CN109357111B - A single-axis precision test turntable - Google Patents

Abstract

The invention discloses a single-axis precision test turntable, which includes a main shaft, a conductive slip ring, an encoder, a support seat and a motor for driving the support seat to rotate around the main shaft; the motor includes a motor rotor and a motor stator sleeved in the motor rotor. There is a shaft seat extending downward from the shaft, and the motor stator is fixedly sleeved on the shaft seat; the conductive slip ring includes a slip ring rotor and a slip ring stator, the slip ring rotor is fixedly sleeved on the motor rotor, and the slip ring stator is fixedly connected to the motor stator; the encoder It includes an encoder rotor and an encoder stator, the encoder stator is fixedly sleeved on the main shaft, and the encoder rotor is fixedly connected to the motor rotor. The invention provides a single-axis precision test turntable. The single-axis precision test turntable not only meets the requirements of high test accuracy and wide application range, but also has a simple structure, convenient maintenance and replacement, and has high practical application value.

Description

A single-axis precision test turntable

technical field

The invention belongs to the technical field of turntables, and in particular relates to a single-axis precision test turntable.

Background technique

The photoelectric tracking system is a system that continuously tracks and measures the parameters of the moving target trajectory. The turntable is the main component of the photoelectric tracking system. The photoelectric tracking system is often used continuously and continuously. When some parts are damaged, it is necessary to be able to repair the damaged parts. Quick replacement so that it does not affect the use, the existing turntable structure is complicated, and the maintenance and replacement of parts is troublesome, especially the conductive slip ring in the turntable, which is particularly prone to damage, and the conductive slip ring in the existing turntable is basically installed on the main shaft. The replacement process is complicated, which affects the use of the photoelectric tracking system; in addition, with the development of the photoelectric tracking system, the turntable is required to be compact in structure, small in size, strong in load capacity, easy to transfer, and easy to use on various devices.

new content

Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a single-axis precision test turntable, which not only meets the requirements of high test accuracy and wide application range, but also has a simple structure, convenient maintenance and replacement, and has a high practical application value.

In order to achieve the above purpose, the solution adopted by the present invention is: a single-axis precision test turntable, including a main shaft, a conductive slip ring, an encoder, a support base and a motor that drives the support base to rotate around the main shaft; the motor includes a motor rotor and a sleeve The motor stator in the motor rotor has a shaft seat extending downward from the main shaft, and the motor stator is fixedly sleeved on the shaft seat; the conductive slip ring includes a slip ring rotor and a slip ring stator, and the slip ring rotor is fixedly sleeved on the motor rotor. The stator is fixedly connected to the motor stator; the encoder includes an encoder rotor and an encoder stator, the encoder stator is fixedly sleeved on the main shaft, and the encoder rotor is fixedly connected to the motor rotor.

Further, the single-axis precision test turntable further includes a first bearing, the slip ring rotor is fixedly connected to the inner ring of the first bearing, and the slip ring stator is fixedly connected to the outer ring of the first bearing.

Further, the motor also includes a motor bracket, the motor stator is fixedly connected to the motor bracket, the motor bracket includes a first connection part, a second connection part and a third connection part which are fixedly connected in sequence, and the first connection part is fixedly connected to the slip ring stator , the second connecting part is fixedly connected with the shaft seat, and the third connecting part is rotatably connected with the motor rotor.

Further, the bottom of the support base protrudes inwardly with a first stepped portion, and the top of the support base protrudes outward with a second stepped portion, the first stepped portion is fixedly connected to the motor rotor, and the second stepped portion is fixedly connected to the slip ring rotor.

Further, the encoder rotor is fixedly connected to the first step, the second step is fixedly connected to a load, and the load is rotatably connected to the main shaft.

Further, a second bearing is arranged between the load and the main shaft, the second bearing is located at the end of the main shaft, the inner ring of the second bearing is fixedly connected to the main shaft, and the outer ring of the second bearing is rotatably connected to the load.

Further, the end of the main shaft is provided with a limit assembly for limiting the axial movement of the load, and the limit assembly is fixedly connected with the inner ring of the second bearing.

Further, the first bearing is a high-precision bearing.

The beneficial effects of the present invention are:

(1) In the single-axis precision test turntable of the present invention, the conductive slip ring is located at the outermost periphery of the entire equipment. When the conductive slip ring fails, it can be quickly disassembled and replaced without going through layers of disassembly to reach the slip ring, greatly reducing maintenance time , reducing the impact on the operation of the photoelectric tracking system;

(2) In the single-axis precision test turntable of the present invention, the conductive slip ring and the high-precision bearing are integrated, which greatly reduces the size of the entire device, making the test turntable small in size, easy to transfer, and applicable to various occasions.

Description of drawings

Fig. 1 is the structural representation of the uniaxial precision test turntable of the present invention;

Fig. 2 is the sectional view of motor bracket of the present invention;

Fig. 3 is a cross-sectional view of the support base of the present invention.

In the attached picture:

11-Main shaft, 12-Shaft seat, 21-Motor stator, 22-Motor rotor, 23-Motor bracket, 31-Slip ring stator, 32-Slip ring rotor, 41-Encoder stator, 42-Encoder rotor, 51- The second bearing, 61-limiting plate, 62-fastening nut, 23-motor bracket, 23a-first connecting part, 23b-second connecting part, 23c-third connecting part, 70-support seat, 71-the first One step, 72-second step, 80-load.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention are clearly and completely described below. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The present invention will be further described below in conjunction with accompanying drawing:

As shown in accompanying drawings 1 to 3: the present invention provides a single-axis precision test turntable, which is applied to a photoelectric tracking system, including a main shaft 11, a conductive slip ring, an encoder, a support seat 70 and a drive The support base 70 is a motor that rotates around the main shaft 11; the motor includes a motor rotor 22 and a motor stator 21 sleeved in the motor rotor 22, the main shaft 11 extends downward with a shaft seat 12, and the motor stator 21 is fixedly sleeved on the shaft seat 12; conductive The slip ring includes a slip ring rotor 32 and a slip ring stator 31, the slip ring rotor 32 is fixedly sleeved on the motor rotor 22, the slip ring stator 31 is fixedly connected to the motor stator 21; the encoder includes an encoder rotor 42 and an encoder stator 41, and the encoder The encoder stator 41 is fixedly sleeved on the main shaft 11 , and the encoder rotor 42 is fixedly connected to the motor rotor 22 . The slip ring rotor 32 is fixedly sleeved on the motor rotor 22, and the conductive slip ring is located at the outermost periphery of the turntable. When the conductive slip ring fails, the conductive slip ring can be quickly replaced.

In this embodiment, a load 80 is fixedly connected to the support base 70, the load 80 in this embodiment is a photoelectric tracker, the motor rotor 22 rotates to drive the support base 70 to rotate, and the photoelectric tracker fixedly connected to the support base 70 rotates to To collect signals, the slip ring rotor 32 fixedly connected to the motor rotor 22 rotates synchronously with the photoelectric tracking system, and the conductive slip ring can transmit the collected information to the processing system and transmit the feedback information to the photoelectric tracker; 22 The fixedly connected encoder rotor 42 rotates synchronously with the photoelectric tracker, and the encoder detects the rotation speed, position, acceleration, etc. of the photoelectric tracker in real time.

The single-axis precision test turntable also includes a first bearing, the slip ring rotor 32 is fixedly connected to the inner ring of the first bearing, and the slip ring stator 31 is fixedly connected to the outer ring of the first bearing. In this embodiment, the first bearing is High-precision bearings, the first bearing and the conductive slip ring are integrated, which greatly saves the structural size of the equipment and makes the turntable small in size, which is convenient for application in various photoelectric tracking systems such as vehicle, ship, and airborne.

In this embodiment, the motor also includes a motor bracket 23, and the motor stator 21 is fixedly connected to the motor bracket 23. The motor bracket 23 includes a first connecting portion 23a, a second connecting portion 23b, and a third connecting portion 23c that are sequentially fixedly connected. A connecting portion 23 a is fixedly connected to the slip ring stator 31 , a second connecting portion 23 b is fixedly connected to the shaft seat 12 , and a third connecting portion 23 c is rotatably connected to the motor rotor 22 . Through this structural arrangement of the motor bracket 23 , the rotational connection between the motor rotor 22 and the motor stator 21 , the fixed connection between the motor stator 21 and the shaft seat 12 and the fixed connection between the motor stator 21 and the slip ring stator 31 can be realized simultaneously.

In this embodiment, the bottom of the support seat 70 protrudes inwardly with a first stepped portion 71, and the top of the support seat 70 protrudes outward with a second stepped portion 72, the first stepped portion 71 is fixedly connected with the motor rotor 22, and the second step The portion 72 is fixedly connected with the slip ring rotor 32 . The fixed connection between the motor rotor 22 and the slip ring rotor 32 is realized through the functions of the first stepped portion 71 and the second stepped portion 72 .

In this embodiment, the encoder rotor 42 is fixedly connected to the first stepped portion 71 , the second stepped portion 72 is fixedly connected to a load 80 , and the load 80 is rotatably connected to the main shaft 11 . The fixed connection between the encoder rotor 42 and the motor rotor 22 is realized through the first stepped portion 71 , and the fixed connection between the load 80 and the motor rotor 22 is realized through the second stepped portion 72 .

In this embodiment, a second bearing 51 is arranged between the load 80 and the main shaft 11, the second bearing 51 is located at the end of the main shaft 11, the inner ring of the second bearing 51 is fixedly connected with the main shaft 11, and the outer ring of the second bearing 51 is connected to the main shaft 11. The load 80 is rotationally connected. Through the function of the second bearing 51 , the frictional force of the load 80 rotating around the main shaft 11 is reduced.

In this embodiment, the end of the main shaft 11 is provided with a limit assembly for limiting the axial movement of the load 80, the limit assembly includes a limit plate 61 and a fastening nut 62, the end of the main shaft 11 is provided with a screw section, and the fastening nut 62 Cooperate with the thread of the screw rod section, so that the limit plate 61 is fixedly connected with the inner ring of the second bearing 51 to realize the axial limit of the load 80 .

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them, although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (5)

1. A single-shaft precision testing rotary table is characterized in that: the device comprises a main shaft, a conductive slip ring, an encoder, a supporting seat and a motor for driving the supporting seat to rotate around the main shaft;

the motor comprises a motor rotor and a motor stator sleeved in the motor rotor, the spindle extends downwards to form a shaft seat, and the motor stator is fixedly sleeved on the shaft seat;

the conductive slip ring comprises a slip ring rotor and a slip ring stator, the slip ring rotor is fixedly sleeved on the motor rotor, and the slip ring stator is fixedly connected with the motor stator;

the encoder comprises an encoder rotor and an encoder stator, the encoder stator is fixedly sleeved on the main shaft, and the encoder rotor is fixedly connected with the motor rotor;

the motor also comprises a motor support, the motor stator is fixedly connected with the motor support, the motor support comprises a first connecting part, a second connecting part and a third connecting part which are sequentially and fixedly connected, the first connecting part is fixedly connected with the slip ring stator, the second connecting part is fixedly connected with the shaft seat, and the third connecting part is rotationally connected with the motor rotor;

the bottom of the supporting seat is internally provided with a first step part in a protruding way, the top of the supporting seat is externally provided with a second step part in a protruding way, the first step part is fixedly connected with the motor rotor, and the second step part is fixedly connected with the slip ring rotor;

the encoder rotor is fixedly connected with the first step part, the second step part is fixedly connected with a load, and the load is rotationally connected with the main shaft.

2. The single axis precision test turret of claim 1, wherein: the rotor of the slip ring is fixedly connected with the inner ring of the first bearing, and the stator of the slip ring is fixedly connected with the outer ring of the first bearing.

3. The single axis precision test turret of claim 1, wherein: a second bearing is arranged between the load and the main shaft, the second bearing is positioned at the end part of the main shaft, an inner ring of the second bearing is fixedly connected with the main shaft, and an outer ring of the second bearing is rotationally connected with the load.

4. A single axis precision test turret as claimed in claim 3 wherein: the end part of the main shaft is provided with a limiting component used for limiting the axial movement of the load, and the limiting component is fixedly connected with the inner ring of the second bearing.

5. The single axis precision test turret of claim 2, wherein: the first bearing is a high-precision bearing.