Bearing ring size detection device and detection method

Abstract

The invention discloses a bearing ring size detection device and detection method. The detection device comprises an air cylinder, a workbench, a sliding plate, an electric rotating table, a lifting mechanism, a gantry frame, a sliding table, a sliding table guide rail, an electric rotating table motor, a lifting mechanism guide rail, a grating ruler assembly, a measuring mechanism and a PLC. The bearing ring size detection device has the beneficial effects that the functions of three different detection devices are integrated on one bearing ring size detection device, so that equipment required by bearing ring detection is saved, the occupied space scale and the manufacturing cost required by bearing ring detection are reduced, the time required by bearing ring detection is shortened, the detection efficiency is improved, and the detection cost is reduced. The detection device is simple and reasonable in structural design, high in reliability and suitable for popularization and application.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing ring size detection, and specifically relates to a bearing ring size detection device and a detection method. Background Art

[0002] Bearings are important components of mechanical equipment, and their quality is directly related to the life, stability and safety of the entire equipment. In order to produce high-quality and high-precision bearings, in addition to ensuring reasonable and advanced processing technology, it is also necessary to ensure high-precision and efficient bearing quality testing equipment.

[0003] In the context of intelligent manufacturing, it is imperative to improve the automation level of manufacturing enterprises, improve production efficiency, and manufacture higher quality products. The three detection devices disclosed in Chinese patent application publication numbers CN208505235U, CN208567774U, and CN208567776U have relatively scattered functions. How to further integrate and improve them, thereby increasing the functions of a single detection device and improving detection efficiency, is a difficult problem facing technicians in this field. Summary of the invention

[0004] In order to solve the above problems, an object of the present invention is to provide a bearing ring size detection device and a detection method.

[0005] In order to achieve the above-mentioned object, the bearing ring size detection device provided by the present invention comprises a cylinder, a workbench, a slide plate, an electric rotating table, a lifting mechanism, a gantry frame, a slide table, a slide table guide rail, an electric rotating table motor, a lifting mechanism guide rail, a grating ruler assembly, a measuring mechanism and a PLC;

[0006] The workbench is arranged on the ground; the slide is fixed on the middle of the top surface of the workbench, and two parallel slide rails are arranged on both sides of the top surface; the slide plate is installed on the two slide rails in a sliding manner through the guide slider at the bottom; one end of the cylinder body is installed on one end of the top surface of the workbench, and the other end is installed on the middle of the same side end of the slide, and the outer end of the cylinder rod is fixed on the middle of one end surface of the slide, so that the cylinder can drive the slide plate to move on the slide rail; the electric rotary table is fixed on the top surface of the slide, and a mutually meshing worm gear mechanism is arranged inside, and an electric rotary table motor is installed on one side, and the output end of the electric rotary table motor is connected to one end of the worm through the rotary table coupling, thereby driving the electric rotary table to rotate; electric rotary table A fixture is installed on the worm gear and carries the bearing ring to be tested. The electric rotating table motor drives the electric rotating table to rotate so that the bearing ring to be tested rotates horizontally at a uniform speed; the lower end of the gantry frame is fixed to the other end of the top surface of the workbench, and a lifting mechanism guide rail arranged in the vertical direction is fixed on both sides of the inner side surface, and a lifting mechanism is fixed in the middle; the lifting mechanism includes a lifting mechanism frame, a lifting mechanism motor, a lifting mechanism connecting plate, a ball screw, a lifting mechanism coupling and an internal guide rail of the lifting mechanism; the lifting mechanism frame is installed in the middle of the inner side surface of the gantry frame; the internal guide rail of the lifting mechanism is vertically installed on one side of the inner part of the lifting mechanism frame; the ball screw is rotatably arranged on the other side of the inner part of the lifting mechanism frame; the lifting mechanism motor is installed on the lifting mechanism frame At the top of the mechanism frame, the output shaft at the lower end is connected to the upper end of the ball screw through the lifting mechanism coupling; the inner side of the lifting mechanism connecting plate is sleeved on the ball screw and at the same time slides with the internal guide rail of the lifting mechanism to achieve precise linear displacement; the grating ruler assembly is vertically installed on one side of the lifting mechanism frame; the measuring mechanism includes a displacement sensor for inner diameter measurement, two displacement sensors for outer diameter measurement, a displacement sensor for height measurement, a displacement sensor connecting plate for inner diameter measurement, a guide slider for the displacement sensor connecting plate for inner diameter measurement, a displacement sensor connecting plate for outer diameter measurement, a guide slider for the displacement sensor connecting plate for height measurement, a displacement sensor connecting plate for height measurement, a measuring mechanism guide rail, a measuring mechanism connecting plate Plate guide rail slider, outer diameter measurement displacement sensor connecting plate guide rail slider and measuring mechanism connecting plate; wherein the measuring mechanism guide rail is arranged horizontally, the middle side surface is installed on the outer end surface of the lifting mechanism connecting plate, and the bottom surfaces of both ends are respectively connected to a measuring mechanism connecting plate, and each measuring mechanism connecting plate is installed on a lifting mechanism guide rail in an up-and-down manner through the measuring mechanism connecting plate guide rail slider arranged on its inner side surface; the inner diameter measurement displacement sensor is installed at the lower end of the inner diameter measurement displacement sensor connecting plate, and the upper part of the inner diameter measurement displacement sensor connecting plate is installed in the middle of the measuring mechanism guide rail in a horizontally movable manner through the inner diameter measurement displacement sensor connecting plate guide rail slider, which is used to adjust the horizontal position of the inner diameter measurement displacement sensor;Two displacement sensors for measuring outer diameter are respectively installed at the lower part of a displacement sensor connecting plate for measuring outer diameter, and the upper parts of the two displacement sensor connecting plates for measuring outer diameter are respectively installed at the two sides of the measuring mechanism rail through the guide sliders of the displacement sensor connecting plate for measuring outer diameter in a horizontally movable manner, so as to adjust the horizontal position of the displacement sensor for measuring outer diameter; two displacement sensors for measuring height are respectively installed at the two displacement sensor connecting plates for measuring height, and the two displacement sensor connecting plates for measuring height are respectively installed at the position between the displacement sensor connecting plate for measuring inner diameter and the two displacement sensor connecting plates for measuring outer diameter in a horizontally movable manner through the guide sliders of the displacement sensor connecting plate for measuring height, so as to adjust the horizontal position of the displacement sensor for measuring height; the PLC is respectively electrically connected to the cylinder controller, the displacement sensor for measuring inner diameter, the displacement sensor for measuring outer diameter, the displacement sensor for measuring height, the lifting mechanism motor, the electric rotary table motor and the grating ruler assembly. ;

[0007] The model of the PLC is S7-1200 CPU1212C.

[0008] The lifting mechanism motor and the electric rotating platform motor are both stepping motors and are equipped with stepping motor drivers.

[0009] Magnetic switches are installed at both ends of the cylinder upper body for detecting the state of the cylinder, and the magnetic switches are electrically connected to the PLC to achieve automatic detection through the control of the PLC.

[0010] The displacement sensor for measuring the inner diameter, the displacement sensor for measuring the outer diameter and the displacement sensor for measuring the height are all capacitive displacement sensors.

[0011] The detection method using the above-mentioned bearing ring size detection device includes the following steps performed in sequence:

[0012] 1) Place the bearing ring to be tested on the electric rotating table and fix it with the fixture on the electric rotating table;

[0013] 2) Under the control of PLC, the air rod on the cylinder extends, causing the slide to move on the slide along the slide rail, thereby pushing the electric rotary table and the bearing ring to be measured to the specified measurement working position;

[0014] 3) Start the lifting mechanism motor, drive the ball screw to rotate through the lifting mechanism coupling, and then drive the lifting mechanism connecting plate to move downward, and then drive the measuring mechanism to move, so that the measuring mechanism is lowered to the horizontal plane where the small retaining ring of the bearing ring to be measured is located, and then the lifting mechanism motor stops;

[0015] 4) Start the electric rotating table motor, so that the electric rotating table drives the bearing ring to be measured to rotate one circle, and use two displacement sensors for outer diameter measurement to collect measurement data at the same time to obtain the outer diameter d1 of the small retaining ring of the bearing ring to be measured, and then the electric rotating table motor stops;

[0016] 5) Start the lifting mechanism motor again, drive the ball screw to rotate through the lifting mechanism coupling, and then drive the lifting mechanism connecting plate to continue to move downward, so that the measuring mechanism descends to the specified horizontal plane close to the small retaining ring of the bearing ring, then the lifting mechanism motor stops, and the descending height h1 of the measuring mechanism is obtained through the grating ruler assembly;

[0017] 6) Start the motor of the electric rotating table, so that the electric rotating table drives the bearing ring to be measured to rotate one circle, and use the displacement sensor for measuring the inner diameter, two displacement sensors for measuring the outer diameter and two displacement sensors for measuring the height to collect measurement data at the same time, so as to obtain the inner radius r1 of the bearing ring to be measured, the outer diameter d2 of the small retaining ring close to the bearing ring and the height h1 of the bearing ring to be measured, and then the motor of the electric rotating table stops;

[0018] 7) Start the lifting mechanism motor again, drive the ball screw to rotate through the lifting mechanism coupling, and then drive the lifting mechanism connecting plate to continue to move downward, so that the measuring mechanism is lowered to the specified horizontal plane where the large retaining ring of the bearing ring to be measured is located within the bearing ring raceway range and close to the large retaining ring of the bearing ring to be measured. Then the lifting mechanism motor stops, and the descent height h2 of the measuring mechanism is obtained through the grating ruler assembly;

[0019] 8) Start the electric rotary table motor, so that the electric rotary table drives the bearing ring to be measured to rotate one circle, and use two displacement sensors for outer diameter measurement to collect measurement data at the same time to obtain the outer diameter d3 of the large retaining ring close to the bearing ring to be measured. Then the electric rotary table motor stops, and the outer diameter taper of the raceway of the bearing ring to be measured is calculated according to the formula (d3-d2) / (h2-h1);

[0020] 9) Start the lifting mechanism motor again, drive the ball screw to rotate through the lifting mechanism coupling, and then drive the lifting mechanism connecting plate to continue to move downward, so that the measuring mechanism is lowered to the horizontal plane where the large retaining ring of the bearing ring to be measured is located, and then the lifting mechanism motor stops;

[0021] 10) Start the motor of the electric rotating table, so that the electric rotating table drives the bearing ring to be measured to rotate one circle, and use two displacement sensors for outer diameter measurement to collect measurement data at the same time to obtain the outer diameter d4 of the large retaining ring of the bearing ring to be measured, and then stop the motor of the electric rotating table;

[0022] 11) The lifting mechanism motor is reversed to drive the ball screw to rotate through the lifting mechanism coupling, thereby driving the lifting mechanism connecting plate to move up, so that the measuring mechanism moves up to the initial position; the air rod on the cylinder retracts, so that the slide plate moves back on the slide along the slide rail, thereby pulling the electric rotary table and the bearing ring to be measured back to the initial position, thereby completing the entire measurement process.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the functions of three different detection devices are integrated into one bearing ring size detection device, which saves the equipment required for bearing ring detection, reduces the floor space and manufacturing cost required for bearing ring detection, reduces the time required for bearing ring detection, improves detection efficiency, and the detection device has a simple and reasonable structural design, strong reliability, and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the bearing ring size detection device provided by the present invention;

[0025] Figure 2 A schematic diagram of the internal structure of the lifting mechanism in the bearing ring size detection device provided by the present invention;

[0026] Figure 3 A schematic diagram of the structure of the measuring mechanism in the bearing ring size detection device provided by the present invention; DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] like Figures 1 to 3 As shown, the bearing ring size detection device provided by the present invention includes a cylinder 1, a workbench 2, a slide plate 3, an electric rotating table 4, a lifting mechanism 9, a gantry frame 13, a slide table 15, a slide table guide rail 16, an electric rotating table motor 17, a lifting mechanism guide rail 27, a grating ruler assembly, a measuring mechanism and a PLC;

[0029] Among them, the workbench 2 is set on the ground; the slide 15 is fixed to the middle of the top surface of the workbench 2, and a parallel slide rail 16 is provided on both sides of the top surface; the slide plate 3 is slidably installed on the two slide rails 16 through the guide slider at the bottom; one end of the cylinder body of the cylinder 1 is installed at one end of the top surface of the workbench 2, and the other end is installed in the middle of the same side end of the slide 15, and the outer end of the gas rod of the cylinder 1 is fixed to the middle of one end surface of the slide plate 3, so that the cylinder 1 can drive the slide plate 3 to move on the slide rail 16; the electric rotary table 4 is fixed on the top surface of the slide plate 3, and a mutually meshing worm gear mechanism is provided inside, and an electric rotary table motor 17 is installed on one side, and the output end of the electric rotary table motor 17 is connected to the rotary table coupling through the rotary table coupling. It is connected to one end of the worm, thereby driving the electric rotating table 4 to rotate; a fixture is installed on the worm wheel of the electric rotating table 4 and carries the bearing ring 5 to be tested, and the electric rotating table motor 17 drives the electric rotating table 4 to rotate so that the bearing ring 5 to be tested rotates horizontally at a uniform speed; the lower end of the gantry frame 13 is fixed to the other end of the top surface of the workbench 2, and a lifting mechanism guide rail 27 set in the vertical direction is fixed on both sides of the inner side surface, and a lifting mechanism 9 is fixed in the middle; the lifting mechanism 9 includes a lifting mechanism frame, a lifting mechanism motor 10, a lifting mechanism connecting plate 11, a ball screw 18, a lifting mechanism coupling 19 and a lifting mechanism internal guide rail 20; the lifting mechanism frame is installed in the middle of the inner side surface of the gantry frame 13; the lifting mechanism internal guide rail 20 is vertically mounted on one side of the interior of the lifting mechanism frame; the ball screw 18 is rotatably arranged on the other side of the interior of the lifting mechanism frame; the lifting mechanism motor 10 is mounted on the top of the lifting mechanism frame, and the output shaft at the lower end is connected to the upper end of the ball screw 18 through the lifting mechanism coupling 19; the inner side of the lifting mechanism connecting plate 11 is sleeved on the ball screw 18 and at the same time slides with the internal guide rail 20 of the lifting mechanism to achieve precise linear displacement; the grating ruler assembly is vertically mounted on one side of the lifting mechanism frame; the measuring mechanism includes a displacement sensor 6 for inner diameter measurement, two displacement sensors 7 for outer diameter measurement, a displacement sensor 8 for height measurement, an inner diameter measurement displacement sensor connecting plate 21, an inner diameter A measuring displacement sensor connecting plate guide slider 22, an outer diameter measuring displacement sensor connecting plate 23, a height measuring displacement sensor connecting plate guide slider 24, a height measuring displacement sensor connecting plate 25, a measuring mechanism guide 26, a measuring mechanism connecting plate guide slider 31, an outer diameter measuring displacement sensor connecting plate guide slider 32 and a measuring mechanism connecting plate 33; wherein the measuring mechanism guide 26 is arranged horizontally, the middle side surface is mounted on the outer end surface of the lifting mechanism connecting plate 11, and the bottom surfaces of both ends are respectively connected to a measuring mechanism connecting plate 33, and each measuring mechanism connecting plate 33 is installed on a lifting mechanism guide 27 in an up-and-down manner through a measuring mechanism connecting plate guide slider 31 arranged on its inner side surface;The inner diameter measuring displacement sensor 6 is installed at the lower end of the inner diameter measuring displacement sensor connecting plate 21, and the upper part of the inner diameter measuring displacement sensor connecting plate 21 is installed in the middle of the measuring mechanism guide rail 26 in a horizontally movable manner through the inner diameter measuring displacement sensor connecting plate guide slider 22, which is used to adjust the horizontal position of the inner diameter measuring displacement sensor 6; the two outer diameter measuring displacement sensors 7 are respectively installed at the lower part of an outer diameter measuring displacement sensor connecting plate 23, and the upper parts of the two outer diameter measuring displacement sensor connecting plates 23 are respectively installed at the two sides of the measuring mechanism guide rail 26 in a horizontally movable manner through the outer diameter measuring displacement sensor connecting plate guide slider 32, which is used to adjust the horizontal position of the outer diameter measuring displacement sensor 7 Position; two height measurement displacement sensors 8 are respectively installed on two height measurement displacement sensor connecting plates 25, and the two height measurement displacement sensor connecting plates 25 are respectively installed on the measuring mechanism guide rail 26 in a horizontally movable manner through the height measurement displacement sensor connecting plate guide slider 24, located between the inner diameter measurement displacement sensor connecting plate 21 and the two outer diameter measurement displacement sensor connecting plates 23, for adjusting the horizontal position of the height measurement displacement sensor 8; PLC is electrically connected to the controller of the cylinder 1, the inner diameter measurement displacement sensor 6, the outer diameter measurement displacement sensor 7, the height measurement displacement sensor 8, the lifting mechanism motor 10, the electric rotary table motor 17 and the grating ruler assembly. ;

[0030] The model of the PLC is S7-1200 CPU1212C.

[0031] The lifting mechanism motor 10 and the electric rotating table motor 17 are both stepping motors and are equipped with stepping motor drivers.

[0032] Magnetic switches are installed at both ends of the cylinder body of the cylinder 1 to detect the state of the cylinder 1, and the magnetic switches are electrically connected to the PLC to achieve automatic detection through the control of the PLC.

[0033] The inner diameter measuring displacement sensor 6, the outer diameter measuring displacement sensor 7 and the height measuring displacement sensor 8 are all capacitive displacement sensors.

[0034] The detection method using the above-mentioned bearing ring size detection device includes the following steps performed in sequence:

[0035] 1) Place the bearing ring 5 to be tested on the electric rotating table 4 and fix it with a clamp on the electric rotating table 4;

[0036] 2) Under the control of PLC, the air rod on the cylinder 1 extends, so that the slide plate 3 moves on the slide table 15 along the slide table guide rail 16, thereby pushing the electric rotary table 4 and the bearing ring 5 to be measured to the designated measurement working position;

[0037] 3) Start the lifting mechanism motor 10, drive the ball screw 18 to rotate through the lifting mechanism coupling 19, and then drive the lifting mechanism connecting plate 11 to move downward, and then drive the measuring mechanism to move, so that the measuring mechanism is lowered to the horizontal plane where the small retaining ring of the bearing ring 5 to be measured is located, and then the lifting mechanism motor 10 stops;

[0038] 4) Start the electric rotating table motor 17, so that the electric rotating table 4 drives the bearing ring 5 to be measured to rotate one circle, and use two displacement sensors 7 for outer diameter measurement to collect measurement data at the same time to obtain the outer diameter d1 of the small retaining ring of the bearing ring 5 to be measured, and then the electric rotating table motor 17 stops;

[0039] 5) Start the lifting mechanism motor 10 again, drive the ball screw 18 to rotate through the lifting mechanism coupling 19, and then drive the lifting mechanism connecting plate 11 to continue to move downward, so that the measuring mechanism descends to the specified horizontal plane close to the small retaining ring of the bearing ring, and then the lifting mechanism motor 10 stops, and the descending height h1 of the measuring mechanism is obtained through the grating ruler assembly;

[0040] 6) Start the electric rotating table motor 17, so that the electric rotating table 4 drives the bearing ring 5 to be measured to rotate one circle, and use the displacement sensor 6 for inner diameter measurement, two displacement sensors 7 for outer diameter measurement and two displacement sensors 8 for height measurement to collect measurement data at the same time, so as to obtain the inner radius r1 of the bearing ring 5 to be measured, the outer diameter d2 of the small retaining ring close to the bearing ring and the height h1 of the bearing ring 5 to be measured, and then the electric rotating table motor 17 stops;

[0041] 7) Start the lifting mechanism motor 10 again, drive the ball screw 18 to rotate through the lifting mechanism coupling 19, and then drive the lifting mechanism connecting plate 11 to continue to move downward, so that the measuring mechanism is lowered to the specified horizontal plane where the large retaining ring of the bearing ring 5 to be measured is located within the bearing ring raceway range and close to the large retaining ring, then the lifting mechanism motor 10 stops, and the descent height h2 of the measuring mechanism is obtained through the grating ruler assembly;

[0042] 8) Start the electric rotating table motor 17, so that the electric rotating table 4 drives the bearing ring 5 to be measured to rotate one circle, and use two displacement sensors 7 for outer diameter measurement to collect measurement data at the same time to obtain the outer diameter d3 of the large retaining ring close to the bearing ring 5 to be measured, then stop the electric rotating table motor 17, and calculate the outer diameter taper of the raceway of the bearing ring 5 to be measured according to the formula (d3-d2) / (h2-h1);

[0043] 9) Start the lifting mechanism motor 10 again, drive the ball screw 18 to rotate through the lifting mechanism coupling 19, and then drive the lifting mechanism connecting plate 11 to continue to move downward, so that the measuring mechanism is lowered to the horizontal plane where the large retaining ring of the bearing ring 5 to be measured is located, and then the lifting mechanism motor 10 stops;

[0044] 10) Start the electric rotating table motor 17, so that the electric rotating table 4 drives the bearing ring 5 to be measured to rotate one circle, and use two displacement sensors 7 for outer diameter measurement to collect measurement data at the same time to obtain the outer diameter d4 of the large retaining ring of the bearing ring 5 to be measured, and then the electric rotating table motor 17 stops;

[0045] 11) The lifting mechanism motor 10 is reversed, and the ball screw 18 is driven to rotate through the lifting mechanism coupling 19, thereby driving the lifting mechanism connecting plate 11 to move up, so that the measuring mechanism moves up to the initial position; the air rod on the cylinder 1 retracts, so that the slide plate 3 moves back on the slide table 15 along the slide table guide rail 16, thereby pulling the electric rotating table 4 and the bearing ring 5 to be measured back to the initial position, thereby completing the entire measurement process.

Claims

1. A bearing ring size detection device, characterized in that: The bearing ring size detection device comprises a cylinder (1), a workbench (2), a slide plate (3), an electric rotating table (4), a lifting mechanism (9), a gantry frame (13), a slide table (15), a slide table guide rail (16), an electric rotating table motor (17), a lifting mechanism guide rail (27), a grating ruler assembly, a measuring mechanism and a PLC; The working table (2) is arranged on the ground; the slide table (15) is fixed on the middle of the top surface of the working table (2), and two parallel slide table rails (16) are respectively arranged on both sides of the top surface; the slide plate (3) is slidably mounted on the two slide table rails (16) through the guide sliders at the bottom thereof; one end of the cylinder body of the cylinder (1) is mounted on one end of the top surface of the working table (2), and the other end is mounted on the middle of the same end of the slide table (15); the outer end of the gas rod of the cylinder (1) is fixed on the middle of one end surface of the slide table (3), so that the cylinder (1) can drive the slide table (3) to move on the slide table rail (16); the electric rotating table (4) is fixed on the top surface of the slide table (3), and a mutually meshing worm gear mechanism is arranged inside, and one side is provided with a worm gear mechanism. An electric rotating table motor (17) is installed, and the output end of the electric rotating table motor (17) is connected to one end of the worm through a rotating table coupling, thereby driving the electric rotating table (4) to rotate; a fixture is installed on the worm wheel of the electric rotating table (4) and carries the bearing ring (5) to be tested, and the electric rotating table motor (17) drives the electric rotating table (4) to rotate so that the bearing ring (5) to be tested rotates horizontally at a uniform speed; the lower end of the gantry frame (13) is fixed to the other end of the top surface of the workbench (2), and a lifting mechanism guide rail (27) arranged in a vertical direction is respectively fixed to the two sides of the inner side surface, and a lifting mechanism (9) is fixed in the middle; the lifting mechanism (9) includes a lifting mechanism frame, a lifting mechanism motor (10), and a lifting mechanism connection The lifting mechanism comprises a plate (11), a ball screw (18), a lifting mechanism coupling (19) and an internal guide rail (20) of the lifting mechanism; the lifting mechanism frame is installed at the middle of the inner side surface of the gantry frame (13); the internal guide rail (20) of the lifting mechanism is vertically installed on one side of the inner part of the lifting mechanism frame; the ball screw (18) is rotatably arranged on the other side of the inner part of the lifting mechanism frame; the lifting mechanism motor (10) is installed at the top of the lifting mechanism frame, and the output shaft at the lower end is connected to the upper end of the ball screw (18) through the lifting mechanism coupling (19); the inner side of the lifting mechanism connecting plate (11) is sleeved on the ball screw (18) and at the same time slides with the internal guide rail (20) of the lifting mechanism to achieve precise Linear displacement; the grating ruler assembly is vertically installed on one side of the lifting mechanism frame; the measuring mechanism comprises a displacement sensor for measuring inner diameter (6), two displacement sensors for measuring outer diameter (7), a displacement sensor for measuring height (8), a connecting plate for measuring inner diameter (21), a connecting plate guide slider for measuring inner diameter (22), a connecting plate for measuring outer diameter (23), a connecting plate guide slider for measuring height (24), a connecting plate for measuring height (25), a measuring mechanism guide rail (26), a connecting plate guide slider for measuring mechanism (31), a connecting plate guide slider for measuring outer diameter (32) and a connecting plate for measuring mechanism (33);The measuring mechanism guide rail (26) is arranged horizontally, the middle side surface is mounted on the outer end surface of the lifting mechanism connecting plate (11), and the bottom surfaces of both ends are respectively connected to a measuring mechanism connecting plate (33). Each measuring mechanism connecting plate (33) is mounted on a lifting mechanism guide rail (27) in a manner of up and down movement through a measuring mechanism connecting plate guide rail slider (31) arranged on the inner side surface thereof; the inner diameter measuring displacement sensor (6) is mounted on the lower end of the inner diameter measuring displacement sensor connecting plate (21), and the upper part of the inner diameter measuring displacement sensor connecting plate (21) is mounted on the middle part of the measuring mechanism guide rail (26) in a manner of horizontal movement through an inner diameter measuring displacement sensor connecting plate guide rail slider (22) for adjusting the horizontal position of the inner diameter measuring displacement sensor (6); two outer diameter measuring displacement sensors (7) are respectively mounted on the lower part of an outer diameter measuring displacement sensor connecting plate (23), and the upper parts of the two outer diameter measuring displacement sensor connecting plates (23) are respectively mounted on the lower part of an outer diameter measuring displacement sensor connecting plate (23). The displacement sensor connecting plate guide rail slider (32) is installed on both sides of the measuring mechanism guide rail (26) in a horizontally movable manner, and is used to adjust the horizontal position of the outer diameter measuring displacement sensor (7); two height measuring displacement sensors (8) are installed on two height measuring displacement sensor connecting plates (25), and the two height measuring displacement sensor connecting plates (25) are installed on the measuring mechanism guide rail (26) in a horizontally movable manner through the height measuring displacement sensor connecting plate guide rail slider (24) at the position between the inner diameter measuring displacement sensor connecting plate (21) and the two outer diameter measuring displacement sensor connecting plates (23), and are used to adjust the horizontal position of the height measuring displacement sensor (8); the PLC is electrically connected to the controller of the cylinder (1), the inner diameter measuring displacement sensor (6), the outer diameter measuring displacement sensor (7), the height measuring displacement sensor (8), the lifting mechanism motor (10), the electric rotary table motor (17) and the grating ruler assembly.

2. The bearing ring size detection device according to claim 1, characterized in that: The model of the PLC is S7-1200CPU1212C.

3. The bearing ring size detection device according to claim 1, characterized in that: The lifting mechanism motor (10) and the electric rotating platform motor (17) are both stepping motors and are equipped with stepping motor drivers.

4. The bearing ring size detection device according to claim 1, characterized in that: Magnetic switches are installed at both ends of the cylinder body of the cylinder (1) for detecting the state of the cylinder (1), and the magnetic switches are electrically connected to the PLC to achieve automatic detection through the control of the PLC.

5. The bearing ring size detection device according to claim 1, characterized in that: The inner diameter measuring displacement sensor (6), the outer diameter measuring displacement sensor (7) and the height measuring displacement sensor (8) are all capacitive grating displacement sensors.

6. A detection method using the bearing ring size detection device according to any one of claims 1 to 5, characterized in that: The detection method comprises the following steps performed in sequence: 1) Place the bearing ring (5) to be tested on the electric rotating table (4) and fix it with a clamp on the electric rotating table (4); 2) Under the control of the PLC, the air rod on the air cylinder (1) extends, causing the slide plate (3) to move on the slide table (15) along the slide table guide rail (16), thereby pushing the electric rotary table (4) and the bearing ring to be measured (5) to the designated measurement working position; 3) starting the lifting mechanism motor (10), driving the ball screw (18) to rotate through the lifting mechanism coupling (19), thereby driving the lifting mechanism connecting plate (11) to move downward, thereby driving the measuring mechanism to move, and after the measuring mechanism is lowered to the horizontal plane where the small retaining ring of the bearing ring (5) to be measured is located, the lifting mechanism motor (10) stops; 4) starting the electric rotating table motor (17), so that the electric rotating table (4) drives the bearing ring (5) to be measured to rotate one circle, and using two displacement sensors (7) for outer diameter measurement to simultaneously collect measurement data, to obtain the outer diameter d1 of the small retaining ring of the bearing ring (5) to be measured, and then the electric rotating table motor (17) stops; 5) The lifting mechanism motor (10) is started again, and the ball screw (18) is driven to rotate through the lifting mechanism coupling (19), thereby driving the lifting mechanism connecting plate (11) to continue to move downward, so that the measuring mechanism is lowered to a specified horizontal plane close to the small retaining ring of the bearing ring, and then the lifting mechanism motor (10) is stopped, and the descending height h1 of the measuring mechanism is obtained through the grating ruler assembly; 6) starting the electric rotating table motor (17), so that the electric rotating table (4) drives the bearing ring (5) to be measured to rotate one circle, and using the displacement sensor (6) for measuring the inner diameter, two displacement sensors (7) for measuring the outer diameter, and two displacement sensors (8) for measuring the height to simultaneously collect measurement data, so as to obtain the inner radius r1 of the bearing ring (5) to be measured, the outer diameter d2 of the small retaining ring close to the bearing ring, and the height h1 of the bearing ring (5) to be measured, and then the electric rotating table motor (17) stops; 7) The lifting mechanism motor (10) is started again, and the ball screw (18) is driven to rotate through the lifting mechanism coupling (19), thereby driving the lifting mechanism connecting plate (11) to continue to move downward, so that the measuring mechanism is lowered to a specified horizontal plane within the bearing ring raceway and close to the large retaining ring of the bearing ring (5) to be measured. The lifting mechanism motor (10) is stopped, and the descending height h2 of the measuring mechanism is obtained through the grating ruler assembly; 8) starting the electric rotating table motor (17), so that the electric rotating table (4) drives the bearing ring (5) to be measured to rotate one circle, and using two displacement sensors (7) for outer diameter measurement to simultaneously collect measurement data, the outer diameter d3 of the large retaining ring close to the bearing ring (5) to be measured is obtained, and then the electric rotating table motor (17) is stopped, and the outer diameter taper of the raceway of the bearing ring (5) to be measured is calculated according to the formula (d3-d2) / (h2-h1); 9) The lifting mechanism motor (10) is started again, and the ball screw (18) is driven to rotate through the lifting mechanism coupling (19), thereby driving the lifting mechanism connecting plate (11) to continue to move downward, so that the measuring mechanism is lowered to the horizontal plane where the large retaining ring of the bearing ring (5) to be measured is located, and then the lifting mechanism motor (10) is stopped; 10) starting the electric rotating table motor (17), so that the electric rotating table (4) drives the bearing ring (5) to be measured to rotate one circle, and using two displacement sensors (7) for measuring the outer diameter to simultaneously collect measurement data, the outer diameter d4 of the large retaining ring of the bearing ring (5) to be measured is obtained, and then the electric rotating table motor (17) is stopped; 11) causes the lifting mechanism motor (10) to reverse, and drives the ball screw (18) to rotate through the lifting mechanism coupling (19), thereby driving the lifting mechanism connecting plate (11) to move upward, so that the measuring mechanism moves upward to the initial position; the air rod on the cylinder (1) retracts, so that the slide plate (3) moves back along the slide guide rail (16) on the slide (15), thereby pulling the electric rotating table (4) and the bearing ring (5) to be measured back to the initial position, thereby completing the entire measurement process.

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