CN210566136U

CN210566136U - High-precision hollow rotary platform

Info

Publication number: CN210566136U
Application number: CN201921058333.4U
Authority: CN
Inventors: 颜建军
Original assignee: Wenling Huachi Machinery Co ltd
Current assignee: Wenling Huachi Machinery Co ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-05-19
Anticipated expiration: 2029-07-08

Abstract

The utility model provides a high accuracy cavity rotary platform belongs to the machine-building technical field. It has solved the current hollow rotary platform and has taken up the problem that wearing and tearing are big, the precision is low and area is too big. This high accuracy cavity rotary platform, including the main tank body, link firmly the box lid in the main tank body upper end, set up the output fluted disc in the main tank body, set up in the flange of box lid top and set up in the motor cabinet of main tank body below power supply machine installation, this high accuracy cavity rotary platform still includes by the motor control rotation and with output fluted disc matched with drive shaft, the axis of drive shaft parallels with the axis of output fluted disc, the drive shaft includes journal portion and axle body portion, inwards sunken ring channel has been seted up on the periphery wall of journal portion, circumference evenly distributed in the ring channel can the rotation of a plurality of and with output fluted disc matched with roll member. The utility model has the advantages of small abrasion, high transmission precision, high rigidity and reasonable space layout.

Description

High-precision hollow rotary platform

Technical Field

The utility model belongs to the technical field of the machine-building, a cavity rotary platform is related to, in particular to high accuracy cavity rotary platform.

Background

High accuracy cavity rotary platform is a high accuracy platform that provides rotary power for the installation needs rotatory machine parts to rotate, and the wide application in occasions such as manipulator joint, machine tool machining axle and automatic assembly line have better result of use, and current high accuracy cavity rotary platform can not satisfy people's demand, consequently needs more convenient high accuracy cavity rotary platform. Most numerical control revolving stage adopts servo motor drive turbine worm drive mechanism to reach higher graduation and positioning accuracy at present, because the worm gear meshing gets inseparabler in the assembly, indexing means's transmission accuracy is higher, but adopt turbine worm mechanism can have the problem of wearing and tearing, long-time wearing and tearing can lead to the unable assurance of transmission accuracy, whole indexing means's graduation precision will greatly reduced, high accuracy cavity rotary platform sets up motor and motor shaft on the platform usually simultaneously, because the unreasonable of overall arrangement, can cause the too big shortcoming of area, increase manufacturing cost.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a wearing and tearing are little, transmission precision is high, high rigidity, spatial layout is reasonable high accuracy cavity rotary platform.

The purpose of the utility model can be realized by the following technical proposal: a high-precision hollow rotary platform comprises a main box body, a box body cover fixedly connected to the upper end of the main box body, an output fluted disc arranged in the main box body, a connecting flange arranged above the box body cover and a motor base arranged below the main box body and used for installing a power supply machine, wherein a convex ring which is upwards protruded and is fixedly connected with the connecting flange is arranged at the top of the output fluted disc, the high-precision hollow rotary platform is characterized by further comprising a driving shaft which is controlled by the motor to rotate and is matched with the output fluted disc, the central axis of the driving shaft is parallel to the central axis of the output fluted disc, the driving shaft comprises a shaft neck part and a shaft body part, the diameter of the shaft neck part is larger than that of the shaft body part, the shaft neck part extends into the main box body, the shaft body part extends into the motor base, a circular groove which is sunken inwards is formed in the peripheral wall of the shaft neck part, and a plurality of rolling pieces which can rotate, the rolling elements are used so that they can be brought into play-free rolling engagement with the output toothed disc.

In the high-precision hollow rotary platform, the annular groove forms a shaft neck part into a first shaft disc and a second shaft disc.

In the above high-precision hollow rotary platform, the rolling members are rollers, and the upper and lower ends of the rollers are connected with the first shaft disk and the second shaft disk through bearing parts.

In the high-precision hollow rotary platform, the rolling elements are roller pins, a roller matched with the output fluted disc is arranged on the outer wall of the roller pin in the annular groove, a flat pad is arranged between the roller and the bottom of the first shaft disc, and a flat pad is arranged between the roller and the top of the second shaft disc.

In the above high-precision hollow rotary platform, a bearing seat for mounting the drive shaft is arranged between the main box body and the drive shaft, and a tapered roller bearing is arranged between the bearing seat and the shaft body of the drive shaft.

In foretell high accuracy cavity rotary platform, the main tank body and output fluted disc between be provided with the cross roller bearing who supplies the fixed rotation of output fluted disc, the output fluted disc in be provided with the last clamping ring that links firmly mutually with the main tank body top, main tank body and output fluted disc between be provided with the lower clamping ring that links firmly bottom the output fluted disc, last clamping ring and lower clamping ring support respectively and lean on the upper and lower terminal surface that leans on in cross roller bearing with its axial spacing.

In foretell high accuracy cavity rotary platform, the output fluted disc is close to and is provided with the oil blanket between the lateral wall of last clamping ring and the last clamping ring, box lid and bulge loop between be provided with the oil blanket, bearing frame and axle body portion between be located tapered roller bearing below and be provided with the oil blanket.

In the above high-precision hollow rotary platform, an O-ring for sealing is arranged between the main box body and the bearing seat.

In the above high-precision hollow rotary platform, the motor base is fixedly connected to the lower end of the bearing base through a bolt.

Compared with the prior art, the high-precision hollow rotary platform has the following advantages:

1. the arrangement of the driving shaft solves the abrasion problem caused by the traditional worm and gear mechanism, keeps higher precision, ensures the capability of bearing heavy load and greatly improves the precision;

2. all driving parts in the driving shaft are in rolling contact, tooth knocking sound and vibration are not generated, the crossed roller bearings can strongly support external force acting on the rotary table, the high-precision hollow rotary platform is reasonable in layout, small in occupied area and capable of effectively reducing production cost, and the high-precision hollow rotary platform conforms to a standard motor installation corresponding table and is convenient for installation of motors.

Drawings

Fig. 1 is a schematic perspective view of a hollow rotary platform in the high-precision hollow rotary platform.

Fig. 2 is a schematic sectional structural view of a hollow rotary platform in the high-precision hollow rotary platform.

FIG. 3 is a schematic sectional view showing the structure of the high-precision hollow rotary platform according to example 1.

FIG. 4 is a schematic sectional view showing the structure of the high-precision hollow rotary platform according to example 2.

In the figure, 1, a main box body; 2. a box cover; 3. an output fluted disc; 4. a connecting flange; 5. a motor base; 6. a convex ring; 7. a drive shaft; 8. a journal portion; 9. a shaft body portion; 10. a first shaft disc; 11. a second shaft disc; 12. an annular groove; 13. a bearing seat; 14. a tapered roller bearing; 15. an O-shaped sealing ring; 16. a crossed roller bearing; 17. pressing a ring; 18. a lower pressure ring; 19. oil sealing; 20. a rolling member; 21. a roller; 22. a bearing portion; 23. rolling needles; 24. a drum; 25. and (7) flattening the cushion.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the high-precision hollow rotary platform comprises a main box body 1, a box body cover 2 fixedly connected to the upper end of the main box body 1, an output fluted disc 3 arranged in the main box body 1, a connecting flange 4 arranged above the box body cover 2, and a motor base 5 arranged below the main box body 1 and used for installing a motor, wherein a convex ring 6 protruding upwards for fixedly connecting the connecting flange 4 is arranged at the top of the output fluted disc 3, the high-precision hollow rotary platform further comprises a driving shaft 7 controlled by the motor to rotate and matched with the output fluted disc 3, the central axis of the driving shaft 7 is parallel to the central axis of the output fluted disc 3, the driving shaft 7 comprises a shaft neck part 8 and a shaft body part 9, the diameter of the shaft neck part 8 is larger than that of the shaft body part 9, the shaft neck part 8 forms a first shaft disc 10 and a second shaft disc 11 by an annular groove 12, the shaft neck part 8 extends into the main box body 1, the shaft body part 9 extends into the motor base 5, the, a plurality of rolling pieces 20 which can rotate and are matched with the output fluted disc 3 are uniformly distributed in the annular groove 12 in the circumferential direction, and the rolling pieces 20 are applied so as to realize gapless rolling engagement with the output fluted disc 3. During operation, the motor drives the driving shaft 7 to rotate, the rolling member 20 moves circumferentially therewith to drive the output fluted disc 3 to rotate, otherwise, the output fluted disc 3 drives the rolling member 20 to move in a rotation process to form surface-to-surface friction contact, so that abrasion is reduced, a bearing seat 13 for mounting the driving shaft 7 is arranged between the main box body 1 and the driving shaft 7, a tapered roller bearing 14 is arranged between the bearing seat 13 and the shaft body part 9 of the driving shaft 7, and the motor base 5 is fixedly connected to the lower end part of the bearing seat 13 through bolts.

To further improve the sealing performance, an O-ring 15 for sealing is provided between the main casing 1 and the bearing housing 13.

In more detail, a crossed roller bearing 16 for fixing and rotating the output fluted disc 3 is arranged between the main box body 1 and the output fluted disc 3, an upper press ring 17 fixedly connected with the top of the main box body 1 is arranged in the output fluted disc 3, a lower press ring 18 fixedly connected with the bottom of the output fluted disc 3 is arranged between the main box body 1 and the output fluted disc 3, the upper press ring 17 and the lower press ring 18 are respectively abutted against the upper end surface and the lower end surface of the crossed roller bearing 16 to limit the axial direction of the crossed roller bearing, the crossed roller bearing 16 can strongly support an external force acting on a turntable, an oil seal 19 is arranged between the output fluted disc 3 and the upper press ring 17, the oil seal 19 is arranged between the box body cover 2 and the convex ring 6, and the oil seal 19 is arranged between the bearing seat 13 and the shaft body part 9 and.

Example 1

In more detail, as shown in fig. 3, the rolling member 20 is a roller 21, the upper and lower ends of the roller 21 are connected to the first shaft disc 10 and the second shaft disc 11 through a bearing portion 22, the motor drives the driving shaft 7 to rotate, and the roller 21 connected to the driving shaft 7 through the bearing portion 22 moves circumferentially therewith, so as to drive the output fluted disc 3 engaged with the roller 21 to rotate.

Example 2

In more detail, as shown in fig. 4, the rolling element 20 is a roller pin 23, a roller 24 which is matched with the output fluted disc 3 is arranged on the outer wall of the roller pin 23 in the annular groove 12, a flat pad 25 is arranged between the roller 24 and the bottom of the first shaft disc 10, and a flat pad 25 is arranged between the roller 24 and the top of the second shaft disc 11. The motor rotates the driving shaft 7, and the roller 24 engaged with the driving shaft 7 rotates with the driving shaft 7, thereby rotating the output fluted disc 3.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A high-precision hollow rotary platform comprises a main box body (1), a box body cover (2) fixedly connected to the upper end of the main box body (1), an output fluted disc (3) arranged in the main box body (1), a connecting flange (4) arranged above the box body cover (2) and a motor base (5) arranged below the main box body (1) and used for installing a motor, wherein a convex ring (6) which is upwards protruded and used for fixedly connecting the connecting flange (4) is arranged at the top of the output fluted disc (3), the high-precision hollow rotary platform is characterized by further comprising a driving shaft (7) which is controlled by the motor to rotate and is matched with the output fluted disc (3), the central axis of the driving shaft (7) is parallel to the central axis of the output fluted disc (3), the driving shaft (7) comprises a shaft neck part (8) and a shaft body part (9), and the diameter of the shaft neck part (8) is larger than that of the shaft body part (9), the utility model discloses a motor generator, including the motor base, journal portion (8) stretch into in the main tank body (1), axle body portion (9) stretch into in motor cabinet (5), set up inside sunken ring channel (12) on the periphery wall of journal portion (8), ring channel (12) interior circumferential direction evenly distributed have a plurality of can rotate and with output fluted disc (3) matched with rolling member (20), thereby applied rolling member (20) and made its and output fluted disc (3) realize zero clearance roll meshing.

2. A hollow rotary platform with high precision according to claim 1 characterized by that, the annular groove (12) forms the journal part (8) into a first (10) and a second (11) hub.

3. A hollow rotary platform with high precision as claimed in claim 2, characterized in that the rolling elements (20) are rollers (21), and the upper and lower ends of the rollers (21) are connected with the first shaft disk (10) and the second shaft disk (11) through bearing parts (22).

4. A hollow rotary platform of high accuracy as claimed in claim 2, characterized in that the rolling members (20) are needle rollers (23), a roller (24) matching with the output fluted disc (3) is arranged on the outer wall of the needle rollers (23) in the annular groove (12), a flat pad (25) is arranged between the roller (24) and the bottom of the first shaft disc (10), and a flat pad (25) is arranged between the roller (24) and the top of the second shaft disc (11).

5. A hollow rotary platform with high precision according to claim 1, characterized in that a bearing seat (13) for installing the driving shaft (7) is arranged between the main box body (1) and the driving shaft (7), and a tapered roller bearing (14) is arranged between the bearing seat (13) and the shaft body (9) of the driving shaft (7).

6. A high accuracy cavity rotary platform according to claim 5, characterized in that, the main tank body (1) and output fluted disc (3) between be provided with and supply output fluted disc (3) fixed rotatory cross roller bearing (16), output fluted disc (3) in be provided with the last clamping ring (17) that links firmly mutually with main tank body (1) top, main tank body (1) and output fluted disc (3) between be provided with the lower clamping ring (18) that links firmly with output fluted disc (3) bottom, last clamping ring (17) and lower clamping ring (18) support respectively and lean on the upper and lower terminal surface in cross roller bearing (16) with its axial spacing.

7. A high-precision hollow rotary platform according to claim 6, wherein an oil seal (19) is arranged between the side wall of the output fluted disc (3) close to the upper compression ring (17) and the upper compression ring (17), an oil seal (19) is arranged between the box body cover (2) and the convex ring (6), and an oil seal (19) is arranged between the bearing seat (13) and the shaft body (9) and below the tapered roller bearing (14).

8. A hollow rotary platform of high precision according to claim 5 characterized in that an O-ring (15) is provided between the main box (1) and the bearing seat (13).

9. A high accuracy hollow rotary platform according to claim 5 characterized in that the motor base (5) is bolted to the lower end of the bearing block (13).