CN213744789U

CN213744789U - Novel structure of fan-shaped block connection type movable tooth transmission

Info

Publication number: CN213744789U
Application number: CN202021353659.2U
Authority: CN
Inventors: 周江; 张维良; 徐振
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-11
Filing date: 2020-07-11
Publication date: 2021-07-20
Anticipated expiration: 2030-07-11

Abstract

The utility model discloses a new structure of fan-shaped block connection type movable tooth transmission, the transmission mechanism comprises a movable tooth disc, the movable tooth disc is composed of a movable tooth disc A and a movable tooth disc B which are connected by screws, the movable tooth disc A is provided with a plurality of convex blocks on the base body, holes with the same number as the fan-shaped blocks are processed on the corresponding positions of a shock wave device, the convex blocks pass through the holes on the shock wave device and are connected with another movable tooth disc into a whole by a connecting piece, the size of the holes is that the radial and lateral directions are both larger than 2 times of the eccentric distance e, the movable tooth disc B is connected with a bearing seat by screws, and an output disc is connected with the movable tooth disc A by screws; the structure has the characteristics of small volume, large speed ratio, low processing cost, high precision, low noise and high efficiency, is suitable for the application range of a high-precision speed reducer, and reduces the manufacturing cost and the manufacturing difficulty; one of the movable fluted discs is processed with a plurality of convex blocks for connecting with the other movable teeth to form a pair of movable fluted discs.

Description

Novel structure of fan-shaped block connection type movable tooth transmission

Technical Field

The utility model relates to a mechanical transmission reduction gear technical field, more specifically say, it relates to a new structure of fan-shaped piece connected type oscillating tooth transmission.

Background

The precision transmission device is the basis of high-end equipment, and the development of the precision transmission technology inevitably drives the progress of high-end manufacturing industry. In high-end manufacturing, the joint arm of an industrial robot puts higher technical requirements on precise rotary transmission. The requirements of the joint arm of the industrial robot on the speed reducer are small volume, large transmission ratio and large load. Therefore, it is necessary to design a transmission device with small volume, high precision and large speed ratio.

A patent of ZL91101060.2 scheme in 1991 in China provides a brand-new full-rolling oscillating tooth transmission. The transmission mainly comprises a fixed tooth gear G, a movable tooth gear H and a shock wave device J. The movable gear adopts a rolling force transmission structure to realize full-rolling movable gear transmission, as shown in figures 1-2. In the structure, two movable tooth half discs HA and HB are connected through holes in respective fan-shaped convex blocks and corresponding threaded holes by screws, and a positioning pin and a spigot on the disc are arranged in one hole to accurately position the two movable tooth half discs HA and HB together so as to form a pair of movable tooth discs. The scheme solves the problem that sliding friction exists among force transmission assemblies in all kinds of movable tooth transmission at that time, and the movable tooth transmission really becomes a universal mechanical transmission technology with high transmission efficiency, large bearing capacity, large transmission ratio, small volume and light weight. However, in practice, it has been found that the above-mentioned oscillating tooth transmission is very limited in structure, thereby limiting the exertion of the advantages of the oscillating tooth transmission. In the technology disclosed in the above patent, the movable toothed disc is composed of HA and HB as shown in fig. 1-2, the disc is provided with a pin groove for the movable toothed pin to roll, and after the space and the roller groove required by the shock wave motion are reserved, the two half discs can only be connected with each other through a hole from the sector-shaped bump on the disc by a screw. This arrangement is very successful for use in medium to small transmission ratios. However, when the transmission ratio is increased, the movable-tooth rollers are more and smaller, so that the fan-shaped convex blocks are also reduced to be incapable of realizing connection. This limits the scope of application of the patented technology, especially for use in miniature transmissions.

The utility model patent No. ZL 200820126411.5 is an improvement to above defect, has proposed a wear pole formula oscillating tooth transmission, as shown in fig. 3-4, the oscillating tooth frame of oscillating tooth gear in the device comprises a set of pole and a pair or many pairs of oscillating tooth half disks of division pin shaft groove and pole through hole, passes the macropore on the shock wave dish by the pole and connects, has overcome former oscillating tooth frame and can not realize the driven shortcoming of big velocity ratio by two half disks with screw lug connection. The full-rolling movable tooth transmission with high efficiency, high bearing capacity, small volume and light weight can be more widely applied.

However, the practice also finds that the structure has the limitations, the number of parts of the device is increased, the matching precision is increased, the part processing difficulty is increased, the high-precision speed reducer is not easy to manufacture, and the application of the technology in the field of high-precision mechanical transmission is limited

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a fan-shaped piece connection type oscillating tooth transmission new construction to solve the problem that provides among the above-mentioned background art. The utility model discloses the fluted disc that will move about and wear the movable fluted disc that the pole made the integral type, that is to say that set up a plurality of fan-shaped lugs on the fluted disc that moves about. Because the utility model discloses cancelled independent fan-shaped lug to wear the pole to do on the fluted disc that lives, simple structure has enlarged the driven range of application of the oscillating tooth.

In order to achieve the above purpose, the utility model provides a following technical scheme: a new structure of segment-connected movable tooth transmission comprises:

a shock wave device;

the transmission mechanism comprises a movable toothed disc, and the movable toothed disc comprises a movable toothed disc A and a movable toothed disc B;

the movable fluted disc A or the movable fluted disc B is provided with a plurality of convex blocks, holes with the same number as the convex blocks are processed at corresponding positions on the shock wave device, and the convex blocks penetrate through the holes on the shock wave device and are connected with the other movable fluted disc into a whole through a connecting piece.

Further, the size of the hole is an eccentricity e which is larger than 2 times in the radial direction and the lateral direction, wherein the eccentricity e is the distance between the central axis of the shock wave bearing and the central axis of the input shaft.

Further, still include: the movable teeth, the input shaft and the gear ring;

the shock wave device is sleeved on the shock wave bearing, the shock wave bearing is sleeved on the input shaft, and the input shaft is supported through the pair of first bearings.

Furthermore, the movable fluted disc B is connected with the bearing seat through a connecting piece, the output disc is connected with the movable fluted disc A through a connecting piece, the movable teeth are placed in the circumferential groove of the movable fluted disc, two sides of the movable fluted disc are supported by a second bearing, and the movable teeth are respectively contacted with the gear ring and the shock wave device.

Further, still include dustproof construction, dustproof construction includes the retaining ring, the retaining ring is installed shock wave bearing with between the first bearing.

Further, the shock wave bearing locking device further comprises a locking mechanism, the locking mechanism comprises a clamping ring and double nuts, and the check ring locks the first bearing and the shock wave bearing through the clamping ring and the double nuts.

Furthermore, the dustproof structure also comprises a rear end cover, and the rear end cover is installed on the right side of the gear ring through a screw; the dustproof structure further comprises a front end cover, and the front end cover is buckled inside the clamping hole in the middle of the output disc.

Furthermore, the dustproof structure further comprises a first sealing ring and a second sealing ring, the first sealing ring is installed between the output disc and the gear ring, and the second sealing ring is installed between the rear end cover and the input shaft.

Furthermore, at least two holes are formed in the shock wave device; the projections may be in the form of sectors or rectangles.

Furthermore, two or more rows of movable fluted discs are connected in series, and each row of movable fluted discs are symmetrically distributed along the circumferential direction.

Further, the connection means may include a screw connection, a pin connection, or other similar or equivalent connection means.

To sum up, the utility model discloses mainly have following beneficial effect:

1. the utility model discloses the fluted disc that will move about and wear the movable fluted disc that the pole made the integral type, that is to say that set up a plurality of fan-shaped lugs on the fluted disc that moves about. Because the utility model discloses cancelled independent fan-shaped lug to wear the pole to do on the fluted disc that lives, simple structure has enlarged the driven range of application of the oscillating tooth.

2. The range of the transmission ratio is expanded: in the original oscillating tooth transmission, two oscillating tooth half discs b are connected by a group of screws from the same circumference distributed on an oscillating tooth roller G, so that the diameter of the oscillating tooth cannot be too small, the number of the oscillating tooth cannot be too large, and the speed ratio of the oscillating tooth transmission cannot be too large; the general speed ratio is more ideal below; by adopting the design of the utility model, one convex block of one of the two movable-tooth half disks, namely the movable-tooth disk A and the movable-tooth disk B, passes through the hole on the shock wave device to be connected with the other movable-tooth half disk, namely one of the movable-tooth disk A and the movable-tooth disk B, so that the movable-tooth roller can be designed to be smaller and larger, thereby enlarging the range of transmission ratio; the single stage ratio can be increased to 80 to 110;

3. the structure of the movable fluted disc is simplified: the original oscillating tooth disc consists of an oscillating tooth half disc and an oscillating tooth disc, and a positioning spigot, a fan-shaped convex block and a connecting screw hole structure are arranged between the two discs; however, one of the two movable-tooth half discs of the utility model protrudes a lug to pass through the hole on the shock wave device to be connected with the other half disc, so that the manufacturing cost and the manufacturing difficulty are reduced; the utility model discloses select one of two living fluted discs to process a plurality of lug as required for be connected with another movable tooth to form a pair living fluted disc.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a movable-tooth transmission mechanism in a first prior art;

FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a movable-tooth transmission mechanism in a second prior art;

FIG. 4 is a schematic sectional view along A-A of FIG. 3

FIG. 5 is a schematic structural view of a new structure of a segment-connected oscillating tooth transmission according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 5;

fig. 7 is a schematic perspective view of a movable fluted disc a according to another embodiment of the present invention;

FIG. 8 is a schematic structural view of a new structure of a segment coupled oscillating tooth transmission according to another embodiment of the present invention;

fig. 9 is a schematic sectional structure view along the direction B-B of fig. 8.

In the figure: 1. the movable teeth; 2. a movable fluted disc; 21. a movable fluted disc A; 22. a movable fluted disc B; 23. a movable fluted disc C; 24. a movable fluted disc D; 3. a shock wave device; 31. a first shock wave device; 32. a second shock wave device; 4. an input shaft; 5. a ring gear; 51. a gear ring A; 52. a gear ring B; 6. a sector block; 7. an output tray; 8. a bearing seat; 9. a second bearing; 10. an aperture; 11. a shock wave bearing; 12. a first bearing; 13. a retainer ring; 14. a snap ring; 15. double nuts; 16. a rear end cap; 17. a first sealing ring; 18. a second sealing ring; 19. a front end cap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The present invention will be described in further detail with reference to fig. 5 to 9.

Example 1

A novel sector oscillating tooth transmission device is shown in figures 5-7, and a novel sector connecting type oscillating tooth transmission structure comprises an oscillating tooth 1, a shock wave device 3, an input shaft 4, a gear ring 5 and a transmission mechanism;

the shock wave device 3 is sleeved on a shock wave bearing 11, the shock wave bearing 11 is sleeved on the input shaft 4, and the input shaft 4 is supported by a pair of first bearings 12;

the transmission mechanism comprises a movable fluted disc 2, the movable fluted disc 2 is formed by connecting a movable fluted disc A21 and a movable fluted disc B22 through screws, a plurality of lugs 6 are arranged on a base body of the movable fluted disc A21, the lugs 6 are connected with the movable fluted disc A21 and the movable fluted disc B22 into a whole through screws, holes 10 with the same number as the lugs 6 are machined in corresponding positions on the shock wave device 3, the lugs 6 penetrate through the holes 10 on the shock wave device 3 and are connected with the movable fluted disc B22 into a whole through screws, the size of each hole 10 is an eccentric distance e which is larger than 2 times in the radial direction and the lateral direction, and the eccentric distance e is the distance between the central shaft of the shock wave bearing 11 and the central shaft of the input shaft 4;

the movable fluted disc B22 is connected with the bearing seat 8 through a screw, the output disc 7 is connected with the movable fluted disc A21 through a screw, the movable teeth 1 are placed in a circumferential groove of the movable fluted disc 2, two sides of the movable fluted disc 2 are supported by a second bearing 9, and the movable teeth 1 are respectively contacted with the gear ring 5 and the shock wave device 3;

also comprises a dustproof structure and a locking mechanism.

By adopting the technical scheme: compared with the prior art, the utility model, enlarged the scope of drive ratio: in the original oscillating tooth transmission, two oscillating tooth half discs b are connected by a group of screws from the same circumference distributed on an oscillating tooth roller G, so that the diameter of the oscillating tooth cannot be too small, the number of the oscillating tooth cannot be too large, and the speed ratio of the oscillating tooth transmission cannot be too large; the general speed ratio is more ideal below; by adopting the design of the utility model, the movable fluted disc A21 is provided with a plurality of lugs 6 thereon, and the movable fluted disc B22 is connected with the lugs 6 of the movable fluted disc A21 through screws, so that the roller of the movable tooth 1 can be designed to be small and large, thereby enlarging the range of transmission ratio; the single stage ratio can be increased to 80 to 110;

in addition, one of the two movable tooth half discs, namely the movable tooth disc A21 and the movable tooth disc B22, is provided with a lug 6 according to requirements, and the lug 6 passes through a hole 10 on the shock wave device 3 to be connected with the other movable tooth half disc, namely one of the movable tooth disc A21 and the movable tooth disc B22, so that the roller of the movable tooth 1 can be designed to be smaller and larger, and the range of the transmission ratio is enlarged; the single stage ratio can be increased to 80 to 110.

Compared with the prior art, the utility model, simplified the structure of oscillating fluted disc 2: the original oscillating tooth disc consists of an oscillating tooth half disc and an oscillating tooth disc, and a positioning spigot, a fan-shaped convex block and a connecting screw hole structure are arranged between the two discs; however, one of the two movable-tooth half discs of the utility model protrudes a lug 6 to pass through the hole on the shock wave device 3 to be connected with the other half disc, so that the manufacturing cost and the manufacturing difficulty are reduced; the utility model discloses select as required to process a plurality of lug in two living fluted discs 2 for be connected with another movable tooth 1 to form a pair living fluted disc 2.

Preferably, the form of the projection 6 may be fan-shaped, rectangular or other forms.

Preferably, the dustproof structure comprises a retaining ring 13, and the retaining ring 13 is installed between the shock wave bearing 11 and the first bearing 12; the locking mechanism comprises a clamping ring 14 and a double nut 15, and the first bearing 12 and the shock wave bearing 11 are locked by the retaining ring 13 through the clamping ring 14 and the double nut 15.

By adopting the technical scheme: the stability between the first bearing 12 and the shock wave bearing 11 is improved.

Preferably, the dustproof structure further comprises a rear end cover 16, and the rear end cover 16 is mounted on the right side of the gear ring 5 through screws.

By adopting the technical scheme: the dust-proof effect of the device is improved by the rear end cover 16.

Preferably, the dustproof structure further comprises a first sealing ring 17 and a second sealing ring 18, the first sealing ring 17 is installed between the output disc 7 and the gear ring 5, and the second sealing ring 18 is installed between the rear end cover 16 and the input shaft 4.

By adopting the technical scheme: the sealing performance of the device is further improved through the first sealing ring 17 and the second sealing ring 18, and the dustproof effect of the device is further improved.

Preferably, the dustproof structure further comprises a front end cover 19, and the front end cover 19 is buckled inside a clamping hole in the middle of the output disc 7.

By adopting the technical scheme: the front cover 19 prevents dust from entering the interior of the hole 10 in the middle of the output disc 7 and affecting the performance of the device.

Preferably, at least two holes 10 are opened on the shock wave device 3.

Through the technical scheme, 2-12 holes 10 can be arranged generally, a plurality of lugs 6 can be arranged in the holes 10, the number of the lugs 6 is determined according to the sizes and loads of the shock wave device 3 and the oscillating fluted disc 2, and 2-12 lugs 6 can be arranged generally.

Example 2

In order to transmit larger torque and reduce vibration by balancing internal stress, an embodiment 2 is arranged;

embodiment 2 is substantially the same as embodiment 1, except that two or more rows of movable teeth 1 are adopted for driving and are used in series, and each row is symmetrically distributed along the circumferential direction, as shown in fig. 7 and 8: the design speed ratio of the embodiment is 60, and by adopting a tooth drawing technology, 30 movable tooth grooves are uniformly distributed on each movable tooth disc 2; the two sets of shock absorbers 3 are characterized in that a first shock absorber 31 and a second shock absorber 32 are oppositely arranged at 180 degrees, a gear ring A51 and a gear ring B52 are oppositely arranged at 180 degrees, a movable fluted disc A21 and a movable fluted disc D24 are provided with lugs 6, wherein the head of the lug 6 on the movable fluted disc A21 is provided with a slightly smaller sector arc for installing and clamping a movable fluted disc B22 and a movable fluted disc C23;

practice of the embodiment proves that the scheme has the characteristics of small size, large speed ratio, low processing cost, high precision, low noise and high efficiency, and is suitable for the application range of the high-precision speed reducer.

In conclusion, the structure has the characteristics of small volume, large speed ratio, low processing cost, high precision, low noise and high efficiency, is suitable for the application range of a high-precision speed reducer, and reduces the manufacturing cost and the manufacturing difficulty; one of the movable fluted discs is processed with a plurality of convex blocks for connecting with the other movable teeth to form a pair of movable fluted discs.

The part not involved in the utility model is the same as the prior art or can be realized by adopting the prior art. The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a new structure of sector connection formula oscillating tooth transmission which characterized in that includes:

a shock wave device (3);

the transmission mechanism comprises a movable fluted disc (2), and the movable fluted disc (2) comprises a movable fluted disc A (21) and a movable fluted disc B (22);

a plurality of lugs (6) are arranged on the movable fluted disc A (21) or the movable fluted disc B (22), holes (10) with the same number as the lugs (6) are processed at corresponding positions on the shock wave device, and the lugs (6) penetrate through the holes (10) on the shock wave device (3) and are connected with the other movable fluted disc into a whole through a connecting piece.

2. The new structure of segment-connected oscillating tooth transmission of claim 1, characterized in that: the size of the hole (10) is larger than the eccentricity e which is 2 times in the radial direction and the lateral direction;

wherein the eccentricity e is the distance between the central axis of the shock wave bearing (11) and the central axis of the input shaft (4).

3. The new structure of segment-connected oscillating tooth transmission as claimed in claim 2, wherein: further comprising: the movable gear (1), the input shaft (4) and the gear ring (5);

the shock wave device (3) is sleeved on the shock wave bearing (11), the shock wave bearing (11) is sleeved on the input shaft (4), and the input shaft (4) is supported through the pair of first bearings (12).

4. The new structure of segment-connected oscillating tooth transmission of claim 3, characterized in that:

the movable fluted disc B (22) is connected with the bearing seat (8) through a connecting piece, the output disc (7) is connected with the movable fluted disc A (21) through a connecting piece, the movable teeth (1) are placed in a circumferential groove of the movable fluted disc (2), two sides of the movable fluted disc (2) are supported by a second bearing (9), and the movable teeth (1) are respectively contacted with the gear ring (5) and the shock wave device (3).

5. The new structure of segment-connected oscillating tooth transmission as claimed in claim 4, wherein: still include dustproof construction, dustproof construction includes retaining ring (13), retaining ring (13) are installed shock wave bearing (11) with between first bearing (12).

6. The new structure of segment-connected oscillating tooth transmission as claimed in claim 5, wherein: still include locking mechanism, locking mechanism includes snap ring (14) and two nuts (15), retaining ring (13) are passed through snap ring (14) with two nuts (15) will first bearing (12) with shock wave bearing (11) are locked.

7. The new structure of segment-connected oscillating tooth transmission of claim 6, characterized in that: the dustproof structure further comprises a rear end cover (16), and the rear end cover (16) is installed on the right side of the gear ring (5) through a screw; the dustproof structure further comprises a front end cover (19), and the front end cover (19) is buckled inside a clamping hole in the middle of the output disc (7).

8. The new structure of segment-connected oscillating tooth transmission as claimed in claim 7, wherein: the dustproof structure further comprises a first sealing ring (17) and a second sealing ring (18), the first sealing ring (17) is installed between the output disc (7) and the gear ring (5), and the second sealing ring (18) is installed between the rear end cover (16) and the input shaft (4).

9. The new structure of segment-connected oscillating tooth transmission of claim 8, wherein: at least two holes (10) are formed in the shock wave device (3); the projections (6) may be in the form of sectors or rectangles.

10. The new structure of segment-connected oscillating tooth transmission of claim 9, wherein: two or more rows of movable fluted discs are connected in series, and each row of movable fluted discs are symmetrically distributed along the circumferential direction.