Automatic detection device for rockwell hardness of steel ball

Abstract

The application relates to the technical field of steel ball hardness detection, in particular to a steel ball Rockwell hardness automatic detection device. A positioning unit comprises a regulating disc rotatably arranged on a base, a lifting platform is fixedly arranged on the regulating disc, a positioning disc is fixedly arranged on the top of the lifting platform, a material loading disc is fixedly arranged on the positioning disc, a positioning block is slidably arranged on the material loading disc, a reinforcing unit for axially fixing materials is arranged on the positioning disc, the positioning block can move horizontally along a guide groove on the material loading disc, so that the positioning blocks in all directions are controlled to gather in the middle, the inclined surface of the positioning block is matched with the surface of the lower half of the steel ball, the telescopic rod is synchronously driven to gather in the middle in the movement process of the positioning block, the telescopic telescopic rod can reinforce the upper half of the steel ball through the extrusion plate on the top end, and the side shift of the steel ball during pressure test is avoided.

Description

Technical Field

[0001] This invention relates to the field of steel ball hardness testing technology, specifically to an automatic Rockwell hardness testing device for steel balls. Background Technology

[0002] Cast steel balls are mainly manufactured through high-temperature melting and casting processes. Using traditional casting techniques, various sizes of solid steel balls are produced. However, cast steel balls generally have weaker overall structural density and lower density, resulting in relatively average overall wear resistance. Therefore, these steel balls are mostly used in industrial production scenarios with lower grinding precision requirements and less daily wear. In the entire mass production process of cast steel balls, hardness testing is an essential quality control step. Accurate testing of the steel hardness can effectively determine whether the performance of the finished steel balls meets industry usage specifications and factory standards, allowing for the timely screening of substandard products. The industry commonly uses Rockwell hardness testers for professional hardness testing, as they are easy to operate and provide accurate data, enabling efficient control of the overall production quality of cast steel balls.

[0003] The traditional automatic Rockwell hardness testing device for steel balls consists of a frame, a hardness testing main unit, a feeding and clamping mechanism, intelligent sensors, and a central control module. During operation, the equipment is first debugged and the testing parameters are set. The intelligent sensors sense the feeding status and placement position of the steel balls in real time, accurately control the material conveying rhythm, and automatically complete the precise positioning and clamping. Subsequently, the testing mechanism completes the hardness pressure test. The pressure and displacement intelligent sensors simultaneously collect various real-time data during the testing process, quickly calculate the accurate Rockwell hardness value, and simultaneously upload it to the system to complete the test.

[0004] Traditional steel ball hardness testing devices can achieve precise pre-positioning of the steel ball using intelligent sensor systems, effectively determining the workpiece placement position. Conventional Rockwell hardness testers do not have their own dedicated clamping and fixing structure. In actual testing, a matching clamping mechanism needs to be added to the testing table to limit and fix the steel ball. To accommodate steel balls of different diameters, the equipment is generally equipped with an adjustable movable clamping plate for clamping operations. However, this clamping method only allows the steel ball to form a single point of contact with the clamping plate. The contact area between the two is small, and the friction of the contact surface is insufficient. When the hardness tester indenter applies pressure vertically downwards for testing, uneven force causes the steel ball to slip, deviate, or slip. This not only disrupts the predetermined testing point but also causes a large deviation in the hardness test data, seriously affecting the accuracy of the finished product test results and the stability of the overall testing work. Summary of the Invention

[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is: In order to adapt to steel balls of different diameters, the equipment is generally equipped with an adjustable movable clamping plate to perform clamping operations. However, this clamping method only allows the steel ball to form a single point of contact with the clamping plate. The contact area between the two is small and the friction of the contact surface is insufficient. When the hardness tester indenter applies pressure vertically downward for testing, the uneven force causes the steel ball to slip, deviate and slip. This not only disrupts the predetermined testing points, but also causes a large deviation in the hardness test data, which seriously affects the accuracy of the finished product test results and the stability of the overall testing work.

[0006] The technical solution adopted by this application to solve its technical problem is: an automatic Rockwell hardness testing device for steel balls, including a housing, an instrument panel fixedly mounted on the housing, a base fixedly mounted on the bottom of the housing, and a hydraulic cylinder fixedly mounted on the top of the housing. The positioning unit includes a control plate rotatably mounted on the base, a lifting platform fixedly mounted on the control plate, a positioning plate fixedly mounted on the top of the lifting platform, a carrying plate fixedly mounted on the positioning plate, a positioning block slidably mounted on the carrying plate, and a reinforcement unit for axially fixing materials on the positioning plate. The marking unit includes a cylinder fixedly mounted on the loading tray, a telescopic cylinder slidably mounted on the cylinder, a storage bladder fixedly mounted on the cylinder, a disk rotatably mounted inside the cylinder, an intelligent marker fixedly mounted on the disk, and a guide tube fixedly mounted on the intelligent marker.

[0007] Preferably, a control lever is fixedly provided on the outer peripheral surface of the control panel, and multiple control levers are evenly arranged among each other. A ball is fixedly provided on the end of each control lever, and a snap-fit ​​is provided on the side wall of the outer shell.

[0008] Preferably, the reinforcement unit includes a telescopic rod slidably disposed on the loading tray, a bracket fixedly disposed on the top end of the telescopic rod, an extrusion plate rotatably disposed between the brackets, and an intelligent reducer for controlling the tilt angle of the extrusion plate fixedly disposed on the bracket.

[0009] Preferably, the extrusion plate is arc-shaped, and anti-slip ridges are fixedly provided on the clamping surface of the extrusion plate. The spacing between the multiple anti-slip ridges is equal, and the anti-slip ridges are wavy.

[0010] Preferably, a servo motor is fixedly installed on the lifting platform, and a turntable is fixedly installed on the output end of the servo motor. A guide groove is provided on the loading plate, and a guide groove is provided on the turntable. The loading plate and the turntable are coaxially arranged. The positioning block is slidably connected to the first guide groove, and the positioning block is inclined.

[0011] Preferably, a shaft is fixedly provided on the bottom of the positioning block, a connecting plate is fixedly provided on the shaft, the connecting plate is slidably connected to the loading tray, a limiting block is also fixedly provided on the shaft, the limiting block is slidably connected to the first guide groove, and the shaft passes through the first guide groove and the second guide groove.

[0012] Preferably, a spring is fixedly installed inside the cylinder, the other end of the spring is fixedly connected to the telescopic cylinder, and the bottom of the storage bladder is fixedly connected to the guide tube.

[0013] Preferably, the inner wall of the cylinder is provided with an inclined groove, a guide rod is fixedly provided on the side wall of the first disc and the guide rod is slidably connected to the inclined groove, a partition is rotatably provided inside the cylinder, and ratchet teeth are fixedly provided on both the upper and lower ends of the partition, and a clamping plate is fixedly provided on both the first disc and the second disc.

[0014] Preferably, the partition plate has material conveying holes, and the multiple material conveying holes are evenly arranged among each other. A sealing sleeve is fixedly provided at the connection between the partition plate and the first disk and the second disk.

[0015] Preferably, the cylinder is located at the center of the positioning disk, and the clamping plates are all telescopic.

[0016] The beneficial effects of this application are: the automatic Rockwell hardness testing device for steel balls provided by this application allows the operator to first move the device to a predetermined position for positioning and fixing when using the device, and then place the steel ball to be processed in the cylinder on the loading plate.

[0017] 1. By using a servo motor mounted on the lifting platform, the turntable at its output end rotates simultaneously when the servo motor rotates. During the rotation, the shaft moves synchronously. Under the constraint of guide groove one and guide groove two, the shaft ensures that the positioning block can move horizontally along guide groove one on the loading plate. This allows the positioning blocks in all directions to converge towards the center, and the inclined surface of the positioning block to fit against the surface of the lower half of the steel ball. During the movement of the positioning block, the telescopic rod is synchronously driven to converge towards the center. The telescopic rod can reinforce the upper half of the steel ball through the extrusion plate at the top, ensuring that the steel ball will not shift laterally during the pressure test.

[0018] 2. During the pressure test of the steel ball placed on the cylinder, the steel ball under pressure will press down on the telescopic cylinder on the cylinder. When the telescopic cylinder moves down, it can guide the guide rod on the disc, thereby controlling the disc to move down. Under the limiting action of the inclined groove, the guide rod will rotate axially. When the disc rotates, it can drive the partition to rotate axially through the clamping plate. When the telescopic cylinder moves down, it can compress the storage bladder, so that the marking pigment inside is transported to the intelligent marker through the guide tube. This allows the intelligent marker to mark the surface of the steel ball, which is convenient for subsequent positioning when detecting the depressions on the surface of the steel ball. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the positioning unit structure of the present invention; Figure 5 This is a schematic diagram of the positioning disk structure of the present invention; Figure 6 This is a schematic diagram of the turntable structure of the present invention; Figure 7 This is a schematic diagram of the positioning block structure of the present invention; Figure 8 This is a schematic diagram of the cylindrical structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the cylinder of the present invention; Figure 10 This is a side view of the cylindrical structure of the present invention.

[0020] In the diagram: 1. Outer shell; 11. Bayonet; 12. Instrument panel; 2. Base; 21. Control panel; 211. Control lever; 212. Spherical object; 3. Lifting platform; 31. Positioning plate; 32. Telescopic rod; 321. Bracket; 322. Extrusion plate; 323. Anti-slip rib; 324. Intelligent reducer; 33. Loading tray; 331. Guide groove one; 34. Turntable; 341. Guide groove two; 35. Servo 5. Motor; 6. Hydraulic cylinder; 7. Lower pressure head; 8. Positioning block; 9. Connecting plate; 10. Shaft; 11. Limiting block; 12. Cylinder; 13. Inclined groove; 14. Disc one; 15. Clamping plate; 16. Sealing sleeve; 17. Disc two; 18. Telescopic cylinder; 19. Storage bladder; 10. Spring; 11. Guide tube; 12. Partition plate; 13. Feeding hole; 14. Ratchet; 15. Intelligent marker. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] Reference Figures 1-4 An automatic Rockwell hardness testing device for steel balls includes a housing 1, an instrument panel 12 fixedly mounted on the housing 1, a base 2 fixedly mounted on the bottom of the housing 1, and an instrument panel 12 fixedly mounted on the front of the housing 1 for displaying test data, facilitating real-time viewing of various test parameters by operators. A hydraulic cylinder 5 is fixedly mounted on the top of the housing 1, and a pressing head 51 is fixedly mounted on the hydraulic cylinder 5. The lower end of the hydraulic cylinder 5 is firmly connected to the pressing head 51 for testing. The pressing head 51 is smoothly lowered by the extension and retraction of the hydraulic cylinder 5 to apply pressure, thereby completing the Rockwell hardness extrusion test of the steel ball. The device has a simple and reasonable structural layout and stable and reliable operation. The positioning unit includes a control plate 21 rotatably mounted on the base 2, and a lifting platform 3 is fixedly mounted on the control plate 21.

[0024] Reference Figures 1-3 A control lever 211 is fixedly mounted on the outer circumference of the control panel 21, and multiple control levers 211 are evenly arranged among each other. A ball 212 is fixedly mounted on the end of each control lever 211. The multiple control levers 211 are evenly and neatly arranged around the circumference of the control panel 21, with a regular and orderly layout, which facilitates multi-angle gripping and control by the operator. An anti-slip ball 212 is fixedly installed at the outer end of each control lever 211. The surface of the ball 212 is round and smooth, which can effectively increase the contact area when the hand is gripping, improve the grip comfort when rotating the control panel 21, and prevent the hand from slipping during operation. This allows the operator to flexibly rotate the control panel 21 and accurately complete the adjustment of various parameters and positions of the equipment. A bayonet 11 is opened on the side wall of the outer shell 1, which facilitates the transfer and handling of the entire device by the operator. A positioning plate 31 is fixedly installed on the top of the lifting platform 3, a carrying plate 33 is fixedly installed on the positioning plate 31, a positioning block 6 is slidably installed on the carrying plate 33, and a reinforcement unit for axially fixing materials is provided on the positioning plate 31. Reference Figures 3-7The reinforcement unit includes a telescopic rod 32 slidably mounted on the loading tray 33. A bracket 321 is fixedly mounted on the top of the telescopic rod 32. A pressing plate 322 is rotatably mounted between the brackets 321. An intelligent reducer 324 that controls the tilt angle of the pressing plate 322 is fixedly mounted on the brackets 321. During rotation, the reducer can drive the shaft 62 to move synchronously. Under the constraint of the first guide groove 331 and the second guide groove 341, the shaft 62 ensures that the positioning block 6 can move horizontally along the first guide groove 331 on the loading tray 33, thereby controlling the positioning blocks 6 in various directions to converge towards the center and making the inclined surface of the positioning block 6 fit against the surface of the lower half of the steel ball. During the movement of the positioning block 6, the telescopic rod 32 is driven to converge towards the center. The telescopic rod 32 can reinforce the upper half of the steel ball through the pressing plate 322 at the top.

[0025] Reference Figures 5-7 The extrusion plate 322 is arc-shaped, and anti-slip ribs 323 are fixedly provided on the clamping surface of the extrusion plate 322. The anti-slip ribs 323 are spaced equally and are wavy. The extrusion plate 322 used for clamping adopts an arc-shaped structure design, which can fit the outer arc of the steel ball to achieve a close-fitting clamping. Anti-slip ribs 323 are integrally fixed on the inner clamping surface of the extrusion plate 322. Multiple sets of anti-slip ribs 323 are evenly and uniformly arranged, and the arrangement is neat and orderly. The anti-slip ribs 323 are uniformly set as wavy structures, which can greatly increase the contact friction area with the surface of the steel ball, change the traditional point contact force form, effectively enhance the clamping and fastening force, and prevent the steel ball from slipping and shifting when subjected to pressure during hardness testing.

[0026] The marking unit includes a cylinder 7 fixedly mounted on a loading tray 33, a telescopic cylinder 8 slidably mounted on the cylinder 7, a storage bladder 81 fixedly mounted on the cylinder 7, a disc 72 rotatably mounted inside the cylinder 7, an intelligent marker 9 fixedly mounted on the disc 72, and a guide tube 83 fixedly mounted on the intelligent marker 9.

[0027] Reference Figures 4-6 A servo motor 35 is fixedly installed on the lifting platform 3. A turntable 34 is fixedly installed on the output end of the servo motor 35. A guide groove 331 is opened on the loading tray 33, and a guide groove 341 is opened on the turntable 34. The loading tray 33 and the turntable 34 are coaxially arranged. The positioning block 6 is slidably connected to the guide groove 331. The positioning block 6 is inclined. The inclined surface of the positioning block 6 is in contact with the surface of the lower half of the steel ball. During the movement of the positioning block 6, the telescopic rod 32 is synchronously driven to converge towards the middle.

[0028] Reference Figures 4-7A shaft 62 is fixedly installed on the bottom of the positioning block 6, and a connecting plate 61 is fixedly installed on the shaft 62. The connecting plate 61 is slidably connected to the loading tray 33. A limit block 621 is also fixedly installed on the shaft 62. The limit block 621 is slidably connected to the first guide groove 331. The shaft 62 passes through the first guide groove 331 and the second guide groove 341. When the servo motor 35 is controlled to rotate, the turntable 34 on its output end will also rotate. During the rotation, it can drive the shaft 62 to move synchronously. Under the restriction of the first guide groove 331 and the second guide groove 341, the shaft 62 ensures that the positioning block 6 can move horizontally along the first guide groove 331 on the loading tray 33, thereby realizing the control of the positioning blocks 6 in various directions to converge towards the center.

[0029] Reference Figures 8-10 A spring 82 is fixedly installed inside the cylinder 7. The other end of the spring 82 is fixedly connected to the telescopic cylinder 8. The bottom of the storage bladder 81 is fixedly connected to the guide tube 83. The spring 82 installed inside the cylinder 7 ensures that the telescopic cylinder 8 can freely reset when the device is idle.

[0030] Reference Figures 8-10 The inner wall of the cylinder 7 is provided with a sloping groove 71. A guide rod is fixedly installed on the side wall of the first disc 72, and the guide rod is slidably connected to the sloping groove 71. A partition 84 is rotatably installed inside the cylinder 7. Both the upper and lower ends of the partition 84 are fixedly provided with ratchet teeth 85. Both the first disc 72 and the second disc 73 are fixedly provided with a clamping plate 721. Through the sloping groove 71 installed inside the cylinder 7, the first disc 72 can be driven to rotate axially during the downward movement of the telescopic cylinder 8.

[0031] Reference Figures 9-10 The partition 84 has a feeding hole 841, and multiple feeding holes 841 are evenly arranged. The connection between the guide pipe 83 and the first disc 72 and the second disc 73 is fixedly provided with a sealing sleeve 722. When the first disc 72 rotates, it can drive the partition 84 to rotate axially through the clamping plate 721. When the telescopic cylinder 8 moves down, it can compress the storage bladder 81, so that the marking pigment inside is transported to the intelligent marker 9 through the guide pipe 83, so that the intelligent marker 9 can perform marking processing on the steel ball.

[0032] Reference Figures 5-6 The cylinder 7 is located at the center of the positioning plate 31, and the clamping plates 721 are all telescopic. By setting the position of the cylinder 7, the positioning accuracy of the steel ball can be achieved.

[0033] Specifically, the solution is as follows: When using the device, the operator first moves it to the predetermined position for positioning and fixation. Then, the steel ball to be processed is placed in the cylinder 7 on the loading tray 33. Through the servo motor 35 mounted on the lifting platform 3, the turntable 34 at its output end rotates simultaneously with the servo motor 35, driving the shaft 62 to move synchronously. Under the constraint of guide groove 1 331 and guide groove 2 341, the shaft 62 ensures that the positioning block 6 can move horizontally along guide groove 1 331 on the loading tray 33. This allows the positioning blocks 6 in all directions to converge towards the center, and the inclined surface of the positioning block 6 to fit against the surface of the lower half of the steel ball. During the movement of the positioning block 6, the telescopic rod 32 is simultaneously driven to converge towards the center. The upper part of the steel ball can be reinforced by the extrusion plate 322 at the top to ensure that the steel ball will not shift laterally during the pressure test. During the process of the steel ball being placed on the cylinder 7 and pressed down, the steel ball under pressure will press down on the telescopic cylinder 8 on the cylinder 7. When the telescopic cylinder 8 moves down, it can press down on the guide rod on the disc 72, thereby controlling the downward movement of the disc 72. The guide rod rotates axially under the limiting action of the inclined groove 71. When the disc 72 rotates, it can drive the partition 84 to rotate axially through the clamping plate 721. When the telescopic cylinder 8 moves down, it can compress the storage bladder 81, so that the marking pigment inside is transported to the intelligent marker 9 through the guide pipe 83. This allows the intelligent marker 9 to mark the surface of the steel ball, which is convenient for subsequent positioning when detecting the depressions on the surface of the steel ball.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0035] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An automatic Rockwell hardness testing device for steel balls, comprising a housing (1), an instrument panel (12) fixedly mounted on the housing (1), a base (2) fixedly mounted on the bottom of the housing (1), a hydraulic cylinder (5) fixedly mounted on the top of the housing (1), and a downward pressure head (51) fixedly mounted on the hydraulic cylinder (5), characterized in that... Also includes: The positioning unit includes a control plate (21) rotatably mounted on the base (2), a lifting platform (3) fixedly mounted on the control plate (21), a positioning plate (31) fixedly mounted on the top of the lifting platform (3), a carrying plate (33) fixedly mounted on the positioning plate (31), a positioning block (6) slidably mounted on the carrying plate (33), and a reinforcement unit for axially fixing materials on the positioning plate (31). The marking unit includes a cylinder (7) fixedly mounted on the loading tray (33), a telescopic cylinder (8) slidably mounted on the cylinder (7), a storage bladder (81) fixedly mounted on the cylinder (7), a disc (72) rotatably mounted inside the cylinder (7), an intelligent marker (9) fixedly mounted on the disc (72), and a guide tube (83) fixedly mounted on the intelligent marker (9).

2. The automatic Rockwell hardness testing device for steel balls according to claim 1, characterized in that, A control lever (211) is fixedly provided on the outer peripheral surface of the control panel (21), and multiple control levers (211) are evenly arranged among each other. A ball (212) is fixedly provided on the end of the control lever (211), and a slot (11) is provided on the side wall of the outer shell (1).

3. The automatic Rockwell hardness testing device for steel balls according to claim 1, characterized in that, The reinforcement unit includes a telescopic rod (32) slidably mounted on the loading tray (33), a bracket (321) fixedly mounted on the top of the telescopic rod (32), an extrusion plate (322) rotatably mounted between the brackets (321), and an intelligent reducer (324) fixedly mounted on the brackets (321) to control the tilt angle of the extrusion plate (322).

4. The automatic Rockwell hardness testing device for steel balls according to claim 3, characterized in that, The extrusion plate (322) is arc-shaped, and anti-slip ribs (323) are fixedly provided on the clamping surface of the extrusion plate (322). The spacing between the multiple anti-slip ribs (323) is equal, and the anti-slip ribs (323) are wavy.

5. The automatic Rockwell hardness testing device for steel balls according to claim 4, characterized in that, A servo motor (35) is fixedly installed on the lifting platform (3), and a turntable (34) is fixedly installed on the output end of the servo motor (35). A guide groove (331) is opened on the loading plate (33), and a guide groove (341) is opened on the turntable (34). The loading plate (33) and the turntable (34) are coaxially arranged. The positioning block (6) is slidably connected to the guide groove (331), and the positioning block (6) is inclined.

6. The automatic Rockwell hardness testing device for steel balls according to claim 5, characterized in that, A shaft (62) is fixedly provided on the bottom of the positioning block (6), and a connecting plate (61) is fixedly provided on the shaft (62). The connecting plate (61) is slidably connected to the loading tray (33). A limit block (621) is also fixedly provided on the shaft (62). The limit block (621) is slidably connected to the first guide groove (331). The shaft (62) passes through the first guide groove (331) and the second guide groove (341).

7. The automatic Rockwell hardness testing device for steel balls according to claim 6, characterized in that, A spring (82) is fixedly installed inside the cylinder (7), and the other end of the spring (82) is fixedly connected to the telescopic cylinder (8). The bottom of the storage bladder (81) is fixedly connected to the guide tube (83).

8. The automatic Rockwell hardness testing device for steel balls according to claim 7, characterized in that, The inner wall of the cylinder (7) is provided with a sloping groove (71). A second disc (73) is fixedly provided at the bottom of the cylinder (7). A guide rod is fixedly provided on the side wall of the first disc (72), and the guide rod is slidably connected to the sloping groove (71). A partition (84) is rotatably provided inside the cylinder (7). Both the upper and lower ends of the partition (84) are fixedly provided with ratchet teeth (85). Both the first disc (72) and the second disc (73) are fixedly provided with a clamping plate (721).

9. The automatic Rockwell hardness testing device for steel balls according to claim 8, characterized in that, The partition (84) has a feeding hole (841) and the multiple feeding holes (841) are evenly arranged. The connection between the guide tube (83) and the first disc (72) and the second disc (73) is fixedly provided with a sealing sleeve (722).

10. The automatic Rockwell hardness testing device for steel balls according to claim 9, characterized in that, The cylinder (7) is located at the center of the positioning disk (31), and the card plates (721) are all telescopic.

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