CN219712099U - Oldham coupling - Google Patents
Oldham coupling Download PDFInfo
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- CN219712099U CN219712099U CN202321243416.7U CN202321243416U CN219712099U CN 219712099 U CN219712099 U CN 219712099U CN 202321243416 U CN202321243416 U CN 202321243416U CN 219712099 U CN219712099 U CN 219712099U
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- 238000010168 coupling process Methods 0.000 title claims abstract description 71
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 71
- 230000008878 coupling Effects 0.000 title claims abstract description 64
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000005096 rolling process Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an Oldham coupling which comprises a first half coupling and a second half coupling, wherein a middle disc is arranged between the first half coupling and the second half coupling, two sides of the middle disc are respectively provided with a first convex tooth and a second convex tooth which are mutually perpendicular, the first half coupling is provided with a first groove matched with the first convex tooth, and the second half coupling is provided with a second groove matched with the second convex tooth; be provided with a plurality of first balls on the first cam, the both sides of first ball and the inner wall contact of first recess are provided with a plurality of second balls on the second cam, the both sides of second ball and the inner wall contact of second recess. According to the Oldham coupling provided by the utility model, the sliding friction between the first ball and the first half coupling and the sliding friction between the second ball and the second half coupling are changed into rolling friction, so that the friction force can be reduced, the capacity loss is reduced, the transmission efficiency is improved, the wear degree of the coupling is reduced, and the service life of the coupling is prolonged.
Description
Technical Field
The utility model relates to an Oldham coupling.
Background
The Oldham coupling consists of two half couplings with grooves on the end faces and a middle disk with teeth on both sides. The cam can slide in the groove, so that the relative displacement between the two shafts during installation and operation can be compensated.
When the oldham coupling transmits power, the middle disc and the two half couplings can generate larger friction force, so that the problems of energy loss, abrasion and the like are easily caused, the transmission efficiency is reduced, and the coupling is easy to fail.
Disclosure of Invention
The utility model mainly aims to provide an Oldham coupling, which solves the problems that the Oldham coupling generates larger friction force when transmitting power, is easy to cause energy loss and abrasion, reduces transmission efficiency and is easy to fail.
The aim of the utility model can be achieved by adopting the following technical scheme:
the cross slide block coupler comprises a first half coupler and a second half coupler, wherein a middle disc is arranged between the first half coupler and the second half coupler, a first convex tooth and a second convex tooth which are perpendicular to each other are respectively arranged on two sides of the middle disc, a first groove matched with the first convex tooth is formed in the first half coupler, and a second groove matched with the second convex tooth is formed in the second half coupler;
the first convex teeth are provided with a plurality of first balls, two sides of each first ball are in contact with the inner wall of each first groove, the second convex teeth are provided with a plurality of second balls, and two sides of each second ball are in contact with the inner wall of each second groove.
Preferably, the width value of the first tooth is smaller than the diameter value of the first ball, and the width value of the second tooth is smaller than the diameter value of the second ball.
Preferably, a first through groove for installing the first ball is formed in the first cam, and a second through groove for installing the second ball is formed in the second cam.
Preferably, the first ball is provided with a first through hole, a first connecting column penetrating through the first through hole is arranged in the first through groove, the second ball is provided with a second through hole, and a second connecting column penetrating through the second through hole is arranged in the second through groove.
Preferably, two sides of the first connecting column are respectively connected to the inner wall of the first convex tooth and the middle plate, and two sides of the second connecting column are respectively connected to the inner wall of the second convex tooth and the middle plate.
Preferably, the first balls are seven, seven first balls are arranged in the first through groove and distributed at intervals along the length direction of the first through groove, the second balls are seven, and seven second balls are arranged in the second through groove and distributed at intervals along the length direction of the second through groove.
Preferably, the first half coupling is provided with a first key slot, and the second half coupling is provided with a second key slot.
The beneficial technical effects of the utility model are as follows:
according to the Oldham coupling provided by the utility model, the sliding friction between the first ball and the first half coupling and the sliding friction between the second ball and the second half coupling are changed into rolling friction, so that the friction force can be reduced, the capacity loss is reduced, the transmission efficiency is improved, the wear degree of the coupling is reduced, and the service life of the coupling is prolonged.
Drawings
FIG. 1 is a schematic view of a coupling structure according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a coupling according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of an intermediate disk structure according to an embodiment of the present utility model;
fig. 4 is a schematic view of the structure of the middle plate (without balls) according to the embodiment of the present utility model.
In the figure: 1-first half coupling, 2-second half coupling, 3-middle plate, 4-first teeth, 5-second teeth, 6-first grooves, 7-second grooves, 8-first balls, 9-second balls, 10-first through groove, 11-second through groove, 12-first through hole, 13-first connecting column, 14-second through hole, 15-second connecting column, 16-first key groove, 17-second key groove.
Detailed Description
In order to make the technical solution of the present utility model more clear and obvious to those skilled in the art, the present utility model will be described in further detail with reference to examples and drawings, but the embodiments of the present utility model are not limited thereto.
As shown in fig. 1 to 4, the oldham coupling provided in this embodiment includes a first half coupling 1 and a second half coupling 2, a middle plate 3 is disposed between the first half coupling 1 and the second half coupling 2, two sides of the middle plate 3 are respectively provided with a first tooth 4 and a second tooth 5 perpendicular to each other, the first half coupling 1 is provided with a first groove 6 matched with the first tooth 4, and the second half coupling 2 is provided with a second groove 7 matched with the second tooth 5;
be provided with a plurality of first balls 8 on the first cam 4, the both sides of first ball 8 and the inner wall contact of first recess 6 are provided with a plurality of second balls 9 on the second cam 5, the both sides of second ball 9 and the inner wall contact of second recess 7 become rolling friction with the sliding friction between first ball 8 and first half shaft coupling 1, second ball 9 and the second half shaft coupling 2, can reduce frictional force, reduce the loss of ability, improved transmission efficiency, reduced the degree of wear of shaft coupling, prolonged the life of shaft coupling.
In this embodiment, as shown in fig. 1, the width of the first tooth 4 is smaller than the diameter of the first ball 8, and the width of the second tooth 5 is smaller than the diameter of the second ball 9, so that the first ball 8 and the second ball 9 can contact the inner walls of the first groove 6 and the second groove 7, respectively, and the first half coupling 1 and the second half coupling 2 can perform rolling friction with the middle plate 3.
In this embodiment, as shown in fig. 1, a first through groove 10 for installing a first ball 8 is provided on the first cam 4, a second through groove 11 for installing a second ball 9 is provided on the second cam 5, a first through hole 12 is provided on the first ball 8, a first connecting post 13 penetrating through the first through hole 12 is provided in the first through groove 10, a second through hole 14 is provided on the second ball 9, a second connecting post 15 penetrating through the second through hole 14 is provided in the second through groove 11, positions of the first ball 8 and the second ball 9 are relatively fixed, two sides of the first connecting post 13 are respectively connected on the inner wall of the first cam 4 and the middle plate 3, two sides of the second connecting post 15 are respectively connected on the inner wall of the second cam 5 and the middle plate 3, and when rolling, the first ball 8 and the second ball 9 also rotate around the first connecting post 13 and the second connecting post 15 respectively, so that the first ball 8 and the second ball 9 cannot shift in the working process of the coupling.
In this embodiment, as shown in fig. 1, seven first balls 8 are disposed in the first through groove 10 and are distributed at intervals along the length direction thereof, seven second balls 9 are disposed in the second through groove 11 and are distributed at intervals along the length direction thereof, so that friction is reduced, and sufficient friction force of the coupling is ensured to work.
In this embodiment, as shown in fig. 2, a first key groove 16 is provided in the first half coupling 1, and a second key groove 17 is provided in the second half coupling 2, so that the first half coupling 1 and the second half coupling 2 are fixed to two shafts to which power needs to be transmitted, respectively.
In summary, in this embodiment, the oldham coupling provided in this embodiment changes the sliding friction between the first ball 8 and the first half coupling 1, and the sliding friction between the second ball 9 and the second half coupling 2 into rolling friction, so that the friction force can be reduced, the capacity loss can be reduced, the transmission efficiency can be improved, the wear degree of the coupling can be reduced, and the service life of the coupling can be prolonged.
The above description is merely a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art will be able to apply equivalents and modifications according to the technical solution and the concept of the present utility model within the scope of the present utility model disclosed in the present utility model.
Claims (7)
1. An Oldham coupling, characterized in that: the novel half-coupling comprises a first half-coupling (1) and a second half-coupling (2), wherein a middle disc (3) is arranged between the first half-coupling (1) and the second half-coupling (2), a first convex tooth (4) and a second convex tooth (5) which are perpendicular to each other are respectively arranged on two sides of the middle disc (3), a first groove (6) matched with the first convex tooth (4) is formed in the first half-coupling (1), and a second groove (7) matched with the second convex tooth (5) is formed in the second half-coupling (2);
be provided with a plurality of first balls (8) on first protruding tooth (4), the both sides of first ball (8) and the inner wall contact of first recess (6), be provided with a plurality of second balls (9) on second protruding tooth (5), the both sides of second ball (9) and the inner wall contact of second recess (7).
2. An oldham coupling according to claim 1, wherein: the width value of the first convex teeth (4) is smaller than the diameter value of the first balls (8), and the width value of the second convex teeth (5) is smaller than the diameter value of the second balls (9).
3. An oldham coupling according to claim 1, wherein: the first convex tooth (4) is provided with a first through groove (10) for installing a first ball (8), and the second convex tooth (5) is provided with a second through groove (11) for installing a second ball (9).
4. An oldham coupling according to claim 3 wherein: the novel ball bearing is characterized in that a first through hole (12) is formed in the first ball bearing (8), a first connecting column (13) penetrating through the first through hole (12) is arranged in the first through groove (10), a second through hole (14) is formed in the second ball bearing (9), and a second connecting column (15) penetrating through the second through hole (14) is arranged in the second through groove (11).
5. The oldham coupling according to claim 4, wherein: the two sides of the first connecting column (13) are respectively connected to the inner wall of the first convex tooth (4) and the middle disc (3), and the two sides of the second connecting column (15) are respectively connected to the inner wall of the second convex tooth (5) and the middle disc (3).
6. An oldham coupling according to claim 1, wherein: the first balls (8) are seven, seven first balls (8) are arranged in the first through grooves (10) and distributed at intervals along the length direction of the first through grooves, the second balls (9) are seven, and seven second balls (9) are arranged in the second through grooves (11) and distributed at intervals along the length direction of the second through grooves.
7. An oldham coupling according to claim 1, wherein: the first half coupler (1) is provided with a first key groove (16), and the second half coupler (2) is provided with a second key groove (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321243416.7U CN219712099U (en) | 2023-05-22 | 2023-05-22 | Oldham coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321243416.7U CN219712099U (en) | 2023-05-22 | 2023-05-22 | Oldham coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219712099U true CN219712099U (en) | 2023-09-19 |
Family
ID=87982415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321243416.7U Active CN219712099U (en) | 2023-05-22 | 2023-05-22 | Oldham coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219712099U (en) |
-
2023
- 2023-05-22 CN CN202321243416.7U patent/CN219712099U/en active Active
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