CN219035496U - Dynamic balance anti-backlash gear assembly - Google Patents
Dynamic balance anti-backlash gear assembly Download PDFInfo
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- CN219035496U CN219035496U CN202223430277.7U CN202223430277U CN219035496U CN 219035496 U CN219035496 U CN 219035496U CN 202223430277 U CN202223430277 U CN 202223430277U CN 219035496 U CN219035496 U CN 219035496U
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Abstract
The dynamic balance anti-backlash gear assembly comprises a main gear ring, an auxiliary gear ring and a circumferential elastic piece, wherein the circumferential elastic piece is an anti-backlash clamp spring, and arc-shaped grooves are respectively arranged at the opening ends of the anti-backlash clamp spring; the main gear ring and the auxiliary gear ring are respectively provided with an axial pin, and when the anti-backlash clamp spring is installed, a pair of arc-shaped grooves on the anti-backlash clamp spring are respectively clamped on the two axial pins, so that the main gear ring and the auxiliary gear ring rotate in opposite directions. The anti-backlash gear assembly has the following beneficial effects: 1. the space occupation of the anti-backlash clamp spring gear ring is small, which is beneficial to realizing the miniaturization and the light weight of the anti-backlash gear; 2. the mounting structure of the anti-backlash clamp spring is simple, and the processing difficulty and cost of the main gear ring and the auxiliary gear ring are greatly reduced; 3. the clamping force of the anti-backlash clamp spring is large, the processing is easy, and the cost is low; 4. dynamic balance of the gear assembly is realized through the weight hole; 5. the axial movement of the auxiliary gear ring is eliminated through the corrugated spring; 6. and the main gear ring and the auxiliary gear ring are connected together by the process holes to be processed, so that the uniformity of eliminating gaps is improved.
Description
Technical Field
The utility model relates to the field of gears, in particular to a dynamic balance anti-backlash gear assembly.
Background
The backlash eliminating gear can eliminate backlash generated by gear meshing and has the functions of reducing transmission noise and improving transmission precision. The anti-backlash spur gear mainly comprises a main gear ring, an auxiliary gear ring and a circumferential elastic piece. The conventional circumferential elastic piece is a torsion spring, and the main gear ring and the auxiliary gear ring are staggered for a certain angle under the action of the torsion spring, so that the backlash can be eliminated when the main gear ring and the auxiliary gear ring are meshed with other gears.
The existing anti-backlash straight gears have the defects that firstly, the space occupied by the torsion spring is larger, and the miniaturization and the light weight of the gears are not facilitated; secondly, the mounting structure of the torsion spring increases the processing difficulty and cost of the main gear ring and the auxiliary gear ring; thirdly, lack balanced structure, the gear is difficult to realize dynamic balance.
Disclosure of Invention
In order to overcome the defects in the background technology, the utility model discloses a dynamic balance anti-backlash gear assembly, which adopts the following technical scheme:
the dynamic balance anti-backlash gear assembly comprises a main gear ring, an auxiliary gear ring and a circumferential elastic piece, wherein the circumferential elastic piece is an anti-backlash clamp spring, and arc-shaped grooves are respectively arranged at the opening ends of the anti-backlash clamp spring; the main gear ring and the auxiliary gear ring are respectively provided with an axial pin, and when the anti-backlash clamp spring is installed, a pair of arc-shaped grooves on the anti-backlash clamp spring are respectively clamped on the two axial pins, so that the main gear ring and the auxiliary gear ring rotate in opposite directions.
According to the technical scheme, a ring sleeve concentric with the axis of the shaft hole of the main gear is arranged on one side of the main gear, and the auxiliary gear ring is arranged on the ring sleeve and is in running fit with the ring sleeve.
According to the technical scheme, an axial ring groove for accommodating the anti-backlash clamp spring and two axial pins is formed in the main gear ring or the auxiliary gear ring.
According to a further improved technical scheme, the axial ring groove is positioned on one side of the main gear ring, which faces the auxiliary gear ring.
According to the technical scheme, a radial annular groove is formed in the annular sleeve, a clamping spring for a shaft is arranged in the radial annular groove, a corrugated spring is arranged between the clamping spring for the shaft and the auxiliary gear ring and is used for providing axial force for the auxiliary gear ring, and the auxiliary gear ring is tightly pressed against the main gear ring.
According to the technical scheme, pin holes are formed in the main gear ring and the auxiliary gear ring, and the axial pins are fixed in the pin holes.
Further improving the technical proposal, the main gear ring or the auxiliary gear ring is provided with a weight hole.
Further improving the technical proposal, a process connecting hole is arranged between the main gear ring or the auxiliary gear ring.
Due to the adoption of the technical scheme, compared with the background technology, the anti-backlash gear assembly has at least the following beneficial effects:
1. the anti-backlash clamp spring has small volume and small occupation of the space of the gear ring, and is beneficial to realizing the miniaturization and the light weight of the anti-backlash gear;
2. the mounting structure of the anti-backlash clamp spring on the main gear ring and the auxiliary gear ring is very simple, and the processing difficulty and cost of the main gear ring and the auxiliary gear ring are greatly reduced;
3. the clamping force of the anti-backlash clamp spring is large, the processing is easy, and the cost is low;
4. the offset of the mass center is eliminated through the weight hole, so that the anti-backlash gear assembly realizes dynamic balance;
5. the corrugated spring is used for enabling the auxiliary gear ring to be tightly pressed against the main gear ring, so that the axial movement of the auxiliary gear ring is eliminated;
6. the main gear ring and the auxiliary gear ring are connected together and processed by the aid of the process holes, tooth shapes of the main gear ring and the auxiliary gear ring are completely consistent in geometric dimension and tooth shape precision, and uniformity of clearance elimination is improved.
Drawings
Fig. 1 shows a front view of the present anti-backlash gear assembly.
Fig. 2 shows a cross-sectional view of fig. 1.
Fig. 3 shows a front view of the ring gear.
Fig. 4 shows a cross-sectional view of fig. 3.
Fig. 5 shows a front view of the secondary ring gear.
Fig. 6 shows a cross-sectional view of fig. 5.
Fig. 7 shows a front view of the anti-backlash snap spring.
Fig. 8 shows a left side view of fig. 7.
Fig. 9 shows a front view of the bellows spring.
Fig. 10 shows a cross-sectional view of fig. 9.
In the figure:
1. a main gear ring;
11. a ring sleeve; 12. radial ring grooves; 13. an axial ring groove; 14. a main tooth pin hole; 15. a process threaded hole; 16. a weight port;
2. an auxiliary gear ring;
21. a process connection hole; 22. auxiliary tooth pin holes;
3. anti-backlash clamp springs;
31. an arc-shaped groove;
4. an axial pin;
5. a wave spring;
6. a fastening screw;
7. and a snap spring for the shaft.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. It should be noted that, in the description of the present utility model, terms such as "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. It should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1 and 2, a dynamic balance anti-backlash gear assembly includes a main ring gear 1, a sub ring gear 2, and an anti-backlash snap spring 3, the structure and function of which are specifically described below.
Fig. 3 shows a front view of the ring gear 1. Fig. 4 shows a cross-sectional view of fig. 3. As can be seen from fig. 3 and 4, the ring gear 1 has a straight tooth and a shaft hole, a ring sleeve 11 concentric with the shaft hole axis of the ring gear 1 is provided on one side of the ring gear 1, and a radial ring groove 12 is provided at an end of the ring sleeve 11. In this embodiment, the inner hole of the ring 11 is also the shaft hole of the main ring gear 1. An axial ring groove 13 is also arranged on the same side of the main gear ring 1, and a main gear pin hole 14 and a weight hole 16 are processed in the axial ring groove 13. In addition, two symmetrical process threaded bores 15 are formed in the main toothing 1, wherein the main toothing bores 14 have an angle with respect to the line connecting the two process threaded bores 15.
Fig. 5 shows a front view of the secondary ring gear 2. Fig. 6 shows a cross-sectional view of fig. 5. As can be seen from fig. 5 and 6, the main ring gear 1 has, in addition to the straight teeth and the inner bore, an auxiliary tooth pin hole 22 and four uniformly distributed process connection holes 21, wherein the auxiliary tooth pin hole 22 has an angle with respect to the line connecting two of the process connection holes 21. Four evenly distributed process connection holes 21 are arranged on the auxiliary gear ring 2 to facilitate adjustment during installation.
Fig. 7 shows a front view of the anti-backlash clamp spring 3. Fig. 8 shows a left side view of fig. 7. As can be seen from fig. 5 and 6, unlike the conventional shaft snap spring 7, arc-shaped grooves 31 are provided at the open ends of the anti-backlash snap springs 3, respectively. It is worth noting that the inner circle center and the outer circle center of the anti-backlash clamp spring 3 are not coincident, and the design can enable the opening end of the anti-backlash clamp spring 3 to have larger rigidity, and larger force is required to prop open the opening end of the anti-backlash clamp spring 3. Conversely, the open end after being spread also generates a large clamping force.
Turning to fig. 1 and 2, fig. 1 shows a front view of the present anti-backlash gear assembly. Fig. 2 shows a cross-sectional view of fig. 1. As can be seen from fig. 1 and 2, the secondary ring gear 2 is mounted on the ring sleeve 11 of the primary ring gear 1, and the secondary ring gear 2 can freely rotate on the ring sleeve 11. An axial pin 4 is knocked into the main tooth pin hole 14 of the main tooth ring 1, the axial pin 4 is in interference fit with the main tooth pin hole 14, and the exposed part of the axial pin 4 is positioned in the axial ring groove 13. Similarly, an axial pin 4 is also driven into the secondary tooth pin hole 22 of the secondary ring gear 2, the axial pin 4 is in interference fit with the primary tooth pin hole 14, and the exposed portion of the axial pin 4 is located in the axial ring groove 13. After installation, the two axial pins 4 have a certain angle relative to the center of the shaft hole. An anti-backlash clamp spring 3 is also arranged in the axial ring groove 13, and a pair of arc-shaped grooves 31 on the anti-backlash clamp spring 3 are respectively clamped on the two axial pins 4. In this way, under the clamping force of the anti-backlash clamp spring 3, the main gear ring 1 and the auxiliary gear ring 2 can rotate in opposite directions, and the anti-backlash clamp spring is used for eliminating backlash when being meshed with other gears. The axial ring groove 13 has two functions, namely, the anti-backlash clamp spring 3 and the two axial pins 4 are contained, so that the overall volume of the gear assembly is reduced; secondly, conceal the clearance eliminating clamp spring 3 and the two axial pins 4 in the gear assembly, and avoid the unexpected escape of the clearance eliminating clamp spring 3 and the two axial pins 4.
The anti-backlash clamp spring 3 is used as a circumferential elastic piece, and compared with a traditional torsion spring, the anti-backlash clamp spring has the advantages that:
1. the anti-backlash clamp spring 3 has small volume and small occupation of the space of the gear ring, and is beneficial to realizing the miniaturization and the light weight of the anti-backlash gear;
2. the mounting structure of the anti-backlash clamp spring 3 on the main gear ring 1 and the auxiliary gear ring 2 is very simple, and the processing difficulty and cost of the main gear ring 1 and the auxiliary gear ring 2 are greatly reduced;
3. the anti-backlash clamp spring 3 has the advantages of large clamping force, easy processing and low cost.
In order to eliminate unbalance caused by the anti-backlash clamp spring 3 and the two axial pins 4, a weight hole 16 is processed in the main gear 1, and the weight hole 16 is used for eliminating unbalance caused by the anti-backlash clamp spring 3 and the two axial pins 4.
In fig. 1 and 2, a shaft snap spring 7 is mounted in the radial ring groove 12, and the shaft snap spring 7 functions to prevent the sub-ring gear 2 from coming off the ring sleeve 11. A ripple spring 5 is provided between the shaft snap spring 7 and the sub-ring gear 2. Referring to fig. 9 and 10, fig. 9 is a front view of the bellows spring 5, and fig. 10 is a sectional view of fig. 9. The corrugated spring 5 is used for providing axial force for the auxiliary gear ring 2, so that the auxiliary gear ring 2 is tightly pressed against the main gear ring 1, and the auxiliary gear ring 2 is prevented from axially moving.
In fig. 1 and 2, two fastening screws 6 respectively pass through process connection holes 21 on the secondary gear ring 2 and are screwed into process threaded holes 15 on the primary gear ring 1 to connect the primary gear ring 1 and the secondary gear ring 2 together, and the design is designed to facilitate the processing of gears. After the main gear ring 1 and the auxiliary gear ring 2 are connected together, the straight teeth on the main gear ring 1 and the auxiliary gear ring 2 can be integrally ground on a gear grinding machine, so that the tooth shapes of the main gear ring 1 and the auxiliary gear ring 2 are completely consistent in geometric dimension and tooth shape precision, and the uniformity of clearance elimination is improved. After grinding of the tooth form, the fastening screw 6 can be removed.
The parts not described in detail are prior art. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a dynamic balance anti-backlash gear assembly, includes main ring gear, vice ring gear and circumference elastic component, characterized by: the circumferential elastic piece is an anti-backlash snap spring, and arc-shaped grooves are respectively arranged at the opening ends of the anti-backlash snap spring; the main gear ring and the auxiliary gear ring are respectively provided with an axial pin, and when the anti-backlash clamp spring is installed, a pair of arc-shaped grooves on the anti-backlash clamp spring are respectively clamped on the two axial pins, so that the main gear ring and the auxiliary gear ring rotate in opposite directions.
2. A dynamic balancing anti-backlash gear assembly as recited in claim 1, wherein: one side of the main gear ring is provided with a ring sleeve concentric with the axis of the shaft hole of the main gear ring, and the auxiliary gear ring is arranged on the ring sleeve and is in running fit with the ring sleeve.
3. A dynamic balancing anti-backlash gear assembly according to claim 1 or 2, characterized in that: the main gear ring or the auxiliary gear ring is provided with an axial ring groove for accommodating the anti-backlash clamp spring and the two axial pins.
4. A dynamic balancing anti-backlash gear assembly as claimed in claim 3, wherein: the axial ring groove is positioned on one side of the main gear ring, which faces the auxiliary gear ring.
5. A dynamic balancing anti-backlash gear assembly as claimed in claim 2, wherein: the annular sleeve is provided with a radial annular groove, a clamping spring for a shaft is arranged in the radial annular groove, a corrugated spring is arranged between the clamping spring for the shaft and the auxiliary gear ring and is used for providing axial force for the auxiliary gear ring so that the auxiliary gear ring is tightly pressed against the main gear ring.
6. A dynamic balancing anti-backlash gear assembly as recited in claim 1, wherein: the main gear ring and the auxiliary gear ring are respectively provided with a pin hole, and the axial pins are fixed in the pin holes.
7. A dynamic balancing anti-backlash gear assembly as recited in claim 1, wherein: and the main gear ring or the auxiliary gear ring is provided with a weight hole.
8. A dynamic balancing anti-backlash gear assembly as recited in claim 1, wherein: and a process connecting hole is arranged between the main gear ring and the auxiliary gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223430277.7U CN219035496U (en) | 2022-12-21 | 2022-12-21 | Dynamic balance anti-backlash gear assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223430277.7U CN219035496U (en) | 2022-12-21 | 2022-12-21 | Dynamic balance anti-backlash gear assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219035496U true CN219035496U (en) | 2023-05-16 |
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ID=86313580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223430277.7U Active CN219035496U (en) | 2022-12-21 | 2022-12-21 | Dynamic balance anti-backlash gear assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219035496U (en) |
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2022
- 2022-12-21 CN CN202223430277.7U patent/CN219035496U/en active Active
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