Performance testing device for precision bearing manufacturing

Abstract

The invention relates to the technical field of bearing performance testing, in particular to a precision bearing manufacturing performance testing device which comprises a motor, a detachable supporting plate is installed on a shell of the motor, the supporting plate is connected with a base through an extrusion part, a driving wheel used for driving a bearing outer ring to rotate is installed on an output shaft of the motor, and the driving wheel is connected with the motor. A vertical plate is installed on one side of the upper surface of the base, a guide hole is formed in the middle of one side face of the vertical plate, a detachable guide sleeve is installed in the guide hole, a shaft rod used for supporting a bearing is inserted in the guide sleeve, and a detachable L-shaped plate is installed at the end, close to the driving wheel, of the shaft rod. And a limiting piece used for limiting the relative position of the shaft rod and the bearing is installed on the horizontal portion of the L-shaped plate, and a horizontally-arranged electric push rod is installed on the side, away from the bearing, of the vertical plate, The driving wheel has the following beneficial effects that the situation that the surface, making contact with the bearing, of the driving wheel is uneven is prevented, and the service life of the driving wheel is prolonged.

Description

Technical Field

[0001] The invention relates to a performance testing device for precision bearing manufacturing, belonging to the technical field of bearing performance testing. Background Art

[0002] Performance testing during the bearing manufacturing process is a key step in ensuring product quality and reliability. Dynamic load testing is one of the bearing performance tests, and its purpose is to evaluate the performance and life of the bearing under dynamic working conditions. The bearing sleeve is mounted on the shaft, and then the outer ring of the bearing is brought into contact with the drive wheel driven by the motor. The motor then drives the outer ring of the bearing to rotate when it is working. The bearing is operated under a specific load and speed, and its failure time is recorded. The bearing is continuously operated under different loads and speeds to evaluate its long-term performance. In the above method, the relative position of the bearing and the drive wheel is constant. During the long-term test process, the contact area between the drive wheel and the bearing is always in the same area, so the drive wheel cannot be worn evenly, causing the annular side of the drive wheel to become uneven after a period of use, affecting the continued use of the drive wheel. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a performance testing device for precision bearing manufacturing to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned object, the present invention is realized by the following technical scheme: a performance testing device for precision bearing manufacturing, comprising a motor, a housing portion of the motor is provided with a detachable support plate, a base in sliding contact with the support plate is provided at the lower side of the support plate, the support plate is connected to the base through an extrusion piece, a driving wheel for driving the outer ring of the bearing to rotate is provided on the output shaft of the motor, a vertical plate is provided on one side of the upper surface of the base, a guide hole is provided at the middle position of one side of the vertical plate, a detachable guide sleeve is provided in the guide hole, a shaft rod for supporting the bearing is inserted in the guide sleeve, a detachable L-shaped plate is provided at one end of the shaft rod close to the driving wheel, a horizontal portion of the L-shaped plate is arranged parallel to the shaft rod, a stopper for limiting the relative position of the shaft rod and the bearing is provided on the horizontal portion of the L-shaped plate, a rectangular opening is provided at the upper position of one side surface of the vertical plate, the horizontal portion of the L-shaped plate passes through the rectangular opening, a horizontally arranged electric push rod is provided on the side of the vertical plate away from the bearing, the electric push rod is arranged between the rectangular opening and the guide hole, and the movable end of the electric push rod is connected and fixed to the horizontal portion of the L-shaped plate.

[0005] Specifically, the extrusion member includes a movable plate, a movable plate is installed at the lower position of the side of the support plate away from the driving wheel, the movable plate is in sliding contact with the base, a T-shaped slider is installed on the side of the lower surface of the movable plate away from the support plate, the upper surface of the base is provided with a T-shaped slide groove matching the T-shaped slider, the T-shaped slider is slidably installed in the T-shaped slide groove, a horizontally arranged positioning rod is installed on the side of the movable plate away from the vertical plate, a spring is sleeved on the positioning rod, a column rod is inserted into the spring on the side away from the positioning rod, and the column rod is connected and fixed to the base through an ear plate.

[0006] Specifically, a threaded hole is provided on one side of the ear plate, and an external thread is processed on the outer surface of the column rod. The column rod is threadedly connected in the threaded hole. A positioning plate for limiting the end position of the spring is provided on the side of the ear plate close to the movable plate. The positioning plate is sleeved on the column rod and connected and fixed to the column rod. A handle is connected and fixed to the end of the column rod away from the spring, and the handle is arranged perpendicular to the column rod.

[0007] Specifically, the limiting member includes a screw rod, and a strip-shaped opening is opened on the upper surface of the horizontal part of the L-shaped plate. Two vertically arranged screw rods are inserted in the strip-shaped opening. Two nuts are threadedly connected on one of the screw rods, and the two nuts on one of the screw rods are respectively arranged on the upper side and the lower side of the strip-shaped opening. A clamp for limiting the bearing position is installed at the lower ends of the two screw rods.

[0008] Specifically, screw holes are provided on two parallel sides of the vertical plate, the screw holes are communicated with the guide holes, and the inner threads of the screw holes are connected with clamping screws for limiting the relative position of the guide sleeve and the vertical plate. An arc plate is installed at the lower end of the vertical part of the L-shaped plate, and the arc plate is fitted with the shaft rod, and the arc plate is connected and fixed to the shaft rod by connecting screws.

[0009] Specifically, a connecting plate is installed at the movable end of the electric push rod, and the upper end of the connecting plate is connected and fixed to the end of the horizontal part of the L-shaped plate.

[0010] Specifically, a rubber sleeve is provided on the driving wheel, a plurality of protrusions are evenly fixed on the inner surface of the rubber sleeve, the protrusions and the rubber sleeve are an integrally formed structure, a plurality of slots matching the protrusions are equidistantly provided in an annular shape on the reversing side of the driving wheel, and the protrusions are inserted in the slots.

[0011] Specifically, a first limiting plate is provided on the side of the driving wheel close to the support plate, and the first limiting plate is connected to the driving wheel through a plurality of screws. A second limiting plate is provided on the side of the driving wheel away from the first limiting plate, and the second limiting plate is connected to the driving wheel through a plurality of screws. The first driving wheel is sleeved on the output shaft of the motor.

[0012] Specifically, a side surface of the driving wheel is provided with a plurality of through holes in an annular shape and at equal intervals, and the through holes penetrate the driving wheel.

[0013] Beneficial effects of the present invention: 1. Select a shaft of appropriate size according to the inner diameter of the bearing inner ring, and then select a guide sleeve that matches the size of the shaft, install the guide sleeve in the guide hole, and then use the connecting screws to connect the L-shaped plate and the shaft, so that it is convenient to select the corresponding shaft according to the bearing model and support different types of bearings.

[0014] 2. After the bearing sleeve is installed on the shaft, adjust the positions of the two screws along the strip-shaped opening. At this time, the two clamps are respectively located on both sides of the bearing and the clamps are in contact with the outer ring of the bearing. Then, the two nuts on the screw are used to limit the relative position of the screw and the L-shaped plate to limit the relative position of the bearing and the shaft. Because the spacing between the two clamps is adjustable and the height of the two clamps is adjustable, it can meet the needs of bearings of different models and expand the scope of application.

[0015] 3. When the motor drives the driving wheel to rotate, the driving wheel drives the bearing to rotate, controls the electric push rod to reciprocate and extend, and then the electric push rod drives the L-shaped plate to move along the rectangular opening. At this time, the shaft moves along the guide sleeve. At this time, driven by the two clamping plates, the bearing also moves with the shaft, so that the bearing contacts different parts of the driving wheel, avoiding the bearing from contacting a certain area of ​​the driving wheel, which is conducive to uniform wear of the driving wheel, preventing unevenness on the contact surface between the driving wheel and the bearing, and extending the service life of the driving wheel.

[0016] 4. A rubber sleeve is sleeved on the driving wheel, and a first limiting plate and a second limiting plate are installed on both sides of the driving wheel respectively. At this time, under the restriction of the first limiting plate and the second limiting plate, the relative position of the rubber sleeve and the driving wheel remains unchanged. Because the protrusion on the rubber sleeve is stuck in the slot on the driving wheel, the rubber sleeve will rotate with the rotation of the driving wheel. At this time, the rubber sleeve is between the bearing and the driving wheel, thereby increasing the friction coefficient between the bearing and the driving wheel. At the same time, the rubber sleeve also protects the driving wheel.

[0017] 5. Under the action of the spring rebound force, the movable plate moves toward the vertical plate, and the T-shaped slider is inserted in the T-shaped slide groove. The moving trajectory of the movable plate is limited without affecting the movement of the movable plate. At this time, the extrusion force of the spring on the movable plate will be transferred to the motor, so that the motor drives the driving wheel to move toward the shaft rod, so that the driving wheel and the bearing fit closely, and the bearing is prevented from not rotating due to insufficient extrusion force between the driving wheel and the driving wheel. The column rod is turned, and the minimum spacing between the positioning plate and the movable plate changes. The extrusion force between the driving wheel and the bearing can be adjusted as needed. At the same time, it is convenient to select springs of different lengths, expanding the range of spring selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of a performance testing device for precision bearing manufacturing of the present invention; Figure 2 A three-dimensional diagram of a performance testing device for precision bearing manufacturing according to the present invention from another perspective; Figure 3 It is a schematic diagram of the assembly of a rubber sleeve and a driving wheel in a performance testing device for precision bearing manufacturing of the present invention; Figure 4 A three-dimensional diagram of a driving wheel in a performance testing device for precision bearing manufacturing according to the present invention; Figure 5 It is a schematic diagram of the assembly of a spring, a column rod, a lug plate, a support plate and a movable plate in a performance testing device for precision bearing manufacturing of the present invention; Figure 6 A three-dimensional diagram of a vertical plate in a performance testing device for precision bearing manufacturing according to the present invention; In the figure: 1. motor, 2. movable plate, 3. base, 4. T-shaped slide, 5. ear plate, 6. column rod, 7. handle, 8. positioning plate, 9. spring, 10. first limiting plate, 11. rubber sleeve, 12. L-shaped plate, 13. strip mouth, 14. screw, 15. nut, 16. clamping plate, 17. shaft rod, 18. second limiting plate, 19. electric push rod, 20. connecting plate, 21. guide sleeve, 22. clamping screw, 23. vertical plate, 24. slot, 25. connecting screw, 26. arc plate, 27. T-shaped slider, 28. positioning rod, 29. support plate, 30. bump, 31. guide hole, 32. rectangular mouth, 33. driving wheel, 34. through hole. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] See also Figure 1-Figure 5The present invention provides a technical solution: a performance testing device for precision bearing manufacturing, comprising a motor 1, a housing portion of the motor 1 is provided with a detachable support plate 29, a base 3 that is in sliding contact with the support plate 29 is provided on the lower side of the support plate 29, a movable plate 2 is provided at the lower position of a side of the support plate 29 away from the driving wheel 33, the movable plate 2 is in sliding contact with the base 3, a T-shaped slider 27 is provided on the side of the lower surface of the movable plate 2 away from the support plate 29, a T-shaped slide groove 4 that matches the T-shaped slider 27 is provided on the upper surface of the base 3, the T-shaped slider 27 is slidably installed in the T-shaped slide groove 4, a horizontally arranged positioning rod 28 is provided on the side of the movable plate 2 away from the vertical plate 23, a spring 9 is sleeved on the positioning rod 28, a column 6 is inserted on the side of the spring 9 away from the positioning rod 28, the column 6 is connected and fixed to the base 3 through an ear plate 5, a threaded hole is provided on one side of the ear plate 5, an external thread is processed on the outer surface of the column 6, the column 6 is threadedly connected in the threaded hole, and the ear plate 5 is close to the side of the movable plate 2 The lever 6 is provided with a positioning plate 8 for limiting the end position of the spring 9, the positioning plate 8 is sleeved on the column rod 6 and connected and fixed with the column rod 6, and the end of the column rod 6 away from the spring 9 is connected and fixed with a handle 7, and the handle 7 is arranged perpendicular to the column rod 6. Under the action of the spring 9 rebound force, the movable plate 2 moves in the direction of the vertical plate 23, so that the T-shaped slider 27 is inserted in the T-shaped slide groove 4, and the moving trajectory of the movable plate 2 is limited without affecting the movement of the movable plate 2. At this time, the extrusion force of the spring 9 applied to the movable plate 2 will be transferred to the motor 1, so that the motor 1 drives the driving wheel 33 to move in the direction of the shaft rod 17, which is convenient for making the driving wheel 33 fit closely with the bearing to prevent the bearing from not rotating due to insufficient extrusion force between the driving wheel 33 and the driving wheel 33. By twisting the column rod 6, the minimum spacing between the positioning plate 8 and the movable plate 2 changes, so that the extrusion force between the driving wheel 33 and the bearing can be adjusted as needed, and at the same time, it is convenient to select springs 9 of different lengths to expand the selection range of springs 9.

[0021] See also Figure 1-Figure 4 , Figure 6A driving wheel 33 for driving the outer ring of the bearing to rotate is installed on the output shaft of the motor 1. A plurality of through holes 34 penetrating the driving wheel 33 are equidistantly provided on one side of the driving wheel 33 in a circular shape. A vertical plate 23 is installed on one side of the upper surface of the base 3. A guide hole 31 is provided in the middle of one side of the vertical plate 23. A detachable guide sleeve 21 is installed in the guide hole 31. Screw holes are provided on two parallel sides of the vertical plate 23. The screw holes are connected to the guide holes 31. A clamping screw 22 for limiting the relative position of the guide sleeve 21 and the vertical plate 23 is threadedly connected in the screw holes. A shaft rod 17 for supporting the bearing is inserted in the guide sleeve 21. The shaft rod 17 is close to the driving wheel A detachable L-shaped plate 12 is installed at one end of 33, and the horizontal part of the L-shaped plate 12 is arranged parallel to the shaft rod 17. An arc plate 26 is installed at the lower end of the vertical part of the L-shaped plate 12, and the arc plate 26 fits with the shaft rod 17. The arc plate 26 is connected and fixed to the shaft rod 17 by connecting screws 25. A shaft rod 17 of a suitable size is selected according to the size of the inner diameter of the inner ring of the bearing, and then a guide sleeve 21 matching the size of the shaft rod 17 is selected, so that the guide sleeve 21 is installed in the guide hole 31, and then the L-shaped plate 12 and the shaft rod 17 are connected by connecting screws 25, so as to facilitate the selection of the corresponding shaft rod 17 according to the model of the bearing, so as to support bearings of different models.

[0022] See also Figure 1 and Figure 2 A strip opening 13 is provided on the upper surface of the horizontal portion of the L-shaped plate 12, and two vertically arranged screw rods 14 are inserted in the strip opening 13. Two nuts 15 are threadedly connected to one screw rod 14, and the two nuts 15 on one screw rod 14 are respectively arranged on the upper side and the lower side of the strip opening 13. Clamps 16 for limiting the position of the bearing are installed at the lower ends of the two screw rods 14. After the bearing sleeve is arranged on the shaft rod 17, the positions of the two screw rods 14 are adjusted along the strip opening 13. At this time, the two clamps 16 are respectively located on both sides of the bearing and the clamps 16 are in contact with the outer ring of the bearing. Then, the two nuts 15 on the screw rod 14 are used to limit the relative position of the screw rod 14 and the L-shaped plate 12, so as to limit the relative position of the bearing and the shaft rod 17. Because the spacing between the two clamps 16 is adjustable and the height of the two clamps 16 is adjustable, it is suitable for different types of bearings and expands the scope of application.

[0023] See also Figure 1-Figure 6A rectangular opening 32 is provided at the upper position of one side surface of the vertical plate 23, and the horizontal portion of the L-shaped plate 12 passes through the rectangular opening 32. A horizontally arranged electric push rod 19 is installed on the side of the vertical plate 23 away from the bearing. The electric push rod 19 is arranged between the rectangular opening 32 and the guide hole 31. The movable end of the electric push rod 19 is connected and fixed to the horizontal portion of the L-shaped plate 12, that is, a connecting plate 20 is installed at the movable end of the electric push rod 19, and the upper end of the connecting plate 20 is connected and fixed to the end of the horizontal portion of the L-shaped plate 12. When the motor 1 drives the driving wheel 33 to rotate, the driving wheel 33 drives the bearing Rotate to control the electric push rod 19 to reciprocate and extend, and then the electric push rod 19 drives the L-shaped plate 12 to move along the rectangular opening 32. At this time, the shaft rod 17 moves along the guide sleeve 21. At this time, driven by the two clamping plates 16, the bearing also moves with the shaft rod 17, so that the bearing contacts different parts of the driving wheel 33, avoiding the bearing from contacting a certain area of ​​the driving wheel 33, which is beneficial to the uniform wear of the driving wheel 33, preventing the surface of the driving wheel 33 contacting the bearing from being uneven, and extending the service life of the driving wheel 33.

[0024] See also Figure 1-Figure 4 A rubber sleeve 11 is sleeved on the driving wheel 33, and a plurality of protrusions 30 are evenly fixed on the inner surface of the rubber sleeve 11. The protrusions 30 and the rubber sleeve 11 are an integrally formed structure. A plurality of slots 24 matching the protrusions 30 are equidistantly provided in an annular shape on the reversing side of the driving wheel 33. The protrusions 30 are inserted into the slots 24. A first limiting plate 10 is provided on the side of the driving wheel 33 close to the support plate 29. The first limiting plate 10 is connected to the driving wheel 33 through a plurality of screws. A second limiting plate 18 is provided on the side of the driving wheel 33 away from the first limiting plate 10. The second limiting plate 18 is connected to the driving wheel 33 through a plurality of screws. The first driving wheel 33 is sleeved on On the output shaft of the motor 1, a rubber sleeve 11 is sleeved on the driving wheel 33, and a first limiting plate 10 and a second limiting plate 18 are respectively installed on both sides of the driving wheel 33. At this time, under the restriction of the first limiting plate 10 and the second limiting plate 18, the relative position of the rubber sleeve 11 and the driving wheel 33 remains unchanged. Because the protrusion 30 on the rubber sleeve 11 is stuck in the slot 24 on the driving wheel 33, the rubber sleeve 11 will rotate with the rotation of the driving wheel 33. At this time, the rubber sleeve 11 is between the bearing and the driving wheel 33, thereby increasing the friction coefficient between the bearing and the driving wheel 33. At the same time, the rubber sleeve 11 also plays a role in protecting the driving wheel 33.

[0025] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A performance testing device for precision bearing manufacturing, comprising a motor (1), characterized in that: The housing of the motor (1) is provided with a detachable support plate (29), the lower side of the support plate (29) is provided with a base (3) in sliding contact with the support plate (29), the support plate (29) is connected to the base (3) via an extrusion piece, the output shaft of the motor (1) is provided with a driving wheel (33) for driving the outer ring of the bearing to rotate, a vertical plate (23) is provided on one side of the upper surface of the base (3), a guide hole (31) is provided in the middle of one side of the vertical plate (23), a detachable guide sleeve (21) is provided in the guide hole (31), a shaft (17) for supporting the bearing is inserted in the guide sleeve (21), the shaft (17) is close to the driving shaft A detachable L-shaped plate (12) is installed at one end of the wheel (33); the horizontal portion of the L-shaped plate (12) is arranged parallel to the shaft (17); the horizontal portion of the L-shaped plate (12) is installed with a limiter for limiting the relative position of the shaft (17) and the bearing; a rectangular opening (32) is opened at the upper position of one side surface of the vertical plate (23); the horizontal portion of the L-shaped plate (12) passes through the rectangular opening (32); a horizontally arranged electric push rod (19) is installed on the side of the vertical plate (23) away from the bearing; the electric push rod (19) is arranged between the rectangular opening (32) and the guide hole (31); and the movable end of the electric push rod (19) is connected and fixed to the horizontal portion of the L-shaped plate (12).

2. A performance testing device for precision bearing manufacturing according to claim 1, characterized in that: The extrusion member comprises a movable plate (2), the movable plate (2) being installed at a lower position of a side of the support plate (29) away from the driving wheel (33), the movable plate (2) being in sliding contact with the base (3), a T-shaped slider (27) being installed on a side of the lower surface of the movable plate (2) away from the support plate (29), a T-shaped slide groove (4) cooperating with the T-shaped slide groove (27) being provided on an upper surface of the base (3), the T-shaped slide groove (27) being slidably installed in the T-shaped slide groove (4), a horizontally arranged positioning rod (28) being installed on a side of the movable plate (2) away from the vertical plate (23), a spring (9) being sleeved on the positioning rod (28), a column rod (6) being inserted in a side of the spring (9) away from the positioning rod (28), the column rod (6) being connected and fixed to the base (3) through an ear plate (5).

3. A performance testing device for precision bearing manufacturing according to claim 2, characterized in that: A threaded hole is formed on one side of the ear plate (5), and an external thread is formed on the outer surface of the column rod (6). The column rod (6) is threadedly connected in the threaded hole. A positioning plate (8) for limiting the end position of the spring (9) is provided on the side of the ear plate (5) close to the movable plate (2). The positioning plate (8) is sleeved on the column rod (6) and connected and fixed to the column rod (6). A handle (7) is connected and fixed to the end of the column rod (6) away from the spring (9). The handle (7) is arranged perpendicular to the column rod (6).

4. A performance testing device for precision bearing manufacturing according to claim 1, characterized in that: The limiting member comprises a screw rod (14), a strip-shaped opening (13) is provided on the upper surface of the horizontal portion of the L-shaped plate (12), two vertically arranged screw rods (14) are inserted in the strip-shaped opening (13), two nuts (15) are threadedly connected to one of the screw rods (14), the two nuts (15) on one of the screw rods (14) are respectively arranged on the upper side of the strip-shaped opening (13) and the lower side of the strip-shaped opening (13), and a clamping plate (16) for limiting the bearing position is installed at the lower ends of the two screw rods (14).

5. A performance testing device for precision bearing manufacturing according to claim 1, characterized in that: The vertical plate (23) has two parallel side surfaces with screw holes, the screw holes are connected to the guide hole (31), the screw holes are internally threaded with clamping screws (22) for limiting the relative position of the guide sleeve (21) and the vertical plate (23), and an arc plate (26) is installed at the lower end of the vertical portion of the L-shaped plate (12), the arc plate (26) is in contact with the shaft (17), and the arc plate (26) is connected and fixed to the shaft (17) by connecting screws (25).

6. A performance testing device for precision bearing manufacturing according to claim 1, characterized in that: A connecting plate (20) is installed at the movable end of the electric push rod (19), and the upper end of the connecting plate (20) is connected and fixed to the end of the horizontal portion of the L-shaped plate (12).

7. A performance testing device for precision bearing manufacturing according to claim 1, characterized in that: The driving wheel (33) is sleeved with a rubber sleeve (11), a plurality of protrusions (30) are evenly fixed on the inner surface of the rubber sleeve (11), the protrusions (30) and the rubber sleeve (11) are an integrally formed structure, and a plurality of slots (24) matching the protrusions (30) are equidistantly provided in an annular shape on the reversing side surface of the driving wheel (33), the protrusions (30) being inserted into the slots (24).

8. A performance testing device for precision bearing manufacturing according to claim 7, characterized in that: A first limiting plate (10) is provided on a side of the driving wheel (33) close to the support plate (29), the first limiting plate (10) being connected to the driving wheel (33) via a plurality of screws, a second limiting plate (18) is provided on a side of the driving wheel (33) away from the first limiting plate (10), the second limiting plate (18) being connected to the driving wheel (33) via a plurality of screws, and the first driving wheel (33) being sleeved on an output shaft of the motor (1).

9. A performance testing device for precision bearing manufacturing according to claim 1, characterized in that: A plurality of through holes (34) are formed in an annular shape and equidistantly on one side of the driving wheel (33), and the through holes (34) penetrate the driving wheel (33).

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