CN212250990U - High-precision planetary reducer and connector - Google Patents
High-precision planetary reducer and connector Download PDFInfo
- Publication number
- CN212250990U CN212250990U CN202022052071.XU CN202022052071U CN212250990U CN 212250990 U CN212250990 U CN 212250990U CN 202022052071 U CN202022052071 U CN 202022052071U CN 212250990 U CN212250990 U CN 212250990U
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- China
- Prior art keywords
- outer ring
- elastic outer
- elastic
- sun wheel
- planetary reducer
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000007767 bonding agent Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a high-precision planetary reducer and connector, which comprises a supporting seat, a sun wheel, at least two planet wheels and an elastic outer ring, wherein the sun wheel is arranged on the supporting seat, the outer diameter surface of the sun wheel is smooth and toothless, and the inner diameter of the elastic outer ring is smaller than the outer diameter of the sun wheel and the added diameter of 2 opposite planet wheels, so that the planet wheels and the inner ring of the elastic outer ring are mutually extruded, and torsion is transmitted outwards through the elastic outer ring; the speed reduction ratio is high, no vibration, high transmission precision and low noise.
Description
Technical Field
The utility model belongs to the reduction gear field especially relates to high accuracy planetary reducer.
Background
The existing planetary speed reducers all adopt a gear mode to realize speed reduction transmission, and have the defects of small speed reduction ratio, large vibration, poor transmission precision, large noise and the like.
SUMMERY OF THE UTILITY MODEL
To the problem that current planetary reducer speed reduction ratio is little, the vibration is big, the transmission precision is poor, the noise is big etc, the utility model aims at providing a speed reduction ratio is high, do not have the vibration, the transmission precision is high, the little planetary reducer of noise and connector.
Therefore, the utility model adopts the following technical scheme:
the utility model provides a high accuracy planetary reducer, includes the supporting seat, sets up on the supporting seat and the smooth toothless sun gear of external diameter surface, planet wheel and elasticity outer lane are constituteed, the internal diameter of elasticity outer lane is less than sun gear external diameter and 2 the diameter that adds outward of planet wheel makes the outer lane of planet wheel with the inner circle of elasticity outer lane extrudees each other, through the outside transmission torsion of elasticity outer lane.
Preferably, both sides of the inner circle surface of the elastic outer ring are provided with flanges.
Preferably, the supporting seat is connected with a cover plate covering one side of the sun wheel and the planet wheel, and the cover plate is fixed on the supporting seat through screws.
The connector comprises the high-precision planetary reducer, at least two round holes are formed in one surface, facing the rigid connector, of the elastic outer ring, cylindrical pins matched with the round holes are arranged on one surface, facing the elastic outer ring, of the rigid connector, so that torsion of the planetary reducer can be transmitted, and the hole diameter of each round hole is larger than the outer diameter of each cylindrical pin.
Preferably, an elastic adhesive is filled between the elastic outer ring and the rigid connector.
Preferably, the inner side of the rigid connector is provided with a groove matched with the cover plate.
Has the advantages that:
the planetary reducer has high reduction ratio (the maximum single-stage reduction ratio can reach 13.5: 1), no vibration and high transmission precision, and because the sun gear and the planet gear are both of a gearless structure, the planetary reducer has very low noise during operation.
Drawings
Fig. 1 is the structure schematic diagram of the high-precision planetary reducer of the present invention.
Fig. 2 is a schematic structural diagram of the connector of the present invention.
Reference numbers: 1. a sun gear; 2. a planet wheel; 3. an elastic outer ring; 4. a connector; 5. a supporting seat; 6. a circular hole; 7. a cylindrical needle; 8. an elastic binder; 9. a support shaft; 10. a cover plate; 11. a screw; 12. a screw hole; 13. a bearing; 14. and (7) blocking edges.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings. The described embodiments are merely illustrative and explanatory of the invention and do not constitute the only limitation of the invention.
As shown in fig. 1 and 2, a high-precision planetary reducer comprises a supporting seat 5, a sun gear 1, a planet gear 2 and an elastic outer ring 3, wherein flanges 14 are arranged on two sides of the inner circular surface of the elastic outer ring 3, the flanges 14 are in contact with the end faces of the planet gear 2, the sun gear 1 is arranged on the supporting seat 5, the inner diameter surface and the outer diameter surface of the sun gear are smooth and toothless, three planet gear 2 supporting shafts 9 are arranged on the supporting seat 5, the planet gear is arranged on the planet gear 2 supporting shafts 9, a mounting bearing 13 is arranged between the inner hole of the planet gear 2 and the supporting shafts 9 to reduce friction resistance, and the outer diameter surface of the planet gear is smooth.
The internal diameter of elasticity outer lane 3 is less than sun gear 1 diameter and planet wheel 2 diameter and adds the sum for planet wheel 2's outer lane with the inner circle of elasticity outer lane 3 extrudees each other, through the outside transmission torsion of elasticity outer lane 3, and when the installation, must heat elasticity outer lane 3 and make its inflation grow then suit on planet wheel 2, through the inside extrusion planet wheel 2 of elasticity outer lane 3 and sun gear 1, prevents to extrude planet wheel 2 and sun gear 1 and skid each other.
The supporting seat 5 is connected with a cover plate 10 which covers one side of the sun wheel 1 and the planet wheel 2, both the cover plate 10 and the supporting seat 5 are provided with screw holes 12, the cover plate 10 is fixed on the supporting seat 5 through screws 11, and the end parts of the screws 11 are flush with the surface of the cover plate 10.
The planetary reducer has high reduction ratio (the maximum single-stage reduction ratio can reach 13.5: 1), no vibration and high transmission precision, and because the sun wheel 1 and the planet wheel 2 are both of a gearless structure, the planetary reducer has very low noise during operation.
As shown in fig. 1 and 2, based on the high precision planetary reducer, a connector 4 is designed, the elastic outer ring 3 has 2 or more circular holes 6, correspondingly, the rigid connector 4 has 2 or more cylindrical pins 7 for transmitting the torque of the reducer, and the diameter of the circular hole 6 on the elastic outer ring 3 must be larger than the outer diameter of the cylindrical pin 7 on the rigid connector 4. The aperture of the round hole 6 is the aperture between the outer diameters of the cylindrical needle 7(7) which is turned, and the aperture must be larger than the sum of the diameter of the sun wheel 1 and the diameter of the 2 planet wheels 2 minus the inner diameter of the elastic outer ring 3, so that the elastic outer ring 3 is prevented from breaking the cylindrical needle 7 when the elastic outer ring 3 is deformed in a rotating mode. An elastic bonding agent 8 is filled between the elastic outer ring 3 and the rigid connector 4, so that a gap error caused by a gap between the round hole 6 on the elastic outer ring 3 and the cylindrical needle 7 on the rigid connector 4 is eliminated, and the transmission precision is improved.
The sun gear 1 is driven by the motor rotor to rotate as a motor shaft, the supporting seat 5 can be used as an end cover of the output end of the motor, the sun gear 1 drives the planet gear 2 to rotate under the compression action of the elastic outer ring 3, and the planet gear 2 drives the elastic outer ring 3 to rotate, as shown in fig. 2. The elastic outer ring 3 transmits torsion to the rigid connector 4 and a circular needle on the rigid connector 4 through a circular hole on the elastic outer ring 3 and an elastic adhesive to drive the rigid connector 4 to rotate, and because the sun wheel 1, the planet wheel 2 and the elastic outer ring 3 are transmitted by friction, the distance between the planet wheel 2 and the adjacent planet wheel 2 can be very small, so that the reduction ratio can be very high.
When the utility model discloses a be applied to the rotary drive of robot joint, realize zero error when can making the joint positive and negative rotation, improve the positioning accuracy of robot.
Claims (6)
1. A high accuracy planetary reducer which characterized in that: the transmission device comprises a supporting seat (5), a sun wheel (1), planet wheels (2) and an elastic outer ring (3), wherein the outer diameter surface of the sun wheel (1) is smooth and toothless, and the outer diameter surface of the elastic outer ring (3) is smooth and toothless, and the inner diameter of the elastic outer ring (3) is smaller than the outer diameter of the sun wheel (1) and 2, the outer diameter of the planet wheels (2) is increased, so that the sun wheel (1) and the planet wheels (2) are mutually extruded with the inner ring of the elastic outer ring (3), and torsion is transmitted outwards through the elastic outer ring (3).
2. A high-precision planetary reducer according to claim 1, wherein: and two sides of the inner circular surface of the elastic outer ring (3) are provided with flanges (14).
3. A high-precision planetary reducer according to claim 2, wherein: the supporting seat (5) is connected with a cover plate (10) covering one side of the sun wheel (1) and one side of the planet wheel (2), and the cover plate (10) is fixed on the supporting seat (5) through a screw (11).
4. A coupling comprising a high-precision planetary reduction gear according to claims 1 to 3, characterized in that: the elastic outer ring (3) is provided with at least two round holes (6) towards one surface of the rigid connector (4), one surface of the rigid connector (4) towards the elastic outer ring (3) is provided with a cylindrical needle (7) matched with the round holes (6) so as to be used for transmitting the torsion of the planetary reducer, and the aperture of the round holes (6) is larger than the outer diameter of the cylindrical needle (7).
5. A connector according to claim 4, wherein: and an elastic bonding agent (8) is filled between the elastic outer ring (3) and the rigid connector (4).
6. A connector according to claim 4, wherein: the inner side of the rigid connector (4) is provided with a groove matched with the cover plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022052071.XU CN212250990U (en) | 2020-09-16 | 2020-09-16 | High-precision planetary reducer and connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022052071.XU CN212250990U (en) | 2020-09-16 | 2020-09-16 | High-precision planetary reducer and connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212250990U true CN212250990U (en) | 2020-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022052071.XU Active CN212250990U (en) | 2020-09-16 | 2020-09-16 | High-precision planetary reducer and connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212250990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998039A (en) * | 2020-09-16 | 2020-11-27 | 浙江超级电气科技有限公司 | A high-precision planetary reducer and connector |
-
2020
- 2020-09-16 CN CN202022052071.XU patent/CN212250990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998039A (en) * | 2020-09-16 | 2020-11-27 | 浙江超级电气科技有限公司 | A high-precision planetary reducer and connector |
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