A protrusion measurement device based on angular contact ball bearing assembly line

Abstract

The present invention belongs to the field of bearing performance testing equipment, specifically, a protrusion measuring device based on an angular contact ball bearing assembly line, including a base plate, an air-floating turntable component, a supporting stand, a lifting component, a moving seat, and a measuring component for measuring the protrusion. The present invention uses an air-floating turntable to rotate and drive the bearing to be tested to rotate at a uniform speed, which can reduce the influence of the driving component on the measurement result, thereby making the measurement data more real and reliable, and can eliminate the measurement interference caused by the rotary drive to the greatest extent; through the servo motor and the linear module drive, the moving seat can be accurately controlled to move up and down, and the guide rail slider combined with the linear module ensures that the vertical Z-direction motion has high linearity, so that the repeatability of the detection position is better; through the overall setting of the measuring component, the impact force of the contact between the measuring component and the bearing to be tested is small, the service life of the sensor is increased, and the vibration is small, thereby also reducing the detection error caused by vibration.

Description

Technical Field

[0001] The invention belongs to the field of bearing performance detection equipment, in particular to a protrusion measurement device based on an angular contact ball bearing assembly line. Background Art

[0002] Angular contact ball bearings are the most widely used bearings. They are superior in the ability to bear axial loads and are more suitable for high-speed operation. At present, the production and assembly process of angular contact bearings in China mainly adopts manual assembly. The reason is that angular contact bearings have many models and specifications, high precision requirements, high measurement difficulty, large production batches, high cost and technical difficulty of using automated assembly lines, which also makes it difficult to ensure the consistency of product assembly quality and improve efficiency. For the above reasons, it is very necessary to use high-efficiency measuring equipment in automated assembly lines. Among them, the protrusion of angular contact ball bearings is an important parameter affecting the performance of bearings, and the protrusion of the bearing end face is an important technical indicator of the dynamic performance quality of bearings. It not only affects the rotation accuracy, stiffness, vibration and noise of the spindle, but also directly affects the service life of the assembled bearings and the entire spindle. The measurement of the protrusion value is a necessary procedure in the assembly process. At present, manual measurement is generally used, which is inefficient and labor-intensive, and it is difficult to meet the use scenarios of angular contact ball bearing automated assembly lines. Summary of the invention

[0003] In view of the above problems, an object of the present invention is to provide a protrusion measuring device based on an angular contact ball bearing assembly line.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A protrusion measuring device based on an angular contact ball bearing assembly line comprises a base plate, an air-floating turntable component, a supporting seat, a lifting component, a movable seat and a measuring component for measuring the protrusion, wherein the air-floating turntable component and the supporting seat are respectively mounted on the base plate, the air-floating turntable component drives the inner ring of the bearing to be measured placed on the air-floating turntable component to rotate, the lifting component is mounted on the supporting seat and drives the movable seat to move up and down, and the measuring component is mounted on the movable seat.

[0006] The present invention also includes a calibration component, which includes a cylinder mounting plate, a pushing cylinder, a pushing block and a calibration seat. The cylinder mounting plate is installed on the supporting seat, and the pushing cylinder is installed on the cylinder mounting plate. One end of the pushing block is connected to the output end of the pushing cylinder, and the other end is connected to the calibration seat. A standard bearing for calibration is installed on the calibration seat; the output end of the pushing cylinder extends out, and the calibration seat is driven by the pushing block to send the standard bearing on the calibration seat to the air floating turntable component.

[0007] A plurality of guide rods are installed on the pushing block, and one end of each guide rod passes through the cylinder mounting plate respectively.

[0008] A limit block A is respectively provided on one end of each guide rod passing through the cylinder mounting plate.

[0009] The cylinder mounting plate is provided with guide bearings respectively arranged corresponding to the guide rods, and the guide rods respectively pass through the corresponding guide bearings.

[0010] The lifting component includes a servo motor and a linear module respectively installed on the supporting seat, the output end of the servo motor is connected to the input end of the linear module, and the output end of the linear module is connected to the moving seat.

[0011] A guide rail is installed on the supporting seat, and a sliding block slidably connected with the guide rail is installed on the moving seat.

[0012] The air-floating turntable component includes an air-floating turntable, a substrate and a reference plate. The air-floating turntable is installed on the bottom plate, the substrate is installed on the output end of the air-floating turntable, and the reference plate is installed on the substrate. The air-floating turntable drives the inner ring of the bearing to be tested to rotate via the substrate and the reference plate.

[0013] The measuring component comprises a flange plate, a movable sleeve, a sensor, a measuring die sleeve, a transition shaft and an inner ring contact, wherein the flange plate is mounted on the movable seat, and a sloped surface whose diameter gradually decreases from top to bottom is provided on the outer peripheral surface of the movable sleeve, and an inclined inner hole matching the sloped surface A is provided on the inner side of the flange plate, and a plurality of groups of movable sleeve limiting members for limiting the top end of the movable sleeve are mounted on the flange plate, and the bottom end of the movable sleeve is connected to the top end of the measuring die sleeve, and the bottom end of the measuring die sleeve presses the outer ring of the bearing to be measured;

[0014] A guide sleeve is provided on the inner side of the movable sleeve, an upper sealing sleeve is installed on the upper end of the guide sleeve, a fixing block is installed on the upper side of the upper sealing sleeve, and a sensor fixing frame is installed on the upper end of the fixing block;

[0015] The lower end of the transition shaft is connected to the inner ring contact, and the inner ring contact abuts against the end face of the inner ring of the bearing to be tested. The transition shaft passes through the guide sleeve, the upper seal sleeve and the fixed block in sequence from bottom to top. A limiting shoulder is provided on the transition shaft in the guide sleeve, a limiting step surface is provided inside the upper seal sleeve, a spring is sleeved on the transition shaft between the limiting shoulder and the limiting step surface, a locking nut is provided on the transition shaft inside the fixed block, and a stopper is sleeved on the transition shaft between the locking nut and the upper seal sleeve;

[0016] The sensor is mounted on the sensor fixing bracket, and the detection end of the sensor abuts against the upper end of the transition shaft.

[0017] Each group of the movable sleeve limiting parts includes a limiting column and a limiting block B. One end of the limiting column is connected to the flange plate, and the other end is connected to the limiting block B. The limiting block B blocks the top end of the movable sleeve.

[0018] The advantages and positive effects of the present invention are:

[0019] 1. The present invention uses an air-floating turntable to rotate and drive the bearing to be measured to rotate at a uniform speed. The air-floating turntable has high rotation accuracy, and the radial runout and axial runout can reach an accuracy of less than 0.1 micron. The high-precision rotation will reduce the influence of the driving components on the measurement results, so that the measurement data is more real and reliable, and the measurement interference caused by the rotary drive can be eliminated to the greatest extent. The air-floating turntable is driven by a servo motor and is equipped with a grating ruler. The rotation resolution is high and the speed control is accurate. At the same time, the air-floating turntable has a large bearing stiffness and a stable posture;

[0020] 2. The present invention is driven by a servo motor and a linear module, and the guide rail slider guides and drives the measuring pen component to move up and down in the Z direction. The servo motor speed is adjustable. When measuring, the downward moving position is accurately controlled and the speed can be gradually slowed down. The guide rail slider combined with the linear module ensures that the vertical Z-direction movement has high linearity, making the repeatability of the detection position better; through the overall setting of the measuring component, the impact force of the measuring component contacting the bearing to be measured is small, the service life of the sensor is increased, and the vibration is small, thereby reducing the detection error caused by vibration;

[0021] 3. The present invention can upload data to a host computer or server, and then transmit it to a protrusion marking machine to mark the data on the large end face of the inner ring of the bearing in real time. It can be adapted to the assembly rhythm of an automated assembly line to ensure assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0025] Figure 4 It is a side view structural schematic diagram of the present invention;

[0026] Figure 5 It is a schematic diagram of the arrangement structure of the calibration component of the present invention;

[0027] Figure 6It is a schematic diagram of the arrangement structure of the measuring component of the present invention;

[0028] Figure 7 for Figure 6 A magnified image of point A;

[0029] Figure 8 for Figure 6 Enlarged view of point B.

[0030] In the figure: 1 is a bottom plate, 2 is a channel plate, 3 is a support seat, 4 is a moving seat, 5 is a cylinder mounting plate, 6 is a push cylinder, 7 is a push block, 8 is a calibration seat, 9 is a guide rod, 10 is a limit block A, 11 is a guide bearing, 12 is a servo motor, 13 is a linear module, 14 is a guide rail, 15 is a slider, 16 is an air-floating turntable, 17 is a base plate, 18 is a reference plate, 19 is a flange plate, 20 is a movable sleeve, 21 is a sensor, 22 is a measuring die sleeve, 23 is a transition shaft, 24 is an inner ring contact, 25 is a guide sleeve, 26 is an upper sealing sleeve, 27 is a fixed block, 28 is a sensor fixing frame, 29 is a spring, 30 is a locking nut, 31 is a stopper, 32 is a limit column, 33 is a limit block B, 34 is a channel plate column, 35 is a cylinder mounting plate column, 36 is a counterweight ring, and 37 is a steel ball bushing;

[0031] 001 is the bearing to be tested, 0011 is the inner ring of the bearing to be tested, 0012 is the outer ring of the bearing to be tested, and 002 is the standard bearing. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-8 The present invention is further described in detail.

[0033] A protrusion measurement device based on an angular contact ball bearing assembly line, such as Figure 1-4 As shown, this embodiment includes a base plate 1, an air-floating turntable component, a supporting seat 3, a lifting component, a movable seat 4 and a measuring component for measuring the protrusion amount. The air-floating turntable component and the supporting seat 3 are respectively installed on the base plate 1. The air-floating turntable component drives the inner ring 0011 of the bearing to be measured placed on the air-floating turntable component to rotate. The lifting component is installed on the supporting seat 3 and drives the movable seat 4 to move up and down. The measuring component is installed on the movable seat 4.

[0034] Specifically, if Figure 1-5As shown, the present embodiment also includes a calibration component, which includes a cylinder mounting plate 5, a push cylinder 6, a push block 7 and a calibration seat 8. The cylinder mounting plate 5 is mounted on the support seat 3 through the cylinder mounting plate column 35. The push cylinder 6 is mounted on the cylinder mounting plate 5. One end of the push block 7 is connected to the output end of the push cylinder 6 and the other end is connected to the calibration seat 8. The calibration seat 8 is mounted with a standard bearing 002 for calibration. The output end of the push cylinder 6 extends out, and the calibration seat 8 is driven by the push block 7 to deliver the standard bearing 002 on the calibration seat 8 to the air-floating turntable component. Two guide rods 9 are mounted on the push block 7. One end of each guide rod 9 passes through the cylinder mounting plate 5 respectively. A limit block A10 is provided on one end of each guide rod 9 passing through the cylinder mounting plate 5. A guide bearing 11 corresponding to each guide rod 9 is provided on the cylinder mounting plate 5. Each guide rod 9 passes through the corresponding guide bearing 11. The guide rod 9 is provided to guide the push block 7, and the limit block A10 is provided to prevent the push cylinder 6 from overextending. In this embodiment, the push cylinder 6 is a commercial product, and its operation is controlled by a host computer.

[0035] Specifically, if Figure 1-4 As shown, the lifting component in this embodiment includes a servo motor 12 and a linear module 13 respectively installed on the support seat 3, the output end of the servo motor 12 is connected to the input end of the linear module 13, and the output end of the linear module 13 is connected to the moving seat 4; a guide rail 14 is installed on the support seat 3, and a slider 15 slidably connected to the guide rail 14 is installed on the moving seat 4. Through the coordinated arrangement of the servo motor 12, the linear module 13, the guide rail 14 and the slider 15, the moving seat 4 can be stably and accurately moved up and down. In this embodiment, the servo motor 12 and the linear module 13 are both commercially available products, and the servo motor 12 is connected to the host computer, and the action is controlled by the host computer.

[0036] Specifically, if Figure 6 and Figure 7 As shown, the air-floating turntable components in this embodiment include an air-floating turntable 16, a substrate 17 and a reference disk 18. The air-floating turntable is installed on the bottom plate 1, the substrate 17 is installed on the output end of the air-floating turntable 16, and the reference disk 18 is installed on the substrate 17. The air-floating turntable 16 drives the inner ring 0011 of the bearing to be tested to rotate through the substrate 17 and the reference disk 18. The air-floating turntable 16 is connected to the host computer and the operation is controlled by the host computer. In this embodiment, a channel plate 2 is also installed on the bottom plate 1 through a channel plate column 34. The reference disk 18 passes through the channel plate 2. The channel plate 2 is an integral part of the bearing assembly line and is used to move the bearing to be tested 001 along the assembly line to the reference disk 18 for detection. In this embodiment, the purchase brand model of the air-floating turntable 16 is Zhongjingwei D200, and a grating ruler is provided inside; the substrate 17 and the reference disk 18 are ground parts, and the material is 42CrMo, which is wear-resistant and has a small deformation, and is suitable for use in detection equipment.

[0037] Specifically, if Figure 6 , Figure 7 and Figure 8 As shown, the measuring components in this embodiment include a flange plate 19, a movable sleeve 20, a sensor 21, a measuring die sleeve 22, a transition shaft 23 and an inner ring contact 24. The flange plate 19 is installed on the movable seat 4. The outer peripheral surface of the movable sleeve 20 is provided with a slope surface whose diameter gradually decreases from top to bottom. The inner side of the flange plate 19 is provided with an inclined inner hole that matches the slope surface A. Several groups of movable sleeve limiters for limiting the top of the movable sleeve 20 are installed on the flange plate 19. The bottom end of the movable sleeve 20 is connected to the top of the measuring die sleeve 22. The outer periphery of the measuring die sleeve 22 is also covered with a counterweight ring 36. The bottom end of the measuring die sleeve 22 presses the outer ring 0012 of the bearing to be measured. The whole composed of the measuring die sleeve 22 and the counterweight ring 36 provides partial ballast force, and the counterweight ring 36 can be replaced according to needs to change the ballast force; the inner side of the movable sleeve 20 is provided with a guide sleeve 25, and the upper end of the guide sleeve 25 is provided with an upper sealing sleeve 26. The upper sealing sleeve 26 A fixing block 27 is installed on the upper end of the fixing block 27, and a sensor fixing frame 28 is installed on the upper side of the fixing block 27; the lower end of the transition shaft 23 is connected to the inner ring contact 24, and the inner ring contact 24 abuts against the upper end surface of the inner ring 0011 of the bearing to be tested. The transition shaft 23 passes through the guide sleeve 25, the upper sleeve 26 and the fixing block 27 from bottom to top in sequence. A steel ball bushing 37 for guiding is also provided between the guide sleeve 25 and the transition shaft 23. A limiting shoulder is provided on the transition shaft 23 located in the guide sleeve 25, and a limiting step surface is provided inside the upper sleeve 26. A spring 29 is sleeved on the transition shaft 23 between the limiting shoulder and the limiting step surface. A locking nut 30 is provided on the transition shaft 23 located inside the fixing block 27, and a stopper 31 is sleeved on the transition shaft 23 between the locking nut 30 and the upper sleeve 26; the sensor 21 is installed on the sensor fixing frame 28, and the detection end of the sensor 21 abuts against the upper end of the transition shaft 23, which is convenient for disassembly and assembly. Each set of movable sleeve limiters includes a limit column 32 and a limit block B 33. One end of the limit column 32 is connected to the flange plate 19 and the other end is connected to the limit block B 33. The limit block B 33 blocks the top of the movable sleeve 20. The sensor 21 of this embodiment adopts a GT2 pen-type contact digital sensor of the Keyence brand with a resolution of 0.1 micron and a stroke of 10 mm. The sensor 21 is connected to the host computer.

[0038] Working principle:

[0039] Before use, the push cylinder 6 is pushed out, and the push block 7 drives the calibration seat 8 and the standard bearing 002 inside to the predetermined position, that is, on the reference disk 18, and the sample is calibrated first. After the calibration, the push cylinder 6 is retracted, driving the standard bearing 002 to return to the starting position; when measuring the bearing 001 to be measured, the bearing 001 to be measured reaches the reference disk 18 via the channel plate 2, and the movable seat 4 is controlled to descend. The inner ring contact 24 first contacts the upper end surface of the inner ring 0011 of the bearing to be measured, and after the measuring die sleeve 22 contacts and presses the upper end surface of the outer ring 0012 of the bearing to be measured, the spring 29 is compressed at this time, and the limit block B 33 blocks the top of the movable sleeve 20, and at the same time, the air floating turntable 16 drives the inner ring 0011 of the bearing to be measured to rotate, and the transition shaft 23 inside the measuring die sleeve 22 will have a Z-direction movement as a whole, and the sensor 21 will measure the digital value of the change in the Z-direction movement distance, and calculate the protrusion value through the host computer connected to the sensor 21, and the calculation method adopts the existing technology.

Claims

1. A protrusion measurement device based on an angular contact ball bearing assembly line, characterized in that: It comprises a base plate (1), an air-floating turntable component, a supporting seat (3), a lifting component, a movable seat (4) and a measuring component for measuring the protrusion amount, wherein the air-floating turntable component and the supporting seat (3) are respectively mounted on the base plate (1), the air-floating turntable component drives the inner ring of the bearing to be measured placed on the air-floating turntable component to rotate, the lifting component is mounted on the supporting seat (3) and drives the movable seat (4) to move up and down, and the measuring component is mounted on the movable seat (4); It also includes a calibration component, which includes a cylinder mounting plate (5), a push cylinder (6), a push block (7) and a calibration seat (8), wherein the cylinder mounting plate (5) is mounted on the support stand (3), the push cylinder (6) is mounted on the cylinder mounting plate (5), one end of the push block (7) is connected to the output end of the push cylinder (6), and the other end is connected to the calibration seat (8), and a standard bearing for calibration is mounted on the calibration seat (8); the output end of the push cylinder (6) extends out, and drives the calibration seat (8) through the push block (7) to deliver the standard bearing on the calibration seat (8) to the air-floating turntable component; The measuring component comprises a flange plate (19), a movable sleeve (20), a sensor (21), a measuring die sleeve (22), a transition shaft (23) and an inner ring contact (24); the flange plate (19) is mounted on the movable seat (4); an outer peripheral surface of the movable sleeve (20) is provided with a slope surface portion whose diameter gradually decreases from top to bottom; an inner side of the flange plate (19) is provided with an inclined inner hole that matches the slope surface portion A; a plurality of groups of movable sleeve limiting members for limiting the top end of the movable sleeve (20) are mounted on the flange plate (19); the bottom end of the movable sleeve (20) is connected to the top end of the measuring die sleeve (22); and the bottom end of the measuring die sleeve (22) presses the outer ring of the bearing to be measured; A guide sleeve (25) is provided on the inner side of the movable sleeve (20), an upper sealing sleeve (26) is installed on the upper end of the guide sleeve (25), a fixing block (27) is installed on the upper side of the upper sealing sleeve (26), and a sensor fixing frame (28) is installed on the upper end of the fixing block (27); The lower end of the transition shaft (23) is connected to the inner ring contact (24), and the inner ring contact (24) abuts against the end face of the inner ring of the bearing to be tested. The transition shaft (23) passes through the guide sleeve (25), the upper sealing sleeve (26) and the fixed block (27) from bottom to top in sequence. A limiting shoulder is provided on the transition shaft (23) in the guide sleeve (25), a limiting step surface is provided inside the upper sealing sleeve (26), a spring (29) is sleeved on the transition shaft (23) between the limiting shoulder and the limiting step surface, a locking nut (30) is provided on the transition shaft (23) inside the fixed block (27), and a stopper (31) is sleeved on the transition shaft (23) between the locking nut (30) and the upper sealing sleeve (26); The sensor (21) is mounted on the sensor fixing frame (28), and the detection end of the sensor (21) abuts against the upper end of the transition shaft (23).

2. The protrusion measurement device based on the angular contact ball bearing assembly line according to claim 1 is characterized in that: A plurality of guide rods (9) are mounted on the pushing block (7), and one end of each guide rod (9) passes through the cylinder mounting plate (5).

3. The protrusion measurement device based on the angular contact ball bearing assembly line according to claim 2 is characterized in that: A limit block A (10) is provided on one end of each guide rod (9) passing through the cylinder mounting plate (5).

4. The protrusion measurement device based on the angular contact ball bearing assembly line according to claim 2 is characterized in that: The cylinder mounting plate (5) is provided with guide bearings (11) respectively arranged corresponding to the guide rods (9), and each guide rod (9) passes through the corresponding guide bearing (11).

5. The protrusion measurement device based on the angular contact ball bearing assembly line according to claim 1 is characterized in that: The lifting component comprises a servo motor (12) and a linear module (13) respectively mounted on the supporting seat (3); an output end of the servo motor (12) is connected to an input end of the linear module (13), and an output end of the linear module (13) is connected to the moving seat (4).

6. The protrusion measurement device based on the angular contact ball bearing assembly line according to claim 1 is characterized in that: A guide rail (14) is installed on the supporting seat (3), and a sliding block (15) slidably connected to the guide rail (14) is installed on the moving seat (4).

7. The protrusion measurement device based on the angular contact ball bearing assembly line according to claim 1 is characterized in that: The air-floating turntable component comprises an air-floating turntable (16), a base plate (17) and a reference plate (18); the air-floating turntable is mounted on the bottom plate (1); the base plate (17) is mounted on the output end of the air-floating turntable (16); the reference plate (18) is mounted on the base plate (17); the air-floating turntable (16) drives the inner ring of the bearing to be tested to rotate via the base plate (17) and the reference plate (18).

8. The protrusion measurement device based on the angular contact ball bearing assembly line according to claim 1 is characterized in that: Each set of the movable sleeve limiting parts comprises a limiting column (32) and a limiting block B (33), one end of the limiting column (32) is connected to the flange plate (19), and the other end is connected to the limiting block B (33), and the limiting block B (33) blocks the top end of the movable sleeve (20).

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