CN102889303A - Method for designing bearing retainer with two radially-convex arc surfaces - Google Patents
Method for designing bearing retainer with two radially-convex arc surfaces Download PDFInfo
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- CN102889303A CN102889303A CN2012104097331A CN201210409733A CN102889303A CN 102889303 A CN102889303 A CN 102889303A CN 2012104097331 A CN2012104097331 A CN 2012104097331A CN 201210409733 A CN201210409733 A CN 201210409733A CN 102889303 A CN102889303 A CN 102889303A
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- retainer
- arc surface
- convex arc
- outer ring
- rib
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Abstract
The invention relates to a method for designing a bearing retainer with two radially-convex arc surfaces. The method comprises the following steps of: setting the diameter of an inside diameter guide flange (2.1) of an outer ring (2) as D, the total width of a retainer (1) as H, the diameter of a pocket hole (1.1) of the retainer (1) as d, and the sum of the widths of two outer flanges (1.2) at the pocket hole of the retainer as H-d to ensure that the width b of each outer flange is equal to (H-d)/2; and designing the radial end face of each outer flange into a convex arc surface, wherein when the gap between the convex arc surface and the inner diameter guide flange of the outer ring is set as S, the outer diameter of the outer flanges is equal to D-2S, and when the arc height of the convex arc surface is set as h, the distance between the centers of two adjacent arc heights on the outer flanges is D-2S-2h, and the curvature radius r of the convex arc surface is more than or equal to b/2. With the adoption of the method, the contact friction between the convex arc surface and the inner diameter guide flange of the outer ring can be effectively reduced, the fluctuation frequency and the peak value generated by friction are reduced, and the working stability of a rolling bearing is improved.
Description
Technical field
The invention belongs to technical field of bearings, especially a kind of retainer has two design method of radially protruding arc surface.
Background technique
The Main Function of retainer is that rolling element is equally spaced, run foul of each other and rub to prevent from producing when working between the rolling element, and guiding drive rolling element rolls at the set raceway of inner ring and outer ring.
Common retainer is the cylndrical surface at two radial end faces at its pocket Kong Chu two ends, the internal diameter guiding rib of this cylndrical surface and outer ring can be regarded short Oil Wedge Hydrodynamic Bearing as, and this cylndrical surface is that a kind of line contacts with the internal diameter guiding rib of outer ring, line contact can produce all relatively large frictional force of vibration frequency and peak value in real work, the frictional force of this great fluctuation process, peak value can affect the flexibility of bearing rotary, increases vibration values.
In addition; under desirable working state; because retainer does not have its fixing track and support; retainer can keep a kind of and the contactless suspension attitude of inner ring and outer ring; and under actual working state; because suffered load uncertain and process existing error, the operating attitude of retainer can occur certain eccentric and tilt usually, this off-centre and inclination can make the internal diameter guiding rib generation contact friction of retainer and outer ring.
The contact friction that how to reduce described line contact and produce is the important topic of retainer research, and this has far reaching significance to the working stability that improves rolling bearing.
Summary of the invention
For addressing the above problem, the invention provides a kind of retainer and have two design method of radially protruding arc surface, have two according to the designed retainer that goes out of this design method and radially protrude arc surface, radially protruding arc surface contacts with the internal diameter guiding rib formation point of outer ring, under a contact and normal lubricating status, have that two retainers that radially protrude arc surface can effectively reduce and the internal diameter of outer ring guiding rib between contact friction, greatly reduce vibration frequency and the peak value that produces owing to contact friction, improved the working stability of rolling bearing.
For achieving the above object, the present invention adopts following technological scheme:
A kind of retainer has two design method of radially protruding arc surface, and the internal diameter guiding rib diameter of setting the outer ring is D, and the beam overall of retainer is H, and the pocket bore dia of retainer is d, and feature of the present invention is as follows:
Width sum=the H-d of two outer ribs is located in retainer pocket hole, then the width b=(H-d)/2 of each outer rib; The radial end face of each outer rib is designed to protrude arc surface, when gap is set as S between the internal diameter of described protrusion arc surface and the outer ring guiding rib, the external diameter=D-2S of outer rib then; When the camber of described protrusion arc surface is set as h, the centre distance=D-2S-2h of adjacent two camber on the outer rib then, the radius of curvature r of described protrusion arc surface 〉=b/2.
S described above is controlled at 0.05 ~ 2 ㎜.
H described above≤3 ㎜.
Owing to adopting as mentioned above technological scheme, the present invention produces following beneficial effect:
1, the present invention is owing to the radial end face of retainer pocket hole being located each described outer rib is designed to protrude arc surface, described protrusion arc surface forms point with the internal diameter guiding rib of outer ring and contacts, the point contact is approximate a kind of ehl status under normal lubricating status, have that two retainers that radially protrude arc surface can effectively reduce and the internal diameter of outer ring guiding rib between contact friction, greatly reduce vibration frequency and the peak value that produces owing to contact friction, the direct effect of antifriction is the working stability that has improved rolling bearing.
2, gap is set as S between the rib because the internal diameter of described protrusion arc surface of the present invention and outer ring guides, so the retainer that the present invention designs guides rib near the internal diameter of outer ring relatively, rely on the internal diameter guiding rib of outer ring to provide rotary mop power for retainer, so the retainer that the present invention designs can be applied to the rolling bearing of High Rotation Speed, the rotating speed of rolling bearing is further improved.
Description of drawings
Fig. 1 is the structural representation sketch that partly cuts open of the present invention.
Fig. 2 is the A-A place cross-section structure simplified schematic diagram of Fig. 1.
Fig. 3 is the graph of a relation of the internal diameter guiding rib of retainer of the present invention and outer ring.
Among the above-mentioned figure: the 1-retainer; 1.1-pocket hole; 1.2-outer rib; The 2-outer ring; 2.1-internal diameter guiding rib.
Embodiment
The present invention is that a kind of retainer has two design method of radially protruding arc surface.
Internal diameter guiding rib 2.1 diameters of setting outer ring 2 are D, and the beam overall of retainer 1 is H, and pocket hole 1.1 diameters of retainer 1 are d, and the pocket hole count is several, and these parameters are the prerequisite basic parameters of rolling bearing.
Such as D=60.6 ㎜, H=11.1 ㎜, d=6.6 ㎜.
In conjunction with Fig. 1-Fig. 3, the width sum of two outer ribs=H-d=4.5 ㎜, then the width b=(H-d) of each outer rib 1.2/2=2.25 ㎜ located in retainer of the present invention 1 pocket hole.
The radial end face of each outer rib 1.2 is designed to protrude arc surface, two outer ribs have just formed has two retainers that radially protrude arc surface, when gap is set as S between the internal diameter guiding rib 2.1 of described protrusion arc surface and outer ring 2, the external diameter of outer rib 1.2=D-2S=60.2 ㎜ then, described S is controlled at 0.2 ㎜, described protrusion arc surface forms point with the internal diameter guiding rib 2.1 of outer ring 2 and contacts, the point contact is approximate a kind of ehl status under normal lubricating status, have that two retainers that radially protrude arc surface can effectively reduce and the internal diameter of outer ring guiding rib between contact friction, greatly reduce vibration frequency and the peak value that produces owing to contact friction, the direct effect of antifriction is the working stability that has improved rolling bearing.The internal diameter of outer rib 1.2 gets final product with reference to the retainer parameter.
When the camber of described protrusion arc surface is set as h, the centre distance of adjacent two camber=D-2S-2h=59.6 ㎜ on the outer rib then, the radius of curvature r of described protrusion arc surface 〉=b/2=1.125 ㎜, described h is controlled at 0.3 ㎜.Although radius of curvature r calculates according to b/2, radius of curvature r also will consider according to the working speed of rolling bearing, the material of retainer, the intensity of retainer.
The retainer that the present invention designs guides rib near the internal diameter of outer ring relatively, rely on the internal diameter guiding rib of outer ring to provide rotary mop power for retainer, so the retainer that the present invention designs can be applied to the rolling bearing of High Rotation Speed, the rotating speed of rolling bearing is further improved.
The pocket hole of retainer can be enclosed also can be semi-open type such as Fig. 1-shown in Figure 2, semi-open type is the groove that axial arbitrary end has certain width in the pocket hole, this groove can make the pocket hole store a certain amount of lubricating grease.
The material of retainer can be nonmetallic such as engineering plastics or bakelite etc., also can be metal such as Cuprum alloy, zinc alloy etc.
Open the present invention and the embodiment that selects in this article currently think to suit, but will be appreciated that: the present invention is intended to comprise that all belong to the interior embodiment's of this design and the scope of the invention all changes and improvement.
Claims (3)
1. a retainer has two design method of radially protruding arc surface, internal diameter guiding rib (2.1) diameter of setting outer ring (2) is D, the beam overall of retainer (1) is H, and pocket hole (1.1) diameter of retainer (1) is d, its feature in this way:
Width sum=the H-d of place, retainer (1) pocket hole (1.1) two outer ribs (1.2), then the width b=(H-d)/2 of each outer rib (1.2); The radial end face of each outer rib (1.2) is designed to protrude arc surface, when gap is set as S between the internal diameter of described protrusion arc surface and outer ring (2) the guiding rib (2.1), the external diameter=D-2S of outer rib (1.2) then; When the camber of described protrusion arc surface is set as h, the centre distance=D-2S-2h of adjacent two camber on the outer rib then, the radius of curvature r of described protrusion arc surface 〉=b/2.
2. described retainer has two design method of radially protruding arc surface according to claim 1, its feature in this way: described S is controlled at 0.05 ~ 2 ㎜.
3. described retainer has two design method of radially protruding arc surface according to claim 1, its feature in this way: described h≤3 ㎜.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104097331A CN102889303A (en) | 2012-10-24 | 2012-10-24 | Method for designing bearing retainer with two radially-convex arc surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104097331A CN102889303A (en) | 2012-10-24 | 2012-10-24 | Method for designing bearing retainer with two radially-convex arc surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102889303A true CN102889303A (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104097331A Pending CN102889303A (en) | 2012-10-24 | 2012-10-24 | Method for designing bearing retainer with two radially-convex arc surfaces |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB410891A (en) * | 1932-12-14 | 1934-05-31 | Ransome And Marles Bearing Com | Improvements in or relating to ball, roller and like anti-friction bearings |
| CN200955551Y (en) * | 2006-09-14 | 2007-10-03 | 浙江天马轴承股份有限公司 | Corner-contact ball bearing bakelite sloting holder |
| CN201696499U (en) * | 2010-05-10 | 2011-01-05 | 浙江天马轴承股份有限公司 | Retainer of ball bearing with four-point contact |
-
2012
- 2012-10-24 CN CN2012104097331A patent/CN102889303A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB410891A (en) * | 1932-12-14 | 1934-05-31 | Ransome And Marles Bearing Com | Improvements in or relating to ball, roller and like anti-friction bearings |
| CN200955551Y (en) * | 2006-09-14 | 2007-10-03 | 浙江天马轴承股份有限公司 | Corner-contact ball bearing bakelite sloting holder |
| CN201696499U (en) * | 2010-05-10 | 2011-01-05 | 浙江天马轴承股份有限公司 | Retainer of ball bearing with four-point contact |
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Application publication date: 20130123 |