CN104791423A - RV reducer based on cycloidal gear edge shaping - Google Patents
RV reducer based on cycloidal gear edge shaping Download PDFInfo
- Publication number
- CN104791423A CN104791423A CN201510188366.0A CN201510188366A CN104791423A CN 104791423 A CN104791423 A CN 104791423A CN 201510188366 A CN201510188366 A CN 201510188366A CN 104791423 A CN104791423 A CN 104791423A
- Authority
- CN
- China
- Prior art keywords
- needle roller
- roller pin
- wheel
- cycloidal
- shaping
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses an RV reducer based on cycloidal gear edge shaping. The RV reducer comprises a roller pin and two cycloidal gears; the roller pin is in the shape of a waist drum through special microscale shaping, the parts, making contact with the roller pin, of the cycloidal gears are in a half-concave shape through microscale shaping, the cycloidal gears are installed in a 180-degree symmetrical mode and meshed with the roller pin. Meanwhile, the inner wall of a hole for containing the roller pin is shaped to be in a concave shape to be matched with the roller pin. According to the RV reducer based on cycloidal gear edge shaping, the structure is reasonable, the eccentric errors of an input shaft and an output shaft caused by the manufacture and assembly errors can be decreased, the geometric errors generated by cycloidal gear shaping can be decreased, the lubrication area and the contact area of the roller pin and the cycloidal gears can be increased, meanwhile, main parts can be protected, the manufacture and installation difficulty can be reduced, and the motion precision and stability of the RV reducer can be improved.
Description
Technical field
The present invention relates to precision speed reduction device field, be specifically related to a kind of RV retarder based on the correction of the flank shape of cycloid wheel edge.
Background technique
RV retarder is a kind of retarder grown up on planet-cycloid reducer basis, have that structure is simple, velocity ratio is large, output torque is large, efficiency high, be mainly used in the slow-speed of revolution, on the transmission device that high moment of torsion exports, especially increasingly extensive in the application in industrial robot field, just progressively replace simple planet-cycloid reducer.
Existing RV transmission device has some shortcomings below: 1. due to the error manufactured, install, cause the centring error of input shaft and output shaft; 2. during heavy load transmission, owing to causing ess-strain to increase after cycloid wheel stress deformation, the eccentric degree aggravation of input shaft and output shaft, kinematic accuracy reduces; 3. needle roller is when pin wheel housing is installed, and does not limit up and down, easily produces vibration & noise when running up, and industrial machine suddenly stops at work, anxious startup can produce impact force, causes needle roller and up-downgoing carrier to collide.
Lack some precision manufactureing equipment by domestic manufacturer in addition, the RV retarder reliability causing it to produce is low, galloping.
For some above-mentioned problems, how to reduce the centring error of input shaft and output shaft, reduce the gemoetric error because cycloid wheel correction of the flank shape produces, reduce and manufacture and installation difficulty, increase lubrication and area of contact, improve the difficult point that kinematic accuracy and working life are designing for manufacturing RV retarders.
Summary of the invention
Target of the present invention is to provide a kind of rational in infrastructure, smooth running, and lubricating contact is large, the RV retarder based on the correction of the flank shape of cycloid wheel edge that kinematic accuracy is high.
The RV retarder based on the correction of the flank shape of cycloid wheel edge that the present invention proposes, comprises needle roller, cycloid wheel and pin wheel housing, it is characterized in that carrying out profile correction of the flank shape to needle roller, makes it in dolioform; Carry out correction of the flank shape to cycloid wheel, cycloid wheel has two panels, and the cycloid wheel after correction of the flank shape completes is dished, and two panels cycloid wheel is 180 ° of symmetrical installations, and engages each other with needle roller; Process the needle roller groove of pin wheel housing, make needle roller groove be spill, described needle roller is positioned at needle roller groove; Input shaft connecting crank axle, crankshaft is connected row star-wheel, cycloid wheel and output shaft respectively.
The present invention is rational in infrastructure, can increase the lubrication of needle roller and cycloid wheel, area of contact, reduces the centring error of input shaft and output shaft, improves kinematic accuracy and stationarity.
Accompanying drawing explanation
Fig. 1 is RV gear reducer mechanism sketch;
Fig. 2 is pin wheel housing of the present invention, needle roller and cycloidal-pin wheel structural relation schematic diagram;
Number in the figure: 1, input shaft, 2, planet wheel, 3, crankshaft, 4, cycloid wheel, 5, needle roller, 6, output mechanism, 7, pin wheel housing.
Embodiment
The present invention is further illustrated below by embodiment.
Embodiment 1: as shown in Figure 1, and input shaft 1 is equipped with at pin wheel housing 7 center, and input shaft 1 is engaged with two crankshafts 3 by gear, and left and right crankshaft 3 uses two bearings respectively in planet wheel 2 and output mechanism 6 endoporus.It is in the cycloid wheel 4 of 180 ° that crankshaft 3 is connected to two panels phase difference by bearing.Planet wheel 2 and output mechanism 6 form rigid body with cottered joint, and needle roller 5 half to be embedded on pin wheel housing 7 in uniform pin perforation.Output mechanism 6 is promoted by the spring bearing of crankshaft 3, transmits rotating speed and moment of torsion.
As shown in Figure 2, needle roller 5 through micro-correction of the flank shape, in convex; The part that cycloid wheel 4 contacts with needle roller 5 is through special correction of the flank shape, and in dished, two panels cycloid wheel 4 in 180 ° of symmetrical installations, and engages each other with needle roller 5.Correction of the flank shape is carried out to the hole inwall that needle roller 5 is laid simultaneously, in spill, be used for coordinating with needle roller 5.
Claims (1)
1. based on a RV retarder for cycloid wheel edge correction of the flank shape, comprise needle roller, cycloid wheel and pin wheel housing, it is characterized in that carrying out profile correction of the flank shape to needle roller, make it in dolioform; Carry out correction of the flank shape to cycloid wheel, cycloid wheel has two panels, and the cycloid wheel after correction of the flank shape completes is dished, and two panels cycloid wheel is 180 ° of symmetrical installations, and engages each other with needle roller; Process the needle roller groove of pin wheel housing, make needle roller groove be spill, described needle roller is positioned at needle roller groove; Input shaft connecting crank axle, crankshaft is connected row star-wheel, cycloid wheel and output shaft respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188366.0A CN104791423A (en) | 2015-04-21 | 2015-04-21 | RV reducer based on cycloidal gear edge shaping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188366.0A CN104791423A (en) | 2015-04-21 | 2015-04-21 | RV reducer based on cycloidal gear edge shaping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104791423A true CN104791423A (en) | 2015-07-22 |
Family
ID=53556477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510188366.0A Pending CN104791423A (en) | 2015-04-21 | 2015-04-21 | RV reducer based on cycloidal gear edge shaping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104791423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090136A (en) * | 2016-08-12 | 2016-11-09 | 上海交通大学 | A kind of RV decelerator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63318318A (en) * | 1987-06-17 | 1988-12-27 | Nippon Seiko Kk | Tripod type isochronous joint using cylindrical roller |
| US5788577A (en) * | 1995-02-27 | 1998-08-04 | Ntn Corporation | Homokinetic universal joint having decreased induced thrust |
| CN1317390A (en) * | 2001-03-23 | 2001-10-17 | 陕西秦川机械发展股份有限公司 | Technology for manufacturing speed reducer |
| CN201747914U (en) * | 2010-08-24 | 2011-02-16 | 徐州科源液压有限公司 | Concave raceway needle bearing in planet transmission mechanism |
| CN201827242U (en) * | 2010-08-24 | 2011-05-11 | 瓦房店正达冶金轧机轴承有限公司 | Annular roller bearing |
| CN203703018U (en) * | 2013-12-24 | 2014-07-09 | 厦门理工学院 | Drum-shaped cycloid gear structure |
-
2015
- 2015-04-21 CN CN201510188366.0A patent/CN104791423A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63318318A (en) * | 1987-06-17 | 1988-12-27 | Nippon Seiko Kk | Tripod type isochronous joint using cylindrical roller |
| US5788577A (en) * | 1995-02-27 | 1998-08-04 | Ntn Corporation | Homokinetic universal joint having decreased induced thrust |
| CN1317390A (en) * | 2001-03-23 | 2001-10-17 | 陕西秦川机械发展股份有限公司 | Technology for manufacturing speed reducer |
| CN201747914U (en) * | 2010-08-24 | 2011-02-16 | 徐州科源液压有限公司 | Concave raceway needle bearing in planet transmission mechanism |
| CN201827242U (en) * | 2010-08-24 | 2011-05-11 | 瓦房店正达冶金轧机轴承有限公司 | Annular roller bearing |
| CN203703018U (en) * | 2013-12-24 | 2014-07-09 | 厦门理工学院 | Drum-shaped cycloid gear structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090136A (en) * | 2016-08-12 | 2016-11-09 | 上海交通大学 | A kind of RV decelerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150722 |