Full-automatic hardness detector for double-row bearing

Abstract

The invention relates to the field of hardness detection facilities, in particular to a full-automatic hardness detector for double-row bearings, which comprises a base, a centering roller is fixedly mounted in the middle of the upper end of the base, the outer surface of the centering roller extends to form key teeth, a bearing shaft is coaxially arranged on the side of the centering roller, and the bearing shaft is coaxially connected with the centering roller. The edge of the upper end of the bearing shaft extends to form a protruding base, a guide column is fixedly installed on the upper end face of the protruding base, a pressing base is elastically installed on the outer surface of the guide column, a locking piece is arranged between the pressing base and the guide column, two arc-shaped columns are symmetrically and fixedly installed at the lower end of the pressing base, and the circle centers of the arc-shaped columns and the circle center of the centering roller are collinear. The rear edge of the upper end of the machine base is provided with a detection piece. According to the invention, the use convenience is improved, the hardness detection accuracy is also improved, and the normal operation of the detection operation is ensured.

Description

Technical Field

[0001] The invention relates to the field of hardness testing facilities, and in particular to a full-automatic hardness testing machine for double-row bearings. Background Art

[0002] Bearings are vital parts in mechanical equipment. Their main function is to support the mechanical rotating body to reduce the mechanical load friction coefficient of the equipment during the transmission process. Double-row bearings refer to rolling bearings with two rows of rolling elements along the circumferential direction. They are widely used because of their large load-bearing capacity.

[0003] The groove of the inner ring of the double-row bearing mainly serves to provide a space for the spherical rolling element to move. The hardness of the groove directly affects the service life of the bearing. Therefore, it is often necessary to test the hardness of the groove of the inner ring of the double-row bearing during production. However, the existing testing facilities usually fix the inner ring of the double-row bearing by threaded clamping during testing. The fixing process requires frequent rotation, which is quite cumbersome and inconvenient to use. In addition, since there are two grooves in the inner ring of the double-row bearing, it is difficult to ensure that the bottom of the groove is directly below the detection end after fixing. As a result, during the subsequent impact test, the impact force cannot fully act on the groove, which seriously affects the accuracy of the hardness test. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a fully automatic hardness testing machine for double-row bearings.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a fully automatic hardness testing machine for double-row bearings, comprising a machine base, a centering roller is fixedly installed in the middle of the upper end of the machine base, key teeth are extended from the outer surface of the centering roller, a load-bearing shaft is coaxially arranged on the side of the centering roller, a boss is extended at the upper end edge of the load-bearing shaft, a guide column is fixedly installed on the upper end surface of the boss, a pressure seat is elastically installed on the outer surface of the guide column, a locking piece is arranged between the pressure seat and the guide column, two arc columns are symmetrically fixedly installed on the lower end of the pressure seat, the center of the arc column is colinear with the center of the centering roller, a detection piece is installed at the rear edge of the upper end of the machine base, a flip piece is installed at the end of the load-bearing shaft, and the flip piece is connected to the detection piece.

[0006] Preferably, a ridge extends from the outer surface of the guide column, the pressure seat is slidably installed on the outer surface of the ridge, a compression spring is wound around the outer side of the guide column, the lower end of the compression spring is fixed to the upper end of the pressure seat, and the upper end of the compression spring is fixed to the upper end of the guide column.

[0007] Preferably, the locking member includes a column sleeve fixedly mounted on the side of the pressure seat, a locking pin is coaxially and elastically mounted inside the column sleeve, two ends of the locking pin pass through both sides of the column sleeve, one end of the locking pin slides through the side of the pressure seat, a locking hole is provided on the outer surface of the guide column, and one end of the locking pin is inserted into the interior of the locking hole.

[0008] Preferably, a pin cap is coaxially inlaid on the outer surface of the locking pin, and the pin cap is slidably installed inside the column sleeve. A fixing spring is wound around the outer side of the locking pin, one end of the fixing spring is fixed to the pin cap, and the other end of the fixing spring is fixed to the inner side of the column sleeve.

[0009] Preferably, the detection component includes two guide rods symmetrically fixedly installed at the rear edge of the upper end of the machine base, a bearing seat is embedded between the upper ends of the two guide rods, a threaded rod is rotatably installed through the middle of the bearing seat, a pressure plate is screwed on the outer surface of the threaded rod, and sliding sleeves are slidably installed on the outer surfaces of the two guide rods, the sliding sleeves are fixed to the pressure plate, and the lower end of the threaded rod is connected to a servo motor, and the servo motor is fixed to the machine base.

[0010] Preferably, a directional column is slidably installed through the end of the pressure plate, a column seat is coaxially fixedly installed on the lower end of the directional column, a detection cone column extends from the middle of the lower end of the column seat, the detection end of the detection cone column corresponds to the center of the arc column and the center of the centering roller, an impact spring is wound around the outside of the directional column, one end of the impact spring is fixed to the upper end of the column seat, and the other end of the impact spring is fixed to the lower end of the pressure plate, and a detection platform is fixedly installed at the front end of the two guide rods.

[0011] Preferably, the upper end of the directional column is coaxially inlaid with an anti-drop cap, and the anti-drop cap is fitted to the upper end of the pressure plate. The side of the detection platform is hollowed out to open a bearing cavity, and a servo push cylinder is fixedly installed inside the bearing cavity. A guide block is inlaid inside the bearing cavity, and the output end of the servo push cylinder slides through the inside of the guide block. A U-shaped claw is fixedly installed on the output end of the servo push cylinder, and the U-shaped claw is fitted to the lower end of the column seat.

[0012] Preferably, the flipping member includes a gear coaxially embedded in the end of the load-bearing shaft, the lower part of the gear is meshed with a tooth plate, the end of the tooth plate is rotatably mounted with a push frame, the end of the push frame is rotatably mounted with a pressure frame, the end of the pressure frame is embedded with a connecting frame, the end of the connecting frame is fixed to the pressure plate, shaft frames are provided on both sides of the gear, the shaft frames are rotatably mounted on the load-bearing shaft, the lower end of the shaft frames is fixed to the machine base, guide ears are extended from the opposite surfaces of the two shaft frames, guide grooves are opened on both sides of the tooth plate, and the guide ears are slidably mounted inside the guide grooves.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Lift the pressure seat to move the arc column upward, and then put the inner ring of the double-row bearing on the centering roller. At this time, the key teeth are engaged in the keyway of the inner ring of the double-row bearing to prevent the inner ring of the double-row bearing from rotating. Then release the lifted pressure seat, and under the push of the clamping spring, press the arc column into the groove on the inner ring of the double-row bearing. At this time, the locking pin is pushed into the lock hole on the guide column under the push of the fixing spring to lock the downward pressure seat, so that the arc column remains fixed in the groove to prevent the inner ring of the double-row bearing from moving left and right, thereby fixing the inner ring of the double-row bearing. The fixing process avoids frequent rotation and effectively improves the convenience of use. At the same time, under the action of the arc column, it can be accurately positioned according to the groove position of the inner ring of the double-row bearing, so that the detection end of the detection cone column can be aligned with the bottom of the groove for impact detection, thereby improving the accuracy of hardness detection.

[0015] 2. When the pressure plate moves downward for hardness testing, the pressure frame will be driven and move downward synchronously. At this time, the push frame is driven by the pressure frame to push the tooth plate to move horizontally, thereby driving the gear to rotate, and then driving the arc column on the load-bearing shaft to rotate, so that the arc column rotates in the groove of the inner ring of the double-row bearing to break away from the bottom of the detection cone column, so that the groove position of the inner ring of the double-row bearing to be tested can be fully exposed to avoid being blocked, thereby ensuring the normal progress of the detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a fully automatic hardness testing machine for double-row bearings of the present invention;

[0017] Figure 2 It is a schematic diagram of a centering roller of a fully automatic hardness testing machine for double-row bearings of the present invention;

[0018] Figure 3 This is an internal view of a testing platform of a fully automatic hardness testing machine for double-row bearings of the present invention;

[0019] Figure 4 The invention is a fully automatic hardness testing machine for double-row bearings. Figure 2 A magnified view of middle;

[0020] Figure 5 It is a cross-sectional view of a column sleeve of a fully automatic hardness testing machine for double-row bearings of the present invention;

[0021] Figure 6 This is a usage view of a fully automatic hardness testing machine for double-row bearings of the present invention.

[0022] In the figure: 1, machine base; 2, detection table; 3, pressure plate; 4, connecting frame; 5, pressure frame; 6, bearing shaft; 7, shaft frame; 8, centering roller; 9, guide column; 10, servo push cylinder; 11, guide block; 12, bearing cavity; 13, U-shaped claw; 14, detection cone column; 15, column seat; 16, impact spring; 17, directional column; 18, anti-drop cap; 19, lock hole; 20, threaded rod; 21, bearing seat; 22, sliding sleeve; 23, guide rod; 24, servo motor; 25, convex seat; 26, push frame; 27, gear; 28, tooth plate; 29, guide groove; 30, guide ear; 31, key tooth; 32, arc column; 33, pressure seat; 34, convex ridge; 35, clamping spring; 36, fixing spring; 37, column sleeve; 38, pin cap; 39, locking pin; 40, double-row bearing inner ring. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] like Figure 1-Figure 6 The fully automatic hardness testing machine for double-row bearings shown in the figure comprises a machine base 1, a centering roller 8 is fixedly installed in the middle of the upper end of the machine base 1, the centering roller 8 plays the role of supporting and positioning the inner ring 40 of the double-row bearing, a key tooth 31 is extended from the outer surface of the centering roller 8, the key tooth 31 plays the role of preventing the inner ring 40 of the double-row bearing from rotating, a bearing shaft 6 is coaxially arranged on the side of the centering roller 8, a boss 25 is extended at the upper end edge of the bearing shaft 6, a guide column 9 is fixedly installed on the upper end surface of the boss 25, the boss 25 plays the role of connecting the guide column 9, the bearing shaft 6 plays the role of driving the pressure seat 33 to rotate, the outer surface of the guide column 9 is elastically installed with the pressure seat 33, the guide column 9 plays the role of guiding the pressure seat 33 A locking piece is provided between the pressure seat 33 and the guide column 9. Two arc columns 32 are symmetrically fixedly installed at the lower end of the pressure seat 33. The center of the arc column 32 is colinear with the center of the centering roller 8, so that the arc column 32 can fully fit in the groove of the double-row bearing inner ring 40. The arc column 32 can accurately locate the groove position of the double-row bearing inner ring 40, so that the detection end of the detection cone column 14 can be aligned with the bottom of the groove, so that the end of the detection cone column 14 can act vertically on the groove when impacting, so that its impact force can fully act on the groove to ensure the accuracy of hardness detection. A detection component is installed at the rear edge of the upper end of the machine base 1, and a flip component is installed at the end of the load-bearing shaft 6, and the flip component is connected to the detection component.

[0025] A ridge 34 extends from the outer surface of the guide column 9, and the pressure seat 33 is slidably installed on the outer surface of the ridge 34. The ridge 34 prevents the pressure seat 33 from rotating. A compression spring 35 is wound around the outer side of the guide column 9. The lower end of the compression spring 35 is fixed to the upper end of the pressure seat 33. The compression spring 35 presses the arc column 32 into the groove of the double-row bearing inner ring 40. The upper end of the compression spring 35 is fixed to the upper end of the guide column 9.

[0026] The locking member includes a column sleeve 37 fixedly mounted on the side of the pressure seat 33, and a locking pin 39 is coaxially and elastically mounted inside the column sleeve 37. The column sleeve 37 serves to support the locking pin 39. Both ends of the locking pin 39 extend through both sides of the column sleeve 37, and one end of the locking pin 39 slides through the side of the pressure seat 33. A locking hole 19 is provided on the outer surface of the guide column 9, and one end of the locking pin 39 is inserted into the locking hole 19. The locking pin 39 is inserted into the locking hole 19, which can fix the pressure seat 33 so that the arc column 32 is always located in the groove of the inner ring 40 of the double-row bearing.

[0027] A pin cap 38 is coaxially inlaid on the outer surface of the locking pin 39, and the pin cap 38 is slidably installed inside the column sleeve 37. The pin cap 38 plays the role of being pushed by the fixing spring 36. A fixing spring 36 is wrapped around the outer side of the locking pin 39, and one end of the fixing spring 36 is fixed to the pin cap 38. The fixing spring 36 can push the locking pin 39 out so that the locking pin 39 is inserted into the locking hole 19. The other end of the fixing spring 36 is fixed to the inner side of the column sleeve 37.

[0028] The detection part includes two guide rods 23 symmetrically fixedly installed at the rear edge of the upper end of the machine base 1. The guide rods 23 and the sliding sleeve 22 play a role in guiding the pressure plate 3. A bearing seat 21 is embedded between the upper ends of the two guide rods 23. A threaded rod 20 is rotatably installed through the middle of the bearing seat 21. The bearing seat 21 plays a role in supporting the threaded rod 20. The outer surface of the threaded rod 20 is screwed with the pressure plate 3. The threaded rod 20 can drive the pressure plate 3 to move to press the impact spring 16. The outer surfaces of the two guide rods 23 are slidably installed with sliding sleeves 22. The sliding sleeves 22 are fixed to the pressure plate 3. The lower end of the threaded rod 20 is connected to a servo motor 24. The servo motor 24 is fixed to the machine base 1, and the servo motor 24 plays a role in driving the threaded rod 20 to rotate.

[0029] An directional column 17 is slidably installed through the end of the pressure plate 3, and a column seat 15 is coaxially fixedly installed at the lower end of the directional column 17. The directional column 17 plays a role in guiding the detection cone column 14. A detection cone column 14 is extended from the middle part of the lower end of the column seat 15. The detection end of the detection cone column 14 corresponds to the center of the arc column 32 and the center of the centering roller 8, so that the arc column 32 and the centering roller 8 can position the double-row bearing inner ring 40. The bottom of the groove of the double-row bearing inner ring 40 can be located directly below the detection end of the detection cone column 14. An impact spring 16 is wound around the outer side of the directional column 17, one end of the impact spring 16 is fixed to the upper end of the column seat 15, and the other end of the impact spring 16 is fixed to the lower end of the pressure plate 3. The impact spring 16 can drive the detection cone column 14 to move to impact the bottom of the groove of the double-row bearing inner ring 40. The front ends of the two guide rods 23 are fixedly installed with the detection platform 2.

[0030] The upper end of the directional column 17 is coaxially inlaid with an anti-slip cap 18, which is affixed to the upper end of the pressure plate 3. The anti-slip cap 18 prevents the directional column 17 and the pressure plate 3 from separating. The side of the testing platform 2 is hollowed out to open a bearing cavity 12, and a servo push cylinder 10 is fixedly installed inside the bearing cavity 12. The bearing cavity 12 serves to accommodate the servo push cylinder 10. A guide block 11 is inlaid inside the bearing cavity 12. The guide block 11 serves to increase the bearing capacity of the output end of the servo push cylinder 10. The output end of the servo push cylinder 10 slides through the inside of the guide block 11. A U-shaped claw 13 is fixedly installed at the output end of the servo push cylinder 10. The U-shaped claw 13 is affixed to the lower end of the column seat 15, and the U-shaped claw 13 supports the column seat 15.

[0031] The flip member includes a gear 27 coaxially embedded in the end of the load-bearing shaft 6, and a tooth plate 28 is meshed at the lower part of the gear 27. The gear 27 and the tooth plate 28 play a role in driving the load-bearing shaft 6 to rotate. A push frame 26 is rotatably installed at the end of the tooth plate 28, and a press frame 5 is rotatably installed at the end of the push frame 26. The press frame 5 can drive the push frame 26 to move to push the tooth plate 28. The end of the press frame 5 is embedded with a connecting frame 4, and the end of the connecting frame 4 is fixed to the pressing plate 3. The connecting frame 4 plays a role in The pressure plate 3 and the pressure frame 5 are fixed together. Shaft frames 7 are provided on both sides of the gear 27. The shaft frames 7 are rotatably installed on the load-bearing shaft 6. The lower end of the shaft frame 7 is fixed to the machine base 1. The shaft frame 7 supports the load-bearing shaft 6. Guide ears 30 are extended from the opposite surfaces of the two shaft frames 7. Guide grooves 29 are provided on both sides of the tooth plate 28. The guide ears 30 are slidably installed inside the guide grooves 29. The guide ears 30 and the guide grooves 29 serve to horizontally guide the tooth plate 28.

[0032] During the inspection, the locking pin 39 is pulled out of the locking hole 19 and pushed upward to move the arc column 32 on the pressure seat 33 upward, and then the double-row bearing inner ring 40 is sleeved on the centering roller 8. At this time, the key teeth 31 are engaged in the keyway of the double-row bearing inner ring 40 to prevent the double-row bearing inner ring 40 from rotating. Then, the lifted pressure seat 33 is released, and the arc column 32 is pressed into the groove on the double-row bearing inner ring 40 under the push of the compression spring 35. At this time, the locking pin 39 is fixed on the fixing spring 36. The push is pushed into the locking hole 19 on the guide column 9 to lock the downwardly moved pressure seat 33, so that the arc column 32 remains fixed in the groove to prevent the double-row bearing inner ring 40 from moving left and right, thereby fixing the double-row bearing inner ring 40. At the same time, under the restriction of the arc column 32, the groove bottom of the double-row bearing inner ring 40 can be placed just below the detection end of the detection cone column 14, and then the servo motor 24 works to drive the threaded rod 20 to rotate, so that the pressure seat screwed on the threaded rod 20 The plate 3 moves downward to press the impact spring 16 to shrink the impact spring 16. At the same time, the pressure frame 5 is driven by the pressure plate 3 to move downward synchronously. At this time, the push frame 26 is driven by the pressure frame 5 to push the toothed plate 28 to move horizontally, thereby driving the gear 27 to rotate, and then driving the arc column 32 on the load-bearing shaft 6 to rotate, so that the arc column 32 rotates in the groove of the double-row bearing inner ring 40 to disengage from the bottom of the detection cone column 14, so that the groove position to be detected of the double-row bearing inner ring 40 can be fully exposed. Then the servo push cylinder 10 drives the U-shaped claw 13 to disengage from the bottom of the column seat 15. At this time, the contracted impact spring 16 is released to push the column seat 15, so that the detection cone column 14 on the column seat 15 can impact the bottom of the groove of the double-row bearing inner ring 40. If a pit appears at the bottom of the groove of the double-row bearing inner ring 40, it means that the hardness is poor. On the contrary, if no pit appears at the bottom of the groove of the double-row bearing inner ring 40, it means that the hardness is qualified.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A fully automatic hardness testing machine for double-row bearings, comprising a machine base (1), characterized in that: A centering roller (8) is fixedly mounted at the middle of the upper end of the machine base (1), and a key tooth (31) extends from the outer surface of the centering roller (8). A bearing shaft (6) is coaxially arranged on the side of the centering roller (8), and a convex seat (25) extends from the upper edge of the bearing shaft (6). A guide column (9) is fixedly mounted on the upper end surface of the convex seat (25), and a pressure seat (33) is elastically mounted on the outer surface of the guide column (9). A locking member is arranged between the pressure seat (33) and the guide column (9), and two arc columns (32) are symmetrically fixedly mounted at the lower end of the pressure seat (33), and the center of the arc column (32) is colinear with the center of the centering roller (8). A detection member is installed at the rear edge of the upper end of the machine base (1), and a flip member is installed at the end of the bearing shaft (6), and the flip member is connected to the detection member.

2. The fully automatic hardness testing machine for double-row bearings according to claim 1, characterized in that: A ridge (34) extends from the outer surface of the guide column (9), the pressure seat (33) is slidably mounted on the outer surface of the ridge (34), a compression spring (35) is wound around the outer side of the guide column (9), the lower end of the compression spring (35) is fixed to the upper end of the pressure seat (33), and the upper end of the compression spring (35) is fixed to the upper end of the guide column (9).

3. The fully automatic hardness testing machine for double-row bearings according to claim 1, characterized in that: The locking member comprises a column sleeve (37) fixedly mounted on the side of the pressure seat (33), a locking pin (39) being coaxially elastically mounted inside the column sleeve (37), two ends of the locking pin (39) extending through two sides of the column sleeve (37), one end of the locking pin (39) slidingly passing through the side of the pressure seat (33), a locking hole (19) being formed on the outer surface of the guide column (9), and one end of the locking pin (39) being inserted into the inside of the locking hole (19).

4. The fully automatic hardness testing machine for double-row bearings according to claim 3 is characterized in that: The outer surface of the locking pin (39) is coaxially inlaid with a pin cap (38), and the pin cap (38) is slidably mounted inside the column sleeve (37). A fixing spring (36) is wound around the outer side of the locking pin (39), one end of the fixing spring (36) is fixed to the pin cap (38), and the other end of the fixing spring (36) is fixed to the inner side surface of the column sleeve (37).

5. The fully automatic hardness testing machine for double-row bearings according to claim 1, characterized in that: The detection component comprises two guide rods (23) symmetrically fixedly mounted at the rear edge of the upper end of the machine base (1); a bearing seat (21) is embedded between the upper ends of the two guide rods (23); a threaded rod (20) is rotatably mounted through the middle of the bearing seat (21); a pressure plate (3) is screwed onto the outer surface of the threaded rod (20); a sliding sleeve (22) is slidably mounted on the outer surface of the two guide rods (23); the sliding sleeve (22) is fixed to the pressure plate (3); the lower end of the threaded rod (20) is connected to a servo motor (24); and the servo motor (24) is fixed to the machine base (1).

6. The fully automatic hardness testing machine for double-row bearings according to claim 5, characterized in that: An directional column (17) is slidably installed through the end of the pressure plate (3), a column seat (15) is coaxially fixedly installed on the lower end of the directional column (17), a detection cone column (14) extends from the middle of the lower end of the column seat (15), the detection end of the detection cone column (14) corresponds to the center of the arc column (32) and the center of the centering roller (8), an impact spring (16) is wound around the outer side of the directional column (17), one end of the impact spring (16) is fixed to the upper end of the column seat (15), and the other end of the impact spring (16) is fixed to the lower end of the pressure plate (3), and the front ends of the two guide rods (23) are fixedly installed with a detection table (2).

7. The fully automatic hardness testing machine for double-row bearings according to claim 6, characterized in that: The upper end of the directional column (17) is coaxially inlaid with an anti-drop cap (18), and the anti-drop cap (18) is fitted to the upper end of the pressure plate (3). The side of the detection platform (2) is hollowed out to form a bearing cavity (12), and a servo push cylinder (10) is fixedly installed inside the bearing cavity (12). A guide block (11) is inlaid inside the bearing cavity (12), and the output end of the servo push cylinder (10) slides through the inside of the guide block (11). A U-shaped claw (13) is fixedly installed at the output end of the servo push cylinder (10), and the U-shaped claw (13) is fitted to the lower end of the column seat (15).

8. The fully automatic hardness testing machine for double-row bearings according to claim 5, characterized in that: The flip member comprises a gear (27) coaxially embedded in the end of the bearing shaft (6), the lower part of the gear (27) is meshed with a tooth plate (28), the end of the tooth plate (28) is rotatably mounted with a push frame (26), the end of the push frame (26) is rotatably mounted with a pressure frame (5), the end of the pressure frame (5) is embedded with a connecting frame (4), the end of the connecting frame (4) is fixed to the pressure plate (3), both sides of the gear (27) are provided with shaft frames (7), the shaft frames (7) are rotatably mounted on the bearing shaft (6), the lower ends of the shaft frames (7) are fixed to the machine base (1), the opposite surfaces of the two shaft frames (7) are extended with guide ears (30), both sides of the tooth plate (28) are provided with guide grooves (29), and the guide ears (30) are slidably mounted inside the guide grooves (29).

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