding position be formed with respectively a through hole.
Further, one end of described the first electric current line is connected on thrust magnetic bearing, the other end is connected in external power supply, one end of described the second electric current line is successively through being connected on lower thrust magnetic bearing after preformed hole, the through hole on upper thrust magnetic bearing and the through hole on thrust bearing bracing ring on bearing bridge, and the other end is connected in external power supply.
Further, the external arc diameter of described shaft end ring is greater than the inner ring internal diameter of matched bearings, and is less than the inner ring external diameter of matched bearings.
Further, described bearing gland is positioned at the top of bearing a set of cups, and described bearing gland is the plate body shape that is provided with center hole, and the diameter of described bearing gland center hole is greater than the inner ring external diameter of matched bearings, and is less than the outer ring internal diameter of matched bearings.
Further, the position being positioned on described double threaded screw above gauge stand is provided with nut.
Further, the device of described measurement matched bearings end-play also includes register pin is together fixed on in base, upper thrust magnetic bearing, lower thrust magnetic bearing and thrust bearing bracing ring location.
The present invention also adopts following technical scheme: a kind of measuring method of the device of measuring matched bearings end-play, it comprises the steps:
(1), install before matched bearings, measure matched bearings and be superimposed on thickness together, be designated as Lmm, the length dimension for position that matched bearings is installed of measuring rotating shaft upper end is Dmm, wherein D=L+0.3～0.5;
(2), give lower thrust magnetic bearing energising by the second electric current line, lower thrust magnetic bearing produces electromagnetic force, make rotating shaft to lower stress, now the inner ring of matched bearings is compressed by the lower surface of shaft end ring, keep energising, the gauge outfit of dial gauge is compressed to the upper surface of axle head screw, and by the pointer zeroing of dial gauge;
(3), give the power-off of lower thrust magnetic bearing, give again upper thrust magnetic bearing energising by the first electric current line, upper thrust magnetic bearing produces electromagnetic force, make rotating shaft upwards stressed, the step surface that now inner ring of matched bearings is positioned in rotating shaft below matched bearings compresses, keep energising, record dial gauge reading now, be designated as Amm;
(4), calculate the end-play of matched bearings, provide as follows:
The end-play of matched bearings=| A|-(L-D);
(5), power-off, and dismantle matched bearings.
The present invention has following beneficial effect: by the use of matched bearings end-play pick-up unit, ensure that all bearings that are installed on equipment are all qualified, can meet the requirement of equipment, thereby reduce the failure rate of bearing, the stability that has improved equipment operation, has ensured the stable operation of producing.
Brief description of the drawings:
Fig. 1 is the structural representation that the present invention measures the device of matched bearings end-play.
Fig. 2 is the structural representation of Fig. 1 shaft, axle head screw and shaft end ring.
Fig. 3 is when after lower thrust magnetic bearing energising, rotating shaft is stressed, the partial enlarged drawing at matched bearings place.
Fig. 4 is when after upper thrust magnetic bearing energising, rotating shaft is stressed, the partial enlarged drawing at matched bearings place.
Wherein:
1-base; 2-rotating shaft; The upper thrust magnetic bearing of 3-; Thrust magnetic bearing under 4-; 5-thrust bearing bracing ring; 6-register pin; 7-matched bearings; 8-bearing bridge; 9-the second screw; 10-bearing a set of cups; 11-the first screw; 12-shaft end ring; 13-axle head screw; 14-bearing gland; 15-double threaded screw; 16-screw rod; 17-gauge stand; 18-the 3rd screw; 19-dial gauge; 20-nut.
Embodiment:
Please refer to shown in Fig. 1 and Fig. 2, the device that the present invention measures matched bearings end-play comprises base 1, be installed on the rotating shaft 2 of the center in base 1, be installed on upper thrust magnetic bearing 3 in base 1 and that be sheathed on rotating shaft 2 peripheries and lower thrust magnetic bearing 4, be sheathed on thrust bearing bracing ring 5 rotating shaft 2 peripheries and that upper thrust magnetic bearing 3 and lower thrust magnetic bearing 4 are separated, and wherein base 1, upper thrust magnetic bearing 3, lower thrust magnetic bearing 4 and thrust bearing bracing ring 5 are fixed on together by register pin 6 location.The upper end of shaft 2 of the present invention extends beyond outside the upper surface of base 1, at the upper end of rotating shaft 2, matched bearings 7 is installed.Its shaft 2 is step-like, and the position that is positioned at matched bearings 7 belows in rotating shaft 2 is formed with a step surface (not indicating).
One bearing bridge 8 that is sheathed on rotating shaft 1 periphery is installed in the present invention above upper thrust magnetic bearing 3, bearing bridge 8 is pressed in thrust magnetic bearing 3, on bearing bridge 8, be provided with one matched bearings 7 is installed on to bearing a set of cups 10 wherein, together with wherein bearing bridge 8 is connected and installed in by the first screw 11 with bearing a set of cups 10.The position that is positioned at bearing holder (housing, cover) cup 10 outsides on bearing bridge 8 is formed with a preformed hole (not shown) that runs through bearing bridge 8 upper and lower surfaces, in this preformed hole, be equipped with two electric current lines, one is the first electric current line, another root is the second electric current line, wherein one end of the first electric current line is connected on thrust magnetic bearing 3, and the other end is connected in external power supply.On upper thrust magnetic bearing 3 and thrust bearing bracing ring 5, be also formed with respectively through hole (not shown) in vertical corresponding position mutually with the preformed hole on bearing bridge 8 simultaneously, wherein one end of the second electric current line is successively through being connected on lower thrust magnetic bearing 4 after preformed hole, the through hole on upper thrust magnetic bearing 3 and the through hole on thrust bearing bracing ring 5 on bearing bridge 8, and the other end is connected in external power supply.The outward flange of bearing bridge 8 is close to the top of the sidewall of base 1, is separately installed with double threaded screw 15 and screw rod 16 in the both sides of bearing bridge 8, and wherein on base 1, the position corresponding with double threaded screw 15 and screw rod 16 is formed with screw (not shown).On the upper surface of rotating shaft 1, be provided with shaft end ring 12, by shaft end ring 12 be locked in the axle head screw 13 of rotating shaft 1 upper surface and be sheathed on shaft end ring 12 peripheries and be positioned at the bearing gland 14 above matched bearings 7, wherein the external arc diameter of shaft end ring 12 is greater than the inner ring internal diameter of matched bearings 7 and then blocks matched bearings 7 and do not protrude from outside the upper surface of rotating shaft 1 in the time measuring, and is slightly less than the inner ring external diameter of matched bearings 7 and then does not affect the rotation of matched bearings 7.The top that wherein bearing gland 14 is positioned at bearing a set of cups 10 compress the outer ring of matched bearings 7 by the second screw 9 and be installed on bearing a set of cups 10 together with, bearing gland 14 is for being provided with the plate body shape of center hole, the diameter of bearing gland 14 center holes is greater than the inner ring external diameter of matched bearings 7 and then does not affect the rotation of matched bearings 7 inner rings, and is less than the outer ring internal diameter of matched bearings 7 and then ensures that bearing gland 14 compresses the outer ring of matched bearings 7.
In the present invention, between double threaded screw 15 and screw rod 16, be mounted with gauge stand 17, on gauge stand 17, be mounted with dial gauge 19 precision measuring instruments such as grade by the 3rd screw 18.The position being positioned on double threaded screw 15 above gauge stand 17 is provided with nut 20, by nut 20, double threaded screw 15 is screwed in the screw on base 1, and by screw rod 16 is screwed in the screw on base 1, and then before measurement, the gauge outfit of dial gauge 19 is placed on the upper surface of axle head screw 7.
Please refer to Fig. 1 to Fig. 2, and in conjunction with shown in Fig. 3 to Fig. 4, the present invention measures the measurement device method of matched bearings end-play, comprises the steps:
(1), install before matched bearings 7, measure matched bearings 7 and be superimposed on thickness together, be designated as L (unit: mm), the length dimension for position that matched bearings 7 is installed of measuring rotating shaft 2 upper ends is D (unit: mm), wherein D=L+0.3～0.5 (unit: mm);
(2), switch on to lower thrust magnetic bearing 4 by the second electric current line, lower thrust magnetic bearing 4 produces electromagnetic force, make rotating shaft 2 to lower stress, now the inner ring of matched bearings 7 is compressed by the lower surface of shaft end ring 12, keep energising, the gauge outfit of dial gauge 19 is compressed to the upper surface of axle head screw 13, and by the pointer zeroing of dial gauge 19;
(3), give lower thrust magnetic bearing 4 power-off, switch on to again upper thrust magnetic bearing 3 by the first electric current line, upper thrust magnetic bearing 3 produces electromagnetic force, make rotating shaft 2 upwards stressed, the step surface that now inner ring of matched bearings 7 is positioned at matched bearings 7 belows in rotating shaft 2 compresses, keep energising, record dial gauge 19 reading now, be designated as A (unit: mm);
(4), calculate the end-play of matched bearings 7, provide as follows:
The end-play of matched bearings=| A|-(L-D) (unit: mm);
(5), power-off, and dismantle matched bearings (7).
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make under the premise without departing from the principles of the invention some improvement, and these improve and also should be considered as protection scope of the present invention.
Claims (9)
1. measure the device of matched bearings end-play for one kind, it is characterized in that: comprise base (1), be installed on the rotating shaft (2) of the center in base (1), be installed on upper thrust magnetic bearing (3) and lower thrust magnetic bearing (4) in base (1) and that be sheathed on rotating shaft (2) periphery, be sheathed on rotating shaft (2) peripheral and thrust bearing bracing ring (5) that upper thrust magnetic bearing (3) and lower thrust magnetic bearing (4) are separated, the upper end of described rotating shaft (2) extends beyond outside the upper surface of base (1), at the upper end of described rotating shaft (2), matched bearings (7) is installed, the top of thrust magnetic bearing (3) is provided with one and is sheathed on the peripheral bearing bridge (8) of rotating shaft (1) on described, on described bearing bridge (8), be provided with one matched bearings (7) is installed on to bearing a set of cups (10) wherein, the outward flange of described bearing bridge (8) is close to the top of the sidewall of base (1), be separately installed with double threaded screw (15) and screw rod (16) in the both sides of described bearing bridge (8), the upper position corresponding with double threaded screw (15) and screw rod (16) of described base (1) is formed with screw, shaft end ring (12) is installed on the upper surface of described rotating shaft (1), by shaft end ring (12) be locked in the axle head screw (13) of rotating shaft (1) upper surface and be sheathed on shaft end ring (12) peripheral and the bearing gland (14) that is positioned at matched bearings (7) top, between described double threaded screw (15) and screw rod (16), be mounted with gauge stand (17), on described gauge stand (17), be mounted with dial gauge (19), the gauge outfit of described dial gauge (19) is prepended on axle head screw (13) upper surface in measurement.
2. the device of measurement matched bearings end-play as claimed in claim 1, it is characterized in that: the position that is positioned at bearing holder (housing, cover) cup (10) outside on described bearing bridge (8) is formed with a preformed hole that runs through bearing bridge (8) upper and lower surface, in described preformed hole, be equipped with two electric current lines, one is the first electric current line, and another root is the second electric current line.
3. the device of measurement matched bearings end-play as claimed in claim 2, is characterized in that: thrust magnetic bearing (3) and thrust bearing bracing ring (5) are upper on described is formed with respectively a through hole in vertical corresponding position mutually with the preformed hole on bearing bridge (8).
4. the device of measurement matched bearings end-play as claimed in claim 3, it is characterized in that: one end of described the first electric current line is connected on thrust magnetic bearing (3), the other end is connected in external power supply, one end of described the second electric current line is connected in lower thrust magnetic bearing (4) above after passing successively the through hole on the preformed hole on bearing bridge (8), through hole and the thrust bearing bracing ring (5) on upper thrust magnetic bearing (3), and the other end is connected in external power supply.
5. the device of measurement matched bearings end-play as claimed in claim 4, it is characterized in that: the external arc diameter of described shaft end ring (12) is greater than the inner ring internal diameter of matched bearings (7), and be less than the inner ring external diameter of matched bearings (7).
6. the device of measurement matched bearings end-play as claimed in claim 5, it is characterized in that: described bearing gland (14) is positioned at the top of bearing a set of cups (10), described bearing gland (14) is for being provided with the plate body shape of center hole, the diameter of described bearing gland (14) center hole is greater than the inner ring external diameter of matched bearings (7), and is less than the outer ring internal diameter of matched bearings (7).
7. the device of measurement matched bearings end-play as claimed in claim 6, is characterized in that: the position that is positioned at gauge stand (17) top on described double threaded screw (15) is provided with nut (20).
8. the device of the measurement matched bearings end-play as described in any one in claim 1-7, is characterized in that: the device of described measurement matched bearings end-play also includes register pin (6) is together fixed on in base (1), upper thrust magnetic bearing (3), lower thrust magnetic bearing (4) and thrust bearing bracing ring (5) location.
9. a measuring method of measuring the device of matched bearings end-play, is characterized in that: comprise the steps
(1), installation matched bearings (7) is front, measure matched bearings (7) and be superimposed on thickness together, be designated as Lmm, the length dimension for position that matched bearings (7) is installed of measuring rotating shaft (2) upper end is Dmm, wherein D=L+0.3～0.5;
(2), give lower thrust magnetic bearing (4) energising by the second electric current line, lower thrust magnetic bearing (4) produces electromagnetic force, make rotating shaft (2) to lower stress, now the inner ring of matched bearings (7) is compressed by the lower surface of shaft end ring (12), keep energising, the gauge outfit of dial gauge (19) is compressed to the upper surface of axle head screw (13), and by the pointer zeroing of dial gauge (19);
(3), give lower thrust magnetic bearing (4) power-off, give again upper thrust magnetic bearing (3) energising by the first electric current line, upper thrust magnetic bearing (3) produces electromagnetic force, make rotating shaft (2) upwards stressed, now the inner ring of matched bearings (7) is positioned at the step surface compression of matched bearings (7) below in rotating shaft (2), keep energising, record dial gauge (19) reading now, be designated as Amm;
(4), calculate matched bearings (7) end-play, provide as follows:
The end-play of matched bearings=| A|-(L-D);
(5), power-off, and dismantle matched bearings (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410431960.3A CN104154845B (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410431960.3A CN104154845B (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play and measuring method |
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| Publication Number | Publication Date |
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| CN104154845A true CN104154845A (en) | 2014-11-19 |
| CN104154845B CN104154845B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410431960.3A Active CN104154845B (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play and measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595436A (en) * | 2017-01-24 | 2017-04-26 | 中国航发中传机械有限公司 | Bearing clearance detection device in speed reducer combined casing |
| CN110285744A (en) * | 2019-08-07 | 2019-09-27 | 重庆齿轮箱有限责任公司 | The measuring device and its measurement method of power shift gear bearing axial play |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201187982Y (en) * | 2008-03-28 | 2009-01-28 | 重庆长江轴承股份有限公司 | Biserial contact ball bearing and axial play detector for biserial conical bearing |
| CN201615742U (en) * | 2010-03-01 | 2010-10-27 | 洛阳轴研科技股份有限公司 | Measurer for measuring axial clearances of joint bearings |
| CN204064190U (en) * | 2014-08-27 | 2014-12-31 | 南京磁谷科技有限公司 | A kind of device measuring matched bearings end-play |
-
2014
- 2014-08-27 CN CN201410431960.3A patent/CN104154845B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595436A (en) * | 2017-01-24 | 2017-04-26 | 中国航发中传机械有限公司 | Bearing clearance detection device in speed reducer combined casing |
| CN110285744A (en) * | 2019-08-07 | 2019-09-27 | 重庆齿轮箱有限责任公司 | The measuring device and its measurement method of power shift gear bearing axial play |
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| Publication number | Publication date |
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| CN104154845B (en) | 2016-09-14 |
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Address after: 211102 No.99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |
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