A contact angle measuring device based on angular contact ball bearing assembly line

Abstract

The present invention belongs to the field of bearing performance testing equipment, specifically, a contact angle 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 contact angle. 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 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 contact angle measuring device based on an angular contact ball bearing assembly line. Background Art

[0002] When an angular contact ball bearing is subjected to axial load, the angle between the line connecting the actual contact points between the inner and outer ring grooves and the steel ball and the radial plane parallel to the end face of the bearing is the actual contact angle of the bearing. The size of the contact angle of an angular contact ball bearing directly affects the bearing's load-bearing capacity, rigidity and working reliability, and the value of the contact angle should be controlled as required during the production process. At present, the industry mainly controls the contact angle by controlling the radial clearance, but there is a certain difference between the measured radial clearance of the bearing and the theoretical value, and the error of the groove curvature radius is also relatively large during production, so it is difficult to achieve the ideal requirements by measuring the radial clearance to control the contact angle. At present, manual measurement is generally used, which is inefficient and labor-intensive, and it is difficult to meet the use scenarios of the automated assembly line of angular contact ball bearings. Summary of the invention

[0003] In view of the above problems, an object of the present invention is to provide a contact angle 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 contact angle measuring device based on an angular contact ball bearing assembly line comprises a base plate, an air-floating turntable component, a supporting stand, a lifting component, a movable seat and a measuring component for measuring the contact angle, wherein the air-floating turntable component and the supporting stand are respectively mounted on the base plate, the air-floating turntable component drives the inner ring of a bearing to be measured placed on the air-floating turntable component to rotate, the lifting component is mounted on the supporting stand 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 and drives the inner ring of the bearing to be tested to rotate.

[0013] The measuring component comprises a flange plate, a ramp flange, a sensor, a loading sleeve, a ramp block and a retaining frame pressure head. The flange plate is mounted on the moving seat. The outer peripheral surface of the ramp flange is provided with a ramp surface A whose diameter gradually decreases from top to bottom. The inner side of the flange plate is provided with an inclined inner hole A that matches the ramp surface A. The flange plate is provided with a plurality of groups of ramp flange stoppers for limiting the top end of the ramp flange. The bottom end of the ramp flange is connected to the top end of the loading sleeve, and the bottom end of the loading sleeve presses the outer ring of the bearing to be measured.

[0014] The ramp block and the sensor are respectively arranged on the inner side of the loading sleeve, a marking block used in conjunction with the sensor is installed on the top of the ramp block, a ramp surface B with a diameter gradually decreasing from top to bottom is provided on the outer circumferential surface of the ramp block, an inclined inner hole B matching the ramp surface B is provided on the inner side of the loading sleeve, the lower end of the ramp block passes through the inclined inner hole B and is connected to the retainer pressure head, and the retainer pressure head presses the retainer of the bearing to be tested.

[0015] Each set of the slope flange 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 of the slope flange.

[0016] The advantages and positive effects of the present invention are:

[0017] 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 microns. The high-precision rotation can reduce the influence of the driving components on the measurement results, thereby making the measurement data more real and reliable, and can eliminate the measurement interference caused by the rotary drive 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.

[0018] 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;

[0019] 3. The present invention can upload data to a host computer or server, record and store data in real time, and judge whether the bearing contact angle meets the assembly process based on the measured data. In this way, the assembly rhythm of the automated assembly line can be applied to ensure assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0023] Figure 4 It is a side view structural schematic diagram of the present invention;

[0024] Figure 5 It is a schematic diagram of the arrangement structure of the calibration component of the present invention;

[0025] Figure 6 It is a schematic diagram of the arrangement structure of the measuring component of the present invention;

[0026] Figure 7 for Figure 6 A magnified image of point A;

[0027] Figure 8 for Figure 6 Enlarged view of point B.

[0028] 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 marking 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 slope flange, 21 is a sensor, 22 is a loading sleeve, 23 is a slope block, 24 is a retaining frame pressure head, 25 is a marking block, 26 is a limit column, 27 is a limit block B, 28 is a channel plate column, 29 is a cylinder mounting plate column, and 30 is a sensor fixing frame;

[0029] 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, 0013 is the retaining frame of the bearing to be tested, and 002 is the standard bearing. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-8 The present invention is further described in detail.

[0031] A contact angle measuring 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 a contact angle. 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.

[0032] Specifically, if Figure 1-5 As 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 29. 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.

[0033] 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.

[0034] 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 28. 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 testing. 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 testing equipment.

[0035] Specifically, if Figure 6 , Figure 7 and Figure 8As shown, the measuring components in this embodiment include a flange plate 19, a sloped flange 20, a sensor 21, a loading sleeve 22, a sloped block 23 and a retaining frame pressure head 24. The flange plate 19 is installed on the moving seat 4. The outer peripheral surface of the sloped flange 20 is provided with a sloped surface A whose diameter gradually decreases from top to bottom. The inner side of the flange plate 19 is provided with an inclined inner hole A that matches the sloped surface A. A plurality of groups of sloped flange stoppers for limiting the top end of the sloped flange 20 are installed on the flange plate 19. The bottom end of the sloped flange 20 is connected to the top end of the loading sleeve 22, and the bottom end of the loading sleeve 22 presses the shaft to be measured. The outer ring 0012 of the bearing; the slope block 23 and the sensor 21 are respectively arranged on the inner side of the loading sleeve 22, the top of the slope block 23 is installed with a marking block 25 used in conjunction with the sensor 21, the sensor 21 is installed on the slope flange 20 through the sensor fixing bracket 30, the outer peripheral surface of the slope block 23 is provided with a slope surface B whose diameter gradually decreases from top to bottom, the inner side of the loading sleeve 22 is provided with an inclined inner hole B that matches the slope surface B, the lower end of the slope block 23 passes through the inclined inner hole B and is connected to the retainer pressure head 24, and the retainer pressure head 24 presses the retainer 0013 of the bearing to be tested. Each set of ramp flange limiters includes a limit column 26 and a limit block B 27. One end of the limit column 26 is connected to the flange plate 19 and the other end is connected to the limit block B 27. The limit block B 27 blocks the top of the ramp flange 20. The limit block B 27, the loading sleeve 22 and the ramp flange 20 constitute a loading weight of the outer ring 0012 of the bearing to be tested. The overall weight is designed according to the relevant measurement process standards, and the loading force is provided between 10N-60N, which is used to load to the upper end face of the outer ring 0012 of the bearing to be tested, limit the rotation of the outer ring 0012 of the bearing to be tested, and the rotation of the air-floating turntable 16 drives the inner ring 0011 of the bearing to be tested to rotate. The sensor 21 of this embodiment adopts an Omron brand optical fiber sensor with a model number of E32-E211, and the sensor 21 is connected to the host computer.

[0036] Working principle:

[0037] 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, the reference plate 18, and the sample is calibrated first. After the calibration, the push cylinder 6 is retracted to drive the standard bearing 002 back to the starting position; when measuring the bearing 001 to be measured, the bearing 001 to be measured reaches the reference plate 18 through the channel plate 2, and the moving seat 4 is controlled to descend. After the loading sleeve 22 contacts and presses the upper end face of the outer ring 0012 of the bearing to be measured, the air-floating turntable 16 rotates to drive the inner ring 0011 of the bearing to be measured to rotate, and the cage rolling body passes through the inner ring 0011 of the bearing to be measured and the inner ring 0012 of the bearing to be measured. The friction force drives the rotation, and the upper side of the retainer 0013 of the bearing to be tested is pressed by the slope block 23 and the retainer pressure head 24. After the loading sleeve 22 presses the upper end surface of the retainer 0013 of the bearing to be tested, the slope block 23 separates from the slope surface B of the loading sleeve 22, so that it can rotate with the retainer 0013 of the bearing to be tested. During the rotation, the marking block 25 will trigger the sensor 21 to record the number of rotations, and the number of rotations of the inner ring 0011 of the bearing to be tested can be obtained by the air-floating turntable 16 through the built-in grating ruler output, so that the measured rotation data can be used to calculate the contact angle value through the host computer connected to the sensor 21, and the calculation method adopts the existing technology.

Claims

1. A contact angle measuring 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 a contact angle, 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 a 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 ramp flange (20), a sensor (21), a loading sleeve (22), a ramp block (23) and a retaining frame pressure head (24); the flange plate (19) is mounted on the moving seat (4); a ramp surface A whose diameter gradually decreases from top to bottom is provided on the outer peripheral surface of the ramp flange (20); an inclined inner hole A matching the ramp surface A is provided on the inner side of the flange plate (19); a plurality of groups of ramp flange stoppers for limiting the top end of the ramp flange (20) are mounted on the flange plate (19); the bottom end of the ramp flange (20) is connected to the top end of the loading sleeve (22); and the bottom end of the loading sleeve (22) presses the outer ring of the bearing to be measured; The ramp block (23) and the sensor (21) are respectively arranged on the inner side of the loading sleeve (22); a marking block (25) used in conjunction with the sensor (21) is installed on the top of the ramp block (23); a ramp surface B with a diameter gradually decreasing from top to bottom is provided on the outer peripheral surface of the ramp block (23); an inclined inner hole B matching the ramp surface B is provided on the inner side of the loading sleeve (22); the lower end of the ramp block (23) passes through the inclined inner hole B and is connected to the retainer pressure head (24); the retainer pressure head (24) presses the retainer of the bearing to be tested.

2. The contact angle measuring 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 contact angle measuring device based on the angular contact ball bearing assembly line according to claim 2, 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 contact angle measuring device based on the angular contact ball bearing assembly line according to claim 2, 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 contact angle measuring device based on the angular contact ball bearing assembly line according to claim 1, 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 contact angle measuring device based on the angular contact ball bearing assembly line according to claim 1, 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 contact angle measuring device based on the angular contact ball bearing assembly line according to claim 1, 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) and drives the inner ring of the bearing to be tested to rotate.

8. The contact angle measuring device based on the angular contact ball bearing assembly line according to claim 1, characterized in that: Each set of the slope flange limiting members comprises a limiting column (26) and a limiting block B (27), one end of the limiting column (26) is connected to the flange plate (19), and the other end is connected to the limiting block B (27), and the limiting block B (27) blocks the top end of the slope flange (20).

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