Super-large-diameter high-precision rotary table

Abstract

The utility model relates to the technical field of rotary tables, and discloses a super-large-diameter high-precision rotary table which comprises a fixed base, a rotary table shell is fixedly installed on the top of the fixed base, a rotary installation body is fixedly connected to the middle of the inner bottom wall of the rotary table shell, and a rotary bearing is fixedly installed at the top end of the rotary installation body. Supporting frames are fixedly connected to the left side and the right side of the inner bottom wall of the rotary table shell correspondingly, locking oil cylinders are fixedly installed at the tops of the two supporting frames correspondingly, and the output ends of the two locking oil cylinders are engaged with the left end and the right end of a rotary bearing correspondingly. In the utility model, the slewing bearing on the slewing mounting body is driven by the driving system to rotate, the circular grating monitors and feeds back information in real time, and an operator regulates and controls according to the information, so that high-precision positioning and stable rotation of the slewing table in the operation process are realized, various slewing operation tasks can be efficiently and accurately completed, and the working efficiency is improved. And the accuracy and the stability of operation are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of rotary table technology, and in particular to an ultra-large diameter high-precision rotary table. Background Technology

[0002] Rotary tables, as mechanical equipment in industrial production that can achieve circumferential rotation, are widely used in many fields such as machining, aerospace, and shipbuilding. Their main function is to provide precise rotary motion for various processing or assembly operations, ensuring that workpieces can be accurately positioned at different angles, thereby meeting the processing requirements of complex processes and improving production efficiency and product quality.

[0003] However, existing conventional rotary tables achieve high-precision positioning and stable rotation through a single motor drive and support structure. While this meets basic rotational requirements to some extent, the drive system, using a common motor and a single transmission device, cannot precisely control changes in speed and torque during power output. Furthermore, the relatively simple slewing bearing structure is unable to withstand large axial, radial, and overturning moments. This leads to a decrease in positioning accuracy and a deterioration in rotational stability after long-term operation under high-speed or heavy-load conditions. Consequently, the rotary table cannot meet the stringent requirements for positional accuracy and operational stability in ultra-large diameter, high-precision rotary operations, thus affecting the accuracy and continuity of the production process and limiting its application in high-end manufacturing. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an ultra-large diameter high-precision rotary table, which aims to improve the existing technology's inability to accurately control the changes in speed and torque during power output, and the relatively simple slewing bearing structure, which is difficult to withstand large axial forces, radial forces and overturning moments.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision rotary table with an ultra-large diameter, comprising a fixed base, a rotary table shell fixedly mounted on the top of the fixed base, a rotary mounting body fixedly connected to the middle of the inner bottom wall of the rotary table shell, a rotary bearing fixedly mounted on the top of the rotary mounting body, support frames fixedly connected to the left and right sides of the inner bottom wall of the rotary table shell, locking cylinders fixedly mounted on the top of the two support frames, the output ends of the two locking cylinders respectively engaging with the left and right ends of the rotary bearing, a circular grating fixedly mounted inside the rotary mounting body, an installation assembly provided on the top of the rotary bearing, and a drive system provided on the left and right sides of the rotary mounting body.

[0006] As a further description of the above technical solution:

[0007] The drive system includes two drive frames and two servo motors. The two drive frames are fixedly connected to the left and right sides of the slewing mount, respectively. A reducer is fixedly installed at the output end of each of the two servo motors. The output ends of the two reducers pass through the top of the two drive frames and are fixedly connected to drive gears. The outer walls of the two drive gears mesh with the left and right sides of the outer walls of the slewing bearing, respectively.

[0008] As a further description of the above technical solution:

[0009] The mounting assembly includes multiple mounting brackets, which are equidistantly mounted on the top of the slewing bearing, and anti-slip pads are fixedly connected to the top walls of the multiple mounting brackets.

[0010] As a further description of the above technical solution:

[0011] The mounting brackets are divided into three lengths: long, medium, and short, and are arranged at equal intervals in a ratio of 1:1:2.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the rotary table shell is fixedly connected with cleaning frames at equal intervals, and the outer walls of the multiple cleaning frames are fixedly connected with reinforcing ribs.

[0014] As a further description of the above technical solution:

[0015] The slewing mounting body is connected to multiple mounting frames via slewing bearings, and the slewing bearings adopt a double-row or triple-row cylindrical roller structure.

[0016] As a further description of the above technical solution:

[0017] All of the aforementioned mounting brackets have a hollow internal structure and a rectangular shape.

[0018] As a further description of the above technical solution:

[0019] All of the aforementioned sweeping frames are fixedly connected to the outer wall of the rotary table housing by screws, and all of them are detachable and replaceable.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the slewing bearing on the slewing mounting body rotates under the drive system, and the circular grating monitors and feeds back information in real time. The operator adjusts accordingly, and the locking cylinder locks precisely, realizing high-precision positioning and stable rotation of the slewing table during operation. It can efficiently and accurately complete various slewing tasks, greatly improving the accuracy and stability of the operation.

[0022] 2. In this utility model, a drive system consisting of a servo motor, a reducer, and a drive gear is supported by two drive frames that are firmly fixed on both sides of the rotary mounting body. The motor starts according to the command, and after the speed is adjusted by the reducer, the drive gear meshes with the rotary bearing to rotate. The motor speed can be precisely controlled, realizing stable and high-precision rotary motion of the rotary table, meeting the stringent requirements of industrial production for rotary accuracy and stability, and ensuring the efficient and precise execution of the production process. Attached Figure Description

[0023] Figure 1 A perspective view of an ultra-large diameter, high-precision rotary table proposed in this utility model;

[0024] Figure 2 This is a cross-sectional view of an ultra-large diameter high-precision rotary table proposed in this utility model;

[0025] Figure 3 This is a partial structural schematic diagram of an ultra-large diameter high-precision rotary table proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of a support frame for an ultra-large diameter high-precision rotary table proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of a circular grating in an ultra-large diameter high-precision rotary table proposed in this utility model;

[0028] Figure 6 This is a schematic diagram of the drive system for an ultra-large diameter, high-precision rotary table proposed in this utility model.

[0029] Legend:

[0030] 1. Fixed base; 2. Rotary table shell; 3. Rotary mounting body; 4. Rotary bearing; 5. Support frame; 6. Locking cylinder; 7. Circular grating; 8. Drive system; 801. Drive frame; 802. Servo motor; 803. Reducer; 804. Drive gear; 9. Cleaning frame; 10. Reinforcing rib; 11. Mounting frame; 12. Anti-slip pad. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-5This utility model provides an embodiment of an ultra-large diameter high-precision rotary table, including a fixed base 1, which serves as the basic support for the entire device. A rotary table shell 2 is fixedly mounted on its top, providing a stable mounting platform for the components above and ensuring the overall stability of the rotary table structure. A rotary mounting body 3 is fixedly connected to the middle of the inner bottom wall of the rotary table shell 2, used to support and fix other key components, ensuring the relative position stability of each component and facilitating the precise operation of the rotary table. A rotary bearing 4 is fixedly mounted on the top of the rotary mounting body 3, capable of withstanding large axial forces, radial forces, and overturning moments, allowing the rotary table to rotate smoothly and meet the rotation requirements under different working conditions. Support frames 5 are fixedly connected to the left and right sides of the inner bottom wall of the rotary table shell 2, providing solid support for the subsequently installed locking cylinder 6 and enhancing the stability of the entire structure. The tops of the two support frames 5 are fixedly... A locking cylinder 6 is fixedly installed, with its output end engaging with the left and right ends of the slewing bearing 4 respectively. When the slewing table needs to be precisely stopped or held in position, the slewing bearing 4 can be tightly locked by hydraulic drive, effectively ensuring the positional accuracy and stability of the slewing table and preventing accidental displacement. A circular grating 7 is fixedly installed inside the slewing mounting body 3, which can accurately measure the rotation angle and position information of the slewing table and convert it into an electrical signal to feed back to the control system, so as to accurately control and adjust the movement of the slewing table, thereby achieving high-precision rotation. The top of the slewing bearing 4 is equipped with a mounting component, which facilitates the installation of various working accessories, enabling the slewing table to adapt to diverse work tasks. Both the left and right sides of the slewing mounting body 3 are equipped with a drive system 8, which provides power for the rotation of the slewing table, driving the slewing bearing 4 and the components above it to rotate according to the instructions of the control system, ensuring that the slewing table operates efficiently and stably, and meeting various slewing operation requirements.

[0033] Reference Figure 3 and Figure 6The drive system 8 includes two drive frames 801 and two servo motors 802. The two drive frames 801 are fixedly connected to the left and right sides of the rotary mounting body 3, respectively, providing a stable and reliable mounting base for the entire drive system 8. This ensures that each drive component maintains a stable relative position during operation, effectively reducing the impact of vibration or displacement on drive accuracy. The two servo motors 802 serve as the core power source of the drive system 8, and each of their output ends is fixedly equipped with a reducer 803. The servo motors 802 can accurately output different speeds and torques according to the instructions of the control system to meet the rotation requirements of the rotary table under various working conditions. They also feature fast response speed and high control accuracy, making the start-up, stopping, and speed change processes of the rotary table smoother. The function of the reducer 803 is to reduce the high speed and low torque output of the servo motors 802. The power is converted to low-speed, high-torque power, enhancing the output torque of the drive system 8. This provides sufficient power for the drive gear 804 to drive the slewing bearing 4 to rotate, ensuring stable operation of the rotary table even under heavy loads. This effectively improves the driving capability of the rotary table. The output ends of the two reducers 803 pass through the tops of the two drive frames 801 and are fixedly connected to the drive gears 804. The drive gears 804 mesh with the left and right sides of the outer wall of the slewing bearing 4. Through precise meshing transmission between the gears, the torque output by the reducers 803 is efficiently transmitted to the slewing bearing 4, driving the slewing bearing 4 and its components to rotate stably. This gear transmission method has the advantages of precise transmission ratio and high transmission efficiency, ensuring that the rotational and positional accuracy of the rotary table meets the requirements of high-precision operation, thereby ensuring the stable and reliable operation of the entire rotary table system.

[0034] Reference Figure 1 and Figure 3The installation assembly includes multiple mounting brackets 11, which are equidistantly installed on the top of the slewing bearing 4. These brackets provide evenly distributed and stable support points for installing various equipment or workpieces, ensuring the installed items remain balanced and stable during rotation and preventing center of gravity shift due to uneven installation. Anti-slip pads 12 are fixedly connected to the top walls of each mounting bracket 11. These pads increase the friction between the mounting bracket 11 and the installed items, effectively preventing slippage or displacement during rotation, further improving installation stability and reliability, and ensuring safety during operation. The mounting brackets 11 are of varying lengths, including long and medium. The mounting brackets 11 are arranged in three lengths and heights, with equal spacing in a 1:1:2 ratio. This makes the layout of the mounting brackets 11 more reasonable, adaptable to installation requirements of different sizes and shapes, and improves the versatility and flexibility of the mounting components. This allows users to perform diverse equipment installations according to actual operating conditions. Cleaning racks 9 are fixedly connected at equal intervals to the outer wall of the rotary table housing 2. These cleaning racks 9 can clean the surrounding environment to a certain extent during the operation of the rotary table, preventing debris from accumulating around it. This reduces component wear and jamming caused by foreign objects entering the rotary table, extending its service life. Multiple cleaning racks 9 are fixedly connected to the outer wall of the rotary table. The sweeping frame 9 is reinforced with stiffeners 10, which significantly enhance its structural strength, making it less prone to deformation and damage under external impact or long-term vibration. This ensures the sweeping frame 9 can continuously and effectively perform its cleaning function, providing better environmental protection for the stable operation of the rotary table. The rotary mounting body 3 is connected to multiple mounting frames 11 via rotary bearings 4. The rotary bearings 4 adopt a double-row or triple-row cylindrical roller structure. This type of rotary bearing 4 has higher load-bearing capacity and better rotational accuracy, and can smoothly support the mounting frames 11 and their loads to perform high-precision rotational movements, meeting the stringent requirements for the stability and accuracy of the rotary table in industrial production. The interiors of all mounting brackets 11 are hollow and rectangular in shape. The hollow structure reduces the weight of the mounting brackets 11 while ensuring their basic strength, which helps to reduce the overall energy consumption and operating costs of the rotary table. The rectangular shape facilitates docking and installation with other equipment or workpieces, improving the convenience and compatibility of installation. All cleaning brackets 9 are fixed to the outer wall of the rotary table shell 2 with screws and are all detachable and replaceable. This allows users to easily and quickly disassemble and replace the cleaning brackets 9 when they are damaged or severely worn, reducing the difficulty and cost of equipment maintenance and ensuring that the cleaning brackets 9 are always in good working condition.

[0035] Working Principle: The fixed base 1 is fixed on the working plane, providing a stable bearing platform for the components above. The rotary table shell 2 is fixedly installed on top of the fixed base 1, protecting the internal components and providing a certain degree of structural integrity. The rotary mounting body 3 is located in the middle of the inner bottom wall of the rotary table shell 2. The rotary bearing 4 fixedly installed at its top can withstand large axial forces, radial forces, and overturning moments, allowing the rotary table to rotate relatively smoothly. The support frames 5 located on the left and right sides of the inner bottom wall of the rotary table shell 2 have locking cylinders 6 fixedly installed at their tops. When the rotary table needs to stop at a specific position, the output ends of the two locking cylinders 6 respectively engage with the left and right ends of the rotary bearing 4, locking the rotary bearing 4 through hydraulic force, thereby ensuring the stability of the rotary table. To ensure the positional accuracy and stability of the rotary support 4 and prevent unnecessary displacement during operation, the circular grating 7 inside the rotary mounting body 3 is used to accurately measure the rotation angle and position information of the rotary table. The circular grating 7, in conjunction with relevant detection devices, can convert the rotation of the rotary support 4 into an electrical signal and feed it back to the operator. The operator can then precisely control and adjust the movement of the rotary table based on this feedback information to achieve high-precision rotary motion. The drive system 8 provides the power source for the rotation of the rotary table and can output appropriate torque and speed according to the operator's instructions to drive the rotary support 4 and the components mounted on top of it to rotate, thereby meeting different work requirements and enabling the efficient and accurate completion of various rotary operation tasks.

[0036] Furthermore, during operation, the two drive frames 801 are fixedly connected to the left and right sides of the rotary mounting body 3, providing a support structure for the entire drive system 8. Two servo motors 802 serve as power sources, receiving command signals from the control system. When the rotary table needs to rotate, the servo motors 802 start and output corresponding speed and torque according to the command. Since the speed and torque output by the motors often cannot directly meet the drive requirements of the rotary table, a reducer 803 is fixedly installed at the output end of each servo motor 802. The function of the reducer 803 is to convert the high-speed, low-torque output of the motor into a low-speed, high-torque output, making the power more efficient. The servo motors effectively drive the slewing bearing 4 to rotate. The power, after being reduced in speed by the reducer 803, is transmitted to the drive gears 804. The outer walls of the two drive gears 804 mesh with the left and right sides of the outer wall of the slewing bearing 4, respectively. When the drive gears 804 rotate, the slewing bearing 4 is driven to rotate by the meshing transmission between the gears. By controlling the speed, direction, and torque output of the two servo motors 802, the rotation direction, speed, and angle of the slewing bearing 4 can be precisely controlled, thereby realizing the high-precision rotational motion of the rotary table. This enables it to meet the stringent requirements for high-precision rotational motion of ultra-large diameters, ensuring the accuracy and continuity of the production process.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision rotary table with an ultra-large diameter, comprising a fixed base (1), characterized in that: A rotary table shell (2) is fixedly installed on the top of the fixed base (1). A rotary mounting body (3) is fixedly connected to the middle of the inner bottom wall of the rotary table shell (2). A rotary bearing (4) is fixedly installed on the top of the rotary mounting body (3). Support frames (5) are fixedly connected to the left and right sides of the inner bottom wall of the rotary table shell (2). Locking cylinders (6) are fixedly installed on the top of the two support frames (5). The output ends of the two locking cylinders (6) are respectively engaged with the left and right ends of the rotary bearing (4). A circular grating (7) is fixedly installed inside the rotary mounting body (3). An installation component is provided on the top of the rotary bearing (4). A drive system (8) is provided on the left and right sides of the rotary mounting body (3).

2. The ultra-large diameter high-precision rotary table according to claim 1, characterized in that: The drive system (8) includes two drive frames (801) and two servo motors (802). The two drive frames (801) are fixedly connected to the left and right sides of the rotary mounting body (3). The output ends of the two servo motors (802) are fixedly equipped with reducers (803). The output ends of the two reducers (803) pass through the top of the two drive frames (801) and are fixedly connected with drive gears (804). The outer walls of the two drive gears (804) mesh with the left and right sides of the outer walls of the slewing bearing (4).

3. The ultra-large diameter high-precision rotary table according to claim 1, characterized in that: The mounting assembly includes multiple mounting brackets (11), which are equidistantly mounted on the top of the slewing bearing (4), and anti-slip pads (12) are fixedly connected to the top walls of the multiple mounting brackets (11).

4. The ultra-large diameter high-precision rotary table according to claim 3, characterized in that: The lengths of the multiple mounting brackets (11) are divided into three types: long, medium, and short, and they are arranged at equal intervals in a ratio of one to two.

5. The ultra-large diameter high-precision rotary table according to claim 1, characterized in that: The outer wall of the rotary table shell (2) is fixedly connected with cleaning frames (9) at equal intervals, and the outer walls of the multiple cleaning frames (9) are fixedly connected with reinforcing ribs (10).

6. The ultra-large diameter high-precision rotary table according to claim 1, characterized in that: The rotary mounting body (3) is connected to multiple mounting frames (11) via a rotary bearing (4), and the rotary bearing (4) adopts a double-row or triple-row cylindrical roller structure.

7. A high-precision rotary table with an ultra-large diameter according to claim 3, characterized in that: The interior of each of the mounting brackets (11) is hollow and rectangular in shape.

8. A high-precision rotary table with an ultra-large diameter according to claim 5, characterized in that: All of the cleaning racks (9) are fixedly connected to the outer wall of the rotary table housing (2) by screws, and all of them are detachable and replaceable.

Images