CN216382427U - Light-weight high-precision RV reducer - Google Patents
Light-weight high-precision RV reducer Download PDFInfo
- Publication number
- CN216382427U CN216382427U CN202122496964.8U CN202122496964U CN216382427U CN 216382427 U CN216382427 U CN 216382427U CN 202122496964 U CN202122496964 U CN 202122496964U CN 216382427 U CN216382427 U CN 216382427U
- Authority
- CN
- China
- Prior art keywords
- flange
- gear shell
- pin
- ball
- retainer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Retarders (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a light-weight high-precision RV reducer which is provided with a pin gear shell, wherein an input flange and an output flange are sleeved on the inner side of the pin gear shell; the method comprises the following steps: the retainer is arranged between the needle gear shell and the input flange, an oil seal is arranged at the upper end of the needle gear shell, and a steel ball is embedded and arranged at the inner side of the retainer; the cycloidal gear is arranged between the input flange and the output flange, a roller pin is installed on the side of the cycloidal gear, a check ring is sleeved on the outer side of the roller pin, and a spacer is installed on the inner side of the check ring. This light weight type high accuracy RV reduction gear has cancelled two angular contact ball bearing inner and outer circles of pressure equipment between pin gear shell and input flange and the output flange, directly processes out ball bearing inner ball way on with the flange, processes ball bearing outer ball way on the pin gear shell, utilizes the installation spacer can adjust whole size chain between the flange simultaneously, guarantees the precision of assembling process.
Description
Technical Field
The utility model relates to the technical field of robots, in particular to a light-weight high-precision RV reducer.
Background
In the high accuracy drive arrangement field of robot, the motion that needs the higher reduction gear of precision to drive the robot, so the robot joint adopts the RV reduction gear more, the angular contact inner and outer lane ball bearing between needle tooth shell and the flange in the RV reduction gear is the important spare part of whole mechanism, its specific service environment and operating mode require the bearing to have high rigidity and stability, the assembling process is complicated simultaneously, the reason of structural limitation causes whole reduction gear structure great, to sum up the reason causes manufacturing cost very high, consequently, current RV reduction gear still has following shortcoming in the in-service use:
traditional structure is an angular contact ball bearing outer lane for pressure equipment respectively between pin gear shell and input flange and the output flange, because the bearing accuracy requires highly, consequently increased the cost to traditional bearing's setting has caused RV reduction gear whole bulky, thereby weight is too big, and the assembling process is complicated simultaneously, to above-mentioned problem, the urgent need is carried out the innovative design on original RV reduction gear's basis.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a light-weight high-precision RV reducer, which aims to solve the problems that the conventional structure provided by the background technology is that an angular contact ball bearing outer ring is respectively pressed between a pin gear shell and an input flange and an output flange, the cost is increased due to high precision requirement of the bearing outer ring, and the conventional bearing causes the overall volume of the RV reducer to be large, so that the weight is overlarge and the assembly process is complicated.
In order to achieve the purpose, the utility model provides the following technical scheme: a lightweight high-precision RV reducer is provided with a pin gear shell, wherein an input flange and an output flange are sleeved on the inner side of the pin gear shell;
the method comprises the following steps:
the retainer is arranged between the needle gear shell and the input flange, an oil seal is arranged at the upper end of the needle gear shell, and a steel ball is embedded and arranged at the inner side of the retainer;
the cycloidal gear is arranged between the input flange and the output flange, a roller pin is installed on the side of the cycloidal gear, a check ring is sleeved on the outer side of the roller pin, and a spacer is installed on the inner side of the check ring.
Preferably, an outer ball channel is reserved on one side, close to the steel ball, of the pin gear shell, the outer ball channel is arranged in a sunken arc shape, the outer ball channel can be tightly attached to the steel ball, extra inner and outer rings of the bearing do not need to be arranged, and the bearing function can be achieved.
Preferably, an inner ball channel is reserved on one side, close to the steel ball, of the input flange, the inner ball channel is arranged in a sunken arc shape, the inner ball channel can be tightly attached to the steel ball, extra inner and outer rings of the bearing do not need to be arranged, and the bearing function can be achieved.
Preferably, the retainer ring and the roller pin are tightly attached, the retainer ring is of an annular structure, and the retainer ring arranged between the input flange and the cycloidal gear can be used for limiting the axial position of the roller pin.
Compared with the prior art, the utility model has the beneficial effects that: according to the light-weight high-precision RV reducer, two angular contact ball bearings which are pressed between a pin gear shell and an input flange and between the pin gear shell and an output flange are eliminated, an inner ball channel of the ball bearing is directly machined on the flange, an outer ball channel of the ball bearing is machined on the pin gear shell, and meanwhile, a spacer is arranged between the flanges to adjust an integral size chain, so that the precision of an assembly process is guaranteed;
1. the press fitting process of the inner ring and the outer ring of the ball bearing is reduced, and the split type ball bearing is changed into a whole, so that the structural stability is higher, the transmission process is more stable, and the service life of the speed reducer is greatly prolonged;
2. the inner ring and the outer ring are directly processed on the pin gear shell and the flange, so that the process of press-mounting the inner ring and the outer ring of the ball bearing in assembly is reduced, the assembly difficulty is reduced, and the assembly efficiency of the RV reducer is improved;
3. the inner ring and the outer ring of the bearing are cancelled, so that the purchase cost is reduced;
4. the inner ring and the outer ring of the ball bearing are eliminated, so that enough installation space needs to be reserved for the inner ring and the outer ring of the ball bearing in the conventional speed reducer, the volume of a pin gear shell and a flange is reduced, the compactness of the structure of the speed reducer can be improved, and the purposes of reducing the size of the whole speed reducer and reducing weight are achieved.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a side view of the pin gear housing of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;
FIG. 4 is a schematic perspective view of a pin gear housing according to the present invention;
FIG. 5 is a schematic perspective view of a retainer ring according to the present invention;
fig. 6 is a schematic perspective view of the cage of the present invention.
In the figure: 1. a pin gear housing; 101. an outer lane; 2. an input flange; 201. an inner lane; 3. an output flange; 4. a holder; 5. oil sealing; 6. a cycloid wheel; 7. a steel ball; 8. a retainer ring; 9. rolling needles; 10. and (4) a spacer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a lightweight high-precision RV reducer is provided with a pin gear shell 1, wherein an input flange 2 and an output flange 3 are sleeved on the inner side of the pin gear shell 1;
the method comprises the following steps:
the retainer 4 is arranged between the needle gear shell 1 and the input flange 2, an oil seal 5 is arranged at the upper end of the needle gear shell 1, and a steel ball 7 is embedded and arranged at the inner side of the retainer 4;
the cycloidal gear 6 is arranged between the input flange 2 and the output flange 3, a roller pin 9 is installed on the side of the cycloidal gear 6, a retaining ring 8 is sleeved on the outer side of the roller pin 9, and a spacer 10 is installed on the inner side of the retaining ring 8.
An outer ball channel 101 is reserved on one side, close to the steel ball 7, of the pin gear shell 1, and the outer ball channel 101 is in a concave arc shape; an inner ball path 201 is reserved on one side, close to the steel ball 7, of the input flange 2, and the inner ball path 201 is in a concave arc shape;
the input flange 2 is provided with a ball bearing inner ball path 201 which is directly contacted with the inner side of the steel ball 7 with the retainer 4, the pin gear shell 1 is provided with a ball bearing outer ball path 101 which is directly sleeved outside the steel ball 7 with the retainer 4, the output flange 3 and the input flange 2 are similar in structure, the inner ball path 201 is directly processed and is directly contacted with the steel ball 7 with the retainer 4, two angular contact ball bearings which are pressed between the pin gear shell 1 and the input flange 2 as well as the output flange 3 are cancelled, and the two angular contact ball bearings are changed into a whole from a split body, so that the structural stability of the gear box is higher, the transmission process is more stable, and the service life of the speed reducer is greatly prolonged;
the retainer ring 8 and the roller pin 9 are tightly attached, and the retainer ring 8 is of an annular structure; the retainer ring 8 arranged between the input flange 2 and the cycloid wheel 6 can be used for limiting the axial position of the roller pin 9, and meanwhile, the spacer 10 arranged between the flanges can be used for adjusting the whole size chain, so that the precision of the assembling process is ensured.
The working principle is as follows: as shown in fig. 1-6, a ball bearing inner ball path 201 is processed on an input flange 2 of the integral RV reducer and is in direct contact with the inner side of a steel ball 7 with a retainer 4, a ball bearing outer ball path 101 is processed on a pin gear shell 1 and is directly sleeved outside the steel ball 7 with the retainer 4, a check ring 8 is installed between the input flange 2 and a cycloid wheel 6 and is used for limiting the axial position of a needle roller 9, a spacer 10 is installed between two cycloid wheels 6 and can adjust the size chain of the integral mechanism and ensure the assembly precision, an output flange 3 is similar to the input flange 2 in structure, an inner ball path 201 is directly processed and is in direct contact with the steel ball 7 with the retainer 4, a pin gear shell 1 with an outer ball path 101 is externally installed, and a framework oil seal 5 is pressed on the end faces of the pin gear shell 1 and the output flange 3 to ensure the sealing performance of the integral RV reducer mechanism;
the work and the transmission process of the whole RV reducer are not changed, the RV reducer is of the same type, but the size (the sizes of the pin gear shell 1, the flange and the like can be reduced) of the whole mechanism is greatly reduced due to the fact that the inner ring and the outer ring of the angular contact ball bearing at two ends are eliminated, and the weight is greatly reduced;
two outer rings of angular contact ball bearings pressed between the pin gear shell 1 and the input flange 2 and the output flange 3 are eliminated, an inner ball channel 201 of the ball bearing is directly machined on the flange, an outer ball channel 101 of the ball bearing is machined on the pin gear shell 1, and meanwhile, a spacer 10 is arranged between the flanges to adjust the whole size chain, so that the precision of the assembly process is ensured;
the press fitting process of the inner ring and the outer ring of the ball bearing is reduced, and the split type ball bearing is changed into a whole, so that the structural stability is higher, the transmission process is more stable, and the service life of the speed reducer is greatly prolonged; the inner ring and the outer ring are directly processed on the pin gear shell 1 and the flange, so that the process of press-mounting the inner ring and the outer ring of the ball bearing in assembly is reduced, the assembly difficulty is reduced, and the assembly efficiency of the RV reducer is improved; the inner ring and the outer ring of the bearing are cancelled, so that the purchase cost is reduced; the inner ring and the outer ring of the ball bearing are eliminated, so that enough installation space needs to be reserved for the inner ring and the outer ring of the ball bearing in the conventional speed reducer, the volume of the pin gear shell 1 and the flange is reduced, the compactness of the structure of the speed reducer can be improved, and the purposes of reducing the size of the whole speed reducer and reducing weight are achieved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (4)
1. A lightweight high-precision RV reducer is provided with a pin gear shell (1), wherein an input flange (2) and an output flange (3) are sleeved on the inner side of the pin gear shell (1);
it is characterized by comprising:
the retainer (4) is arranged between the needle gear shell (1) and the input flange (2), an oil seal (5) is installed at the upper end of the needle gear shell (1), and a steel ball (7) is embedded and installed on the inner side of the retainer (4);
the cycloidal gear (6) is arranged between the input flange (2) and the output flange (3), a roller pin (9) is installed on the side of the cycloidal gear (6), a check ring (8) is sleeved on the outer side of the roller pin (9), and a spacer (10) is installed on the inner side of the check ring (8).
2. A lightweight, high precision RV reducer according to claim 1, characterized by: an outer ball channel (101) is reserved on one side, close to the steel ball (7), of the pin gear shell (1), and the outer ball channel (101) is arranged in a concave arc shape.
3. A lightweight, high precision RV reducer according to claim 1, characterized by: an inner ball channel (201) is reserved on one side, close to the steel ball (7), of the input flange (2), and the inner ball channel (201) is arranged in a sunken arc shape.
4. A lightweight, high precision RV reducer according to claim 1, characterized by: the retainer ring (8) and the roller pin (9) are tightly attached, and the retainer ring (8) is of an annular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122496964.8U CN216382427U (en) | 2021-10-18 | 2021-10-18 | Light-weight high-precision RV reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122496964.8U CN216382427U (en) | 2021-10-18 | 2021-10-18 | Light-weight high-precision RV reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216382427U true CN216382427U (en) | 2022-04-26 |
Family
ID=81245088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122496964.8U Active CN216382427U (en) | 2021-10-18 | 2021-10-18 | Light-weight high-precision RV reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216382427U (en) |
-
2021
- 2021-10-18 CN CN202122496964.8U patent/CN216382427U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108799316B (en) | RV precision speed reducer eccentric shaft and precision speed reducer | |
| CN106352024A (en) | Single-eccentric short transmission chain speed reducer | |
| CN219366705U (en) | Novel planetary reducer | |
| CN114198464B (en) | Gear pair and nutation speed reducer | |
| CN216382427U (en) | Light-weight high-precision RV reducer | |
| CN112211960B (en) | Built-in hollow precision speed reducer for industrial robot gear | |
| CN104033565B (en) | A kind of ripple type flexbile gear structure | |
| CN111216117B (en) | Nested robot integrated joint with two-stage planetary reduction structure | |
| CN210623486U (en) | RV speed reducer | |
| CN210859728U (en) | Harmonic reducer and manipulator | |
| CN110030358B (en) | Hollow shaft harmonic reducer and mounting method thereof | |
| CN214661789U (en) | RV reducer adopting herringbone gear planetary reduction mechanism | |
| CN217207610U (en) | Harmonic speed reducer with double rigid wheels | |
| CN108374877B (en) | Bearing and harmonic integrated ultra-small harmonic reducer | |
| CN215980767U (en) | Miniaturized lightweight second grade planetary reducer | |
| CN216045250U (en) | Hollow cycloidal speed reducer for industrial heavy-duty robot | |
| CN212338044U (en) | Movable pin type cycloidal speed reducer | |
| CN113339464B (en) | Large-transmission-ratio planetary gear flexible filtering speed changer | |
| CN111853168B (en) | Built-in planetary gear reducer | |
| CN213628713U (en) | Precision speed reducer for industrial robot | |
| CN111271421A (en) | Planetary traction transmission bearing type speed reducer | |
| CN111022588B (en) | Differential cycloidal gear speed variator | |
| CN114001125A (en) | Ultra-low speed ratio high rigidity high accuracy cycloid pin gear planetary transmission reduction gear | |
| CN211259502U (en) | High-efficiency low-loss composite meshing multistage speed increasing mechanism | |
| CN110043634B (en) | Bearing type speed reducer of drivable robot with large transmission ratio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |