CN203743324U - Pure-roller needle meshing RV speed reducer - Google Patents
Pure-roller needle meshing RV speed reducer Download PDFInfo
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- CN203743324U CN203743324U CN201420139218.0U CN201420139218U CN203743324U CN 203743324 U CN203743324 U CN 203743324U CN 201420139218 U CN201420139218 U CN 201420139218U CN 203743324 U CN203743324 U CN 203743324U
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- speed reducer
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- needle roller
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- tooth
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Abstract
The utility model discloses a pure-roller needle meshing RV speed reducer, belongs to the technical field of mechanical transmission and relates to a planetary transmission speed reducer. The pure-roller needle meshing RV speed reducer comprises a planetary transmission mechanism and a shell thereof, one end of an input shaft is provided with a bearing, and the outer circle of the bearing is matched with the central hole of a front cover; one end of a crankshaft is provided with a conical roller bearing, the outer circle of the conical roller bearing is in interference fit with a through hole, and the lengthwise head face of a front seat is provided with an angular contact ball bearing matched with the shell; an RV tooth disc is in interference fit with the crankshaft through a cylindrical roller bearing; three through holes are uniformly distributed at four sides of the central hole of a rear seat, the other end of the crankshaft is provided with a spline for fixing a planetary gear, the inner side of the spline is provided with a conical roller bearing of which the outer circle is in interference fit with the through holes, and the lengthwise head face of the rear seat thereof is provided with an angular contact ball bearing matched with the shell; a non-cycloidal tooth socket is arranged along each of the inner circumference of the shell and the outer circumference of the RV tooth disc, and all the roller needles and RV tooth roller needles are located in a space formed by the non-cycloidal tooth socket of the inner circumference of the shell and the non-cycloidal tooth socket of the outer circumference of the RV tooth disc. The pure-roller needle meshing RV speed reducer is used for the mechanical transmission speed reduction.
Description
Technical field
The utility model belongs to mechanical transmissioning technology field, particularly Gear Planet Transmission speed reducer.
Background technique
At present, RV speed reducer is a kind of secondary or multistage planet transmission, has the performance characteristics such as large speed ratio, high efficiency, low noise, shock-resistant, the life-span is long.Opposing parallel shaft drive and NGW Gear Planet Transmission, RV speed reducer volume is little, lightweight, has been widely used in all trades and professions such as transport, metallurgy, mine, petrochemical industry.Traditional RV speed reducer final stage transmission often adopts curtate epicycloid and pin tooth engagement driving, substantially be all a kind of gearing based on cycloid wheel transmission principle, due to Cycloid tooth profile processing difficulties, accuracy of manufacturing requires high, cause high expensive, meanwhile, too conservative on Selection of Bearings, be unfavorable for further reducing of complete machine dimension and weight.Thus, traditional RV speed reducer has very large room for improvement, and internal structure and overall performance all exist further optimization space.
Summary of the invention
The purpose of this utility model is to provide a kind of pure needle roller engagement RV speed reducer, and it can overcome traditional cycloid wheel processing difficulties, high in cost of production problem effectively.It is that the basis of balancing point wheel transmission is showed and dissolved a kind of new engagement system, adopts that the RV speed reducer of this engagement system has that big speed ratio, highi degree of accuracy, high rigidity, low noise, volume are little, lightweight, the excellent specific property such as smooth running and low cost of manufacture.Meanwhile, break through traditional RV speed reducer radial dimension restriction, further reduce speed reducer complete machine size, alleviate speed reducer complete machine weight.
The purpose of this utility model is achieved through the following technical solutions:
A kind of pure needle roller engagement RV speed reducer theory of constitution is that input shaft imports power into, and input shaft is simultaneously as sun gear, and what engage with it is several rows star-wheel, and planet wheel not only revolves round the sun but also do rotation in bent axle by splined.Comprise epicyclic transmission mechanism and housing thereof, one end of input shaft is provided with the bearing that outer ring coordinates with the center hole of protecgulum; The center hole of front stall is uniform three through holes around, and one end of bent axle is provided with tapered roller bearing, its outer ring and through hole interference fit, and the radial end face of front stall is provided with the angular contact ball bearing coordinating with housing; RV fluted disc connects by roller bearing interference fit with bent axle; The center hole of back seat is uniform three through holes around, and the other end of bent axle is provided with fixing planetary spline, and spline inner side is provided with the tapered roller bearing of outer ring and described through hole interference fit, and the radial end face of its back seat is provided with the angular contact ball bearing coordinating with housing; Be provided with without cycloid gullet along housing inner circumference, RV fluted disc excircle is provided with without cycloid gullet, and needle roller and RV tooth needle roller are all arranged in the space forming without cycloid gullet without cycloid gullet and RV fluted disc excircle of housing inner circumference.
The size of described RV tooth needle roller is taking corresponding cycloid wheel evagination part flank profil as target approaches curve.
Between described two RV fluted discs, be provided with spacer ring.
Described bearing is by back-up ring and protecgulum axially locating.
Described front stall center hole is fixing screw hole and the positioning pin hole of uniform and back seat around.
Described bent axle is provided with tapered roller bearing that can pretension, and two RV fluted discs are housed in the middle of bent axle, and RV fluted disc and housing are done side set motion by needle roller transmission, and this motion is also the compound motion of revolution and rotation.Bent axle and forward and backward seat are connected, and double as output mechanism, output RV fluted disc spinning motion, and this gearing down principle essence is few differential gear transmission of sealing.
Described RV tooth needle roller is of a size of using the traditional Cycloid tooth profile of correspondence as aim curve, the size of optimizing after approaching through genetic algorithm, between whole RV tooth needle rollers after optimization and housing needle roller, amount of interference and magnitude of interference are all controlled in 10 μ m, this without the pure needle roller engagement of guide RV speed reducer smooth running, noise is little.
Between described housing and forward and backward seat, bearing be without inner ring angular contact ball bearing, and forward and backward respectively as the raceway of rolling element; Bent axle rotary arm bearing adopts cylindrical roller bearing without inner ring, has further reduced the radial dimension of speed reducer, has improved efficiency of assembling simultaneously.
Described RV profile of tooth is cylinder groove form, and needle roller is directly plugged in teeth groove.Described housing is also Cylinder Gear flute profile formula, and directly plug-in mounting needle roller needs to carry out interval according to velocity ratio and intensity and takes out tooth.
Described bent axle tapered roller bearing needs adjustment ring can be housed according to pretension, to reach pretension effect.The utility model advantage beneficial effect is compared with prior art:
The utility model has not only possessed the feature of general cycloid wheel transmission, and has the series of advantages such as volume is little, lightweight, gear range is large, precision stability good, efficiency is high, stable drive.There is much higher fatigue life and rigidity compared with harmonic driving conventional in robot, and backhaul stable accuracy, unlike harmonic driving, along with the growth of service time, kinematic accuracy will significantly reduce.
RV tooth needle roller boundary dimension Using Genetic Optimization Algorithm is approached Cycloid tooth profile, maximum interference amount and amount of interference that RV tooth needle roller after optimization engages with pin wheel housing needle roller are all controlled at less scope, thereby the utility model transmission is stable, noise is little.
RV tooth needle roller adopts without guide form, bent axle rotary arm bearing adopts cylindrical roller bearing without inner ring, front and back seat is respectively as angular contact ball bearing rolling element raceway, and this series of improving measures makes the utility model less in size, and there has been further breakthrough the lighter aspect of quality.
RV tooth has replaced the processing of traditional roll flute, easy to process, and low cost of manufacture is maintained simple and conveniently simultaneously, can directly replace the needle roller wearing and tearing, and more traditional cycloid transmission RV speed reducer has larger cost advantage.Engage RV speed reducer in the development trend that has replacement harmonic driving and traditional cycloid wheel transmission for robot in speed reducer without the pure needle roller of guide.
Brief description of the drawings
Fig. 1 is B-B sectional view of the present utility model
Fig. 2 is A-A sectional view of the present utility model
Fig. 3 is back seat left view
Fig. 4 is back seat right elevation
Fig. 5 is front stall left view
Fig. 6 is front stall right elevation
Fig. 7 is input shaft and planetary pinion mesh schematic representation
Embodiment
Below by accompanying drawing, the utility model is described further:
A kind of pure needle roller engagement RV speed reducer theory of constitution is that input shaft 18 imports power into, and input shaft 18 is simultaneously as sun gear, and what engage with it is planet wheel 17, and planet wheel 17 not only revolves round the sun but also do rotation in bent axle 15 by splined.The utility model comprises epicyclic transmission mechanism and housing 9 thereof, and one end of input shaft 18 is provided with the bearing 4 that outer ring coordinates with the center hole of protecgulum; The center hole of front stall 7 is uniform three through holes 26 around, and one end of bent axle 15 is provided with tapered roller bearing 13, its outer ring and through hole 26 interference fit, and the radial end face of front stall 7 is provided with the angular contact ball bearing 8 coordinating with housing 9; RV fluted disc 21 is by roller bearing 14 and bent axle 15 interference fit; The center hole of back seat 12 is uniform three through holes, therebetween uniform screw hole 22 around; The other end of bent axle 15 is provided with the spline of fixing planetary pinion 17, and spline inner side is provided with the tapered roller bearing 13 of outer ring and described through hole interference fit, and the radial end face of back seat 12 is provided with the angular contact ball bearing 8 coordinating with housing 9; Be provided with without cycloid gullet along housing 9 inner circumferences, RV fluted disc 21 excircles are provided with without cycloid gullet, and needle roller 10 and RV tooth needle roller 20 are all arranged in the space forming without cycloid gullet without cycloid gullet and RV fluted disc 21 excircles of housing 9 inner circumferences.
The size of described RV tooth needle roller 20 is taking corresponding cycloid wheel evagination part flank profil as aim curve.
Between described two RV fluted discs 21, be provided with spacer ring 19.
Described bearing 4, by back-up ring 5 and protecgulum 6 axially locating, is provided with seal ring 3 between input shaft 18 and protecgulum 6.
Described front stall 7 center holes are fixing screw hole 27 and the positioning pin hole 25 of uniform and back seat 12 around, and front stall 7 is fixing with back seat 12 by three pieces of screws 1 and locating stud 2.Between back seat 12 and housing 9, be also provided with lip envelope 11.
Described bent axle 15 is provided with tapered roller bearing 13 that can pretension, and two RV fluted discs 21 are housed in the middle of bent axle 15, and RV fluted disc 21 is done side set motion with housing 9 by needle roller transmission, and this motion is also revolution and the compound motion of rotation.Bent axle 15 is connected by tapered roller bearing 13 with front stall 7, back seat 12, doubles as output mechanism, output RV tooth spinning motion, and this gearing down principle essence is few differential gear transmission of sealing.
Described RV tooth needle roller 20 is of a size of using the traditional Cycloid tooth profile of correspondence as aim curve, the size of optimizing after approaching through genetic algorithm, between whole RV tooth needle rollers 20 after optimization and housing 9 needle rollers 10, amount of interference and magnitude of interference are all controlled in 10 μ m, this is without the pure needle roller engagement of guide RV speed reducer smooth running, and noise is little.
Between described housing 9 and front and back seat, bearing is without inner ring angular contact ball bearing 8, and front and back seat is respectively as the raceway of rolling element; Bent axle rotary arm bearing adopts cylindrical roller bearing without inner ring 14, has further reduced the radial dimension of speed reducer, has improved efficiency of assembling simultaneously.
Described RV profile of tooth is cylinder groove form, and needle roller 20 is directly plugged in teeth groove.Described housing is also Cylinder Gear flute profile formula, and directly plug-in mounting needle roller 10 needs to carry out interval according to velocity ratio and intensity and takes out tooth.
Described bent axle tapered roller bearing 13 needs adjustment ring can be housed according to pretension, to reach pretension effect.
Described RV tooth 21 is installed with 180 ° of phase differences, and input shaft 18 is installed on protecgulum 6 through rolling bearing 4, and back-up ring 5 is fixed on the axially locating that is used for realizing described rolling bearing 4 on protecgulum 6.Described input shaft 18 imports power into, engages with planetary pinion 17, and power engaging between input shaft 18 and planetary pinion 17 reaches described bent axle 15, and bent axle 15 drives two RV fluted discs 21, and RV fluted disc 21 drives RV tooth needle roller 20 to engage with the needle roller 10 of housing 9.Between two RV fluted discs 21, spacer ring 19 is housed, RV tooth needle roller 20 is realized axially locating by spacer ring 19.If fixed installation flange, forward and backward seat is by the rotation vector of output RV fluted disc 21; If fixing forward and backward seat, mounting flange is as output flange, the rotation vector of output housing 9.
Claims (5)
1. a pure needle roller engagement RV speed reducer, comprises epicyclic transmission mechanism and housing thereof (9), it is characterized in that: one end of input shaft (18) is provided with the bearing (4) of the center hole interference fit of outer ring and protecgulum (6); The center hole of front stall (7) is uniform three through holes (26) around, one end of bent axle (15) is provided with tapered roller bearing (13), its outer ring and through hole (26) interference fit, the radial end face of front stall (7) is provided with the angular contact ball bearing (8) coordinating with housing (9); RV fluted disc (21) connects by roller bearing (14) interference fit with bent axle (15); The center hole of back seat (12) is uniform three through holes around, the other end of bent axle (15) is provided with the spline of fixing planetary pinion (17), spline inner side is provided with the tapered roller bearing (13) of outer ring and described through hole interference fit, and the radial end face of back seat (12) is provided with the angular contact ball bearing (8) coordinating with housing (9); Be provided with without cycloid gullet along housing (9) inner circumference, RV fluted disc (21) excircle is provided with without cycloid gullet; Needle roller (10) and RV tooth needle roller (20) are all arranged in the space forming without cycloid gullet without cycloid gullet and RV fluted disc (21) excircle of housing (9) inner circumference.
2. the pure needle roller engagement of one according to claim 1 RV speed reducer, is characterized in that: the size of RV tooth needle roller (20) is taking corresponding cycloid wheel evagination part flank profil as target approaches curve.
3. the pure needle roller engagement of one according to claim 1 RV speed reducer, is characterized in that: between two RV fluted discs (21), be provided with spacer ring (19).
4. the pure needle roller engagement of one according to claim 1 RV speed reducer, is characterized in that: described bearing (4) is by back-up ring (5) and protecgulum (6) axially locating.
5. the pure needle roller engagement of one according to claim 1 RV speed reducer, is characterized in that: described front stall (7) center hole is fixing screw hole (27) and the positioning pin hole (25) of uniform and back seat (12) around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139218.0U CN203743324U (en) | 2014-03-25 | 2014-03-25 | Pure-roller needle meshing RV speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139218.0U CN203743324U (en) | 2014-03-25 | 2014-03-25 | Pure-roller needle meshing RV speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743324U true CN203743324U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420139218.0U Expired - Fee Related CN203743324U (en) | 2014-03-25 | 2014-03-25 | Pure-roller needle meshing RV speed reducer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196966A (en) * | 2014-08-11 | 2014-12-10 | 武汉市精华减速机制造有限公司 | High-accuracy rotation-joint speed reducer |
| CN104712710A (en) * | 2015-03-23 | 2015-06-17 | 南通振康焊接机电有限公司 | High-performance structure RV reduction machine |
| CN104847873A (en) * | 2015-05-18 | 2015-08-19 | 南通振康焊接机电有限公司 | Fully sealed integrated RV speed reducer |
| CN105508515A (en) * | 2016-02-01 | 2016-04-20 | 武汉市精华减速机制造有限公司 | Coaxial direct-connection speed reducer |
| CN106763522A (en) * | 2015-11-20 | 2017-05-31 | 广州市增城恒亿机械厂 | Planet cycloid speed reducer |
| CN107165984A (en) * | 2016-03-07 | 2017-09-15 | 纳博特斯克有限公司 | Geared system |
| CN107299964A (en) * | 2016-04-14 | 2017-10-27 | 纳博特斯克有限公司 | Geared system |
| CN108381537A (en) * | 2018-03-01 | 2018-08-10 | 芜湖市海联机械设备有限公司 | A kind of special RV speed reducers of robot |
| CN110125974A (en) * | 2019-06-05 | 2019-08-16 | 南通振康机械有限公司 | A kind of single-motor double speed reducer robot joint structure |
| CN110131361A (en) * | 2019-06-12 | 2019-08-16 | 南通振康机械有限公司 | A kind of all-sealed one-piece type deceleration device |
| CN110185748A (en) * | 2019-06-05 | 2019-08-30 | 南通振康机械有限公司 | Integral type robot joint structure |
| CN110966355A (en) * | 2019-11-20 | 2020-04-07 | 苏州大学 | Gear-needle dual-mode meshing small-tooth-difference planetary gear pair and precision speed reducer |
-
2014
- 2014-03-25 CN CN201420139218.0U patent/CN203743324U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196966A (en) * | 2014-08-11 | 2014-12-10 | 武汉市精华减速机制造有限公司 | High-accuracy rotation-joint speed reducer |
| CN104712710A (en) * | 2015-03-23 | 2015-06-17 | 南通振康焊接机电有限公司 | High-performance structure RV reduction machine |
| CN104847873A (en) * | 2015-05-18 | 2015-08-19 | 南通振康焊接机电有限公司 | Fully sealed integrated RV speed reducer |
| CN106763522A (en) * | 2015-11-20 | 2017-05-31 | 广州市增城恒亿机械厂 | Planet cycloid speed reducer |
| CN105508515A (en) * | 2016-02-01 | 2016-04-20 | 武汉市精华减速机制造有限公司 | Coaxial direct-connection speed reducer |
| CN107165984A (en) * | 2016-03-07 | 2017-09-15 | 纳博特斯克有限公司 | Geared system |
| CN107299964A (en) * | 2016-04-14 | 2017-10-27 | 纳博特斯克有限公司 | Geared system |
| CN107299964B (en) * | 2016-04-14 | 2022-08-30 | 纳博特斯克有限公司 | Gear device |
| CN108381537A (en) * | 2018-03-01 | 2018-08-10 | 芜湖市海联机械设备有限公司 | A kind of special RV speed reducers of robot |
| CN110125974A (en) * | 2019-06-05 | 2019-08-16 | 南通振康机械有限公司 | A kind of single-motor double speed reducer robot joint structure |
| CN110185748A (en) * | 2019-06-05 | 2019-08-30 | 南通振康机械有限公司 | Integral type robot joint structure |
| CN110125974B (en) * | 2019-06-05 | 2022-02-22 | 南通振康机械有限公司 | Single-motor double-speed reducer robot joint structure |
| CN110131361A (en) * | 2019-06-12 | 2019-08-16 | 南通振康机械有限公司 | A kind of all-sealed one-piece type deceleration device |
| CN110966355A (en) * | 2019-11-20 | 2020-04-07 | 苏州大学 | Gear-needle dual-mode meshing small-tooth-difference planetary gear pair and precision speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151214 Address after: Cold water village Peng Nan Zhen 629100 Suining city Sichuan province Pengxi county 4 agency No. 11 Patentee after: Li Zhaoting Address before: 610031 Sichuan City, Chengdu Province, No. two North Ring Road, No. 111 Patentee before: Li Xin Patentee before: Wen Mingliang Patentee before: Wang Jian |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160802 Address after: 621000 Mianyang city of Sichuan Province Branch Innovation Center Building 8, No. 313 Patentee after: SICHUAN AOSITING TECHNOLOGY Co.,Ltd. Address before: Cold water village Peng Nan Zhen 629100 Suining city Sichuan province Pengxi county 4 agency No. 11 Patentee before: Li Zhaoting |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |