CN102305285B - Axle center positioning device for RV reducer - Google Patents
Axle center positioning device for RV reducer Download PDFInfo
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- CN102305285B CN102305285B CN2011102538918A CN201110253891A CN102305285B CN 102305285 B CN102305285 B CN 102305285B CN 2011102538918 A CN2011102538918 A CN 2011102538918A CN 201110253891 A CN201110253891 A CN 201110253891A CN 102305285 B CN102305285 B CN 102305285B
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- input axis
- input shaft
- positioning device
- axle center
- center positioning
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- Retarders (AREA)
- General Details Of Gearings (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses an axle center positioning device for an RV reducer. The axle center positioning device comprises an input axis; one end of the input axis is a positioning connecting end, and the other end of the input axis is a tooth-surface end; a steel sleeve is sleeved on the tooth-surface end of the input axis; the outer surface of the steel sleeve is provided with at least one spiral oil groove; the steel sleeve is sleeved with an oil bearing; and the oil bearing is matched with an inner hole of the input axis. The axle center positioning device is reasonable in structure; by the axle center positioning device for the input axis, the coaxiality of the input axis is ensured, so that the movement accuracy is improved; the oil bearing is matched with the inner hole of the input axis, and the position accuracy of a center wheel and a planet wheel is ensured; the requirement on the manufacturing accuracy of the input axis is reduced, the assembly difficulty is reduced, and the assembly speed and the assembly efficiency are improved; and the input axis runs more stably, the transmission reliability is improved, the vibration and noise of the RV reducer are reduced and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of axle centre positioning device of the RV of being used for retarder.
Background technique
Robot is with highi degree of accuracy RV transmission, and two extremely strict technical orders are arranged: one is kinematic accuracy, and error can not surpass 1 '; Two is the gap return difference, according to varying in size of RV retarder, regulation can not surpass 1 '～1.5 '.Under the load movement situation, the total return difference that comprises the return difference that resiliently deformable causes can not surpass 6 '.
Further, as the RV retarder that robot uses, it must have high motion and positional accuracy, so just can make the paw of robot accurately reach preposition.And in practical application, owing to manufacturing, alignment error, can make the paw of robot can not very accurately reach preposition, so a key issue that will solve in the design is how to guarantee that the RV retarder has high kinematic accuracy.Kinematic accuracy is to weigh an important dynamic performance index of gear transmission quality, representes through driving error.
The driving error of RV retarder is meant that input shaft rotates when taking office the meaning angle the theoretical corner of output shaft and the angular error of actual rotational angle.By knowing forming of RV retarder,, mainly realize through the planet carrier output mechanism between input shaft transmission, Involutes Gears Transmission, cycloidal-pin wheel transmission and cycloid wheel and the output disc from being input to output.Velocity ratio between input shaft and the output shaft should be a fixed value in theory, but in fact owing to form the driving parts of RV retarder Transmitted chains, the error on accuracy of manufacturing and assembly precision changes instantaneous speed ratio, thereby causes angular errors.(Wen Bangchun. mechanical design handbook: the 2nd volume ［ M ］. Beijing: China Machine Press, 2010)
Therefore, the input shaft transmission device is one of factor that influences RV retarder kinematic accuracy.
The structure of existing RV retarder is as shown in Figure 3.One end of input shaft is a flank of tooth end, meshes with planet wheel; The other end of input shaft is the end that is located by connecting, and is connected with power input device (such as motor).This input shaft of end location that only depends on is difficult to guarantee to have high assembly precision in assembly process.Usually, in order to improve the coaxality of input shaft, must guarantee that the link position of input shaft and power input device does not become flexible, it is minimum that the fit up gap reaches.This way has not only increased the requirement to the input shaft accuracy of manufacturing greatly, has also increased assembling difficulty, reduces efficiency of assembling.In addition, the RV retarder of import is prone to produce vibration and noise when running up.The error of input shaft on assembly precision is likely one of reason that produces vibration and noise.
How to improve the coaxality of input shaft, reduce requirement simultaneously, thereby raising efficiency of assembling and kinematic accuracy are one of pendulum difficult problems in face of numerous RV retarder artificers accuracy of manufacturing and assembly precision.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, can effectively improve the axle centre positioning device that is used for the RV retarder of the coaxality of input shaft.
Technical solution of the present invention is:
A kind of axle centre positioning device that is used for the RV retarder; Comprise input shaft, an end of input shaft is the end that is located by connecting, and the other end of input shaft is a flank of tooth end; It is characterized in that: on input shaft flank of tooth end, adorn steel bushing; Outer surface at steel bushing is provided with at least one helical oil groove, oil-impregnated bearing of suit on steel bushing, and oil-impregnated bearing cooperates assembling with the input shaft endoporus.
The present invention is rational in infrastructure, and beneficial effect also is:
(1) utilizes the input shaft axle centre positioning device, guaranteed the coaxality of input shaft, thereby improve kinematic accuracy.
(2) oil-impregnated bearing cooperates assembling with the input shaft endoporus, has guaranteed the positional accuracy of central gear and planet wheel.
(3) reduced requirement, reduced assembling difficulty simultaneously, improved assembling speed and efficiency of assembling the input shaft accuracy of manufacturing.
(4) running of input shaft is more steady, has improved the reliability of transmission, has reduced the vibration and the noise of RV retarder, has prolonged operating life.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is a steel bushing outwardly deploying schematic representation.
Fig. 3 is existing RV retarder schematic representation.
1-output shaft-cup among Fig. 3; The 2-input shaft; The 3-end that is located by connecting; The 4-output shaft; The 5-planet wheel; 6-flank of tooth end; The gap of 7-input shaft and output shaft (spatial position being provided) for steel bushing and oil-impregnated bearing are installed.
Embodiment
A kind of axle centre positioning device that is used for the RV retarder comprises input shaft 8, and an end of input shaft is the end that is located by connecting; The other end of input shaft is a flank of tooth end; Dress steel bushing 9 is provided with at least one helical oil groove 11 at the outer surface of steel bushing on input shaft flank of tooth end, the lubrication effect of component when guaranteeing operation; Oil-impregnated bearing 10 of suit on steel bushing, and oil-impregnated bearing cooperates assembling with the input shaft endoporus.Oil-impregnated bearing cooperates assembling with the input shaft endoporus, has guaranteed the positional accuracy of central gear and planet wheel, reaches good transmission accuracy.
Claims (1)
1. axle centre positioning device that is used for the RV retarder; Comprise input shaft, an end of input shaft is the end that is located by connecting, and the other end of input shaft is a flank of tooth end; It is characterized in that: on input shaft flank of tooth end, adorn steel bushing; Outer surface at steel bushing is provided with at least one helical oil groove, oil-impregnated bearing of suit on steel bushing, and oil-impregnated bearing cooperates assembling with the input shaft endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102538918A CN102305285B (en) | 2011-08-30 | 2011-08-30 | Axle center positioning device for RV reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102538918A CN102305285B (en) | 2011-08-30 | 2011-08-30 | Axle center positioning device for RV reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102305285A CN102305285A (en) | 2012-01-04 |
| CN102305285B true CN102305285B (en) | 2012-11-21 |
Family
ID=45379179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102538918A Active CN102305285B (en) | 2011-08-30 | 2011-08-30 | Axle center positioning device for RV reducer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102305285B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997841B (en) * | 2012-11-26 | 2015-04-29 | 广州中国科学院先进技术研究所 | Rotary vector (RV) reducer back clearance measuring system |
| CN103821912B (en) * | 2014-02-28 | 2016-05-18 | 安徽江淮汽车股份有限公司 | A kind of driving shaft intermediate connecting shaft mounting structure |
| CN104482174B (en) * | 2014-11-10 | 2016-11-09 | 山东建筑大学 | A kind of gear box hole heart is away from positional precision compensation method |
| CN105179491A (en) * | 2015-09-24 | 2015-12-23 | 重庆洋迪机电有限公司 | Bearing support |
| CN105952779B (en) * | 2016-04-27 | 2018-03-06 | 浙江大学 | RV decelerator spindle constant pre-tension methods |
| CN109654198A (en) * | 2018-12-21 | 2019-04-19 | 佛山市罗斯特传动设备有限公司 | A kind of assembly method improving pin type planetary reducer transmission accuracy |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2688980Y (en) * | 2003-12-16 | 2005-03-30 | 魏星 | Gearing reducer with separatory cam |
| JP4782716B2 (en) * | 2007-03-20 | 2011-09-28 | 株式会社小松製作所 | Electric swivel device |
| CN201047436Y (en) * | 2007-04-10 | 2008-04-16 | 宝钢集团有限公司 | Speed reducer capable of eccentric adjusting to shaft |
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2011
- 2011-08-30 CN CN2011102538918A patent/CN102305285B/en active Active
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| Publication number | Publication date |
|---|---|
| CN102305285A (en) | 2012-01-04 |
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