CN104864050A - Highly-efficient harmonic-wave speed reducer - Google Patents
Highly-efficient harmonic-wave speed reducer Download PDFInfo
- Publication number
- CN104864050A CN104864050A CN201510234135.9A CN201510234135A CN104864050A CN 104864050 A CN104864050 A CN 104864050A CN 201510234135 A CN201510234135 A CN 201510234135A CN 104864050 A CN104864050 A CN 104864050A
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- CN
- China
- Prior art keywords
- wave
- generator
- speed reducer
- harmonic
- wave speed
- 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.)
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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
- F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
- F16H13/02—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members without members having orbital motion
- F16H13/04—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members without members having orbital motion with balls or with rollers acting in a similar manner
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Retarders (AREA)
Abstract
The invention discloses a highly-efficient harmonic-wave speed reducer. The highly-efficient harmonic-wave speed reducer comprises a wave generator, flexible bearings, a flexible wheel and a rigid wheel. The wave generator comprises a body having smaller coefficient of thermal expansion. Covering layers having larger coefficients of thermal expansion are arranged in regions at two ends of an elliptic short shaft of the wave generator on the surface of the body having smaller coefficient of thermal expansion.The harmonic-wave speed reducer has following beneficial effects: tightening force of the flexible bearings is increased at more than 2000 turns/minute of input rotating speed, thereby greatly avoiding the occurrence that damping is stirred by lubricating grease; and efficiency of the overall harmonic-wave speed reducer is increased by 3% to 5%.
Description
Technical field
The present invention relates to a kind of harmonic wave speed reducing machine.
Background technique
It is high that harmonic wave speed reducing machine has precision, and volume is little, the feature that bearing torque is high, is widely used in industrial robot field.Fig. 1 is conventional harmonic reducer gear engagement schematic diagram.At the periphery of elliptical wave generator 1 assembling flexible bearing 2.The inner ring of flexible bearing 2 is fixed on wave-generator, and outer ring realizes resiliently deformable by ball.Wave-generator 1 is usually used as input end.Flexbile gear 3 is divided into cup type and carnival hat type, usually used as output terminal according to shape difference.Firm wheel 4 is in toroidal, and inner ring has gear, has more 2 teeth, usually used as fixed end than flexbile gear external tooth.Flexbile gear 3 is bent to ellipse by wave-generator 1, shaft portion flexbile gear 3 external tooth with just take turns 4 internal tooths and engage, at end shaft portion then completely and firm to take turns 4 internal tooths be renunciation.Load torque is transmitted by the gears meshing of shaft portion.
Fig. 2 is the combination schematic diagram of wave-generator and flexible bearing.At the stub portion of wave-generator 1, the ball of flexible bearing 2 and the pretightening force deficiency of Internal and external cycle raceway, cause ball to be in low speed rotation state, cause the stirring damping of lubricant grease to increase, thus affect transmission efficiency.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, the high efficiency harmonic wave speed reducing machine that transmission efficiency is high.
Technical solution of the present invention is:
A kind of high efficiency harmonic wave speed reducing machine, comprises wave-generator, flexible bearing, flexbile gear, just takes turns, it is characterized in that: wave-generator comprises the body of less thermal expansion coefficient; On the surface of the body of less thermal expansion coefficient, oval minor axis two end regions of wave-generator, the coating of larger expansion coefficient material is set.
It is 40 ° ~ 60 ° with 1/2 size of angle between two end points of one end in oval minor axis two end regions of wave-generator.
Harmonic wave speed reducing machine of the present invention, can when input speed be greater than 2000 revs/min, and by improving the fastening force of flexible bearing, greatly reduce the generation that lubricant grease stirs damping, harmonic wave speed reducing machine whole efficiency improves 3% ~ 5%.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is conventional harmonic reducer gear engagement schematic diagram.
Fig. 2 is the combination schematic diagram of conventional wave generator and flexible bearing.
Fig. 3 is structural representation of the present invention.
A kind of high efficiency harmonic wave speed reducing machine, comprise wave-generator 8, flexible bearing 9, flexbile gear, just take turns, wave-generator comprises the body 7 of less thermal expansion coefficient; On the surface of the body of less thermal expansion coefficient, oval minor axis two end regions of wave-generator, the coating 5,6 of larger expansion coefficient material is set.
It is 40 ° ~ 60 ° with 1/2 size D of angle between two end points of one end in oval minor axis two end regions of wave-generator.
Wave-generator is as harmonic wave speed reducing machine input end, when High Rotation Speed inputs, minor axis two end regions 5 and region 6 part create the thermal expansion larger than region 7, except the minority ball 2A of minor axis of wave generator two ends, other ball 2B is in tightening state, material is thus formed the Interlock Status that flexible bearing rotates together with wave-generator.When wave-generator High Rotation Speed inputs, due to the high speed rotary motion of ball 2B, greatly reduce the generation that lubricant grease stirs damping, thus prevent because lubricant grease stirs the decline that damping causes torque transmission coefficient.
Claims (2)
1. a high efficiency harmonic wave speed reducing machine, comprises wave-generator, flexible bearing, flexbile gear, just takes turns, it is characterized in that: wave-generator comprises the body of less thermal expansion coefficient; On the surface of the body of less thermal expansion coefficient, oval minor axis two end regions of wave-generator, the coating of larger expansion coefficient material is set.
2. high efficiency harmonic wave speed reducing machine according to claim 1, is characterized in that: be 40 ° ~ 60 ° with 1/2 size of angle between two end points of one end in oval minor axis two end regions of wave-generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234135.9A CN104864050A (en) | 2015-05-11 | 2015-05-11 | Highly-efficient harmonic-wave speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234135.9A CN104864050A (en) | 2015-05-11 | 2015-05-11 | Highly-efficient harmonic-wave speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104864050A true CN104864050A (en) | 2015-08-26 |
Family
ID=53910104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510234135.9A Pending CN104864050A (en) | 2015-05-11 | 2015-05-11 | Highly-efficient harmonic-wave speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104864050A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202509B1 (en) * | 1998-07-24 | 2001-03-20 | Ims Morat Soehne Gmbh | Corrugated gear with improved pulsator |
| CN101029676A (en) * | 2006-03-01 | 2007-09-05 | 本田技研工业株式会社 | Harmonic gear drive |
| US20090038434A1 (en) * | 2007-08-08 | 2009-02-12 | Masaru Kobayashi | Wave generator, wave gear device, and method of preventing reduction in efficiency of wave gear device |
| CN102392881A (en) * | 2011-07-12 | 2012-03-28 | 潘永辉 | Harmonic transmission reducer with short cylinder flexible wheel |
| CN202914703U (en) * | 2012-09-14 | 2013-05-01 | 锕玛科技股份有限公司 | Clearance compensation structure of harmonic transmission device |
| US20140224050A1 (en) * | 2013-02-11 | 2014-08-14 | California Institute Of Technology | Systems and methods for implementing bulk metallic glass-based strain wave gears and strain wave gear components |
| CN204647188U (en) * | 2015-05-11 | 2015-09-16 | 上海鑫君传动科技有限公司 | High efficiency harmonic wave speed reducing machine |
-
2015
- 2015-05-11 CN CN201510234135.9A patent/CN104864050A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202509B1 (en) * | 1998-07-24 | 2001-03-20 | Ims Morat Soehne Gmbh | Corrugated gear with improved pulsator |
| CN101029676A (en) * | 2006-03-01 | 2007-09-05 | 本田技研工业株式会社 | Harmonic gear drive |
| US20090038434A1 (en) * | 2007-08-08 | 2009-02-12 | Masaru Kobayashi | Wave generator, wave gear device, and method of preventing reduction in efficiency of wave gear device |
| CN102392881A (en) * | 2011-07-12 | 2012-03-28 | 潘永辉 | Harmonic transmission reducer with short cylinder flexible wheel |
| CN202914703U (en) * | 2012-09-14 | 2013-05-01 | 锕玛科技股份有限公司 | Clearance compensation structure of harmonic transmission device |
| US20140224050A1 (en) * | 2013-02-11 | 2014-08-14 | California Institute Of Technology | Systems and methods for implementing bulk metallic glass-based strain wave gears and strain wave gear components |
| CN204647188U (en) * | 2015-05-11 | 2015-09-16 | 上海鑫君传动科技有限公司 | High efficiency harmonic wave speed reducing machine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |