Rotary improvement structure of ultrathin rotary table

Abstract

The utility model discloses a rotation improvement structure of an ultrathin turntable, which comprises a rail plate, the upper surface of the rail plate is provided with pin shafts, the pin shafts are uniformly distributed on the surface of the rail plate in an arc shape, the upper surface of the rail plate is provided with a framework frame, the framework frame is in clearance fit with the rail plate, one side of a speed reducer is fixedly connected with a servo motor, and the other side of the speed reducer is fixedly connected with a motor. The other side of the speed reducer is fixedly connected with a gear, and the tooth wall of the gear is meshed with the side wall of the pin shaft. The gears adopt a double-gear anti-backlash method, an upper gear and a lower gear are staggered by a certain angle, the left tooth surface and the right tooth surface of each gear are in contact with a pin shaft, the backlash between the gears and the pin shaft is reduced, the rotating stability is improved, a servo motor with good synchronism is used, and it can be guaranteed that several motors have the same rotating speed; due to the synchronism of a common three-phase asynchronous motor, the problem of asynchronous driving is solved, the situation of interference of each part of the motor is prevented, and abnormal heating of the motor after a long time is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field, and specifically to an improved structure for the rotation of an ultra-thin turntable. Background Art

[0002] The ultra-thin pin-tooth turntable is a turntable used for rotation. Its greatest features are compact structure, good stiffness, high precision, high power, and convenient operation. It can meet most rotation requirements and has a high indexing accuracy. The ultra-thin pin-tooth turntable is liked by some customers due to its low equipment layer and ability to achieve precise angle control. However, due to the large clearance between the pin teeth and the certain deviation in the output speed of the three-phase asynchronous motor used as the driving device, there is a certain interference when several reduction motors work together, resulting in abnormal heating of the reduction motors after a long rotation time. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an improved structure for the rotation of an ultra-thin turntable to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: An improved structure for the rotation of an ultra-thin turntable, including a rail plate. A pin shaft is installed on the upper surface of the rail plate, and the pin shafts are evenly distributed in an arc on the surface of the rail plate. A frame is arranged on the upper surface of the rail plate, and the frame is in clearance fit with the rail plate. A reduction motor is fixedly connected to the lower surface of the frame. A servo motor is fixedly connected to one side of the reduction motor, and a gear is fixedly connected to the other side of the reduction motor. The tooth wall of the gear meshes with the side wall of the pin shaft.

[0005] Preferably, a support wheel is fixedly connected to the lower surface of the frame, and the lower surface of the support wheel is in contact with the upper surface of the rail plate.

[0006] Preferably, the number of the gears is two, and the two gears are symmetrically arranged up and down.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: The double-gear backlash elimination method is adopted for the gears, so that the upper and lower gears are staggered by a certain angle, and both the left and right tooth surfaces of the gears are in contact with the pin shaft, reducing the clearance between the gear and the pin shaft and improving the smoothness of rotation. Moreover, a servo motor with better synchronism is used, which can ensure that several motors have the same speed. The synchronism is better than that of a common three-phase asynchronous motor, solving the problem of asynchronous driving and preventing interference between the motors of each part, and avoiding abnormal heating of the motors after a long time. Brief Description of the Drawings

[0008] Figure 1 is a schematic structural diagram of the utility model;

[0009] Figure 2 isFigure 1 Top view of the structure of the middle rail plate;

[0010] In the figure: 1, rail plate; 2, support wheel; 3, pin shaft; 4, gear; 5, reducer; 6, servo motor; 7, structure frame. Specific implementation manner

[0011] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0012] Please refer to Figure 1-2 , the present invention provides a rotation improvement structure for an ultra-thin turntable, including a rail plate 1. A pin shaft 3 is installed on the upper surface of the rail plate 1, and the pin shafts 3 are evenly distributed in an arc on the surface of the rail plate 1. A structure frame 7 is provided on the upper surface of the rail plate 1, and the structure frame 7 is in clearance fit with the rail plate 1. A reducer 5 is fixedly connected to the lower surface of the structure frame 7. A servo motor 6 is fixedly connected to one side of the reducer 5. A gear 4 is fixedly connected to the other side of the reducer 5. The tooth wall of the gear 4 meshes with the side wall of the pin shaft 3.

[0013] A support wheel 2 is fixedly connected to the lower surface of the structure frame 7, and the lower surface of the support wheel 2 is in contact with the upper surface of the rail plate 1.

[0014] The number of gears 4 is two, and the two gears 4 are symmetrically arranged up and down.

[0015] Working principle: A single rail plate 1 is pre-fixed on the ground. The rail plates 1 are distributed in a circle to form a complete circle. At the same time, pin shafts 3 are installed on the rail plate 1, and the pin shafts 3 are also distributed in a circle on the surface of the rail plate 1. At the same time, the pin shafts 3 and the gears 4 are meshed. The reducer 5 is fixed inside the structure frame 7, and a servo motor 6 is connected to the tail. A gear 4 is installed on the other side of the reducer 5. The gear 4 adopts the method of double-gear backlash elimination, so that the upper and lower gears 4 are staggered by a certain angle, so that the left and right tooth surfaces of the gear 4 are in contact with the pin shaft 3. At the same time, the structure frame 7 is a fan-shaped structure that can be assembled into a ring. The servo motor 6 drives the gear 4, so that the structure frame 7 rotates around the rail plate 1. And a support wheel 2 is arranged at the bottom of the structure frame 7 near the corners. The support wheel 2 can be in contact with the surface of the rail plate 1 and move together during rotation. The gear 4 adopts a backlash-eliminating design to reduce the gap between the gear 4 and the pin shaft 3, improve the smoothness of rotation, and use a servo motor 6 with better synchronization, which can ensure that several motors have the same rotation speed, and the synchronization is better than that of ordinary three-phase asynchronous motors, so as to solve the problem of asynchronous driving.

[0016] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An improved structure for the rotation of an ultra-thin turntable, characterized in that: It includes a track slab (1), on the upper surface of which a pin shaft (3) is installed, and the pin shafts (3) are evenly distributed in an arc on the surface of the track slab (1). An architecture frame (7) is arranged on the upper surface of the track slab (1), and the architecture frame (7) is in clearance fit with the track slab (1). A speed reducer (5) is fixedly connected to the lower surface of the architecture frame (7), a servo motor (6) is fixedly connected to one side of the speed reducer (5), a gear (4) is fixedly connected to the other side of the speed reducer (5), and the tooth wall of the gear (4) meshes with the side wall of the pin shaft (3).

2. The improved structure for the rotation of an ultra-thin turntable according to claim 1, wherein: A support wheel (2) is fixedly connected to the lower surface of the architecture frame (7), and the lower surface of the support wheel (2) is in contact with the upper surface of the track slab (1).

3. The rotational improvement structure of an ultra-thin turntable according to claim 1, wherein: The number of the gears (4) is two, and the two gears (4) are symmetrically arranged up and down.

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