Multi-angle high-precision positioning hollow rotating platform

Abstract

The utility model belongs to the technical field of hollow rotating platforms, and discloses a multi-angle high-precision positioning hollow rotating platform which comprises a machining table, a rotating table arranged at the top of the machining table in a penetrating mode and rotationally connected with the machining table, and a rotating assembly for driving the rotating table to rotate. The number of the rotating tables is equal to the number of the rotating assemblies, and the positions of the rotating tables correspond to the positions of the rotating assemblies. The rotating assembly comprises hollow sleeves which are arranged at the top of the machining table in a penetrating mode and rotationally connected with the machining table, driven gears fixed to the bottom of the rotating table and driving gears which are fixedly arranged on the hollow sleeves in a sleeving mode and meshed with the driven gears, and a control mechanism used for driving one or more hollow sleeves to rotate is arranged on the machining table. According to the rotary table, the control mechanism is arranged to drive the single or multiple hollow sleeves to rotate or stop, the single or multiple rotary tables are controlled to rotate according to production requirements, and the phenomenon of resource waste is reduced while the production requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of hollow rotating platform technology, and in particular to a multi-angle high-precision positioning hollow rotating platform. Background Technology

[0002] The hollow rotary platform is a mechanical component that combines high efficiency, high precision, high rigidity, and high cost-effectiveness. It is widely used in various rotary motion applications. Driven by a motor, it automates angle adjustment and is suitable for industrial robots, automated production lines, CNC indexing devices, and many other fields.

[0003] Chinese utility model patent with publication number CN220279576U discloses a multi-station synchronous hollow rotary platform device, including a base assembly, a drive motor, at least two hollow rotary components mounted on the base assembly along the length direction, a pulley assembly, and multiple connecting shafts. Each hollow rotary component includes a 90-degree corner unit and a hollow rotary platform connected to the upper part of the 90-degree corner unit. The 90-degree corner unit is driven by the connecting shaft, and adjacent connecting shafts are connected by couplings. Multiple couplings and connecting shafts used to connect the 90-degree corner units form a connecting shaft assembly.

[0004] Regarding the aforementioned technologies, the inventors believe that the following drawbacks exist: When the aforementioned technologies are used, turning on the drive motor drives the connecting shaft assembly to rotate through the pulley assembly, thereby enabling at least two hollow rotating assemblies to operate synchronously. Similarly, turning off the drive motor can control at least two hollow rotating assemblies to stop synchronously. However, in actual production and processing, there may be situations where the production demand is low. Since the more load the drive motor drives, the more electricity it consumes, it is necessary to control one or more idle hollow rotating assemblies to be turned off. Obviously, the aforementioned technologies cannot meet this requirement and will increase unnecessary waste. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a multi-angle high-precision positioning hollow rotary platform.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a multi-angle high-precision positioning hollow rotary platform, including a processing table, a rotary table rotatably connected to and passing through the top of the processing table, and a rotating assembly for driving the rotary table to rotate. The processing table has a cavity inside. Multiple rotary tables are arranged in a straight line. The number of rotary tables and the number of rotating assemblies are equal and their positions correspond. The rotating assembly includes a hollow sleeve rotatably connected to and passing through the top of the processing table, a driven gear fixed to the bottom of the rotary table, and a driving gear fixedly sleeved on the hollow sleeve and meshing with the driven gear. The processing table is provided with a control mechanism for driving one or more hollow sleeves to rotate.

[0007] By adopting the above technical solution, the operator can drive one or more hollow sleeves to rotate through the control mechanism, so that the driving gear fixed to the hollow sleeve, the driven gear meshing with the driving gear, and the rotary table fixed to the driven gear can rotate. This achieves the purpose of controlling the rotation of one or more rotary tables according to actual production needs, thereby reducing resource waste while meeting production needs.

[0008] Furthermore, the control mechanism includes a transmission assembly, a lifting assembly, and a drive assembly. The transmission assembly includes an intermediate rod that passes through the bottom of the hollow sleeve and is slidably engaged with it, and a driven friction wheel fixed to the lower end of the intermediate rod. The number of hollow sleeves, the number of lifting assemblies, and the number of transmission assemblies are equal and their positions correspond one-to-one. The drive assembly includes a sleeve rod that is rotatably disposed in the cavity and is in a horizontal state, a first active friction wheel that is fixedly sleeved on the sleeve rod and engages with the driven friction wheel, and a transmission unit that drives the sleeve rod to rotate. The number of the first active friction wheel and the driven friction wheel are equal and their positions correspond one-to-one. The lifting assembly is used to control the intermediate rod to slide up and down inside the hollow sleeve.

[0009] By adopting the above technical solution, the operator drives the intermediate rod to slide downward in the hollow sleeve through the lifting component, so that the driven friction wheel fixed to the intermediate rod moves downward until the conical surface of the driven friction wheel abuts against the conical surface of the corresponding first active friction wheel. Then, the transmission unit drives the sleeve rod to rotate, so that the first active friction wheel fixed to the sleeve rod, the driven friction wheel abutting against the first active friction wheel, the intermediate rod fixed to the driven friction wheel, and the hollow sleeve slidingly engaged with the intermediate rod all rotate, thereby realizing the rotation of the rotary table.

[0010] Furthermore, the lifting assembly includes a sealing piston fixed to the top of the intermediate rod and slidably connected to the hollow sleeve, a return spring fixed between the top of the sealing piston and the inner top wall of the hollow sleeve, an air inlet pipe fixed to and connected to the top of the hollow sleeve, a connecting pipe connected to an external high-pressure inflation system, a rotary shaft seal for rotatably connecting the air inlet pipe and the connecting pipe and maintaining a seal, and an exhaust valve disposed on the hollow sleeve.

[0011] By adopting the above technical solution, during use, high-pressure gas is input into one or more connecting pipes through an external high-pressure inflation system. The high-pressure gas enters the interior of the hollow sleeve through a rotary shaft seal connected to the connecting pipe and an air inlet pipe connected to the rotary shaft seal, increasing the air pressure inside the hollow sleeve. The sealing piston drives the driven friction wheel downward through the intermediate rod. During this process, the return spring gradually stretches until the conical surface of the driven friction wheel abuts against the conical surface of the first active friction wheel, maintaining a constant pressure supply from the external high-pressure inflation system. As can be seen from the above analysis, the rotation of one or more rotary tables can be achieved. When one or more rotary tables are not needed, the exhaust valve can be opened to release the pressure. The air pressure inside the hollow sleeve decreases, and the return spring drives the sealing piston, intermediate rod, and driven friction wheel to reset, ready for the next use.

[0012] Furthermore, the transmission unit includes a drive motor fixed to the inner wall of the cavity, a drive rod fixed to the output end of the drive motor and slidingly engaged with the inside of the sleeve rod, a second active friction wheel fixedly sleeved on the sleeve rod and engaged with the driven friction wheel, and a moving component disposed in the cavity and driving the sleeve rod to move. The end of the drive rod away from the drive motor is rotatably connected to the inner wall of the cavity, and the number of the first active friction wheels is equal to the number of the driven friction wheels.

[0013] By adopting the above technical solution, the operator can control the movement of the sleeve rod by moving the component, so that the second active friction wheel and the first main friction wheel, which are fixed to the sleeve rod, move away from the drive motor until the second active friction wheel moves to the bottom of the corresponding driven friction wheel. The lifting component can be used to drive the bottom of the driven friction wheel to abut against the conical surface of the second main friction wheel. After the drive motor works, it drives the drive rod to rotate, so that the sleeve rod that is slidably engaged with the drive rod and the second main friction wheel that is fixed to the sleeve rod rotate, thereby rotating the driven friction wheel, increasing the speed of the driven friction wheel, and thus increasing the speed of the rotary table to meet the needs of workpiece processing.

[0014] Furthermore, the moving component includes a slide rail fixed to the bottom wall of the cavity, a mounting seat slidably connected to the top of the slide rail, and a cylinder fixed to the slide rail. The piston rod end of the cylinder is fixed to the mounting seat, the sleeve rod passes through the mounting seat and is rotatably connected, a slider is fixed to the inner wall of the sleeve rod, and a groove is provided on the drive rod to slide and cooperate with the slider.

[0015] By adopting the above technical solution, the piston rod end of the controlled cylinder extends and moves along the slide rail with the mounting seat, so that the sleeve connected to the mounting seat moves until the piston rod end of the cylinder reaches its maximum stroke. At this point, the second active friction wheel moves below the driven friction wheel, ensuring that the driven friction wheel can abut against the second active friction wheel after descending. During this process, the slider and the slide groove slide together, ensuring that the sleeve rotates synchronously as the drive rod rotates with the drive motor.

[0016] Furthermore, the outer diameter of the driving gear is smaller than the outer diameter of the driven gear.

[0017] By adopting the above technical solution, after the drive motor starts working, it drives the driven gear and the driving gear to rotate through a series of transmissions. Due to the limitation of the outer diameter of the driven gear and the driving gear, the driving gear has to rotate several times to drive the driven gear to rotate once. The rotary table and the driven gear rotate synchronously, which ensures the precise control of the rotation angle of the rotary table and helps to improve the processing accuracy of the parts to be processed on the rotary table.

[0018] Furthermore, the side wall of the intermediate rod is provided with a slot, and the inner side wall of the hollow sleeve is fixed with a locking block that slides in cooperation with the slot.

[0019] By adopting the above technical solution, the intermediate rod and the hollow sleeve can rotate synchronously due to the limiting effect of the slot and the block.

[0020] In summary, this utility model has the following beneficial effects: In this application, during use, high-pressure gas is input into one or more connecting pipes through an external high-pressure inflation system. The high-pressure gas enters the interior of the hollow sleeve through a rotary shaft seal connected to the connecting pipe and an air inlet pipe connected to the rotary shaft seal, increasing the air pressure inside the hollow sleeve. The sealing piston drives the driven friction wheel downward through the intermediate rod. During this process, the return spring gradually stretches until the conical surface of the driven friction wheel abuts against the conical surface of the first active friction wheel, maintaining the pressure supplied by the external high-pressure inflation system unchanged. At this time, the bottom of the sealing piston abuts against the inner bottom wall of the hollow sleeve. Then, the transmission unit drives the sleeve rod to rotate, so that the first active friction wheel fixed to the sleeve rod, the driven friction wheel abutting against the first active friction wheel, the intermediate rod fixed to the driven friction wheel, and the intermediate rod sliding against the intermediate rod... The hollow sleeves in the moving fit all rotate (due to the limiting of the slots and blocks), thereby causing the driving gear fixed to the hollow sleeve, the driven gear meshing with the driving gear, and the rotary table fixed to the driven gear to rotate (due to the limitation of the outer diameter of the driven gear and the driving gear, the driving gear rotates several times before it can drive the driven gear to rotate once; the rotary table and the driven gear rotate synchronously, ensuring precise control of the rotary table's rotation angle, which is beneficial to improving the machining accuracy of the parts to be processed on the rotary table). When one or more rotary tables are not needed, one or more exhaust valves can be opened to release pressure. The air pressure inside the hollow sleeve decreases, and the return spring drives the sealing piston, intermediate rod, and driven friction wheel to return to their original positions, achieving the purpose of controlling the rotation of one or more rotary tables according to actual production needs, thus reducing resource waste while meeting production requirements. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention used to highlight the control mechanism;

[0023] Figure 3 This is a planar schematic diagram of an embodiment of the present invention to highlight the first active friction wheel and the driven friction wheel after they are pressed together;

[0024] Figure 4 This is a plan view of an embodiment of the present invention to highlight the lifting component;

[0025] Figure 5 This is a schematic diagram illustrating the connection structure between the drive rod and the sleeve rod in an embodiment of this utility model;

[0026] Figure 6 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 7 yes Figure 4 Enlarged diagram of point B in the middle.

[0028] In the diagram: 1. Processing table; 2. Rotary table; 3. Rotating assembly; 31. Hollow sleeve; 32. Driven gear; 33. Driving gear; 4. Control mechanism; 41. Transmission assembly; 411. Intermediate rod; 412. Driven friction wheel; 42. Lifting assembly; 421. Sealing piston; 422. Return spring; 423. Air inlet pipe; 424. Connecting pipe; 425. Rotary shaft seal; 426. Exhaust valve; 43. Drive assembly; 431. Sleeve rod; 432. First driving friction wheel; 433. Transmission unit; 4331. Drive motor; 4332. Drive rod; 4333. Second driving friction wheel; 4334. Moving part; 43341. Slide rail; 43342. Mounting base; 43343. Cylinder; 5. Slider; 6. Slide groove; 7. Slot; 8. Block. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] like Figure 1-7As shown in the illustration, this application discloses a multi-angle high-precision positioning hollow rotary platform, including a processing table 1, a rotary table 2, a rotating assembly 3, and a control mechanism 4. The processing table 1 has a cavity inside. Multiple rotary tables 2 are rotatably connected to the top of the processing table 1, and are arranged in a straight line. In this embodiment, the spacing between adjacent rotary tables 2 is equal. The rotating assembly 3 drives the rotary tables 2 to rotate and includes a hollow sleeve 31, a driven gear 32, and a driving gear 33. The hollow sleeve 31 is a cylindrical structure with closed ends and a hollow interior. The hollow sleeve 31 is rotatably connected to the top of the processing table 1. The driven gear 32 is fixed to the bottom of the rotary table 2. The driving gear 33 is fixedly sleeved on the hollow sleeve 31, and the driving gear 33 meshes with the driven gear 32. The outer diameter of the driving gear 33 is smaller than the outer diameter of the driven gear 32. The control mechanism 4 is disposed on the processing table 1 to drive one or more hollow sleeves 31 to rotate. The control mechanism 4 includes a transmission component 41, a lifting component 42, and a drive component 43. The number of rotary tables 2, the number of sets of rotating components 3, the number of sets of lifting components 42, and the number of sets of transmission components 41 are equal and their positions correspond one-to-one.

[0031] The transmission assembly 41 includes an intermediate rod 411 and a driven friction wheel 412. The intermediate rod 411 is inserted through the bottom of the hollow sleeve 31 and is slidably engaged. A groove 7 is provided on the side wall of the intermediate rod 411, and a locking block 8 that is slidably engaged with the groove 7 is fixed on the inner side wall of the hollow sleeve 31. The driven friction wheel 412 is fixed to the lower end of the intermediate rod 411.

[0032] The drive assembly 43 includes a sleeve 431, a first active friction wheel 432, and a transmission unit 433. The sleeve 431 is rotatably disposed within the cavity and is in a horizontal state. The first active friction wheel 432 is fixedly sleeved on the sleeve 431. The first active friction wheel 432 cooperates with the driven friction wheel 412. The thickness and number of the first active friction wheel 432 and the driven friction wheel 412 are equal, and their positions correspond one-to-one.

[0033] The lifting assembly 42 is used to control the intermediate rod 411 to slide up and down within the hollow sleeve 31. The lifting assembly 42 includes a sealing piston 421, a return spring 422, an air inlet pipe 423, a connecting pipe 424, a rotary shaft seal 425, and an exhaust valve 426. The sealing piston 421 is fixed to the top of the intermediate rod 411 and is slidably connected to the hollow sleeve 31. The return spring 422 is fixed between the top of the sealing piston 421 and the inner top wall of the hollow sleeve 31. The air inlet pipe 423 is fixed to and connected to the top of the hollow sleeve 31. The air inlet end of the connecting pipe 424 is connected to an external high-pressure inflation system (not shown in the figure). The rotary shaft seal 425 connects the air outlet end of the connecting pipe 424 to the end of the air inlet pipe 423 away from the hollow sleeve 31. The rotary shaft seal 425 is a component commonly used in the prior art for rotating and sealing two matching pipes. Its structure and operating principle are both prior art and need not be described in detail here. In this embodiment, the external high-pressure inflation system can be a mechanical device capable of providing high-pressure airflow, such as an air compressor, and the exhaust valve 426 is disposed on the hollow sleeve 31. In another embodiment, the exhaust valve 426 is provided with a one-way valve to ensure that the gas provided by the external high-pressure inflation system can only enter the hollow sleeve 31 in one direction through the connecting pipe 424, the rotary shaft seal 425, and the air inlet pipe 423, so as to ensure that the gas pressure inside the hollow sleeve 31 remains constant.In use, high-pressure gas is supplied to one or more connecting pipes 424 through an external high-pressure inflation system. The high-pressure gas enters the interior of the hollow sleeve 31 through the rotary shaft seal 425 connected to the connecting pipe 424 and the air inlet pipe 423 connected to the rotary shaft seal 425, increasing the air pressure inside the hollow sleeve 31. The sealing piston 421 drives the driven friction wheel 412 to move downward through the intermediate rod 411. During this process, the return spring 422 is gradually stretched until the conical surface of the driven friction wheel 412 abuts against the conical surface of the first active friction wheel 432, maintaining the pressure supplied by the external high-pressure inflation system unchanged. At this time, the bottom of the sealing piston 421 is just abutted against the inner bottom wall of the hollow sleeve 31. Then, the transmission unit 433 drives the sleeve rod 431 to rotate, so that the first active friction wheel 432 fixed to the sleeve rod 431, the driven friction wheel 412 abutting against the first active friction wheel 432, the intermediate rod 411 fixed to the driven friction wheel 412, and the intermediate rod 411 sliding against the intermediate rod 411 are all affected. The hollow sleeves 31 all rotate (limited by the slots 7 and the blocks 8), thereby causing the drive gear 33 fixed to the hollow sleeve 31, the driven gear 32 meshing with the drive gear 33, and the rotary table 2 fixed to the driven gear 32 to rotate (due to the limitation of the outer diameter of the driven gear 32 and the drive gear 33, the drive gear 33 rotates several times before it can drive the driven gear 32 to rotate once. The rotary table 2 rotates synchronously with the driven gear 32, ensuring precise control of the rotation angle of the rotary table 2, which is beneficial to improving the machining accuracy of the parts to be processed on the rotary table 2). When it is not necessary to use one or more rotary tables 2, one or more exhaust valves 426 can be opened to release pressure. The air pressure in the hollow sleeve 31 decreases, and the return spring 422 drives the sealing piston 421, the intermediate rod 411, and the driven friction wheel 412 to return to their original positions. This achieves the purpose of controlling the rotation of one or more rotary tables 2 according to actual production needs, reducing resource waste while meeting production needs.

[0034] The transmission unit 433 includes a drive motor 4331, a drive rod 4332, a second active friction wheel 4333, and a moving component 4334. The drive motor 4331 is fixed to the inner wall of the cavity. One end of the drive rod 4332 is fixed to the output end of the drive motor 4331, and the end of the drive rod 4332 away from the drive motor 4331 is rotatably connected to the inner wall of the cavity. The drive rod 4332 slides in conjunction with the sleeve rod 431. Specifically, a slider 5 is fixed on the inner wall of the sleeve rod 431, and a groove 6 is provided on the drive rod 4332 to slide in conjunction with the slider 5. The second active friction wheel 4333 is fixedly sleeved on the sleeve rod 431 and cooperates with the driven friction wheel 412. The number of second active friction wheels 4333 is equal to the number of driven friction wheels 412, and the thickness of the second active friction wheel 4333 is greater than the thickness of the first active friction wheel 432.

[0035] A movable component 4334 is disposed within the cavity and drives the sleeve rod 431 to move. The movable component 4334 includes a slide rail 43341, a mounting base 43342, and a cylinder 43343. The slide rail 43341 is fixed to the bottom wall within the cavity. The mounting base 43342 is slidably connected to the top of the slide rail 43341. The sleeve rod 431 passes through the mounting base 43342 and is rotatably connected. The cylinder 43343 is fixed to the slide rail 43341, and the end of the piston rod of the cylinder 43343 is fixed to the mounting base 43342. The operator controls the piston rod end of cylinder 43343 to extend and move the mounting base 43342 along slide rail 43341, so that the sleeve rod 431 connected to the mounting base 43342 moves until the piston rod end of cylinder 43343 moves to its maximum stroke. At this point, the second active friction wheel 4333 moves below the driven friction wheel 412, ensuring that the driven friction wheel 412 can be pressed against the second active friction wheel 4333 after it descends. With the sliding engagement of slider 5 and slide groove 6, the drive motor 4331 drives the drive rod 4332 to rotate, so that the sleeve rod 431 slidingly engaged with the drive rod 4332 and the second main friction wheel fixed to the sleeve rod 431 rotate, thereby rotating the driven friction wheel 412 and increasing the speed of the driven friction wheel 412, which in turn increases the speed of the rotary table 2 to meet the needs of workpiece processing.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A multi-angle high-precision positioning hollow rotary platform, comprising a processing table (1), a rotary table (2) rotatably connected to and passing through the top of the processing table (1), and a rotating assembly (3) for driving the rotary table (2) to rotate, wherein the processing table (1) has a cavity, and multiple rotary tables (2) are arranged in a straight line, the number of rotary tables (2) and the number of rotating assemblies (3) are equal and their positions correspond, characterized in that: The rotating assembly (3) includes a hollow sleeve (31) that passes through and is rotatably connected to the top of the processing table (1), a driven gear (32) fixed to the bottom of the rotary table (2), and a driving gear (33) that is fixedly sleeved on the hollow sleeve (31) and meshes with the driven gear (32). The processing table (1) is provided with a control mechanism (4) for driving one or more hollow sleeves (31) to rotate.

2. The multi-angle high-precision positioning hollow rotary platform according to claim 1, characterized in that: The control mechanism (4) includes a transmission assembly (41), a lifting assembly (42), and a drive assembly (43). The transmission assembly (41) includes an intermediate rod (411) that passes through the bottom of the hollow sleeve (31) and slides in cooperation with it, and a driven friction wheel (412) fixed to the lower end of the intermediate rod (411). The number of hollow sleeves (31), the number of lifting assemblies (42), and the number of transmission assemblies (41) are equal and their positions correspond one-to-one. The drive assembly (43) The system includes a sleeve rod (431) that is rotatably mounted in the cavity and is in a horizontal position, a first active friction wheel (432) that is fixedly mounted on the sleeve rod (431) and cooperates with the driven friction wheel (412), and a transmission unit (433) that drives the sleeve rod (431) to rotate. The number of the first active friction wheel (432) and the driven friction wheel (412) are equal and their positions correspond one-to-one. The lifting assembly (42) is used to control the intermediate rod (411) to slide up and down in the hollow sleeve (31).

3. The multi-angle high-precision positioning hollow rotary platform according to claim 2, characterized in that: The lifting assembly (42) includes a sealing piston (421) fixed to the top of the intermediate rod (411) and slidably connected to the hollow sleeve (31), a return spring (422) fixed between the top of the sealing piston (421) and the inner top wall of the hollow sleeve (31), an air inlet pipe (423) fixed to and connected to the top of the hollow sleeve (31), a connecting pipe (424) connected to an external high-pressure inflation system, a rotary shaft seal (425) for rotatably connecting the air inlet pipe (423) and the connecting pipe (424) and maintaining a seal, and an exhaust valve (426) provided on the hollow sleeve (31).

4. The multi-angle high-precision positioning hollow rotary platform according to claim 2, characterized in that: The transmission unit (433) includes a drive motor (4331) fixed to the inner wall of the cavity, a drive rod (4332) fixed to the output end of the drive motor (4331) and slidingly engaged with the sleeve (431), a second active friction wheel (4333) fixedly sleeved on the sleeve (431) and engaged with the driven friction wheel (412), and a moving component (4334) disposed in the cavity and driving the sleeve (431) to move. The end of the drive rod (4332) away from the drive motor (4331) is rotatably connected to the inner wall of the cavity. The number of the first active friction wheels (432) is equal to the number of the driven friction wheels (412). The thickness of the second active friction wheel (4333) is greater than the thickness of the first active friction wheel (432).

5. A multi-angle high-precision positioning hollow rotary platform according to claim 4, characterized in that: The moving component (4334) includes a slide rail (43341) fixed to the bottom wall of the cavity, a mounting seat (43342) slidably connected to the top of the slide rail (43341), and a cylinder (43343) fixed to the slide rail (43341). The piston rod end of the cylinder (43343) is fixed to the mounting seat (43342). The sleeve rod (431) passes through the mounting seat (43342) and is rotatably connected. A slider (5) is fixed to the inner wall of the sleeve rod (431). A groove (6) is provided on the drive rod (4332) that slides with the slider (5).

6. The multi-angle high-precision positioning hollow rotary platform according to claim 1, characterized in that: The outer diameter of the driving gear (33) is smaller than the outer diameter of the driven gear (32).

7. A multi-angle high-precision positioning hollow rotary platform according to claim 2, characterized in that: The middle rod (411) has a slot (7) on its side wall, and the hollow sleeve (31) has a locking block (8) that slides with the slot (7) on its inner side wall.

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