CN209294253U - A kind of precision bearing ball basal plane oil pit taper roller - Google Patents
A kind of precision bearing ball basal plane oil pit taper roller Download PDFInfo
- Publication number
- CN209294253U CN209294253U CN201822202226.6U CN201822202226U CN209294253U CN 209294253 U CN209294253 U CN 209294253U CN 201822202226 U CN201822202226 U CN 201822202226U CN 209294253 U CN209294253 U CN 209294253U
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- China
- Prior art keywords
- oil pit
- taper roller
- circular arc
- precision bearing
- arc line
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Abstract
The utility model relates to precision bearing field, specifically a kind of precision bearing ball basal plane oil pit taper roller.Oil pit is offered in the center of taper roller big end, the shape in oil pit section is arched, the contour line in oil pit section includes lesser first circular arc line of one section of curvature and biggish second circular arc line of two sections of curvature, two section of second circular arc line is inscribed within the both ends of the first circular arc line respectively, wherein the radius of the first circular arc line be assemblied in precision bearing with taper roller after operational process in revolution orbital radius it is identical.The utility model can enable lubricating oil is fast to flow through oil pit, and the cracking phenomena for avoiding the oil pit part of taper roller from generating during precision bearing runs at high speed.
Description
Technical field
The utility model relates to precision bearing field, specifically a kind of precision bearing is rolled with ball basal plane oil pit circular cone
Son.
Background technique
Taper roller in precision bearing usually offers oil pit in big end, and lubricating oil is by the mobilization in oil pit
Good lubricant environment is provided for precision bearing overall operation.Oil pit in the prior art generallys use two kinds such as Fig. 4 and Fig. 5
Structure type, the cave bottom of the oil pit of two kinds of structures are plane, and the section of the annular cavity wall of oil pit is arc-shaped or linear.
Oil pit with above structure has the following problems in the operational process for being assemblied in precision bearing: 1, in bearing height
In fast operation process lubricant grease cannot the smooth circulation in oil pit, in oil pit be easy accumulate impurity, thus make oil pit rise not
To normal lubricating action；2, most taper rollers pass through mold cold-heading punch forming in the market, in forming process
Wedge angle can be generated between the cave bottom and annular cavity wall of above-mentioned oil pit, such taper roller holds during precision bearing runs at high speed
Wedge angle position stress is easily set to concentrate and cause to crack, influence the normal operation of precision bearing and cause to precision bearing permanent
Damage.
Utility model content
The utility model is intended to provide a kind of precision bearing ball basal plane oil pit taper roller, enables lubricating oil is fast to flow through
Oil pit, and the cracking phenomena for avoiding the oil pit part of taper roller from generating during precision bearing runs at high speed.
In order to solve the above technical problems, the technical solution adopted in the utility model are as follows: a kind of precision bearing ball basal plane
Oil pit taper roller offers oil pit in the center of taper roller big end, and the shape in oil pit section is arched, oil pit section
Contour line include lesser first circular arc line of one section of curvature and biggish second circular arc line of two sections of curvature, two section of second circular arc line
It is inscribed within the both ends of the first circular arc line respectively, wherein the radius of the first circular arc line and taper roller are assemblied in the fortune after precision bearing
Revolution orbital radius during row is identical.
Preferably, the shape of oil pit pocket is circle.
Preferably, the pocket radius of oil pit is the 1/2-7/10 of taper roller big end radius.
Preferably, the depth capacity of oil pit is no more than 1.2mm.
Preferably, the center of circle corresponding to the first circular arc line is overlapped and is distributed on the central axis of taper roller.
Preferably, two section of second circular arc line is symmetrically distributed in the both ends of the first circular arc line with the central axis of taper roller.
Beneficial effect
Oil pit in the utility model is rotarily formed centered on taper roller central axis by the contour line of specific shape,
It on the one hand, is smooth streamlined, another aspect, the first circular arc line of oil pit bottom in all directions of lubricant grease flowing
Diameter be assemblied in precision bearing with taper roller after operational process in revolution orbital radius it is identical so that lubricant grease
Can promptly in oil pit circulation and can in oil pit swirling flow, reduce precision bearing because lubrication it is unsmooth caused by shell in early days
Fall the generation with wear-out failure.
Wedge angle, so as to avoid precision bearing during running at high speed, corner are free of in the oil pit of the utility model
Cracking phenomena caused by position stress is concentrated, greatly improves the service life of taper roller and its matched precision bearing.
Detailed description of the invention
Fig. 1 is the partial sectional view of the utility model；
Fig. 2 is the partial enlargement diagram of the contour line part in oil pit section in Fig. 1；
Fig. 3 is the right view of Fig. 1；
Fig. 4 is a kind of structural schematic diagram of taper roller oil pit in the prior art；
Fig. 5 is another structural schematic diagram of taper roller oil pit in the prior art；
Marked in the figure: 1, taper roller, 2, oil pit, 3, contour line, the 301, first circular arc line, the 302, second circular arc line.
Specific embodiment
As shown in Figures 1 and 3, a kind of precision bearing of the utility model 2 taper roller 1 of ball basal plane oil pit, including circle
Cone 1 ontology of roller and the oil pit 2 for being provided with 1 big end center of taper roller.Taper roller 1 uses high-strength alloy Steel material
Production.Oil pit 2 sends out punch forming using cold-heading by the mold of specific shape.The pocket shape of oil pit 2 is circle, and radius is
The 1/2-7/10 of 1 big end radius of taper roller, preferably 3/5, with while guaranteeing 1 self-strength of taper roller, as far as possible
More receiving lubricant grease and for lubricant grease in oil pit 2 smooth outflow.
The shape in 2 section of oil pit is arched in the utility model, and the contour line 3 in 2 section of oil pit is as shown in Fig. 2, oil pit 2
The big end of cave bottom surface and cave wall surface by above-mentioned contour line 3 in taper roller 1 is rotarily formed centered on 1 central axes of taper roller.
The contour line 3 of oil pit 2 in Fig. 2 includes lesser first circular arc line 301 of one section of curvature and biggish second circular arc of two sections of curvature
Line 302.The center of circle of first circular arc line 301 and the central axis of taper roller 1 coincide, wherein the radius R of the first circular arc line 301
The revolution radius of track in operational process after being assemblied in precision bearing with taper roller 1 is identical.Two section of second circular arc line 302
It is inscribed within the both ends of the first circular arc line 301 respectively, and symmetrical as center line using the central axis of taper roller 1, makes profile
Line 3 keep it is uniformly smooth it is fairshaped simultaneously, but also whole section of contour line 3 of whole section of oil pit 2 is not present and is easy stress and concentrates
Wedge angle.The depth capacity of oil pit 2 in the present embodiment, i.e. the first circular arc line 301 center between 1 big end end face of taper roller
Distance be no more than 1.2mm, and the radius r of the second circular arc line 302 is deep by the maximum of the radius R of the first circular arc line 301, oil pit 2
Degree and 2 pocket radius of oil pit determine jointly.
Claims (6)
1. a kind of precision bearing ball basal plane oil pit taper roller offers oil pit in the center of taper roller (1) big end
(2), it is characterised in that: the shape in oil pit (2) section is arched, and the contour line (3) in oil pit (2) section includes that one section of curvature is smaller
The first circular arc line (301) and biggish second circular arc line (302) of two sections of curvature, two section of second circular arc line (302) inscribe respectively
In the both ends of the first circular arc line (301), wherein the radius of the first circular arc line (301) and taper roller (1) are assemblied in precision bearing
Revolution orbital radius in operational process afterwards is identical.
2. a kind of precision bearing according to claim 1 ball basal plane oil pit taper roller, it is characterised in that: oil pit (2)
The shape of pocket is circle.
3. a kind of precision bearing according to claim 2 ball basal plane oil pit taper roller, it is characterised in that: oil pit (2)
Pocket radius be taper roller (1) big end radius 1/2-7/10.
4. a kind of precision bearing according to claim 2 ball basal plane oil pit taper roller, it is characterised in that: oil pit (2)
Depth capacity be no more than 1.2mm.
5. a kind of precision bearing according to claim 1 ball basal plane oil pit taper roller, it is characterised in that: the first circular arc
The center of circle corresponding to line (301) is overlapped and is distributed on the central axis of taper roller (1).
6. a kind of precision bearing according to claim 5 ball basal plane oil pit taper roller, it is characterised in that: two section second
Circular arc line (302) is symmetrically distributed in the both ends of the first circular arc line (301) with the central axis of taper roller (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822202226.6U CN209294253U (en) | 2018-12-26 | 2018-12-26 | A kind of precision bearing ball basal plane oil pit taper roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822202226.6U CN209294253U (en) | 2018-12-26 | 2018-12-26 | A kind of precision bearing ball basal plane oil pit taper roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209294253U true CN209294253U (en) | 2019-08-23 |
Family
ID=67648968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822202226.6U Active CN209294253U (en) | 2018-12-26 | 2018-12-26 | A kind of precision bearing ball basal plane oil pit taper roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209294253U (en) |
-
2018
- 2018-12-26 CN CN201822202226.6U patent/CN209294253U/en active Active
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