Servo motor rotation position detection device

Abstract

The utility model discloses a servo motor rotation position detection device which comprises a base, a servo motor body and a detection device, the servo motor body and the detection device are installed on the upper end face of the base, the detection device is located on one side of the output end of the servo motor body, and the detection device comprises a shell and a first transmission shaft. The shell is installed on the upper end face of the base, a first transmission shaft transversely penetrates through the center of the shell, a measuring plate is arranged on the outer diameter surface of the first transmission shaft, and a distance sensor is arranged on the inner wall of the shell. According to the servo motor rotation position detection device, the rotation position of a servo motor body is detected through the detection device, the rotation position of a first transmission shaft is accurately measured through a gradual change measuring plate, the height of the measuring plate is measured through eight sets of distance sensors, and then a measurement signal is transmitted to a microcomputer; and the rotation position of the first transmission shaft is accurately judged.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a servo motor rotation position detection device. Background Art

[0002] A servo motor is a motor used to control the operation of mechanical components. It has high-precision displacement control capabilities, which can achieve accurate positioning control. Detecting the rotation position of a servo motor plays an important role in the industrial production process. Detecting the rotation position of a servo motor is of great significance for achieving precise control of motion, detecting errors, optimizing performance, and achieving automation.

[0003] For example, application number CN202223449965.8 discloses a sensor device for detecting the rotational position of a motor's shaft and a motor using the device. The sensor magnet is fixed to the shaft by a magnet holder, is not easy to loosen or crack, and has high reliability. When the servo motor rotates, an encoder is generally used to convert the rotational position of the servo motor into a digital signal, which is then transmitted to detect the rotational position of the servo motor. First, the encoder of the existing servo motor is generally installed on one side of the rotor end, and when the existing servo motor rotates, the position of the servo motor is only detected and adjusted by the encoder. Therefore, in order to improve the rotation accuracy of the servo motor, a group of detection devices are additionally installed to detect the rotational position of the servo motor.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a servo motor rotation position detection device is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a servo motor rotation position detection device to solve the problem of detecting the rotation position of the servo motor proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a servo motor rotation position detection device, comprising a base, a servo motor body and a detection device, the servo motor body and the detection device are mounted on the upper end surface of the base, and the detection device is located on one side of the output end of the servo motor body, the detection device comprises a housing and a first transmission shaft, the housing is mounted on the upper end surface of the base, and the center of the housing is transversely penetrated by the first transmission shaft, the contact surface between the first transmission shaft and the housing is provided with a bearing, and sealing assemblies are provided on both sides of the bearing, the outer diameter surface of the first transmission shaft is provided with a measuring plate, the inner wall of the housing is provided with a distance sensor, and eight groups of distance sensors are provided, the side wall of the housing is provided with a speed measuring assembly, and the speed measuring assembly comprises a cover body and a speed sensor, the cover body is mounted on one side of the housing, and the first transmission shaft transversely penetrates the center of the cover body, the side wall of the inner cavity of the cover body is provided with a speed sensor, the outer diameter surface of the first transmission shaft inside the cover body is provided with a measuring disk, and the outer surface of the measuring disk is provided with a groove, the groove is provided with six groups, and the inner side of the groove is inlaid with an iron block.

[0007] Furthermore, the servo motor body includes a motor housing and a stator, the motor housing is installed on the upper end surface of the base, and the stator is provided on the inner wall of the motor housing, a rotor is provided at the center of the motor housing, and a second transmission shaft is provided at the center of the rotor, an encoder is provided at one end of the second transmission shaft, and a bearing is provided on the contact surface between the second transmission shaft and the motor housing, and sealing assemblies are installed on both sides of the bearing, a control panel is provided on the upper end surface of the motor housing, a controller is provided inside the control panel, and a microcomputer is provided on one side of the controller, and the controller is electrically connected to a power cord.

[0008] Furthermore, the second transmission shaft in the servo motor body is limit-connected to the first transmission shaft via a flange, and the encoder, control panel, controller, power cord, distance sensor and speed sensor are all electrically connected to the microcomputer.

[0009] Furthermore, the measuring plate is in a snail shape, and the height of the measuring plate increases clockwise. The measuring plate and the measuring disk are fixedly mounted on the outer diameter surface of the second transmission shaft. The first transmission shaft and the second transmission shaft are both limitedly connected to the inner diameter surface of the bearing, and the outer diameter surfaces of the bearings are respectively limitedly connected to the motor housing, the casing and the cover body. The first transmission shaft and the second transmission shaft are respectively connected to the motor housing, the casing and the cover body through the bearings to form a rotating structure that rotates around the center of the bearing.

[0010] Furthermore, the sealing assembly includes a Y-type sealing ring, a Gly ring, a Step seal and a sealing ring, wherein two groups of Y-type sealing rings and two groups of Step seals are provided, the two groups of Step seals are installed between the two groups of Y-type sealing rings, a Gly ring is installed between the two groups of Step seals, and the sealing assembly is located on both sides of the bearing, and the Y-type sealing ring, Gly ring, Step seal and sealing ring are specifically installed on the contact surfaces of the first transmission shaft and the second transmission shaft with the motor housing, the casing and the cover.

[0011] Furthermore, the distance sensors are evenly arranged with the center of the first transmission shaft as the origin, and the grooves are evenly arranged with the center of the measuring disk as the origin.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the servo motor rotation position detection device detects the rotation position of the servo motor body through the detection device, accurately measures the rotation position of the first transmission shaft by using the gradient measurement plate, measures the height of the measurement plate by using eight sets of distance sensors, and then transmits the measurement signal to the microcomputer, thereby accurately determining the rotation position of the first transmission shaft, and can also detect the rotation speed by using the speed sensor and the measurement disk;

[0013] In the servo motor rotation position detection device, the servo motor body utilizes the stator and rotor in the motor housing to generate magnetic field changes, thereby causing the second transmission shaft to rotate, and when the second transmission shaft rotates, an encoder is utilized to detect the rotation position and speed of the second transmission shaft in real time, and the electrical signal detected by the encoder is transmitted to the controller and microcomputer in the control panel through a wire, so as to observe and control the rotation position of the second transmission shaft in the servo motor body, and the power cord is utilized to power the entire device, and a microcomputer is utilized to support a variety of output forms, and it has broad applications in industrial robots and mobile systems with high-precision, diversified and replacement requirements in the future;

[0014] In the servo motor rotation position detection device, the flange plate limits the connection between the second transmission shaft and the first transmission shaft, wherein when the second transmission shaft in the servo motor body rotates, the second transmission shaft synchronously drives the first transmission shaft to rotate, and the first transmission shaft horizontally penetrates the shell and the cover body, and the outer diameter surface of the first transmission shaft penetrating the shell and the inner cavity of the cover body is respectively installed with a measuring plate and a measuring disk, wherein the measuring plate is specifically a spiral plate with a height gradient at the edge, and the measuring plate is fixedly installed on the outer diameter surface of the first transmission shaft, so that the distance between the measuring plate and the distance sensor can be detected by using eight groups of distance sensors, and then the rotation position of the second transmission shaft and the first transmission shaft can be measured, wherein the measuring disk is fixedly installed on the outer diameter surface of the first transmission shaft, and grooves are respectively arranged on both sides of the measuring disk, and an iron block is arranged on the inner side of the groove, so that the speed sensor can measure the moving speed of the groove. By using the above structure, the rotation position of the first transmission shaft and the second transmission shaft can be accurately measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural diagram of a servo motor rotation position detection device of the utility model;

[0016] Figure 2 This is a front view structural diagram of a servo motor body of a servo motor rotation position detection device of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the control panel of a servo motor rotation position detection device of the utility model;

[0018] Figure 4 This is a side structural diagram of a servo motor rotation position detection device of the utility model;

[0019] Figure 5 This is a front view structural diagram of a speed measuring component of a servo motor rotation position detection device of the utility model;

[0020] Figure 6 This is a schematic diagram of the side structure of a measuring disk of a servo motor rotation position detection device of the utility model;

[0021] Figure 7 The utility model is a front view structural diagram of the second transmission shaft and the bearing connection of a servo motor rotation position detection device.

[0022] In the figure: 1. base; 2. servo motor body; 201. motor housing; 202. stator; 203. rotor; 204. second transmission shaft; 205. encoder; 206. control panel; 207. controller; 208. microcomputer; 209. power cord; 3. detection device; 301. housing; 302. first transmission shaft; 303. measuring plate; 304. distance sensor; 305. speed measuring component; 306. cover; 307. speed sensor; 308. measuring disk; 309. groove; 4. flange. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 7The utility model provides a technical solution: a servo motor rotation position detection device, including a base 1, a servo motor body 2 and a detection device 3, the servo motor body 2 and the detection device 3 are installed on the upper end surface of the base 1, and the detection device 3 is located on one side of the output end of the servo motor body 2, the detection device 3 includes a shell 301 and a first transmission shaft 302, the shell 301 is installed on the upper end surface of the base 1, and the first transmission shaft 302 is horizontally penetrated at the center of the shell 301, a bearing is provided on the contact surface between the first transmission shaft 302 and the shell 301, and sealing components are provided on both sides of the bearing, a measuring plate 303 is provided on the outer diameter surface of the first transmission shaft 302, and the inner wall of the shell 301 A distance sensor 304 is provided, and the distance sensor 304 is specifically a sensor of model LD-9 or other sensors with high-precision distance measurement, and eight groups of distance sensors 304 are provided. A speed measuring component 305 is provided on the side wall of the housing 301, and the speed measuring component 305 includes a cover body 306 and a speed sensor 307. The cover body 306 is installed on one side of the housing 301, and the first transmission shaft 302 transversely passes through the center of the cover body 306. The side wall of the inner cavity of the cover body 306 is provided with a speed sensor 307, and the speed sensor 307 is specifically a sensor of model OP-12 or other sensors with high-precision speed measurement. The first transmission shaft inside the cover body 306 The outer diameter surface of 302 is provided with a measuring disk 308, and the outer surface of the measuring disk 308 is provided with grooves 309, and the grooves 309 are provided with six groups, and the inner side of the grooves 309 is inlaid with iron blocks, wherein the second transmission shaft 204 is limitedly connected with the first transmission shaft 302 due to the flange 4, wherein when the second transmission shaft 204 in the servo motor body 2 rotates, the second transmission shaft 204 synchronously drives the first transmission shaft 302 to rotate, and the first transmission shaft 302 horizontally penetrates the shell 301 and the cover body 306, and the outer diameter surface of the first transmission shaft 302 penetrating the inner cavity of the shell 301 and the cover body 306 is respectively provided with a measuring plate 303 and a measuring disk 308, wherein the measuring plate 303 is specifically a A spiral plate with a height gradient at the edge, and a measuring plate 303 is fixedly mounted on the outer diameter surface of the first transmission shaft 302, so that the distance between the measuring plate 303 and the distance sensor 304 is detected by eight sets of distance sensors 304, and the rotational positions of the second transmission shaft 204 and the first transmission shaft 302 are measured, wherein a measuring disk 308 is fixedly mounted on the outer diameter surface of the first transmission shaft 302, and grooves 309 are respectively installed on both sides of the measuring disk 308, and an iron block is arranged inside the groove 309, so that the speed sensor 307 measures the moving speed of the groove 309. Through the above structure, the rotational positions of the first transmission shaft 302 and the second transmission shaft 204 can be accurately measured;

[0025] The servo motor body 2 includes a motor housing 201 and a stator 202. The motor housing 201 is mounted on the upper end surface of the base 1, and the stator 202 is arranged on the inner wall of the motor housing 201. A rotor 203 is arranged at the center of the motor housing 201, and a second transmission shaft 204 is arranged at the center of the rotor 203. An encoder 205 is arranged at one end of the second transmission shaft 204, and a bearing is arranged at the contact surface between the second transmission shaft 204 and the motor housing 201, and sealing components are installed on both sides of the bearing. A control panel 206 is arranged on the upper end surface of the motor housing 201, a controller 207 is arranged inside the control panel 206, and a microcomputer 208 is arranged on one side of the controller 207, and the controller 207 is electrically connected to a power line 209. The second transmission shaft 204 in the servo motor body 2 is limitedly connected to the first transmission shaft 302 through a flange 4, and the encoder 205 and the control panel 2 06, the controller 207, the power line 209, the distance sensor 304 and the speed sensor 307 are all electrically connected to the microcomputer 208, wherein the servo motor body 2 causes the magnetic field change through the stator 202 and the rotor 203 in the motor housing 201, so that the second transmission shaft 204 rotates, and when the second transmission shaft 204 rotates, the encoder 205 detects the rotation position and speed of the second transmission shaft 204 in real time, and transmits the electrical signal detected by the encoder 205 to the controller 207 and the microcomputer 208 in the control panel 206 by wire, so as to observe and control the rotation position of the second transmission shaft 204 in the servo motor body 2, and the power line 209 is used to power the entire device. Through the microcomputer 208, multiple output forms can be supported, and it has broad applications in industrial robots and mobile systems with high precision, diversification and replacement requirements in the future;

[0026] The measuring plate 303 is in a volute shape, and the height of the measuring plate 303 increases clockwise. The measuring plate 303 and the measuring disc 308 are both fixedly mounted on the outer diameter surface of the second transmission shaft 204. The first transmission shaft 302 and the second transmission shaft 204 are both limitedly connected with the inner diameter surface of the bearing, and the outer diameter surface of the bearing is limitedly connected with the motor housing 201, the housing 301 and the cover 306 respectively. The first transmission shaft 302 and the second transmission shaft 204 are respectively connected with the motor housing 201, the housing 301 and the cover 306 through the bearing to form a rotating structure rotating around the center of the bearing, wherein the sealing assembly includes a Y-type seal Rings, Gly rings, Step seals and sealing rings, wherein two groups of Y-type sealing rings and Step seals are provided, the two groups of Step seals are installed between the two groups of Y-type sealing rings, a Gly ring is installed between the two groups of Step seals, and the sealing assembly is located on both sides of the bearing, and the Y-type sealing rings, Gly rings, Step seals and sealing rings are specifically installed on the contact surfaces of the first transmission shaft 302 and the second transmission shaft 204 with the motor housing 201, the shell 301 and the cover body 306, the distance sensors 304 are evenly arranged with the center of the first transmission shaft 302 as the origin, and the grooves 309 are evenly arranged with the center of the measuring disk 308 as the origin.

[0027] Working principle: When a servo motor rotation position detection device is used, the stator 202 and the rotor 203 in the motor housing 201 produce magnetic field changes, causing the second transmission shaft 204 to rotate, and when the second transmission shaft 204 rotates, the encoder 205 detects the rotation position and speed of the second transmission shaft 204 in real time, and transmits the electrical signal detected by the encoder 205 to the controller 207 and the microcomputer 208 in the control panel 206 through a wire, and the entire device is powered by the power cord 209, wherein the flange 4 limits the connection between the second transmission shaft 204 and the first transmission shaft 302, wherein when the second transmission shaft 204 in the servo motor body 2 rotates, the second transmission shaft 204 synchronously drives the first transmission shaft 302 to rotate, and the first transmission shaft 302 passes through the shell 301 and the cover 3 A measuring plate 303 and a measuring disc 308 are respectively installed on the outer diameter surface of the 06 inner cavity, and the measuring plate 303 is specifically a spiral plate with a height gradient at the edge, and the measuring plate 303 is fixedly installed on the outer diameter surface of the first transmission shaft 302, so that eight groups of distance sensors 304 can be used to detect the distance between the measuring plate 303 and the distance sensor 304, and then the rotation position of the second transmission shaft 204 and the first transmission shaft 302 can be measured, wherein the measuring disc 308 is fixedly installed on the outer diameter surface of the first transmission shaft 302, and grooves 309 are respectively arranged on both sides of the measuring disc 308, and an iron block is arranged on the inner side of the groove 309, so that the speed sensor 307 can measure the moving speed of the groove 309. By using the above structure, the rotation position of the first transmission shaft 302 and the second transmission shaft 204 can be accurately measured.

Claims

1. A servo motor rotation position detection device, comprising a base (1), a servo motor body (2) and a detection device (3), characterized in that: The servo motor body (2) and the detection device (3) are mounted on the upper end surface of the base (1), and the detection device (3) is located on one side of the output end of the servo motor body (2). The detection device (3) comprises a housing (301) and a first transmission shaft (302). The housing (301) is mounted on the upper end surface of the base (1), and the first transmission shaft (302) is transversely penetrated at the center of the housing (301). A bearing is provided on the contact surface between the first transmission shaft (302) and the housing (301), and sealing components are provided on both sides of the bearing. A measuring plate (303) is provided on the outer diameter surface of the first transmission shaft (302), and a distance sensor (304) is provided on the inner wall of the housing (301). Eight groups of sensors (304) are provided. A speed measuring assembly (305) is provided on the side wall of the housing (301), and the speed measuring assembly (305) comprises a cover body (306) and a speed sensor (307). The cover body (306) is installed on one side of the housing (301), and the first transmission shaft (302) passes through the center of the cover body (306) transversely. The speed sensor (307) is provided on the side wall of the inner cavity of the cover body (306). A measuring disc (308) is provided on the outer diameter surface of the first transmission shaft (302) inside the cover body (306), and a groove (309) is provided on the outer surface of the measuring disc (308). Six groups of the grooves (309) are provided, and iron blocks are embedded inside the grooves (309).

2. A servo motor rotation position detection device according to claim 1, characterized in that: The servo motor body (2) comprises a motor housing (201) and a stator (202); the motor housing (201) is mounted on the upper end surface of the base (1), and the stator (202) is arranged on the inner wall of the motor housing (201); a rotor (203) is arranged at the center of the motor housing (201), and a second transmission shaft (204) is arranged at the center of the rotor (203); an encoder (205) is arranged at one end of the second transmission shaft (204), and a bearing is arranged at the contact surface between the second transmission shaft (204) and the motor housing (201), and sealing components are installed on both sides of the bearing; a control panel (206) is arranged on the upper end surface of the motor housing (201), a controller (207) is arranged inside the control panel (206), and a microcomputer (208) is arranged on one side of the controller (207); and the controller (207) is electrically connected to a power line (209).

3. A servo motor rotation position detection device according to claim 2, characterized in that: The second transmission shaft (204) in the servo motor body (2) is position-limitedly connected to the first transmission shaft (302) via a flange (4), and the encoder (205), control panel (206), controller (207), power line (209), distance sensor (304) and speed sensor (307) are all electrically connected to the microcomputer (208).

4. A servo motor rotation position detection device according to claim 3, characterized in that: The measuring plate (303) is in a snail shape, and the height of the measuring plate (303) increases clockwise; the measuring plate (303) and the measuring disc (308) are both fixedly mounted on the outer diameter surface of the second transmission shaft (204); the first transmission shaft (302) and the second transmission shaft (204) are both position-limitedly connected to the inner diameter surface of the bearing, and the outer diameter surface of the bearing is respectively position-limitedly connected to the motor housing (201), the housing (301) and the cover (306); the first transmission shaft (302) and the second transmission shaft (204) respectively form a rotating structure rotating around the center of the bearing through the bearing, the motor housing (201), the housing (301) and the cover (306).

5. A servo motor rotation position detection device according to claim 4, characterized in that: The sealing assembly comprises a Y-shaped sealing ring, a Gly ring, a Step seal and a sealing ring, wherein two groups of the Y-shaped sealing ring and the Step seal are provided, the two groups of Step seals are installed between the two groups of Y-shaped sealing rings, a Gly ring is installed between the two groups of Step seals, and the sealing assembly is located on both sides of the bearing, and the Y-shaped sealing ring, the Gly ring, the Step seal and the sealing ring are specifically installed on the contact surfaces of the first transmission shaft (302) and the second transmission shaft (204) and the motor housing (201), the housing (301) and the cover (306).

6. A servo motor rotation position detection device according to claim 5, characterized in that: The distance sensors (304) are evenly arranged with the center of the first transmission shaft (302) as the origin, and the grooves (309) are evenly arranged with the center of the measuring disk (308) as the origin.

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