A heavy load rotary platform for vertical and horizontal use

Abstract

The utility model relates to the field of automation assembly especially relates to a vertical and horizontal shared heavy load type rotary platform, including the box, the cam mandrel is rotatably installed in the box through first bearing assembly, second bearing assembly, and the cam mandrel is driven by drive assembly, the variable pitch cylindrical cam is set up on the cam mandrel, and the disc surface is rotatably connected on the box through third bearing assembly, in the utility model, the heavy load type rotary platform is formed by the cooperation setting of drive assembly, box, cam mandrel, variable pitch cylindrical cam, roller, and the variable pitch cylindrical cam, roller is driven by drive assembly and rotates, and the disc surface is driven to rotate, and the variable pitch cylindrical cam roller can be pre -pressed, makes transmission zero backlash, and the variable pitch cylindrical cam is rolling friction and has the self -locking ability, can prolong the service life, and can bear the big inertia impact.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly technology, and in particular to a heavy-duty rotary platform that can be used both vertically and horizontally. Background Technology

[0002] Rotary platforms are commonly used to mount mechanical parts that require rotation, and are widely used in automotive welding, high-precision screen printing, vertical rotary hubs, automated assembly, and other applications. Most existing platforms use servo motors to drive worm gear transmission mechanisms or curved cam and roller transmission mechanisms to achieve rotation and positioning. Because worm gear assembly requires clearance to avoid jamming, it results in backlash during transmission. Furthermore, the sliding friction of the worm gear easily causes wear, leading to inconsistent transmission accuracy, poor positioning accuracy, and unsuitability for long-term use. Curved cam and sub-transmission mechanisms have poor self-locking capabilities; under heavy loads, the impact of large inertia can cause the platform to move erratically, resulting in inaccurate positioning and unstable accuracy. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a heavy-duty rotating platform that can be used both vertically and horizontally.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A heavy-duty rotating platform for both vertical and horizontal use includes a housing. A cam spindle is rotatably mounted inside the housing via a first bearing assembly and a second bearing assembly. The cam spindle is driven by a drive assembly. A variable-pitch cylindrical cam is sleeved on the cam spindle. A disc is rotatably connected to the housing via a third bearing assembly. An oil seal seat is provided on the housing. An oil seal outer ring is provided on the disc. A TC oil seal is provided between the oil seal outer ring and the oil seal seat. The inner side of the disc is provided with several rollers, which are in contact with the contour of the variable pitch cylindrical cam. When the drive assembly drives the cam spindle and the variable pitch cylindrical cam to rotate, the rollers drive the disc to rotate. Furthermore, in a preferred configuration, the first bearing assembly includes a first tapered roller bearing and an input bearing sleeve, with the outer ring of the first tapered roller bearing installed inside the input bearing sleeve and the inner ring of the first tapered roller bearing installed on the cam spindle.

[0005] Furthermore, in a preferred configuration, the first bearing assembly further includes an input force adjusting nut that is screwed into the input force bearing sleeve via its external thread and abuts against the outer ring end face of the first tapered roller bearing for adjusting bearing preload.

[0006] Furthermore, in a preferred configuration, the second bearing assembly includes a bearing housing fixed to the housing by fasteners for supporting the other end of the cam spindle, and a second tapered roller bearing is disposed within the bearing housing.

[0007] In addition, a preferred structure is that the drive assembly includes a reducer and a motor, with the motor fixedly connected to the input end of the reducer and the output end of the reducer drivenly connected to the cam spindle.

[0008] In addition, a preferred structure is that the reducer is fixed to the input bearing sleeve, and the input bearing sleeve is fixedly connected to the housing by fasteners.

[0009] The beneficial effects of this utility model are as follows: In this invention, a heavy-duty rotary platform is formed by the coordinated arrangement of a drive assembly, a housing, a cam spindle, a variable-pitch cylindrical cam, and rollers. The drive assembly drives the variable-pitch cylindrical cam and rollers to rotate, thereby causing the disc surface to rotate. The variable-pitch cylindrical cam rollers can be preloaded to achieve zero backlash in the transmission. The variable-pitch cylindrical cam uses rolling friction and has self-locking capability, which can extend its service life and withstand large inertia impacts. Attached Figure Description

[0010] Figure 1 This is a cross-sectional structural schematic diagram of a heavy-duty rotating platform that can be used both vertically and horizontally, as proposed in this utility model. Figure 2 This is a side sectional view of the structural diagram of a heavy-duty rotating platform that can be used both vertically and horizontally, as proposed in this utility model. Figure 3 This is a schematic diagram of a variable-pitch cylindrical cam and its roller assembly. Figure 4 This is a structural schematic diagram of a heavy-duty rotating platform that can be used both vertically and horizontally, as proposed in this utility model.

[0011] In the diagram: 1. Motor; 2. Reducer; 3. Cam spindle; 4. TC oil seal; 5. Input side adjusting nut; 6. Input bearing sleeve; 7. First tapered roller bearing; 8. Variable pitch cylindrical cam; 9. Locking nut; 10. Second tapered roller bearing; 11. Adjusting nut; 12. Bearing housing; 13. VK end cover; 14. Housing; 15. Oil seal seat; 16. Oil seal; 17. Oil seal outer ring; 18. Disc; 19. Crossed roller bearing; 20. Roller; 21. Adjustment window cover. Detailed Implementation

[0012] 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.

[0013] Reference Figure 1-4A heavy-duty rotating platform suitable for both vertical and horizontal use includes a housing 14. A cam spindle 3 is rotatably mounted inside the housing 14 via a first bearing assembly and a second bearing assembly. The cam spindle 3 is driven by a drive assembly. A variable-pitch cylindrical cam 8 is sleeved on the cam spindle 3. The cam spindle 3 and the variable-pitch cylindrical cam 8 are connected by a locking nut 9. A disc 18 is rotatably connected to the housing 14 via a third bearing assembly. An oil seal seat 15 is provided on the housing 14. An oil seal outer ring 17 is provided on the disc 18. A TC oil seal 16 is provided between the oil seal outer ring 17 and the oil seal seat 15. The TC oil seal can effectively prevent the lubricating oil inside the housing from leaking out, and at the same time prevent external dust, chips and other contaminants from entering.

[0014] Several rollers 20 are arranged on the inner side of the disc 18. The rollers 20 are in contact with the contour of the variable pitch cylindrical cam 8. When the drive assembly drives the cam spindle 3 and the variable pitch cylindrical cam 8 to rotate, the rollers 20 drive the disc 18 to rotate. The variable pitch cylindrical cam 8 drives the multiple rollers 20 in contact with its contour by rotating, thereby driving the disc 18 to rotate. At the same time, the variable pitch cylindrical cam 8 and the rollers 20 are driven by rolling friction, with no backlash, which ensures transmission efficiency, reduces wear, and extends service life. In addition, the variable pitch cylindrical cam has a self-locking ability and can withstand large inertia impacts.

[0015] The first bearing assembly includes a first tapered roller bearing 7 and an input bearing sleeve 6. The outer ring of the first tapered roller bearing 7 is installed inside the input bearing sleeve 6, and the inner ring of the first tapered roller bearing 7 is installed on the cam spindle 3. The first bearing assembly also includes an input adjusting nut 5, which is screwed into the input bearing sleeve 6 through its external thread and abuts against the end face of the outer ring of the first tapered roller bearing 7, for adjusting the bearing preload. The second bearing assembly includes a bearing housing 12, which is fixed to the housing 14 by fasteners and is used to support the other end of the cam spindle 3. A second tapered roller bearing 10 is disposed inside the bearing housing 12.

[0016] The drive assembly includes a reducer 2 and a motor 1. The motor 1 is fixedly connected to the input end of the reducer 2, and the output end of the reducer 2 is drivenly connected to the cam spindle 3. The reducer 2 is fixed to the input bearing sleeve 6, which is fixedly connected to the housing 14 by fasteners. The reducer 2 being fixed to the input bearing sleeve 6 ensures that the weight and working reaction torque of the motor and reducer are directly transmitted to the robust housing 14 through the input bearing sleeve 6, rather than being borne by the cam spindle 3. This avoids additional bending moments that could cause the spindle to bend. An adjustment window cover 21 is provided on the side plate of the housing 14.

[0017] In this utility model, a heavy-duty rotating platform is formed by the cooperation of a drive assembly, a housing 14, a cam spindle 3, a variable-pitch cylindrical cam 8, and a roller 20. The drive assembly drives the variable-pitch cylindrical cam 8 and the roller 20 to rotate, which in turn drives the disc 18 to rotate. The variable-pitch cylindrical cam 8 and the roller 20 can be preloaded to make the transmission zero backlash. The variable-pitch cylindrical cam has rolling friction and self-locking ability, which can extend the service life and withstand large inertia impacts.

[0018] 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 heavy-duty rotating platform suitable for both vertical and horizontal use, comprising a housing (14), characterized in that, A cam spindle (3) is rotatably mounted inside the housing (14) via a first bearing assembly and a second bearing assembly. The cam spindle (3) is driven by a drive assembly. A variable pitch cylindrical cam (8) is sleeved on the cam spindle (3). A disc (18) is rotatably connected to the housing (14) via a third bearing assembly. An oil seal seat (15) is provided on the housing (14). An oil seal outer ring (17) is provided on the disc (18). A TC oil seal (16) is provided between the oil seal outer ring (17) and the oil seal seat (15). The inner side of the disc (18) is provided with a number of rollers (20). The rollers (20) are in contact with the contour of the variable pitch cylindrical cam (8). When the drive assembly drives the cam spindle (3) and the variable pitch cylindrical cam (8) to rotate, the rollers (20) drive the disc (18) to rotate.

2. The heavy-duty rotating platform for both vertical and horizontal use according to claim 1, characterized in that, The first bearing assembly includes a first tapered roller bearing (7) and an input bearing sleeve (6). The outer ring of the first tapered roller bearing (7) is installed inside the input bearing sleeve (6), and the inner ring of the first tapered roller bearing (7) is installed on the cam spindle (3).

3. A heavy-duty rotating platform for both vertical and horizontal use according to claim 2, characterized in that, The first bearing assembly also includes an input force adjusting nut (5) which is screwed into the input force bearing sleeve (6) through its external thread and abuts against the outer ring end face of the first tapered roller bearing (7) for adjusting the bearing preload.

4. A heavy-duty rotating platform for both vertical and horizontal use according to claim 1, characterized in that, The second bearing assembly includes a bearing housing (12), which is fixed to the housing (14) by fasteners and is used to support the other end of the cam spindle (3). A second tapered roller bearing (10) is provided inside the bearing housing (12).

5. A heavy-duty rotating platform for both vertical and horizontal use according to claim 2, characterized in that, The drive assembly includes a speed reducer (2) and a motor (1). The motor (1) is fixedly connected to the input end of the speed reducer (2), and the output end of the speed reducer (2) is driven to the cam spindle (3).

6. A heavy-duty rotating platform for both vertical and horizontal use according to claim 5, characterized in that, The reducer (2) is fixed on the input bearing sleeve (6), and the input bearing sleeve (6) is fixedly connected to the housing (14) by fasteners.

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