CN102943819B - Pre-stressing assembly method for double-column bearing - Google Patents
Pre-stressing assembly method for double-column bearing Download PDFInfo
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- CN102943819B CN102943819B CN201210464052.5A CN201210464052A CN102943819B CN 102943819 B CN102943819 B CN 102943819B CN 201210464052 A CN201210464052 A CN 201210464052A CN 102943819 B CN102943819 B CN 102943819B
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Abstract
The invention discloses a pre-stressing assembly method for a double-column bearing. The method comprises the following steps of: 1) respectively measuring the distance of the end faces of two inner rings before assembling a bearing; 2) assembling the two inner rings, an outer ring, a steel ball and a maintaining frame together; 3) respectively implementing action force toward a middle direction on the outer end faces of the two inner rings to enable the steel ball to be contacted with the roller way of a corresponding inner ring; 4) measuring the distance between the outer end faces of the two inner rings; and 5) calculating the gap between the two inner rings, and judging whether the gap exceeds the scope of 0.005-0.05mm. The pre-stressing assembly method has an ingenious design and convenience in operation, the assembly efficiency is ensured, meanwhile the pre-adding load assembly of the double-column bearing can be realized, the overall rigidity of the double-column bearing is guaranteed, and the service life of the double-column bearing is greatly prolonged.
Description
Technical field
The invention belongs to technical field of bearings, specifically, the particularly prestressed assembling method of a kind of double row bearing.
Background technique
Double row bearing product is generally made up of outer ring, inner ring, retainer and steel ball, the inwall of outer ring is provided with two raceways, the corresponding inner ring of each raceway, and two inner rings are separated, between each inner ring and outer ring, be provided with one group of steel ball, steel ball is located by retainer.After double row bearing assembling, determined the actual axial internal clearance (two inner rings are relative to the axial jump amount of outer ring) of bearing by backlash detector device.
In theory, the axial internal clearance of above-mentioned double row bearing controls in " 0 " or suitable to negative value, can realize pretension and improve the rigidity of bearing integral.But this pretension degree is difficult to detection and control on bearing completed products, and excessive prestressing force can strengthen bearing load on the contrary, reduce the working life of bearing.Because double row bearing finished product is all-in-one-piece, directly contact and gapless between two inner rings, the assembly process that cannot be installed to other parts at bearing carries out axial pretightening by the distance between adjustment two inner rings.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of double row bearing prestressing force assembling method can guaranteeing bearing integral rigidity.
Technological scheme of the present invention is as follows: a kind of double row bearing prestressing force assembling method, is characterized in that comprising the following steps:
1) before bearing assembling, the distance (c) between distance (b) between the first inner ring (1) both ends of the surface and the second inner ring (2) both ends of the surface is measured;
2) the first inner ring (1), the second inner ring (2) and outer ring (3), steel ball (4) and retainer are fitted together;
3) in the exterior edge face of the first inner ring (1) and the second inner ring (2) respectively to third side to applying active force, steel ball is contacted with the raceway of corresponding inner ring;
4) distance (D) between the exterior edge face of the first inner ring (1) and the exterior edge face of the second inner ring (2) is measured;
5) gap (a) between the first inner ring (1) and the second inner ring (2) is calculated, distance (c) between distance (b)-the second inner ring (2) both ends of the surface between distance (D)-the first inner ring (1) both ends of the surface between these gap (a)=two inner ring exterior edge face, if the gap (a) between the first inner ring (1) and the second inner ring (2) is more than 0.005 ~ 0.05mm scope, change inner ring or steel ball, repeat above-mentioned 1)-4) step.
The present invention by the inner ring gap control of double row bearing finished product in 0.005 ~ 0.05mm scope, time double row bearing installs on axle by user, only need by the first inner ring and the second inner ring upper-lower compacting, elimination size gap, not only operation is very easy, and reach the prestressed object of maintenance, integral rigidity and the cracking resistance of double row bearing can be guaranteed, thus effectively extend the working life of double row bearing.
Conveniently measure operation, and ensureing the accuracy of measurement, the distance (c) between the distance (b) between described first inner ring (1) both ends of the surface, the second inner ring (2) both ends of the surface and the distance (D) between two inner ring exterior edge faces are all measured by bearing testers.
Beneficial effect: the present invention designs ingenious, easy and simple to handle, while guaranteeing efficiency of assembling, can realize the preloading assembling of double row bearing, ensure that the integral rigidity of double row bearing, substantially prolongs the working life of double row bearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figure 1, double row bearing is made up of the first inner ring 1, second inner ring 2, outer ring 3, steel ball 4 and retainer (not shown in FIG.).Wherein, the inwall of outer ring 3 is processed with two raceways, the corresponding inner ring of each raceway.Described first inner ring 1 and the second inner ring 2 are separated, the outer wall of each inner ring is also processed with raceway, and the raceway that the raceway on described inner ring is corresponding with on outer ring 3 matches, and forms the installing space of steel ball 4, be provided with one group of steel ball 4 in this installing space, steel ball 4 is located by retainer.
Embodiment 1
After each component of above-mentioned double row bearing is ready to, its prestressing force assembling method comprises the following steps:
1) before bearing assembling, bearing testers is adopted to measure distance c between distance b between the first inner ring 1 both ends of the surface and the second inner ring 2 both ends of the surface;
2) the first inner ring 1, second inner ring 2 and outer ring 3, steel ball 4 and retainer are fitted together;
3) in the exterior edge face of the first inner ring 1 and the second inner ring 2 respectively to third side to applying active force, steel ball 4 is contacted with the raceway of corresponding inner ring;
4) employing bearing testers measures the distance D between the exterior edge face of the first inner ring 1 and the exterior edge face of the second inner ring 2;
5) the gap a between the first inner ring 1 and the second inner ring 2 is calculated, distance c between distance b-second inner ring 2 both ends of the surface between distance D-first inner ring 1 both ends of the surface between this gap a=two inner ring exterior edge faces, if the gap a between the first inner ring 1 and the second inner ring 2 is more than 0.005 ~ 0.05mm scope, change the first inner ring 1, repeat above-mentioned 1)-4) step.
Embodiment 2
After each component of above-mentioned double row bearing is ready to, its prestressing force assembling method comprises the following steps:
1) before bearing assembling, bearing testers is adopted to measure distance c between distance b between the first inner ring 1 both ends of the surface and the second inner ring 2 both ends of the surface;
2) the first inner ring 1, second inner ring 2 and outer ring 3, steel ball 4 and retainer are fitted together;
3) in the exterior edge face of the first inner ring 1 and the second inner ring 2 respectively to third side to applying active force, steel ball 4 is contacted with the raceway of corresponding inner ring;
4) employing bearing testers measures the distance D between the exterior edge face of the first inner ring 1 and the exterior edge face of the second inner ring 2;
5) the gap a between the first inner ring 1 and the second inner ring 2 is calculated, distance c between distance b-second inner ring 2 both ends of the surface between distance D-first inner ring 1 both ends of the surface between this gap a=two inner ring exterior edge faces, if the gap a between the first inner ring 1 and the second inner ring 2 is more than 0.005 ~ 0.05mm scope, change the second inner ring 2, repeat above-mentioned 1)-4) step.
Embodiment 3
After each component of above-mentioned double row bearing is ready to, its prestressing force assembling method comprises the following steps:
1) before bearing assembling, bearing testers is adopted to measure distance c between distance b between the first inner ring 1 both ends of the surface and the second inner ring 2 both ends of the surface;
2) the first inner ring 1, second inner ring 2 and outer ring 3, steel ball 4 and retainer are fitted together;
3) in the exterior edge face of the first inner ring 1 and the second inner ring 2 respectively to third side to applying active force, steel ball 4 is contacted with the raceway of corresponding inner ring;
4) employing bearing testers measures the distance D between the exterior edge face of the first inner ring 1 and the exterior edge face of the second inner ring 2;
5) the gap a between the first inner ring 1 and the second inner ring 2 is calculated, distance c between distance b-second inner ring 2 both ends of the surface between distance D-first inner ring 1 both ends of the surface between this gap a=two inner ring exterior edge faces, if the gap a between the first inner ring 1 and the second inner ring 2 is more than 0.005 ~ 0.05mm scope, change the first inner ring 1 and the second inner ring 2, repeat above-mentioned 1)-4) step.
Embodiment 4
After each component of above-mentioned double row bearing is ready to, its prestressing force assembling method comprises the following steps:
1) before bearing assembling, bearing testers is adopted to measure distance c between distance b between the first inner ring 1 both ends of the surface and the second inner ring 2 both ends of the surface;
2) the first inner ring 1, second inner ring 2 and outer ring 3, steel ball 4 and retainer are fitted together;
3) in the exterior edge face of the first inner ring 1 and the second inner ring 2 respectively to third side to applying active force, steel ball 4 is contacted with the raceway of corresponding inner ring;
4) employing bearing testers measures the distance D between the exterior edge face of the first inner ring 1 and the exterior edge face of the second inner ring 2;
5) the gap a between the first inner ring 1 and the second inner ring 2 is calculated, distance c between distance b-second inner ring 2 both ends of the surface between distance D-first inner ring 1 both ends of the surface between this gap a=two inner ring exterior edge faces, if the gap a between the first inner ring 1 and the second inner ring 2 is more than 0.005 ~ 0.05mm scope, change that group steel ball corresponding to the first inner ring 1, repeat above-mentioned 1)-4) step.
Embodiment 5
After each component of above-mentioned double row bearing is ready to, its prestressing force assembling method comprises the following steps:
1) before bearing assembling, bearing testers is adopted to measure distance c between distance b between the first inner ring 1 both ends of the surface and the second inner ring 2 both ends of the surface;
2) the first inner ring 1, second inner ring 2 and outer ring 3, steel ball 4 and retainer are fitted together;
3) in the exterior edge face of the first inner ring 1 and the second inner ring 2 respectively to third side to applying active force, steel ball 4 is contacted with the raceway of corresponding inner ring;
4) employing bearing testers measures the distance D between the exterior edge face of the first inner ring 1 and the exterior edge face of the second inner ring 2;
5) the gap a between the first inner ring 1 and the second inner ring 2 is calculated, distance c between distance b-second inner ring 2 both ends of the surface between distance D-first inner ring 1 both ends of the surface between this gap a=two inner ring exterior edge faces, if the gap a between the first inner ring 1 and the second inner ring 2 is more than 0.005 ~ 0.05mm scope, change that group steel ball corresponding to the second inner ring 2, repeat above-mentioned 1)-4) step.
Embodiment 6
After each component of above-mentioned double row bearing is ready to, its prestressing force assembling method comprises the following steps:
1) before bearing assembling, bearing testers is adopted to measure distance c between distance b between the first inner ring 1 both ends of the surface and the second inner ring 2 both ends of the surface;
2) the first inner ring 1, second inner ring 2 and outer ring 3, steel ball 4 and retainer are fitted together;
3) in the exterior edge face of the first inner ring 1 and the second inner ring 2 respectively to third side to applying active force, steel ball 4 is contacted with the raceway of corresponding inner ring;
4) employing bearing testers measures the distance D between the exterior edge face of the first inner ring 1 and the exterior edge face of the second inner ring 2;
5) the gap a between the first inner ring 1 and the second inner ring 2 is calculated, distance c between distance b-second inner ring 2 both ends of the surface between distance D-first inner ring 1 both ends of the surface between this gap a=two inner ring exterior edge faces, if the gap a between the first inner ring 1 and the second inner ring 2 is more than 0.005 ~ 0.05mm scope, two groups of steel balls are changed, repeat above-mentioned 1)-4) step.
In the present invention, what the first inner ring 1, second inner ring 2, outer ring 3, steel ball 4 and retainer are fitted together is operating as prior art, does not repeat at this.
Claims (2)
1. a double row bearing prestressing force assembling method, is characterized in that comprising the following steps:
1) before bearing assembling, the distance (c) between distance (b) between the first inner ring (1) both ends of the surface and the second inner ring (2) both ends of the surface is measured;
2) the first inner ring (1), the second inner ring (2) and outer ring (3), steel ball (4) and retainer are fitted together;
3) in the exterior edge face of the first inner ring (1) and the second inner ring (2) respectively to third side to applying active force, steel ball is contacted with the raceway of corresponding inner ring;
4) distance (D) between the exterior edge face of the first inner ring (1) and the exterior edge face of the second inner ring (2) is measured;
5) gap (a) between the first inner ring (1) and the second inner ring (2) is calculated, distance (c) between distance (b)-the second inner ring (2) both ends of the surface between distance (D)-the first inner ring (1) both ends of the surface between these gap (a)=two inner ring exterior edge face, if the gap (a) between the first inner ring (1) and the second inner ring (2) is more than 0.005 ~ 0.05mm scope, change inner ring or steel ball, repeat above-mentioned 1)-4) step.
2. double row bearing prestressing force assembling method according to claim 1, is characterized in that: the distance (c) between the distance (b) between described first inner ring (1) both ends of the surface, the second inner ring (2) both ends of the surface and the distance (D) between two inner ring exterior edge faces are all measured by bearing testers.
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| CN201210464052.5A CN102943819B (en) | 2012-11-16 | 2012-11-16 | Pre-stressing assembly method for double-column bearing |
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| CN201210464052.5A CN102943819B (en) | 2012-11-16 | 2012-11-16 | Pre-stressing assembly method for double-column bearing |
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| CN102943819A CN102943819A (en) | 2013-02-27 |
| CN102943819B true CN102943819B (en) | 2015-04-15 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105041853A (en) * | 2015-07-31 | 2015-11-11 | 洛阳轴研科技股份有限公司 | Face-to-face matched angular contact ball bearing and matching method thereof |
| CN106640989B (en) * | 2015-08-04 | 2018-05-22 | 襄阳振本传动设备有限公司 | Biserial thin-wall angular contact ball bearing assembles device |
| CN109839051B (en) * | 2019-03-26 | 2021-01-29 | 洛阳新强联回转支承股份有限公司 | Method for determining axial clearance of three-row cylindrical roller variable pitch bearing |
| CN113819141A (en) * | 2021-11-03 | 2021-12-21 | 哈尔滨轴承集团有限公司 | Aircraft gyroscope main shaft bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008089122A (en) * | 2006-10-03 | 2008-04-17 | Ntn Corp | Assembly method for wheel bearing device |
| 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 |
| CN101858387A (en) * | 2010-06-22 | 2010-10-13 | 济南易恒技术有限公司 | Assembly line for automobile first-generation hub bearing |
| CN202520801U (en) * | 2012-03-23 | 2012-11-07 | 韶关东南轴承有限公司 | Die for assembling double row angular contact bearings |
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2012
- 2012-11-16 CN CN201210464052.5A patent/CN102943819B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008089122A (en) * | 2006-10-03 | 2008-04-17 | Ntn Corp | Assembly method for wheel bearing device |
| 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 |
| CN101858387A (en) * | 2010-06-22 | 2010-10-13 | 济南易恒技术有限公司 | Assembly line for automobile first-generation hub bearing |
| CN202520801U (en) * | 2012-03-23 | 2012-11-07 | 韶关东南轴承有限公司 | Die for assembling double row angular contact bearings |
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