Hollow rotating platform

Abstract

The utility model relates to the field of rotary platform especially, it relates to hollow rotary platform, the outside of turret is annular array and is equipped with a plurality of rollers, and the assembly gap is left between adjacent rollers to engage cam, and cam rotates and installs one side in the box body inside, and one end of cam is connected with the shaft coupling, in the utility model, the cam and the roller on the turret form the continuous rolling engagement, through the cam ridge surface to the roller exert radial force, form the continuous rolling friction transmission, and the tapered roller bearing arranged at the cam can effectively guarantee the rotation stability of cam, and the cross roller bearing and the deep groove ball bearing are installed before and after the turret, when the turret can work stably when receiving radial axial force, and the cam ridge surface and the roller pre -press engagement can effectively eliminate the back gap to improve the transmission efficiency, precision and stability.

Description

Technical Field

[0001] This utility model relates to the field of rotating platform technology, and in particular to a hollow rotating platform. Background Technology

[0002] Rotary platforms are typically used to install mechanical parts that require rotation and are widely used in filling, dispensing, packaging, cleaning, printing, and other applications.

[0003] Some existing traditional hollow rotary platforms use servo motors to drive worm gear transmission mechanisms to achieve rotation and positioning. However, because the worm gear assembly requires a clearance, otherwise it will jam, resulting in backlash during transmission. Moreover, the wear caused by sliding friction of the worm gear is significant, which makes it impossible to guarantee transmission accuracy and positioning accuracy, and thus cannot be used for a long time. This issue urgently needs to be addressed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hollow rotating platform.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A hollow rotating platform includes a housing, a turret is rotatably mounted in the middle of the housing, and multiple rollers are mounted in a circular array on the outer side of the turret. There is an assembly gap between adjacent rollers to engage a cam. The cam is rotatably mounted on one side inside the housing, and one end of the cam is connected to a coupling. The turret is coaxially fixed to the output disk and locked in place on the inner ring of the cross roller bearing located in the middle of the housing. The outer ring of the deep groove ball bearing is mounted on one side of the housing via a bearing back cover and a retaining spring, while the inner ring of the deep groove ball bearing is fitted onto one side of the turret.

[0006] Furthermore, in a preferred configuration, the cam is preloaded by an eccentric sleeve, which ensures that the cam ridge surface fits tightly against the roller.

[0007] In addition, a preferred structure is that the outer ring of the crossed roller bearing is mounted on the housing via a bearing cap and screws on the upper side of the housing.

[0008] In addition, a preferred structure is that an eccentric sleeve is fixedly installed on one side of the housing by screws, and an adjusting nut is installed inside the eccentric sleeve. The adjusting nut is screwed into the eccentric sleeve by external threads and is tightly fitted to the outer ring of the tapered roller bearing.

[0009] Furthermore, in a preferred configuration, the outer ring of the tapered roller bearing is pressed into the eccentric sleeve, and the inner ring of the tapered roller bearing is pressed into one end of the cam.

[0010] The beneficial effects of this utility model are as follows: In this invention, the cam and the rollers on the turret form a continuous rolling engagement. The cam ridge surface applies a radial force to the rollers, forming a continuous rolling friction transmission. The tapered roller bearing located at the cam effectively ensures the rotational stability of the cam. Crossed roller bearings and deep groove ball bearings are installed at the front and rear of the turret, which allows the turret to work stably when subjected to radial and axial forces. The preload engagement between the cam ridge surface and the rollers effectively eliminates backlash, thereby improving transmission efficiency, accuracy, and stability. Attached Figure Description

[0011] Figure 1 The internal structural cross-section of the hollow rotating platform proposed in this utility model. Figure 1 ; Figure 2 The internal structural cross-section of the hollow rotating platform proposed in this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the external structure of the hollow rotating platform proposed in this utility model.

[0012] In the diagram: 1. Motor mount; 2. Coupling; 3. Eccentric sleeve; 4. Adjusting nut; 5. Tapered roller bearing; 6. Cam; 7. Roller; 8. Turret; 9. Housing; 10. Output disc; 11. Front cover oil seal; 12. Bearing gland; 13. Cross roller bearing; 14. Deep groove ball bearing; 15. Bearing rear cover; 16. Snap ring; 17. Rear cover oil seal. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Reference Figure 1-3 A hollow rotating platform includes a housing 9. A turret 8 is rotatably mounted in the middle of the housing 9. Multiple rollers 7 are installed in a circular array on the outer side of the turret 8. There is an assembly gap between adjacent rollers 7 to engage cams 6. The cams 6 are rotatably mounted inside the housing 9 on one side, and one end of the cams 6 is connected to the coupling 2. The turret 8 is coaxially fixed to the output disk 10 and the turret 8 is locked in place on the inner ring of the cross roller bearing 13 located in the middle of the housing 9; The outer ring of the deep groove ball bearing 14 is mounted on one side of the housing 9 via the bearing back cover 15 and the snap ring 16, while the inner ring of the deep groove ball bearing 14 is fitted onto one side of the turret 8.

[0015] The cam 6 adjusts the preload through the eccentric sleeve 3, so that the convex ridge surface of the cam 6 fits tightly with the roller 7.

[0016] The outer ring of the cross roller bearing 13 is mounted on the upper side of the housing 9 by means of bearing cover 12 and screws.

[0017] An eccentric sleeve 3 is fixedly installed on one side of the housing 9 by screws. An adjusting nut 4 is installed inside the eccentric sleeve 3. The adjusting nut 4 is screwed into the eccentric sleeve 3 by external threads and is tightly attached to the outer ring of the tapered roller bearing 5.

[0018] A motor mount 1 is installed on one side of the housing 9, and a coupling 2 is installed in the middle of the motor mount 1.

[0019] The outer ring of the tapered roller bearing 5 is pressed into the eccentric sleeve 3, and the inner ring of the tapered roller bearing 5 is pressed into one end of the cam 6.

[0020] A rear cover oil seal 17 is installed on one side of the bearing rear cover 15.

[0021] In this embodiment, the coupling 2 is connected to the cam 6, and the coupling 2 is driven to the motor shaft of the motor mounted on the motor base 1 to realize the rotational movement of the cam 6. When the motor starts, the convex ridge surface of the cam 6 forms a continuous rolling engagement with the roller 7 on the turret 8. The cam ridge surface applies a radial force to the roller 7, thereby driving the turret 8 to rotate synchronously, forming a pure rolling friction transmission.

[0022] Unlike traditional worm gear and gear transmissions, this device uses rolling friction transmission between cam 6 and roller 7, eliminating backlash to improve transmission efficiency and extend service life.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hollow rotating platform, comprising a housing (9), characterized in that, The middle of the housing (9) is rotatably equipped with a turret (8). Multiple rollers (7) are installed in a ring array on the outside of the turret (8). There is an assembly gap between adjacent rollers (7) to engage the cam (6). The cam (6) is rotatably installed on one side inside the housing (9), and one end of the cam (6) is connected to the coupling (2). The turret (8) is coaxially fixed to the output disk (10), and the turret (8) is locked to the inner ring of the cross roller bearing (13) set in the middle of the housing (9); The outer ring of the deep groove ball bearing (14) is mounted on one side of the housing (9) by means of the bearing back cover (15) and the snap ring (16), while the inner ring of the deep groove ball bearing (14) is fitted onto one side of the turret (8).

2. The hollow rotating platform according to claim 1, characterized in that, The cam (6) is preloaded by adjusting the eccentric sleeve (3) so that the convex ridge surface of the cam (6) fits tightly against the roller (7).

3. The hollow rotating platform according to claim 1, characterized in that, The outer ring of the cross roller bearing (13) is mounted on the upper side of the housing (9) by means of a bearing cover (12) and screws.

4. The hollow rotating platform according to claim 1, characterized in that, An eccentric sleeve (3) is fixedly installed on one side of the housing (9) by screws. An adjusting nut (4) is installed inside the eccentric sleeve (3). The adjusting nut (4) is screwed into the eccentric sleeve (3) by external threads and is close to the outer ring of the tapered roller bearing (5).

5. The hollow rotating platform according to claim 4, characterized in that, The outer ring of the tapered roller bearing (5) is pressed into the eccentric sleeve (3), and the inner ring of the tapered roller bearing (5) is pressed into one end of the cam (6).

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