CN105370811A - Gear transmission device - Google Patents
Gear transmission device Download PDFInfo
- Publication number
- CN105370811A CN105370811A CN201510837086.8A CN201510837086A CN105370811A CN 105370811 A CN105370811 A CN 105370811A CN 201510837086 A CN201510837086 A CN 201510837086A CN 105370811 A CN105370811 A CN 105370811A
- Authority
- CN
- China
- Prior art keywords
- gear
- internal
- external tooth
- teeth
- tooth
- 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
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- 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
Abstract
A gear transmission device comprises a first internal tooth gear, a second internal tooth gear, a harmonic generator and an external tooth gear. First internal teeth are arranged on the first internal tooth gear. Second internal teeth are arranged on the second internal tooth gear. A cylinder is arranged on the external tooth gear. First external teeth and second external teeth are arranged on the outer circumferential surface of the cylinder. The number of the first external teeth is different from that of the second external teeth. The harmonic generator is embedded in the inner circumferential surface of the cylinder of the external tooth gear. The external tooth gear is bent to be oval, the first internal teeth and the first external teeth are engaged at the two ends of the long axis of the external tooth gear, and the second internal teeth and the second external teeth are also engaged at the two ends of the long axis of the external tooth gear. The number of the first internal teeth is larger than that of the first external teeth, and the number of the second internal teeth is smaller than that of the second external teeth. The gear transmission device is simple in structure and convenient to assemble; the degree of freedom of speed ratio setting is high, the application range of the gear transmission device is widened, a low speed ratio can be achieved easily, and the gear transmission device is suitable for the situation requiring the low speed ratio.
Description
Technical field
The present invention relates to a kind of gearing, particularly relate to a kind of gear drive.
Background technique
Gear transmission can be used for slowing down and also can be used for accelerating, and wherein common speed reducer is exactly harmonic drive speed reducer, because can produce larger reduction speed ratio, structure is simple, and number of components is few, easy for installation, is thus widely used.But the external tooth gear of general harmonic gear transmission device directly engages with Stationary side internal-gear and driving side internal-gear, again due to the mechanical property of gear transmission itself, the degrees of freedom of general harmonic gear setting speed ratio is not high, thus generally speaking, the speed ratio of common harmonic gear needs to be set in more than 50, extremely difficulty is applicable to the speed ratio of less than 35, and so common harmonic gear transmission device just can not be applicable to the situation of low speed ratio.
Therefore those skilled in the art to be devoted to research and development setting speed ratio degrees of freedom high and can realize low speed easily and compare gear drive.
Summary of the invention
Because the above-mentioned defect of prior art, it is high and can realize low speed easily and compare gear drive that technical problem to be solved by this invention is to provide a kind of setting speed ratio degrees of freedom.
For achieving the above object, the invention provides a kind of gear drive, comprise the first internal-gear, second internal-gear, harmonic generator and external tooth gear, first internal-gear is provided with the first internal tooth, second internal-gear is provided with the second internal tooth, described external tooth gear is provided with cylindrical body, the outer circumferential face of described cylindrical body is provided with the first external tooth and the second external tooth, described first external tooth is meshed with described first internal tooth, described second external tooth and the second internal tooth are meshed, described first external tooth is different with the number of teeth of the second external tooth, described harmonic generator is the inner peripheral surface of the cylindrical body embedding external tooth gear, external tooth gear is bent into ellipse, described first internal tooth engages with the two-end part of the first external tooth at the major axis of external tooth gear, described second internal tooth also engages at the two-end part of the major axis of external tooth gear with the second external tooth, the number of teeth of described first internal tooth is greater than the number of teeth of the first external tooth, the number of teeth of described second internal tooth is less than the number of teeth of the second external tooth.
In order to harmonic generator better coordinates rotation with external tooth gear, described harmonic generator comprises the rigidity connector of cartouche, the waveform bearing in the elliptical periphery face of the rigidity connector of described cartouche, described waveform bearing have can bend towards radial direction in the ball bearing of foreign steamer.
The invention has the beneficial effects as follows: structure of the present invention is simple, easy for installation, setting speed ratio degrees of freedom is high, thus greatly increases the Applicable scope of gear drive, can realize low speed ratio easily, thus be applicable to low speed than the situation required.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
Fig. 3 is the partial enlargement structural representation at the I place of Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figures 1 to 3, a kind of gear drive, comprise the first internal-gear 1, second internal-gear 2, harmonic generator 5 and external tooth gear 3, first internal-gear 1 is provided with the first internal tooth 1a, its number of teeth is Z1, second internal-gear 2 is provided with the second internal tooth 2a, its number of teeth is Z2, external tooth gear 3 is provided with cylindrical body 4, the outer circumferential face of cylindrical body 4 is provided with the first external tooth 3a and the second external tooth 3b, first external tooth 3a is different with the number of teeth of the second external tooth 3b, first external tooth 3a is in the circular circumference face of cylindrical body 4, be formed at the side of axis L, its number of teeth is Z3, second external tooth 3b is then at the opposite side of axis L, its number of teeth is Z4, first external tooth 3a is meshed with the first internal tooth 1a, second external tooth 3b and the second internal tooth 2a is meshed.
Harmonic generator 5 is the inner peripheral surfaces of the cylindrical body 4 embedding external tooth gear 3, external tooth gear 3 is bent into ellipse, first internal tooth 1a engages at the two-end part of the major axis of external tooth gear 3 with the first external tooth 3a, second internal tooth 2a also engages at the two-end part of the major axis of external tooth gear 3 with the second external tooth 3b, thus ensures better the rotation after change to be exported.The number of teeth of the first internal tooth 1a is greater than the number of teeth of the first external tooth 3a, and the number of teeth of the second internal tooth 2a is less than the number of teeth of the second external tooth 3b, ensures the realization of low speed ratio with this.
Harmonic generator 5 comprises the rigidity connector 6 of cartouche, the waveform bearing 7 in the elliptical periphery face of the rigidity connector 6 of cartouche, waveform bearing 7 have can bend towards radial direction in the ball bearing of foreign steamer, ensure that harmonic generator better coordinates rotation with external tooth gear with this.
First internal-gear 1 is set to fixing non-rotary Stationary side internal-gear, second internal-gear 2 is set to export the driving side internal-gear rotated, there is minimum gap between first internal-gear 1 and the second internal-gear 2, and two gears are configured in the direction of central axis L side by side.
When harmonic generator 5 rotates to gear drive input, external tooth gear 3 is bent into ellipse, first internal tooth 1a engages at the two-end part of the major axis of external tooth gear 3 with the first external tooth 3a, second internal tooth 2a also engages at the two-end part of the major axis of external tooth gear 3 with the second external tooth 3b, now the ratio of the external tooth gear 3 of the first internal-gear 1 and the first external tooth 3a is R1, the ratio of the external tooth gear of the second internal-gear 2 and the second external tooth 3b is R2, and input rotates and the speed ratio of output swing pinion is R.
That is: R1=1/{ (Z3-Z1)/Z3};
R2＝1/{(Z4-Z2)/Z4}；
R＝(R1.R2-R1)/(-R1+R2)；
Change former input by above-mentioned principle to rotate, second internal-gear 2 that is rotated through after change exports, and just can draw different speed ratios by the adjustment number of teeth, thus the setting range of speed ratio is comparatively wide, wherein also comprises the situation of low speed ratio.Such as, set each number of teeth and be respectively Z1=64; Z2=60; Z3=62; Z4=64, carries it into R1=1/{ (Z3-Z1)/Z3}; R2=1/{ (Z4-Z2)/Z4}; In R=(R1.R2-R1)/(-R1+R2) three formula, can draw R=-15.2, negative sign wherein represents that exporting sense of rotation with input sense of rotation is opposite direction.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment.
Claims (2)
1. a gear drive, comprise the first internal-gear (1), the second internal-gear (2), harmonic generator (5) and external tooth gear (3), first internal-gear (1) is provided with the first internal tooth (1a), second internal-gear (2) is provided with the second internal tooth (2a), it is characterized in that: described external tooth gear (3) is provided with cylindrical body (4); The outer circumferential face of described cylindrical body (4) is provided with the first external tooth (3a) and the second external tooth (3b); Described first external tooth (3a) is meshed with described first internal tooth (1a); Described second external tooth (3b) and the second internal tooth (2a) are meshed; Described first external tooth (3a) is different with the number of teeth of the second external tooth (3b); Described harmonic generator (5) is the inner peripheral surface of the cylindrical body (4) embedding external tooth gear (3), and external tooth gear (3) is bent into ellipse; Described first internal tooth (1a) is engaged with the two-end part of the first external tooth (3a) at the major axis of external tooth gear (3); Described second internal tooth (2a) is also engaged at the two-end part of the major axis of external tooth gear (3) with the second external tooth (3b); The number of teeth of described first internal tooth (1a) is greater than the number of teeth of the first external tooth (3a); The number of teeth of described second internal tooth (2a) is less than the number of teeth of the second external tooth (3b).
2. gear drive as claimed in claim 1, is characterized in that: described harmonic generator (5) comprises the rigidity connector (6) of cartouche; The waveform bearing (7) in the elliptical periphery face of the rigidity connector (6) of described cartouche; Described waveform bearing (7) have can bend towards radial direction in the ball bearing of foreign steamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837086.8A CN105370811A (en) | 2015-11-26 | 2015-11-26 | Gear transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837086.8A CN105370811A (en) | 2015-11-26 | 2015-11-26 | Gear transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105370811A true CN105370811A (en) | 2016-03-02 |
Family
ID=55373289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510837086.8A Pending CN105370811A (en) | 2015-11-26 | 2015-11-26 | Gear transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370811A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402327A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Dual gear speed reducing device |
| CN105402324A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Gear device |
| CN105402325A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Gear speed reducer |
| CN105402316A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Dual gear transmission speed reducer |
| CN105402326A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Dual gear device |
| CN105422747A (en) * | 2015-11-30 | 2016-03-23 | 綦江精锐达重型齿轮有限公司 | Dual-gear transmission device |
| CN105422797A (en) * | 2015-11-30 | 2016-03-23 | 綦江精锐达重型齿轮有限公司 | Dual type gear |
| CN105508553A (en) * | 2015-11-30 | 2016-04-20 | 綦江精锐达重型齿轮有限公司 | Gear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133414A (en) * | 2007-11-30 | 2009-06-18 | Jtekt Corp | Wave gear sspeed reducer and variable transmission ratio steering device |
| CN101614265A (en) * | 2008-06-26 | 2009-12-30 | 谐波传动系统有限公司 | Composite wave gear drive |
| TW201512566A (en) * | 2013-07-01 | 2015-04-01 | Harmonic Drive Systems | Strain wave gear device |
| TW201525327A (en) * | 2013-07-25 | 2015-07-01 | Harmonic Drive Systems | Harmonic gear device |
| CN104769317A (en) * | 2013-07-10 | 2015-07-08 | 谐波传动系统有限公司 | Wave generator and wave gear device |
-
2015
- 2015-11-26 CN CN201510837086.8A patent/CN105370811A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133414A (en) * | 2007-11-30 | 2009-06-18 | Jtekt Corp | Wave gear sspeed reducer and variable transmission ratio steering device |
| CN101614265A (en) * | 2008-06-26 | 2009-12-30 | 谐波传动系统有限公司 | Composite wave gear drive |
| TW201512566A (en) * | 2013-07-01 | 2015-04-01 | Harmonic Drive Systems | Strain wave gear device |
| CN104769317A (en) * | 2013-07-10 | 2015-07-08 | 谐波传动系统有限公司 | Wave generator and wave gear device |
| TW201525327A (en) * | 2013-07-25 | 2015-07-01 | Harmonic Drive Systems | Harmonic gear device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402327A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Dual gear speed reducing device |
| CN105402324A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Gear device |
| CN105402325A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Gear speed reducer |
| CN105402316A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Dual gear transmission speed reducer |
| CN105402326A (en) * | 2015-11-30 | 2016-03-16 | 綦江精锐达重型齿轮有限公司 | Dual gear device |
| CN105422747A (en) * | 2015-11-30 | 2016-03-23 | 綦江精锐达重型齿轮有限公司 | Dual-gear transmission device |
| CN105422797A (en) * | 2015-11-30 | 2016-03-23 | 綦江精锐达重型齿轮有限公司 | Dual type gear |
| CN105508553A (en) * | 2015-11-30 | 2016-04-20 | 綦江精锐达重型齿轮有限公司 | Gear |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20160302 |