CN210859564U - Powder metallurgy oil-retaining bearing - Google Patents
Powder metallurgy oil-retaining bearing Download PDFInfo
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- CN210859564U CN210859564U CN201921960535.8U CN201921960535U CN210859564U CN 210859564 U CN210859564 U CN 210859564U CN 201921960535 U CN201921960535 U CN 201921960535U CN 210859564 U CN210859564 U CN 210859564U
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- bearing
- mounting groove
- outer ring
- oil
- powder metallurgy
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Abstract
The utility model relates to a powder metallurgy oil-retaining bearing, which comprises a bearing body, wherein the bearing body is in a hollow cylinder shape and comprises a bearing inner ring and a bearing outer ring, and the outer diameter of the cross section of the bearing outer ring from one end to the other end is gradually reduced; the outer wall of the bearing outer ring is provided with a plurality of mounting grooves from one end to the other end along the axial direction of the outer wall, the cross section of each mounting groove is semicircular, the inner diameter of the cross section of one end of each mounting groove is the same as that of the other end of each mounting groove, and each mounting groove is internally provided with at least one limiting groove; at least one connecting groove is formed in the end face of at least one end of the bearing outer ring; the bearing body is immersed with an oil layer. The utility model discloses bearing inner race has the mounting groove along its axial, can prevent that the bearing from following its circumference dystopy, and simultaneously, bearing inner race one end reduces gradually to the external diameter of the other end, can avoid axial dystopy to drop even.
Description
Technical Field
The utility model relates to a bearing field especially relates to a powder metallurgy oil retaining bearing.
Background
The oil-impregnated bearing, also called porous bearing, uses metal powder as main raw material, and is a sintered body made by powder metallurgy, and is porous originally, and has the technical advantages of freely adjusting the number, size, shape and distribution of pores in the remanufacturing process. The oil-retaining bearing has the characteristics of low cost, vibration absorption, low noise, no need of adding lubricating oil and the like in a longer working time, and is particularly suitable for a working environment which is not easy to lubricate or is not allowed to be polluted by oil.
When the existing oil-containing bearing is connected with the corresponding component, the condition of looseness is easy to generate; meanwhile, the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a powder metallurgy oiliness bearing has solved the easy axial of bearing and has come off, and the long easy problem that produces the dystopy of function time.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a powder metallurgy oil retaining bearing, including the bearing body, the bearing body is hollow cylinder, the bearing main part includes bearing inner circle and bearing inner race, its characterized in that: the outer diameter of the cross section of the bearing outer ring from one end to the other end is gradually reduced, and the bearing outer ring is provided with steps along the circumferential direction; the outer wall of the bearing outer ring is provided with a plurality of mounting grooves from one end to the other end along the axial direction of the outer wall, the cross section of each mounting groove is semicircular, the inner diameter of the cross section of one end of each mounting groove is the same as that of the other end of each mounting groove, and each mounting groove is internally provided with at least one limiting groove; at least one connecting groove is formed in the end face of at least one end of the bearing outer ring; the bearing body is soaked with an oil layer.
Further, a plurality of the mounting grooves are arranged at equal intervals.
Further, the mounting grooves are four.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model discloses a powder metallurgy oil retaining bearing because the bearing inner race has the mounting groove along its axial, can prevent that the bearing from following its circumference dystopy, and simultaneously, bearing inner race one end reduces gradually to the external diameter of the other end, can avoid axial dystopy to drop even.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of a powder metallurgy oil retaining bearing according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of one of the powder metallurgy oil impregnated bearings shown in FIG. 1;
fig. 3 is a schematic vertical cross-sectional view of one of the powder metallurgy oil-impregnated bearings shown in fig. 1.
Wherein the reference numerals are as follows:
1. a bearing body; 2. a bearing outer race; 3. mounting grooves; 4. and (4) a step.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 3, the powder metallurgy oil retaining bearing of the present embodiment includes a bearing body 1, the bearing body 1 is in a hollow cylindrical shape, the bearing body includes a bearing inner ring and a bearing outer ring 2, an outer diameter of a cross section of the bearing outer ring 2 in a direction from one end to the other end is gradually reduced, and the bearing outer ring 2 has a step 4 along a circumferential direction thereof; the outer wall of the bearing outer ring 2 is provided with a plurality of mounting grooves 3 from one end to the other end along the axial direction, the cross section of each mounting groove 3 is semicircular, the inner diameter of the cross section of one end of each mounting groove 3 is the same as that of the other end, and at least one limiting groove is arranged in each mounting groove 3; at least one connecting groove is formed in the end face of at least one end of the bearing outer ring 2; the bearing body 1 is soaked with an oil layer.
Wherein, optimally, a plurality of mounting grooves 3 are arranged at equal intervals, and the mounting grooves 3 have four.
The powder metallurgy oil-retaining bearing of the embodiment is used for an angle grinder, as shown in fig. 1 and fig. 3, the outer diameter of the upper end to the lower end of a bearing outer ring 2 is gradually reduced, the bearing outer ring 2 is provided with steps 4 along the circumferential direction, when the bearing outer ring is connected with corresponding parts, the bearing outer ring mainly has a guiding function, the installation efficiency is improved, and the axial (to the lower end) ectopic position of the oil-retaining bearing can be avoided and even the oil-retaining bearing falls off; as shown in fig. 2, four mounting grooves 3 are formed in the bearing outer ring 2 at equal intervals along the axial direction of the bearing outer ring, the corresponding parts on the angle grinder are provided with convex parts matched with the mounting grooves 3, the mounting grooves 3 of the oil-retaining bearing are clamped with the convex parts, and the arrangement of the mounting grooves 3 can prevent the bearing from being dislocated along the circumferential direction of the bearing; meanwhile, a limiting groove is arranged in the mounting groove 3 and can be clamped with a corresponding bulge on the convex part of the angle grinder, so that the oil-retaining bearing can be effectively prevented from retreating towards the upper end and even falling off; furthermore, the end face of one end of the bearing outer ring 2 is provided with at least one connecting groove (not shown in the figure), if a plurality of oil-retaining bearings are installed on the same rotating shaft, a long positioning strip is used, one end is clamped in the connecting groove of one oil-retaining bearing, and the other end is clamped in the connecting groove of the other oil-retaining bearing, so that the connection of the two oil-retaining bearings is realized; the bearing body 1 is soaked with an oil layer, the oiliness bearing is in a non-running state, the lubricating oil is filled in the pores, when the oiliness bearing runs, the shaft rotates to generate heat due to friction, the pores are reduced due to thermal expansion, and then the lubricating oil overflows and enters the bearing gaps. After the shaft stops rotating, it cools down, the pores recover, and the lubricant is sucked back into the pores.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (3)
1. The utility model provides a powder metallurgy oil retaining bearing, includes the bearing body, the bearing body is hollow cylinder, the bearing body includes bearing inner race and bearing inner race, its characterized in that: the outer diameter of the cross section of the bearing outer ring from one end to the other end is gradually reduced, and the bearing outer ring is provided with steps along the circumferential direction; the outer wall of the bearing outer ring is provided with a plurality of mounting grooves from one end to the other end along the axial direction of the outer wall, the cross section of each mounting groove is semicircular, the inner diameter of the cross section of one end of each mounting groove is the same as that of the other end of each mounting groove, and each mounting groove is internally provided with at least one limiting groove; at least one connecting groove is formed in the end face of at least one end of the bearing outer ring; the bearing body is soaked with an oil layer.
2. The powder metallurgy oil-retaining bearing according to claim 1, wherein: the installation grooves are arranged at equal intervals.
3. The powder metallurgy oil-impregnated bearing according to claim 1 or 2, characterized in that: the mounting groove has four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921960535.8U CN210859564U (en) | 2019-11-14 | 2019-11-14 | Powder metallurgy oil-retaining bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921960535.8U CN210859564U (en) | 2019-11-14 | 2019-11-14 | Powder metallurgy oil-retaining bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210859564U true CN210859564U (en) | 2020-06-26 |
Family
ID=71287139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921960535.8U Active CN210859564U (en) | 2019-11-14 | 2019-11-14 | Powder metallurgy oil-retaining bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210859564U (en) |
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2019
- 2019-11-14 CN CN201921960535.8U patent/CN210859564U/en active Active
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