Large rotary table structure

Abstract

The utility model relates to a large rotary table structure which comprises a mounting base, a through hole is formed in the center of the mounting base in a penetrating mode, a ball bearing is embedded in the through hole, a rotating base is concentrically connected to an inner ring of the ball bearing, the top of the rotating base penetrates out of the top face of the mounting base, a rotary disc is concentrically connected to the top of the rotating base, and an arc-shaped sliding rail is arranged on the top face of the mounting base. The center of the arc-shaped sliding rail and the center of the rotating disc are located on the same straight line, a plurality of sliding blocks are evenly distributed on the arc-shaped sliding rail, the sliding blocks are slidably connected with the arc-shaped sliding rail, the sliding blocks are connected with the edge of the bottom face of the rotating disc, an outer gear ring is concentrically fixed to the rotating seat, a motor frame is fixed to the mounting seat, and a motor assembly is fixed to the motor frame. The driving end of the motor assembly is connected with a roller wheel, a roller on the roller wheel is meshed with the outer gear ring, and the rotary table has the advantages of being high in precision, stability, cost performance and flexibility.

Description

Technical Field

[0001] This application relates to the technical field of automated assembly and assembly, and more specifically, to a large turntable structure. Background Technology

[0002] In the field of automated assembly, rotary tables are common equipment used for multi-angle machining and positioning of workpieces. Currently, there are two main rotary table technologies: cam dividers and DD motors. However, both of these solutions have significant drawbacks and limitations when applied to large rotary tables with a diameter of 1 meter or more.

[0003] A cam divider is a mechanical indexing device that uses the meshing of cams and rollers to achieve indexing and positioning of the turntable. However, the indexing angle and cycle time of a cam divider are fixed, making it difficult to adapt to changing processing requirements and resulting in poor flexibility. A DD motor is a direct drive technology that directly drives the turntable to rotate without intermediate transmission devices. For large turntables with a diameter of 1 meter or more, DD motors require high power, significantly increasing their cost and making them unsuitable for mass production. Furthermore, DD motors have limited load-bearing capacity, making it difficult to meet the high load requirements of large turntables.

[0004] In summary, existing cam divider and DD motor technologies suffer from poor flexibility, limited load-bearing capacity, high cost, and complex maintenance when applied to large turntables with diameters exceeding 1 meter. These issues restrict the widespread application of large turntables in automated assembly and processing. Therefore, a new technological solution is urgently needed to address these problems and achieve high precision, high stability, high cost-effectiveness, and high flexibility for large turntables. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a large turntable structure with advantages of high precision, high stability, high cost-effectiveness, and high flexibility.

[0006] A large turntable structure includes a mounting base with a through hole at its center. A ball bearing is embedded in the through hole, and a rotating seat is concentrically connected to the inner ring of the ball bearing. The top of the rotating seat extends through the top surface of the mounting base, and a turntable is concentrically connected to the top of the rotating seat. An arc-shaped slide rail is provided on the top surface of the mounting base, with the center of the arc-shaped slide rail and the center of the turntable on the same straight line. A plurality of sliders are evenly arranged on the arc-shaped slide rail, and all of the sliders are slidably connected to the arc-shaped slide rail and connected to the bottom edge of the turntable. An external toothed ring is concentrically fixed on the rotating seat. A motor frame is fixed on the mounting base, and a motor assembly is fixed on the motor frame. A roller wheel is connected to the drive end of the motor assembly, and the rollers on the roller wheel mesh with the external toothed ring.

[0007] Preferably, the turntable, the rotating seat, and the slider are all fixedly connected by bolts.

[0008] Preferably, the external toothed ring is fixed to the rotating seat by bolts.

[0009] Preferably, the motor assembly includes a motor body and a reducer disposed on the drive shaft of the motor body.

[0010] The beneficial technical effects of this application are as follows: The circular arc-shaped slide rail and its sliding slider are connected to the edge of the turntable, providing support for the turntable edge. The turntable's center is supported by a rotating seat, giving it high load-bearing capacity. A turntable with high load-bearing capacity is more stable during rotation and less prone to being crushed or deformed by the weight of the load, ensuring precise horizontal positioning of the load. A motor assembly drives the rollers to rotate, which in turn drives the external gear ring meshing with the rollers. The rotation of the external gear ring drives the rotating seat and turntable to rotate. The transmission method of the rollers meshing with the external gear ring has the advantage of high transmission precision. Furthermore, the motor drive facilitates control of the rotation direction and stroke, allowing for flexible adjustment of the turntable's rotation direction and stroke. The rollers mesh with the external gear ring through rolling, resulting in low friction, which improves transmission efficiency and reduces noise. Attached Figure Description

[0011] Figure 1 This is an exploded view of a large turntable structure according to this embodiment.

[0012] Reference numerals in the attached drawings: 1. Mounting base; 2. Through hole; 3. Ball bearing; 4. Rotating seat; 5. Turntable; 6. Arc-shaped slide rail; 7. Slider; 8. External gear ring; 9. Motor frame; 10. Motor assembly; 11. Roller wheel. Detailed Implementation

[0013] The technical solutions of 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] Reference Figure 1A large turntable structure includes a mounting base 1 with a through hole 2 at its center. A ball bearing 3 (not shown in the figure) is embedded in the through hole 2. A rotating seat 4 is concentrically connected to the inner ring of the ball bearing 3. The top of the rotating seat 4 extends out of the top of the mounting base 1, and a turntable 5 is concentrically connected to the top of the rotating seat 4. An arc-shaped slide rail 6 is provided on the top surface of the mounting base 1. The center of the arc-shaped slide rail 6 is on the same straight line as the center of the turntable 5. Several sliders 7 are evenly arranged on the arc-shaped slide rail 6, and all sliders 7 are slidably connected to the arc-shaped slide rail 6 and connected to the bottom edge of the turntable 5. The arc-shaped slide rail 6 and the sliders 7 support the edge of the turntable 5, giving the edge of the turntable 5 good load-bearing capacity. The rotating seat 4 supports the middle of the turntable 5, making the overall load-bearing capacity of the turntable 5 high. The turntable 5 is not easily crushed or eccentric, making the turntable 5 rotate stably and the load can be accurately positioned in a horizontal position.

[0015] Reference Figure 1 An external gear ring 8 is fixed to the bottom of the rotating seat 4 by bolts. The center of the external gear ring 8 is on the same straight line as the center of the rotating seat 4. A motor frame 9 is fixed to the bottom of the mounting base 1. A motor assembly 10 is fixed on the motor frame 9. The motor assembly 10 includes a motor body and a reducer set on the drive shaft of the motor body. A roller wheel 11 is fixed to the output end of the reducer. The roller on the roller wheel 11 meshes with the external gear ring 8. The reducer is a worm gear reducer. The worm gear reducer is driven by the motor body to drive the roller wheel 11 to rotate. The rotation of the roller wheel 11 drives the external gear ring 8 to rotate, thereby enabling the rotating seat 4 to drive the turntable 5 to rotate. The specific structure of the roller 11 and its connection with the external gear ring 8 and the motor are existing technologies and will not be elaborated in detail in this embodiment. In the above structure, the transmission method of the roller 11 meshing with the external gear ring 8 has the advantage of high transmission accuracy. Moreover, the motor drive facilitates the control of the rotation direction and rotation stroke, so that the rotation direction and rotation stroke of the turntable 5 can be flexibly adjusted. Furthermore, the roller 11 meshes with the external gear ring 8 through rollers, and the rollers are rolled, which reduces friction, which is beneficial to improving transmission efficiency and reducing noise.

[0016] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large turntable structure, characterized in that: The device includes a mounting base with a through hole at its center. A ball bearing is embedded in the through hole, and a rotating seat is concentrically connected to the inner ring of the ball bearing. The top of the rotating seat extends through the top surface of the mounting base, and a turntable is concentrically connected to the top of the rotating seat. An arc-shaped slide rail is provided on the top surface of the mounting base, with the center of the arc-shaped slide rail and the center of the turntable on the same straight line. Several sliders are evenly arranged on the arc-shaped slide rail, and all of the sliders are slidably connected to the arc-shaped slide rail and connected to the bottom edge of the turntable. An external toothed ring is concentrically fixed on the rotating seat. A motor frame is fixed on the mounting base, and a motor assembly is fixed on the motor frame. A roller wheel is connected to the drive end of the motor assembly, and the rollers on the roller wheel mesh with the external toothed ring.

2. The large turntable structure according to claim 1, characterized in that: The turntable and the rotating seat are fixed together by bolts.

3. The large turntable structure according to claim 1, characterized in that: The external toothed ring is fixed to the rotating seat by bolts.

4. A large turntable structure according to claim 1, characterized in that: The motor assembly includes a motor body and a speed reducer mounted on the drive shaft of the motor body.

Images