Bearing torque detector

Abstract

The utility model discloses a bearing torque detection machine, comprising an inner ring test shaft, the inner ring test shaft is driven by a servo motor, the servo motor is driven by an upper lifting cylinder to lift, a support seat is arranged right below the inner ring test shaft, the top of the support seat is provided with a sphere groove, a sphere is movably arranged in the sphere groove, and the top of the sphere is exposed out of the sphere groove. The outer sleeve is arranged above the ball groove, the tool is arranged at the upper end of the outer sleeve, the upper end face of the tool can abut against an outer ring of a bearing to be detected, a gap is reserved between an inner ring and the upper end face of the tool, a groove sleeve is arranged at the bottom of the outer sleeve, the groove sleeve can sleeve and wrap the ball groove, and the detection rod is arranged on the side wall of the outer sleeve. A torque sensor is arranged on one side of the supporting seat, and when the inner ring test shaft descends and rotates through the action of the to-be-detected bearing on the outer sleeve, the bottom face in the groove sleeve abuts against the ball body. According to the utility model, point-surface contact is adopted to reduce friction force, so that adverse effects on torque detection are reduced, and detection errors are reduced.

Description

Technical Field

[0001] The utility model relates to the field of torque detection, in particular to a bearing torque detection machine. Background Art

[0002] After the bearing is assembled, it needs to be tested for torque. The general torque test is: rotate the inner ring, then drive the outer ring to rotate, and detect the torque of the detected bearing through the sensor. For example, in the Chinese utility model patent with the authorization announcement on November 30, 2018 and the announcement number CN208171500 U, a deep groove ball bearing rotation torque detection mechanism is disclosed. A support seat is fixed at the right end of the bottom plate, and a precision weighing sensor is installed on the support seat. A connector is provided on the top of the precision weighing sensor. One end of the measuring rod is fixed to the connector, and the other end of the measuring rod extends into the outer ring chuck. A plurality of fastening screws are provided on the outer ring chuck. The fastening screws are matched with the outer ring chuck thread, and each fastening screw points to the center of the outer ring chuck. During the test, the deep groove ball bearing is mounted on the test shaft, and the inner ring of the deep groove ball bearing can rotate with the test shaft; the outer ring chuck surrounds the outer ring of the deep groove ball bearing, tighten the fastening screws on the outer ring chuck, and tighten the outer ring of the deep groove ball bearing. The probe of the measuring rod contacts the circumferential surface of the outer ring of the deep groove ball bearing. The test shaft drives the deep groove ball bearing to operate, and the data measured by the precision weighing sensor through the measuring rod is transmitted to the detection control system by the data line to check and analyze the rotational torque of the deep groove ball bearing. However, when detecting the torque, there is a large friction force on the outer ring of the bearing, and there will be a certain detection error. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a bearing torque detection machine with reduced detection error.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a bearing torque detection machine, comprising an inner ring test shaft that can abut against the inner ring of the bearing to be detected, the inner ring test shaft is driven by a servo motor, and the servo motor is driven to rise and fall by an upper lifting cylinder. A support seat is arranged directly below the inner ring test shaft, the top of the support seat has a spherical groove, a sphere is movably arranged in the spherical groove, the top of the sphere leaks out of the spherical groove, a jacket is arranged above the spherical groove, a tool is arranged at the upper end of the jacket, the upper end surface of the tool can abut against the outer ring of the bearing to be detected, a gap is left between the inner ring and the upper end surface of the tool, a groove sleeve is arranged at the bottom of the jacket, the groove sleeve can be sleeved and wrap the spherical groove, a detection rod is arranged on the side wall of the jacket, a torque sensor is arranged on one side of the support seat, when the inner ring test shaft passes through the bearing to be detected and acts on the jacket to descend and rotate, the bottom surface of the groove sleeve abuts against the sphere.

[0005] The beneficial effect of the utility model is that after the inner ring test shaft descends and drives the inner ring of the bearing to be tested to rotate, once it is transmitted to the outer ring through resistance, the outer ring will transmit the downward pressure and rotation force to the tooling abutting against its bottom to descend and rotate. Similarly, the tooling will also transmit the force to the outer sleeve, so that the bottom surface of the groove sleeve at the bottom of the outer sleeve abuts against the sphere. At this time, friction is reduced through point and surface contact, which brings adverse effects to torque detection and reduces detection errors.

[0006] Preferably, a stripper plate is provided above the support seat, the stripper plate is driven to rise and fall by a lower lifting cylinder, a through hole is provided on the stripper plate, and the through hole and the groove sleeve are both in an inverted cone shape. After the inspection is completed, the inverted cone structure is used to make the stripper plate drive the tooling and the outer sleeve to move upward, so that they are separated from the ball of the support seat to wait for the inspection of the next bearing to be inspected.

[0007] Preferably, the upper portion of the ball groove is cylindrical, and the lower portion is conical.

[0008] Preferably, a wear-resistant pad is provided on the bottom surface of the groove sleeve to increase the wear resistance of the groove sleeve.

[0009] Preferably, a sinking groove is provided at a position of the upper end surface of the tooling corresponding to the inner ring, and a gap is left between the sinking groove and the inner ring.

[0010] Preferably, the inner ring test shaft and the servo motor are fixed on the upper frame, the upper frame is slidably arranged on the frame through a longitudinal slide rail, the upper lifting cylinder is fixed on the frame, the upper lifting cylinder is connected to the upper frame through a middle leakage solenoid valve, a pulley block is arranged on the frame, a pulley rope is connected to the upper frame, the pulley rope is wound on the pulley block and is connected and fixed to the counterweight. Through the arrangement of the counterweight and the middle leakage solenoid valve, the force exerted by the upper lifting cylinder on the upper frame can be adjusted.

[0011] Preferably, the pulley block comprises a top pulley and a side pulley, wherein the top pulley is fixed on the top of the frame, and the side pulley is fixed on one side of the frame.

[0012] Preferably, a connecting plate is connected to one side of the stripper plate, and the connecting plate is slidably arranged on the longitudinal slide rail through a slider, so as to ensure the stability of the stripper plate when being lifted and lowered, and adopt the same longitudinal slide rail as the upper frame, thus saving costs and ensuring the accuracy of the position. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a stereoscopic diagram of the embodiment cooperating with the bearing to be tested;

[0014] Figure 2 is a three-dimensional diagram of this embodiment;

[0015] Figure 3A three-dimensional diagram of the support seat of this embodiment;

[0016] Figure 4 is a cross-sectional view of the support seat of this embodiment;

[0017] Figure 5 An exploded view of the support seat at a first angle of this embodiment;

[0018] Figure 6 is an exploded view of the support seat at a second angle of this embodiment;

[0019] Figure 7 is a three-dimensional diagram of the support base of this embodiment;

[0020] Figure 8 2 is a cross-sectional view of the support seat of this embodiment.

[0021] In the attached figure:

[0022] 1. Inner ring test shaft; 2. Servo motor; 3. Upper lifting cylinder; 4. Support seat; 5. Ball groove; 6. Ball; 7. Outer sleeve; 8. Tooling; 9. Groove sleeve; 10. Detection rod; 11. Torque sensor; 12. Unloading plate; 13. Lower lifting cylinder; 14. Through hole; 15. Sinking trough; 16. Upper frame; 17. Longitudinal slide rail; 18. Rack; 19. Counterweight; 20. Top pulley; 21. Side pulley; 22. Connecting plate; 23. Pulley rope; 24. Bearing to be tested. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0024] See also Figure 1-8As shown, this embodiment discloses a bearing torque detection machine, including an inner ring test shaft 1 that can abut against the inner ring of the bearing to be detected, the inner ring test shaft 1 is driven by a servo motor 2, and the servo motor 2 is driven to rise and fall by an upper lifting cylinder 3, a support seat 4 is arranged directly below the inner ring test shaft 1, the top of the support seat 4 has a ball groove 5, a ball 6 is movably arranged in the ball groove 5, the top of the ball 6 leaks out of the ball groove 5, a jacket 7 is arranged above the ball groove 5, a tool 8 is arranged at the upper end of the jacket 7, and the upper end surface of the tool 8 can abut against the outer ring of the bearing to be detected Then, the outer sleeve 7, the tooling 8 and the support seat 4 are non-fixedly connected. The downward pressure of the inner ring test shaft 1 drives the outer sleeve 7 and the tooling 8 to rotate synchronously and press against the ball 6 in the ball groove 5. A gap is left between the inner ring and the upper end surface of the tooling 8. A groove sleeve 9 is provided at the bottom of the outer sleeve 7. The groove sleeve 9 can be sleeved and wrap the ball groove 5. A detection rod 10 is provided on the side wall of the outer sleeve 7. A torque sensor 11 is provided on one side of the support seat 4. When the inner ring test shaft 1 passes through the bearing to be tested, the outer sleeve 7 descends and rotates, and the bottom surface of the groove sleeve 9 abuts against the ball 6.

[0025] A discharge plate 12 is arranged above the support seat 4 in this embodiment. The discharge plate 12 is driven to rise and fall by a lower lifting cylinder 13. A through hole 14 is arranged on the discharge plate 12. Both the through hole 14 and the groove sleeve 9 are in an inverted cone shape.

[0026] like Figure 8 As shown, the upper part of the ball groove 5 is cylindrical and the lower part is conical, which can just accommodate a ball 6. In order to increase the service life of the outer sleeve 7, the bottom surface of the groove sleeve 9 in this embodiment is provided with a wear-resistant pad (not shown in the figure).

[0027] A sinking groove 15 is provided at the position of the upper end surface of the tooling 8 corresponding to the inner ring, and a gap is left between the sinking groove 15 and the inner ring. The sinking groove 15 forms a clearance cavity for the inner ring of the bearing 24 to be tested, so that when the inner ring of the bearing 24 to be tested rotates, the tooling below will not be driven to rotate due to the rotation of the inner ring.

[0028] like Figure 1 As shown, the inner ring test shaft 1 and the servo motor 2 are fixed on the upper frame 16, the upper frame 16 is slidably set on the frame 18 through the longitudinal slide rail 17, the upper lifting cylinder 3 is fixed on the frame 18, and the upper lifting cylinder 3 is connected to the upper frame 16 through the middle leakage solenoid valve. A pulley block is provided on the frame 18, and a pulley rope 23 is connected to the upper frame 16. The pulley rope 23 is wound on the pulley block and is connected and fixed to the counterweight 19. The pulley block in this embodiment includes a top pulley 20 and a side pulley 21. The top pulley 20 is fixed on the top of the frame 18, and the side pulley 21 is fixed on one side of the frame 18.

[0029] A connecting plate 22 is connected to one side of the discharge plate 12 , and the connecting plate 22 is slidably disposed on the longitudinal slide rail 17 via a slider.

[0030] The working principle of the present embodiment when detecting torque is that the upper lifting cylinder 3 drives the upper frame 16 to descend, and the inner ring test shaft 1 presses the inner ring of the bearing 24 to be detected. Then, the servo motor 2 drives the inner ring test shaft 1 to rotate, and the inner ring test shaft 1 drives the inner ring of the bearing 24 to be detected to rotate. Once there is resistance between the inner ring and the outer ring, the continuously rotating inner ring will drive the outer ring to rotate as well. Since the inner ring test shaft 1 is in a downward pressure state, the tooling 8 and the outer sleeve 7 under the outer ring are continuously in contact, driving the tooling 8 and the outer sleeve 7 to rotate together, and the detection rod 10 will rotate to the torque sensor 11. The torque sensor 11 in the present embodiment is a pressure sensor, which reads the pressure value through the background program and then converts it into torque to realize torque detection.

[0031] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A bearing torque testing machine, comprising an inner ring test shaft (1), the inner ring test shaft (1) being driven by a servo motor (2), the servo motor (2) being driven to rise and fall by an upper lifting cylinder (3), a support seat (4) being arranged directly below the inner ring test shaft (1), characterized in that: The support seat (4) has a spherical groove (5) at the top, a spherical ball (6) is movably arranged in the spherical groove (5), the top of the spherical ball (6) leaks out of the spherical groove (5), a sleeve (7) is arranged above the spherical groove (5), a tool (8) is arranged at the upper end of the sleeve (7), the upper end surface of the tool (8) can abut against the outer ring of the bearing to be tested, and a gap is left between the inner ring and the upper end surface of the tool (8), a groove sleeve (9) is arranged at the bottom of the sleeve (7), the groove sleeve (9) can be sleeved and wrap the spherical groove (5), a detection rod (10) is arranged on the side wall of the sleeve (7), and a torque sensor (11) is arranged on one side of the support seat (4), when the inner ring test shaft (1) passes through the bearing to be tested and acts on the sleeve (7) to descend and rotate, the bottom surface of the groove sleeve (9) abuts against the spherical ball (6).

2. The bearing torque detector according to claim 1, characterized in that: A discharge plate (12) is arranged above the support seat (4), and the discharge plate (12) is driven to rise and fall by a lower lifting cylinder (13). A through hole (14) is arranged on the discharge plate (12), and the through hole (14) and the groove sleeve (9) are both in an inverted cone shape.

3. The bearing torque detector according to claim 1, characterized in that: The upper part of the ball groove (5) is cylindrical, and the lower part is conical.

4. The bearing torque detector according to claim 1, characterized in that: A wear-resistant pad is arranged on the bottom surface of the groove sleeve (9).

5. The bearing torque detector according to claim 1, characterized in that: A sinking groove (15) is provided at a position on the upper end surface of the tooling (8) corresponding to the inner ring, and a gap is left between the sinking groove (15) and the inner ring.

6. The bearing torque detector according to claim 2, characterized in that: The inner ring test shaft (1) and the servo motor (2) are fixed on the upper frame (16); the upper frame (16) is slidably arranged on the frame (18) via a longitudinal slide rail (17); the upper lifting cylinder (3) is fixed on the frame (18); the upper lifting cylinder (3) is connected to the upper frame (16) via a middle drain solenoid valve; a pulley block is arranged on the frame (18); a pulley rope (23) is connected to the upper frame (16); the pulley rope (23) is wound around the pulley block and is fixedly connected to the counterweight block (19).

7. The bearing torque detector according to claim 6, characterized in that: The pulley block comprises a top pulley (20) and a side pulley (21), wherein the top pulley (20) is fixed on the top of the frame (18), and the side pulley (21) is fixed on one side of the frame (18).

8. The bearing torque detector according to claim 6, characterized in that: A connecting plate (22) is connected to one side of the discharge plate (12), and the connecting plate (22) is slidably arranged on the longitudinal slide rail (17) via a sliding block.

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