High-precision Rockwell hardness tester with rapid calibration function

Abstract

The utility model discloses a high accuracy rockwell hardness tester with quick calibration function belongs to rockwell hardness tester field, including rockwell hardness tester main part, the below of rockwell hardness tester main part is installed with the lift platform, the top of lift platform is fixedly connected with worm wheel, in the utility model, the meshing drive of worm and worm wheel, cooperate the angle indication of angle plate and pointer, and the operator rotates no.

Description

Technical Field

[0001] This utility model relates to the field of Rockwell hardness testers, and more specifically, to a high-precision Rockwell hardness tester with a rapid calibration function. Background Technology

[0002] In the field of materials testing, Rockwell hardness testers are commonly used in manufacturing, metallurgy and other industries as a common device for measuring the hardness of metallic materials. Their testing accuracy and operational efficiency directly affect the results of material quality assessment.

[0003] In the prior art, such as Chinese patent "CN222318708U", a "Rockwell hardness tester" is proposed, which includes a detector housing, a lifting platform extending to the outside of the detector housing is vertically slidably installed on the inner wall of the detector housing, a lifting wheel that is rotatably connected to the detector housing is threaded on the outer wall of the lifting platform, a detection head for testing the hardness of materials is set on the inner side of the detector housing directly above the lifting platform, and a limiting mechanism is set on the detector housing.

[0004] However, in the aforementioned patent, when testing irregularly shaped metal blocks, such as irregularly shaped castings or mechanical parts with rounded edges, the solution can only adjust the sample height through the lifting platform, and cannot flexibly adjust the sample angle. This makes it difficult for the Rockwell hardness tester's testing head to form a completely fitted planar contact with the tested surface of the metal block. The principle of Rockwell hardness testing is to calculate the hardness value by the depth to which the testing head is pressed into the sample surface. The presence of an angle will cause uneven pressure distribution of the testing head and deviation in the indentation depth, which cannot meet the requirements of high-precision testing. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a high-precision Rockwell hardness tester with a rapid calibration function.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-precision Rockwell hardness tester with rapid calibration function includes a Rockwell hardness tester body, a lifting platform installed below the Rockwell hardness tester body, a worm gear fixedly connected above the lifting platform, and rings fixedly connected to both sides of the worm gear. The diameter of the rings is larger than the diameter of the outer wall of the worm gear. A sliding groove is formed on the upper part of the inner wall of the rings, and a limit block is slidably connected inside the sliding groove. An angle disk is attached to one side of one of the rings, and a pointer is fixedly connected below the limit block. The pointer and the surface of the angle disk are slidably connected.

[0007] Furthermore, a placement platform is fixedly connected above the two limiting blocks, and the lower part of the placement platform is slidably connected to the outer wall of the two rings.

[0008] Furthermore, a worm gear is rotatably connected to the center of the placement platform, and the lower part of the outer wall of the worm gear meshes with the outer wall of the worm wheel. A knob is fixedly connected to one end of the worm gear located outside the placement platform.

[0009] Furthermore, both sides of the placement platform are rotatably connected to bidirectional screws, and both sides of the outer wall of the two bidirectional screws are threadedly connected to clamping blocks, which are slidably connected to the placement platform.

[0010] Furthermore, a synchronizing rod is rotatably connected to one side of the placement platform, and bevel gears are fixedly connected to both ends of the synchronizing rod and one end of the two bidirectional screws. The bevel gears at the ends of the two bidirectional screws mesh with the bevel gears at both ends of the synchronizing rod.

[0011] Furthermore, a second knob is fixedly connected to one end of the synchronizing rod.

[0012] Furthermore, a detection head is installed on top of the Rockwell hardness tester body.

[0013] Furthermore, a display screen is installed on top of the Rockwell hardness tester body. Beneficial effects

[0014] (1) In this utility model, by means of the meshing transmission of worm and worm wheel, and with the angle indication of angle disk and pointer, the operator can drive the ring to rotate by turning the No. 1 knob. The calibration position of the placement platform can be directly judged by the scale of the pointer on the angle disk. No additional calibration tools are required, which shortens the calibration time. Even non-professionals can quickly complete the calibration operation.

[0015] (2) In this utility model, under the premise that the clamping block clamps the sample, the first knob is turned again, and the placement platform and sample are rotated through the transmission of "worm gear-worm wheel-ring". Combined with the precise angle indication of the angle plate and the pointer, the angle of the irregular sample can be adjusted so that the test surface is kept flat. The non-standard shape sample can be tested without additional tooling.

[0016] (3) In this utility model, rotating the second knob can drive the two bidirectional screws to rotate synchronously through the transmission of the synchronous rod and the bevel gear, so that the clamping blocks on both sides slide towards each other along the placement platform and clamp the sample. The reverse thread design of the bidirectional screws ensures that the clamping blocks move synchronously, avoids uneven force on the sample, effectively prevents the sample from shifting during the test, and provides a stable benchmark for hardness testing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the bidirectional screw and the placement platform in this utility model; Figure 3 This is a schematic diagram showing the connection between the placement platform and the ring of this utility model; Figure 4 for Figure 2 Enlarged structural diagram of region A in the middle; Figure 5 for Figure 2 A magnified structural diagram of region B in the middle.

[0019] The labels in the diagram represent: 1. Rockwell hardness tester body; 11. Test head; 12. Display screen; 13. Lifting platform; 14. Worm gear; 15. Ring; 16. Slide groove; 17. Angle plate; 18. Placement platform; 19. Limit block; 2. Pointer; 21. Worm gear; 22. No. 1 knob; 23. Double-acting screw; 24. Synchronizing rod; 25. Bevel gear; 26. No. 2 knob; 27. Clamping block. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] In some embodiments, please refer to Figures 1-5A high-precision Rockwell hardness tester with rapid calibration function includes a Rockwell hardness tester body 1. A lifting platform 13 is installed below the Rockwell hardness tester body 1. A worm gear 14 is fixedly connected above the lifting platform 13. Rings 15 are fixedly connected to both sides of the worm gear 14. The diameter of the rings 15 is larger than the diameter of the outer wall of the worm gear 14. A groove 16 is opened on the upper part of the inner wall of the rings 15. A limit block 19 is slidably connected inside the groove 16. An angle disk 17 is attached to one side of one ring 15. A pointer 2 is fixedly connected below one limit block 19. The pointer 2 is slidably connected to the surface of the angle disk 17. A placement platform 18 is fixedly connected above the two limit blocks 19. The lower part of the placement platform 18 is slidably connected to the outer wall of the two rings 15. A worm 21 is rotatably connected to the middle part inside the placement platform 18. The lower part of the outer wall of the worm 21 meshes with the outer wall of the worm gear 14. A knob 22 is fixedly connected to one end of the worm 21 outside the placement platform 18.

[0023] In this embodiment, a lifting platform 13 is provided below the Rockwell hardness tester body 1, and a worm gear 14 is fixed above the lifting platform 13. The worm 21 inside the placement platform 18 meshes with the worm gear 14. Rotating the first knob 22 can drive the worm 21 to rotate, thereby driving the worm gear 14 and the two side rings 15 to rotate. With the help of the angle disk 17 on one side of the ring 15 and the pointer 2 below the limit block 19, calibration can be completed by the sliding position of the pointer 2 on the angle disk 17 without the need for additional calibration tools, thus shortening the calibration operation time. The diameter of the ring 15 is larger than the outer wall diameter of the worm gear 14. The upper groove 16 of its inner wall is slidably connected to the limiting block 19, and the lower part of the placement stage 18 is slidably connected to the outer wall of the two rings 15. This structure ensures that the placement stage 18 always moves along the trajectory of the ring 15 when it moves with the limiting block 19, avoiding the placement stage 18 from shifting and ensuring the stability of the sample position during testing. All components related to calibration and positioning, such as worm gear 14, ring 15, worm 21, and knob 22, are integrated between the lifting platform 13 and the placement platform 18. Operators only need to turn knob 22 to simultaneously adjust the position of the placement platform 18 and read the calibration angle, eliminating the need to operate multiple components in steps and reducing operational complexity. The limiting block 19 connects the placement platform 18 and the ring 15 slide groove 16 to form a two-way support; the worm 21 meshes with the worm wheel 14 for transmission, and there is no obvious gap during the transmission process. The combination of the two structures makes it difficult for the placement platform 18 to shake or shift when carrying the sample or adjusting its position, thus ensuring the stability of the test data. By rotating knob 22, the worm gear 21 and worm wheel 14 mesh and drive the placement stage 18 to rotate along the trajectory of ring 15. Combined with the cooperation of angle dial 17 and pointer 2, the rotation angle of the placement stage 18 can be clearly read. This function can adjust the angle of the object being measured, so that the surface of the irregular object being measured remains flush, without the need for additional fixing or adjustment of tooling, thus meeting the testing requirements of non-standard shaped samples.

[0024] In some embodiments, please refer to Figures 1-5 A high-precision Rockwell hardness tester with rapid calibration function has a platform 18 on both sides rotatably connected to bidirectional screws 23. Clamping blocks 27 are threadedly connected to both sides of the outer wall of the two bidirectional screws 23. The clamping blocks 27 and the platform 18 are slidably connected. A synchronizing rod 24 is rotatably connected to one side of the platform 18. Bevel gears 25 are fixedly connected to both ends of the synchronizing rod 24 and one end of the two bidirectional screws 23. The bevel gears 25 at the ends of the two bidirectional screws 23 mesh with the bevel gears 25 at both ends of the synchronizing rod 24. A second knob 26 is fixedly connected to one end of the synchronizing rod 24. A detection head 11 is installed above the Rockwell hardness tester body 1, and a display screen 12 is installed above the Rockwell hardness tester body 1.

[0025] In this embodiment, bidirectional screws 23 are rotatably connected to both sides of the placement platform 18. Clamping blocks 27 are threadedly connected to both sides of the outer wall of the bidirectional screws 23, and the clamping blocks 27 are slidably connected to the placement platform 18. A synchronizing rod 24 is rotatably connected to one side of the placement platform 18. Bevel gears 25 are fixed at both ends of the synchronizing rod 24 and one end of the bidirectional screws 23. The bevel gears 25 at the end of the bidirectional screws 23 mesh with the bevel gears 25 at both ends of the synchronizing rod 24. A second knob 26 is fixed at one end of the synchronizing rod 24. Rotating the second knob 26 can drive the synchronizing rod 24 to rotate. Through the transmission of the bevel gears 25, the two bidirectional screws 23 rotate synchronously, thereby driving the clamping blocks 27 on both sides to slide along the placement platform 18 and move closer together, so as to clamp and fix the sample and prevent the sample from shifting during the test. The clamping structure controlled by knob 26 and the position adjustment structure controlled by knob 22 are independent of each other and integrated into the placement stage 18. The operator can first fix the sample by knob 26 and then adjust the angle and position of the placement stage 18 by knob 22 without switching operating areas, further simplifying the testing process. The Rockwell hardness tester body 1 is equipped with a test head 11 and a display screen 12. After the test head 11 completes the hardness test, the data can be directly displayed on the display screen 12 without manual calculation or reading of the scale, which reduces data recording errors and allows operators to quickly obtain test results, thus improving testing efficiency.

[0026] Working principle: The lifting platform 13 below the main body 1 of the Rockwell hardness tester provides basic support for overall adjustment. The calibration operation is completed through the transmission structure: the operator turns the first knob 22, which drives the worm 21 inside the placement platform 18 to rotate. Because the lower part of the outer wall of the worm 21 meshes with the worm wheel 14 fixed above the lifting platform 13, the rotation of the worm 21 will drive the worm wheel 14 to rotate synchronously, which in turn drives the rings 15 on both sides of the worm wheel 14 to rotate. At this time, the angle disk 17 attached to one side of the ring 15 and the pointer 2 fixed below the limit block 19 form an angle indication cooperation. When the ring 15 rotates, the limit block 19 slides along the groove 16 on the inner wall of the ring 15, and the pointer 2 slides on the surface of the angle disk 17 with the limit block 19. The operator can directly judge the calibration position of the placement platform 18 by the scale of the angle disk 17 pointed to by the pointer 2. The equipment calibration can be completed without additional tools, ensuring the accuracy of the subsequent test benchmark. After calibration, the test sample is placed on the surface of the placement stage 18 and fixed by the clamping structure: rotate the second knob 26 on one side of the placement stage 18 to drive the synchronous rod 24 to rotate; bevel gears 25 are fixed at both ends of the synchronous rod 24 and one end of the bidirectional screws 23 on both sides of the placement stage 18, and the bevel gears 25 at the ends of the bidirectional screws 23 mesh with the bevel gears 25 at both ends of the synchronous rod 24. The rotation of the synchronous rod 24 will drive the two bidirectional screws 23 to rotate synchronously through the meshing transmission of the bevel gears 25. Since the threads on both sides of the outer wall of the bidirectional screws 23 are opposite, and the clamping blocks 27 connected to the threads on their outer walls are slidably connected to the placement stage 18, when the bidirectional screws 23 rotate, the clamping blocks 27 on both sides will slide towards each other and move closer along the surface of the placement stage 18 until the sample is clamped, thus preventing the sample from shifting during the test. If the sample being tested is irregularly shaped, its angle needs to be adjusted to make the surface being tested flush: Keep the clamping block 27 clamping the sample, and turn the first knob 22 again. The ring 15 will rotate through the meshing transmission of the worm gear 21 and worm wheel 14. The lower part of the placement platform 18 is slidably connected to the outer wall of the two rings 15, and the placement platform 18 is connected to the slide groove 16 of the ring 15 through the limiting block 19. The rotation of the ring 15 will drive the placement platform 18 and the sample clamped above to rotate synchronously along the trajectory of the ring 15. At the same time, the pointer 2 slides on the angle plate 17 with the limiting block 19. The operator can accurately control the rotation angle of the placement platform 18 through the scale of the angle plate 17 until the surface being tested of the sample is flush and meets the testing requirements. After the sample is fixed and the angle is adjusted, the Rockwell hardness tester body 1 is started. The test head 11 installed on the top of the test head will contact the sample surface to be tested downwards. Pressure is applied to the sample according to the Rockwell hardness test standard and the hardness is tested. The hardness data generated during the test is transmitted in real time to the display screen 12 installed on the top of the Rockwell hardness tester body 1. The display screen 12 directly displays the test results. The operator does not need to manually read the scale or calculate the data. The operator can quickly obtain accurate hardness test values ​​and complete the entire test process.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision Rockwell hardness tester with rapid calibration function, comprising a Rockwell hardness tester body (1), characterized in that: A lifting platform (13) is installed below the main body (1) of the Rockwell hardness tester. A worm gear (14) is fixedly connected above the lifting platform (13). A ring (15) is fixedly connected to both sides of the worm gear (14). The diameter of the ring (15) is larger than the diameter of the outer wall of the worm gear (14). A groove (16) is opened above the inner wall of the ring (15). A limit block (19) is slidably connected inside the groove (16). An angle disk (17) is attached to one side of one of the rings (15). A pointer (2) is fixedly connected below one of the limit blocks (19). The pointer (2) and the surface of the angle disk (17) are slidably connected.

2. The high-precision Rockwell hardness tester with rapid calibration function according to claim 1, characterized in that: A placement platform (18) is fixedly connected above the two limiting blocks (19), and the lower part of the placement platform (18) is slidably connected to the outer wall of the two rings (15).

3. The high-precision Rockwell hardness tester with rapid calibration function according to claim 2, characterized in that: A worm gear (21) is rotatably connected to the middle of the interior of the placement platform (18). The lower part of the outer wall of the worm gear (21) meshes with the outer wall of the worm wheel (14). A knob (22) is fixedly connected to one end of the worm gear (21) located outside the placement platform (18).

4. The high-precision Rockwell hardness tester with rapid calibration function according to claim 3, characterized in that: Both sides of the placement platform (18) are rotatably connected to bidirectional screws (23), and both sides of the outer wall of the two bidirectional screws (23) are threadedly connected to clamping blocks (27), and the clamping blocks (27) and the placement platform (18) are slidably connected.

5. The high-precision Rockwell hardness tester with rapid calibration function according to claim 4, characterized in that: A synchronizing rod (24) is rotatably connected to one side of the placement platform (18). Both ends of the synchronizing rod (24) and one end of the two bidirectional screws (23) are fixedly connected to bevel gears (25). The bevel gears (25) at the ends of the two bidirectional screws (23) respectively mesh with the bevel gears (25) at both ends of the synchronizing rod (24).

6. The high-precision Rockwell hardness tester with rapid calibration function according to claim 5, characterized in that: One end of the synchronizing rod (24) is fixedly connected to a second knob (26).

7. The high-precision Rockwell hardness tester with rapid calibration function according to claim 1, characterized in that: The Rockwell hardness tester body (1) has a test head (11) mounted on top of it.

8. The high-precision Rockwell hardness tester with rapid calibration function according to claim 1, characterized in that: A display screen (12) is installed on the top of the Rockwell hardness tester body (1).

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