CN210440528U - Speed reducer with hollow rotating platform - Google Patents
Speed reducer with hollow rotating platform Download PDFInfo
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- CN210440528U CN210440528U CN201921599891.1U CN201921599891U CN210440528U CN 210440528 U CN210440528 U CN 210440528U CN 201921599891 U CN201921599891 U CN 201921599891U CN 210440528 U CN210440528 U CN 210440528U
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Abstract
The utility model relates to a decelerator technical field, specifically speaking relates to a cavity rotary platform speed reducer. The device comprises a shell, wherein an input shaft, an index plate and an output flange plate are assembled on the shell; the input shaft is provided with an indexing cam; the indexing disc and the output flange plate are fixedly connected through bolts and are assembled on the shell through a first crossed roller bearing and a second crossed roller bearing; the circumference of the indexing disc is provided with a plurality of indexing needle bearings which are uniformly distributed along the circumferential direction of the indexing disc and matched with the indexing cam; and the fixed disk surface of the output flange plate is provided with a connecting screw hole. The utility model discloses a roll transmission, frictional force is little, and transmission precision is high, can vary the rotational speed according to the user demand moreover, has realized numerical control lathe's high-accuracy graduation.
Description
Technical Field
The utility model relates to a decelerator technical field, specifically speaking relates to a cavity rotary platform speed reducer.
Background
In general mechanical transmission, the worm gear and the worm are widely applied because of the advantages of stable work, compact structure, self-locking realization and the like, but the material for manufacturing the worm gear is copper alloy, the material hardness is low, the strength is low, and the worm gear cannot bear large torque; meanwhile, the sliding friction generated when the worm and gear are meshed is large, so that heating and abrasion can be caused in the operation process, and the transmission efficiency is reduced; and a gear side gap exists in the meshing process of the worm wheel and the worm, so that mechanical transmission errors are caused, and impact, vibration and noise are also brought.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cavity rotary platform speed reducer, technical problem more than solving.
In order to solve the above problems, the utility model adopts the following technical scheme:
a hollow rotary platform speed reducer comprises a shell, wherein an input shaft, an index plate and an output flange plate are assembled on the shell; the input shaft is provided with an indexing cam, and two ends of the input shaft respectively penetrate through the side wall of the shell and are assembled on the shell through a tapered roller bearing and a bearing seat fixedly assembled on the side wall of the shell; the indexing disc and the output flange plate are fixedly connected through bolts and are assembled on the shell through a first crossed roller bearing and a second crossed roller bearing, wherein the first crossed roller bearing is fixed through a first gland, and the second crossed roller bearing is fixed through a second gland; the circumference of the indexing disc is provided with a plurality of indexing needle bearings which are uniformly distributed along the circumferential direction of the indexing disc and matched with the indexing cam; and the fixed disk surface of the output flange plate is provided with a connecting screw hole.
Preferably: the index plate and the output flange plate are both designed to be hollow, and cavities of the index plate and the output flange plate are communicated.
Preferably: an O-shaped sealing ring is arranged between the bearing seat and the shell, and a first framework oil seal is arranged between the input shaft and the bearing seat.
Preferably: a second framework oil seal is arranged between the dividing plate and the first gland; and a third framework oil seal is arranged between the output flange plate and the second gland.
Has the advantages that: compared with the prior art, the utility model discloses a rolling transmission, frictional force is little, and transmission precision is high, can vary the rotational speed according to the user demand moreover, has realized numerical control lathe's high-accuracy graduation.
Drawings
FIG. 1 is a schematic view of the cross-sectional structure of the present invention along the axial direction of the input shaft;
fig. 2 is a schematic cross-sectional view of a-a in fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Examples
Referring to fig. 1-2, the hollow rotary platform reducer of the present embodiment includes a housing 1, and an input shaft 2, an index plate 3, and an output flange plate 4 are assembled on the housing 1.
The input shaft 2 is provided with an indexing cam 5, and two ends of the input shaft 2 respectively penetrate through the side wall of the shell 1 and are assembled on the shell 1 through a tapered roller bearing 6 and a bearing seat 7 fixedly assembled on the side wall of the shell 1.
The indexing disc 3 and the output flange plate 4 are fixedly connected through bolts and assembled on the shell 1 through a first crossed roller bearing 8 and a second crossed roller bearing 9, wherein the first crossed roller bearing 8 is fixed through a first gland 10, and the second crossed roller bearing 9 is fixed through a second gland 11. The assembly of the dividing plate 3 and the output flange plate 4 adopts a crossed roller bearing, so that the torque and the rigidity are improved, and the bearing is more stable and heavy. The circumference of the dividing plate 3 is provided with a plurality of dividing needle roller bearings 12 which are uniformly distributed along the circumferential direction of the dividing plate 3 and are matched with the dividing cam 5. The fixing plate surface of the output flange plate 4 is provided with a connecting screw hole 13, and the wide fixing surface of the output flange plate 4 and the connecting screw hole 13 are designed to enable the connecting piece to be more firmly and stably installed.
In order to meet the situation of complex wiring and tubing, the dividing plate 3 and the output flange plate 4 are both designed to be large-caliber hollow, and the cavities of the dividing plate and the output flange plate are communicated.
In order to prevent the leakage of the lubricating oil in the housing 1, an O-ring 14 is provided between the bearing housing 7 and the housing 1, and a first skeleton oil seal 15 is provided between the input shaft 2 and the bearing housing 7. A second framework oil seal 16 is arranged between the dividing plate 3 and the first gland 10. And a third framework oil seal 17 is arranged between the output flange plate 4 and the second gland 11.
The utility model relates to a brand-new rotatory load decelerator, it transmits torque between power supply and actuating mechanism, according to user demand transform rotational speed, collects high transmission efficiency, high accuracy, high rigidity, high cost performance ratio, has synthesized servo motor, cam wheel splitter and has directly driven the advantage of motor, can be applied to numerical control lathe graduation, high-accuracy gear and directly drive the high positioning accuracy's digital rotary platform occasion. Moreover, each part of the utility model is made of high-quality alloy steel, the surface hardness can reach 58-62HRC after the heat treatment and the low-temperature tempering through carburizing and quenching, and the service life is longer.
The working principle of the utility model is as follows:
during operation, power supply (motor or speed reducer) and the utility model discloses a power input end transmission of input shaft 2 is connected, and indexing cam 5 on the input shaft 2 promotes indexing needle bearing 12 on the graduated disk 3, orders about output flange 4 not intermittent type and rotates. When the input shaft 2 rotates one circle (360 degrees), the output flange plate 4 rotates by the degree of an indexing roller included angle (the included angle between two adjacent indexing needle roller bearings 12), for example, when 20 indexing needle roller bearings 12 are assembled on the indexing disc 3, the output flange plate 4 rotates by 18 degrees, so that the purpose of speed reduction is realized. By controlling the start and stop of the input shaft 2, accurate indexing can be achieved, and different reduction ratios can be obtained by changing the number of the indexing needle bearings 12.
The utility model discloses a roll transmission, frictional force is little, and transmission precision is high, can vary the rotational speed according to the user demand moreover, has realized numerical control lathe's high-accuracy graduation.
The above is only the embodiment of the present invention, not so limit on the other hand through the patent scope of the present invention, all utilize the equivalent structure made in the specification and the attached drawings, directly or indirectly apply to other related technical fields, all with the same principle within the patent protection scope of the present invention.
Claims (4)
1. A hollow rotary platform speed reducer comprises a shell (1), wherein an input shaft (2), an index plate (3) and an output flange plate (4) are assembled on the shell (1); the method is characterized in that: the input shaft (2) is provided with an indexing cam (5), and two ends of the input shaft (2) respectively penetrate through the side wall of the shell (1) and are assembled on the shell (1) through a tapered roller bearing (6) and a bearing seat (7) fixedly assembled on the side wall of the shell (1); the indexing disc (3) and the output flange plate (4) are fixedly connected through bolts and are assembled on the shell (1) through a first crossed roller bearing (8) and a second crossed roller bearing (9), wherein the first crossed roller bearing (8) is fixed through a first gland (10), and the second crossed roller bearing (9) is fixed through a second gland (11); a plurality of indexing needle bearings (12) which are uniformly distributed along the circumferential direction of the indexing disc (3) and are matched with the indexing cam (5) are assembled on the circumference of the indexing disc (3); and a connecting screw hole (13) is formed on the fixed disk surface of the output flange plate (4).
2. The hollow rotary platform reducer of claim 1, wherein: the index plate (3) and the output flange plate (4) are both designed to be hollow, and cavities of the index plate and the output flange plate are communicated.
3. The hollow rotary platform reducer according to claim 1 or 2, wherein: an O-shaped sealing ring (14) is arranged between the bearing seat (7) and the shell (1), and a first framework oil seal (15) is arranged between the input shaft (2) and the bearing seat (7).
4. The hollow rotary platform reducer according to claim 1 or 2, wherein: a second framework oil seal (16) is arranged between the dividing plate (3) and the first gland (10); and a third framework oil seal (17) is arranged between the output flange plate (4) and the second gland (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599891.1U CN210440528U (en) | 2019-09-23 | 2019-09-23 | Speed reducer with hollow rotating platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599891.1U CN210440528U (en) | 2019-09-23 | 2019-09-23 | Speed reducer with hollow rotating platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210440528U true CN210440528U (en) | 2020-05-01 |
Family
ID=70411104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921599891.1U Active CN210440528U (en) | 2019-09-23 | 2019-09-23 | Speed reducer with hollow rotating platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210440528U (en) |
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2019
- 2019-09-23 CN CN201921599891.1U patent/CN210440528U/en active Active
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