Full-automatic hardness detection machine for double-row bearing

Abstract

The application relates to the field of hardness detection facilities, in particular to a full-automatic hardness detection machine for double-row bearings, which comprises a machine base, a centering roller fixedly installed at the middle part of the upper end of the machine base, key teeth extended on the outer surface of the centering roller, a bearing shaft coaxially arranged at the side of the centering roller, a convex base extended at the upper end edge of the bearing shaft, a guide column fixedly installed at the upper end surface of the convex base, an elastic pressing base fixedly installed at the outer surface of the guide column, a locking piece arranged between the pressing base and the guide column, two arc-shaped columns symmetrically fixedly installed at the lower end of the pressing base, the center of the arc-shaped column being collinear with the center of the centering roller, and a detection piece installed at the rear edge of the upper end of the machine base. The application improves the convenience and the accuracy of the hardness detection, and ensures the normal operation of the detection.

Description

Technical Field

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

[0002] Bearings are crucial components in mechanical equipment. Their primary function is to support rotating parts and reduce the friction coefficient of mechanical loads during transmission. Double-row bearings, which have two rows of rolling elements along the circumference, are widely used due to their high load-bearing capacity.

[0003] The grooves in the inner rings of double-row bearings primarily serve to accommodate the movement of spherical rolling elements. The hardness of these grooves directly affects the bearing's service life, so testing the groove hardness of double-row bearing inner rings is a common practice during production. However, existing testing equipment often secures the inner rings of double-row bearings via threaded clamping, a cumbersome process that requires frequent rotation and is inconvenient to use. Furthermore, because the inner rings of double-row bearings have two grooves, ensuring that the bottom of the grooves are aligned directly below the testing end after securing them is difficult. Consequently, during subsequent impact testing, the impact force cannot fully act on the grooves, seriously affecting the accuracy of hardness testing. 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 purpose, the technical solution adopted by the present invention is: a fully automatic hardness testing machine for double-row bearings, including a machine base, a centering roller is fixedly installed on the middle part 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 face of the boss, a pressure seat is elastically installed on the outer surface of the guide column, a locking piece is provided 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 collinear 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 wrapped 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, both 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 inside of the lock hole.

[0008] Preferably, a pin cap is coaxially embedded 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 part includes two guide rods symmetrically fixedly installed at the upper rear edge 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 a sliding sleeve is slidably installed on the outer surface of the two guide rods, the sliding sleeve is fixed to the pressure plate, 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, and 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, and 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-slip cap, and the anti-slip cap is fitted to the upper end of the pressure plate. The side of the detection platform is hollowed out to form 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. The output end of the servo push cylinder is fixedly installed with a U-shaped supporting claw, and the U-shaped supporting claw is fitted to the lower end of the column base.

[0012] Preferably, the flip 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 installed with a push frame, the end of the push frame is rotatably installed 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, and shaft frames are provided on both sides of the gear, the shaft frames are rotatably installed on the load-bearing shaft, the lower end of the shaft frame is fixed to the machine base, and guide ears extend from the opposite surfaces of the two shaft frames, and guide grooves are opened on both sides of the tooth plate, and the guide ears are slidably installed 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 double-row bearing inner ring on the centering roller. At this time, the key teeth engage in the keyway of the double-row bearing inner ring to prevent the double-row bearing inner ring from rotating. Then release the lifted pressure seat, and under the push of the compression spring, press the arc column into the groove on the double-row bearing inner ring. 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-moving pressure seat, so that the arc column remains fixed in the groove to prevent the double-row bearing inner ring from moving left and right, thereby fixing the double-row bearing inner ring. The fixing process avoids frequent rotation and effectively improves the ease 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 double-row bearing inner ring, 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 to move downward synchronously. At this time, the push frame is driven by the pressure frame to push the tooth plate, causing it 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 testing 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 testing operation. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0020] Figure 5 This is a cross-sectional view of the 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. Inspection table; 3. Press plate; 4. Connecting frame; 5. Press 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. Inspection 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. Boss; 26. Push frame; 27. Gear; 28. Tooth plate; 29. ​​Guide groove; 30. Guide ear; 31. Key tooth; 32. Arc column; 33. Press seat; 34. Raised ridge; 35. Compression spring; 36. Fixing spring; 37. Column sleeve; 38. Pin cap; 39. Lock pin; 40. Double-row bearing inner ring. DETAILED DESCRIPTION

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

[0024] like Figures 1-6 The fully automatic hardness testing machine for double-row bearings shown in the figure includes a machine base 1, a centering roller 8 is fixedly installed on the middle part of the upper end of the machine base 1, and the centering roller 8 serves to support and position the inner ring 40 of the double-row bearing. The outer surface of the centering roller 8 is extended with a key tooth 31, and the key tooth 31 serves to prevent 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, and 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, and the boss 25 serves to connect the guide column 9. The bearing shaft 6 serves to drive the pressure seat 33 to rotate, and the outer surface of the guide column 9 is elastically mounted with the pressure seat 33, and the guide column 9 serves to guide 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 collinear 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 the hardness test. A detection part is installed at the rear edge of the upper end of the machine base 1, and a flip part is installed at the end of the load-bearing shaft 6, and the flip part is connected to the detection part.

[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 wrapped 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 part 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 pass through the two 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 inside of 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 double-row bearing inner ring 40.

[0027] The outer surface of the locking pin 39 is coaxially inlaid with a pin cap 38, which is slidably installed inside the column sleeve 37. The pin cap 38 plays the role of being pushed by the fixed spring 36. The outer side of the locking pin 39 is wrapped with a fixed spring 36, and one end of the fixed spring 36 is fixed to the pin cap 38. The fixed spring 36 can push the locking pin 39 out so that the locking pin 39 is inserted into the lock hole 19. The other end of the fixed 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 the servo motor 24. The servo motor 24 is fixed to the machine base 1. The servo motor 24 plays a role in driving the threaded rod 20 to rotate.

[0029] The end of the pressure plate 3 is slidably installed with an directional column 17, and the lower end of the directional column 17 is coaxially fixed with a column seat 15. The directional column 17 plays a role in guiding the detection cone column 14. The 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. After the arc column 32 and the centering roller 8 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 outside 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 attached 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 form 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. The output end of the servo push cylinder 10 is fixedly installed with a U-shaped claw 13, which is attached to the lower end of the column base 15. The U-shaped claw 13 supports the column base 15.

[0031] The flip member includes a gear 27 coaxially embedded in the end of the load-bearing shaft 6, and the lower part of the gear 27 is meshed with a tooth plate 28. The gear 27 and the tooth plate 28 play the role of driving the load-bearing shaft 6 to rotate. The end of the tooth plate 28 is rotatably mounted with a push frame 26, and the end of the push frame 26 is rotatably mounted with a press frame 5. 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. The end of the connecting frame 4 is fixed to the pressure plate 3, and the connecting frame 4 plays the role of The pressure plate 3 and the pressure frame 5 are fixed together. There are shaft frames 7 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] When detecting, the locking pin 39 is pulled out of the locking hole 19 and pushed upward, the arc-shaped column 32 on the pressing seat 33 is moved upward, then the double-row bearing inner ring 40 is sleeved on the centering roller 8, at this time, the key teeth 31 are clamped in the key grooves of the double-row bearing inner ring 40 to prevent the double-row bearing inner ring 40 from rotating, then the lifted pressing seat 33 is loosened, under the pushing of the pressing spring 35, the arc-shaped column 32 is pressed in the groove on the double-row bearing inner ring 40, at this time, the locking pin 39 is pushed into the locking hole 19 on the guide column 9 under the pushing of the fixing spring 36, to lock the downward pressing seat 33, so that the arc-shaped column 32 remains in the state of being fixed in the groove, to prevent the double-row bearing inner ring 40 from moving left and right, so as to fix the double-row bearing inner ring 40, and under the limitation of the arc-shaped column 32, the bottom of the groove of the double-row bearing inner ring 40 is located directly below the detection end of the detection cone column 14, then the servo motor 24 works to drive the threaded rod 20 to rotate, so that the pressing plate 3 screwed on the threaded rod 20 moves downward, to press the impact spring 16, so that the impact spring 16 shrinks, at the same time, the pressing frame 5 moves downward synchronously under the driving of the pressing plate 3, at this time, the pushing frame 26 drives the toothed plate 28 to move horizontally under the driving of the pressing frame 5, to drive the gear 27 to rotate, and then drive the arc-shaped column 32 on the bearing shaft 6 to rotate, so that the arc-shaped column 32 rotates in the groove of the double-row bearing inner ring 40, to move away from the bottom of the detection cone column 14, so that the position of the groove to be detected of the double-row bearing inner ring 40 can be fully exposed, then the servo pushing cylinder 10 drives the U-shaped clamping jaw 13 to move away from the bottom of the column seat 15, at this time, the released impact spring 16 pushes 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 the bottom of the groove of the double-row bearing inner ring 40 appears a pit, it indicates that the hardness is not good, otherwise, if the bottom of the groove of the double-row bearing inner ring 40 does not appear a pit, it indicates that the hardness is qualified.

[0033] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended 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 on 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 provided between the pressure seat (33) and the guide column (9), and two arc columns (32) are symmetrically fixedly mounted on the lower end of the pressure seat (33), and the center of the arc column (32) is collinear 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; 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); The flip member includes a gear (27) coaxially embedded in the end of the load-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 load-bearing shaft (6), the lower end of the shaft frames (7) is fixed to the machine base (1), and 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).

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), and 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), and 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 includes a column sleeve (37) fixedly mounted on the side of the pressure seat (33), a locking pin (39) is coaxially and elastically mounted inside the column sleeve (37), both ends of the locking pin (39) pass through the two sides of the column sleeve (37), one end of the locking pin (39) slides through the side of the pressure seat (33), a locking hole (19) is opened on the outer surface of the guide column (9), and one end of the locking pin (39) is inserted into the inside of the locking hole (19).

4. The fully automatic hardness testing machine for double-row bearings according to claim 3, 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 installed inside the column sleeve (37). A fixing spring (36) is wound around the outer side of the locking pin (39), and 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 end of the pressure plate (3) is slidably mounted with a directional column (17), the lower end of the directional column (17) is coaxially fixedly mounted with a column seat (15), 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 outside 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 mounted with a detection table (2).

6. The fully automatic hardness testing machine for double-row bearings according to claim 5, 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 open 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 base (15).

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