Grinding sheet hardness testing device

Abstract

The utility model discloses a grinding piece hardness testing device, which relates to the technical field of grinding piece detection and comprises a device main body and a mounting plate, a telescopic rod is fixedly connected between the mounting plate and a mounting frame, an impact rod is fixedly connected to the bottom of the mounting plate, a positioning mechanism is mounted between the mounting plate and the mounting frame, and sliding chutes are formed in two sides of the mounting frame. Connecting rods are fixedly connected to the two sides of the mounting plate, fixing strips are fixedly connected to the tail ends of the connecting rods, hanging rings are fixedly connected to the bottoms of the fixing strips, and an impact force adjusting mechanism is mounted outside the device body. According to the device, impact force dynamic balance control is achieved through the adjustable tension spring number and odd number symmetrical layout, the test efficiency is improved by combining rapid positioning of a sliding rod plug pin, controllable impact loads are generated through the synergistic effect of an elastic assembly and gravity, and through symmetrical distribution of multiple sets of impact rods and flexible matching of hanging points, the stability of the impact direction is ensured, and meanwhile the test efficiency is improved. And the impact strength can be accurately adjusted, so that hardness detection has dynamic response and data repeatability.

Description

Technical Field

[0001] This utility model relates to the field of polishing disc testing technology, and more specifically, to a polishing disc hardness testing device. Background Technology

[0002] In the field of grinding disc production, hardness testing is a crucial step in assessing its durability and applicability. Traditional testing methods often employ static pressure testing or single impact load tests, which struggle to simulate the complex dynamic impact conditions encountered in actual use. While existing impact testing equipment can apply instantaneous loads, it generally suffers from limited impact force adjustment range and susceptibility to force direction deviation, resulting in significant data dispersion. Some devices adjust the impact force through mechanical structures to increase or decrease the load, but this is cumbersome and cannot guarantee the symmetry of force distribution across multiple impact points, easily leading to testing errors due to off-center loading.

[0003] In addition, conventional equipment lacks a rapid positioning and precise impact energy control mechanism, and the position of components needs to be repeatedly adjusted during the test, which is inefficient. These defects make it difficult for existing technology to meet the diverse testing needs of grinding discs of different specifications. Therefore, in order to address the above technical problems, a grinding disc hardness testing device is proposed here. Utility Model Content

[0004] The purpose of this invention is to provide a hardness testing device for abrasive discs. It achieves dynamic balance control of impact force through the adjustable number of tension springs and an odd-numbered symmetrical layout. Combined with the rapid positioning of the slide pin, it improves testing efficiency. It utilizes the synergistic effect of elastic components and gravity to generate a controllable impact load. Through the symmetrical distribution of multiple sets of impact rods and flexible matching of the attachment points, it can accurately adjust the impact intensity while ensuring the stability of the impact direction, so that the hardness test has both dynamic response and data repeatability.

[0005] This utility model is achieved through the following technical solution:

[0006] A grinding disc hardness testing device includes a main body and a mounting plate. A clamping plate is fixedly connected to the upper side of the main body, and a positioning component is installed on the outside of the clamping plate. A mounting frame is fixedly connected to the upper side of the main body. A telescopic rod is fixedly connected between the mounting plate and the mounting frame. An impact rod is fixedly connected to the bottom of the mounting plate. A positioning mechanism is installed between the mounting plate and the mounting frame. Sliding grooves are formed on both sides of the mounting frame. Connecting rods are fixedly connected to both sides of the mounting plate and are slidably connected to the inner side of the sliding grooves. A fixing strip is fixedly connected to the end of the connecting rod and is slidably connected to both sides of the mounting frame. A hanging ring is fixedly connected to the bottom of the fixing strip. An impact force adjustment mechanism is installed on the outside of the main body.

[0007] Preferably, the number of the card plates is two sets and they are arranged symmetrically. The positioning element includes a screw and a positioning block, and the positioning block is fixedly connected to the bottom end of the screw.

[0008] Preferably, the number of impact rods is several groups arranged symmetrically, and the impact rods are installed above the card plate.

[0009] Preferably, the positioning mechanism includes a through hole, a slide rod, a positioning hole, and a pin. The through hole is opened on the upper side of the mounting bracket, the slide rod is fixedly connected to the upper side of the mounting plate, and the slide rod is slidably connected to the inner side of the through hole.

[0010] Preferably, the positioning hole is located on the outside of the slide rod, the pin is slidably connected to the inside of the positioning hole, and the pin abuts against the slide rod.

[0011] Preferably, the impact force adjustment mechanism includes a fixed plate, a tension spring, and a hook. The fixed plate is fixedly connected to the outside of the main body of the device, the tension spring is fixedly connected to the upper side of the fixed plate, and the hook is fixedly connected to the end of the tension spring.

[0012] Preferably, the number of hanging rings and tension springs are several groups arranged horizontally, and the hooks and hanging rings are matched. The number of hanging rings and tension springs installed is odd.

[0013] The technical solution of this utility model has at least the following beneficial effects:

[0014] This invention proposes a grinding disc hardness testing device. Through an odd-numbered symmetrically distributed elastic component and an adjustable hanging structure, it achieves linear adjustment and dynamic balance of impact force. This allows for rapid matching of different test intensity requirements while ensuring no deviation in the impact direction. The sliding rod and pin linkage enables precise positioning of the mounting plate height. Combined with the synchronous pressure application of multiple impact rods, it significantly improves testing efficiency and data consistency. Furthermore, the impact load formed by the combined action of elastic tension and gravity more closely resembles actual working conditions. The trajectory limit of the telescopic rod and sliding groove effectively reduces test errors. Moreover, the flexible configuration of the hanging points allows for the completion of multi-level impact tests in a single clamping, reducing the number of repeated adjustments. At the same time, the symmetrical layout design avoids local damage to the grinding disc caused by unilateral force application, ensuring the repeatability and accuracy of the test results. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0017] Figure 3 This is a schematic diagram of the second overall structure of the present invention;

[0018] Figure 4 for Figure 1 Enlarged view of B in the middle;

[0019] Figure 5 This is a partial front sectional view of the present invention;

[0020] Figure 6 for Figure 5 Enlarged view of C in the middle;

[0021] Figure 7 for Figure 1 Enlarged view of D;

[0022] Figure 8 for Figure 3 Enlarged view of E in the middle;

[0023] Reference numerals in the attached drawings: 1. Main body of the device; 2. Clamping plate; 3. Positioning component; 4. Mounting bracket; 5. Mounting plate; 6. Telescopic rod; 7. Impact rod; 8. Through hole; 9. Slide rod; 10. Positioning hole; 11. Pin; 12. Slide groove; 13. Connecting rod; 14. Fixing strip; 15. Hanging ring; 16. Fixing plate; 17. Tension spring; 18. Hook. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-8 This utility model proposes a grinding disc hardness testing device, including a device body 1 and a mounting plate 5. A clamping plate 2 is fixedly connected to the upper side of the device body 1, and a positioning component 3 is installed on the outside of the clamping plate 2. A mounting frame 4 is fixedly connected to the upper side of the device body 1. A telescopic rod 6 is fixedly connected between the mounting plate 5 and the mounting frame 4. An impact rod 7 is fixedly connected to the bottom of the mounting plate 5. A positioning mechanism is installed between the mounting plate 5 and the mounting frame 4. Slide grooves 12 are provided on both sides of the mounting frame 4. Connecting rods 13 are fixedly connected to both sides of the mounting plate 5, and the connecting rods 13 are slidably connected to the inner side of the slide grooves 12. A fixing strip 14 is fixedly connected to the end of the connecting rod 13, and the fixing strip 14 is slidably connected to both sides of the mounting frame 4. A hanging ring 15 is fixedly connected to the bottom of the fixing strip 14. An impact force adjustment mechanism is installed on the outside of the device body 1.

[0026] There are two sets of clamping plates 2 arranged symmetrically. The positioning component 3 includes a screw and a positioning block. The positioning block is fixedly connected to the bottom end of the screw. By rotating the screw of the positioning component 3, the bottom positioning block is pressed down, and the grinding disc can be firmly installed inside the clamping plate 2.

[0027] The number of impact rods 7 is several groups arranged symmetrically, and the impact rods 7 are installed above the clamping plate 2. The simultaneous pressing of multiple groups of impact rods 7 can ensure that the surface of the grinding disc is subjected to uniform force and avoid local stress concentration from affecting the test results.

[0028] The positioning mechanism includes a through hole 8, a slide rod 9, a positioning hole 10, and a pin 11. The through hole 8 is located on the upper side of the mounting bracket 4. The slide rod 9 is fixedly connected to the upper side of the mounting plate 5 and is slidably connected to the inner side of the through hole 8. The positioning hole 10 is located on the outer side of the slide rod 9. The pin 11 is slidably connected to the inner side of the positioning hole 10 and abuts against the slide rod 9. When the slide rod 9 is raised to the required height, the pin 11 is inserted to fix the position of the mounting plate 5, which facilitates subsequent operations.

[0029] The impact force adjustment mechanism includes a fixed plate 16, a tension spring 17, and a hook 18. The fixed plate 16 is fixedly connected to the outside of the main body 1 of the device, the tension spring 17 is fixedly connected to the upper side of the fixed plate 16, and the hook 18 is fixedly connected to the end of the tension spring 17. The impact force can be flexibly adjusted by changing the number of hooks 18 connected to the hanging ring 15.

[0030] The number of hanging rings 15 and tension springs 17 are several sets arranged horizontally, and the hooks 18 and hanging rings 15 are matched. The number of hanging rings 15 and tension springs 17 installed is odd. The odd number configuration ensures that the force on both sides can be balanced no matter how many tension springs 17 are connected, and prevents the occurrence of unbalanced load during the test.

[0031] The working principle of a grinding disc hardness testing device based on an embodiment is as follows: When in use, the grinding disc to be tested is first placed between two sets of symmetrical clamping plates 2 on the upper side of the device body 1. The screw of the rotating positioning component 3 drives the bottom positioning block to press down, and the grinding disc is firmly clamped inside the clamping plate 2. Then, the operator manually pulls the mounting plate 5 upward, so that the slide rod 9 slides vertically along the through hole 8 on the upper side of the mounting bracket 4. When the mounting plate 5 is raised to the set height, the pin 11 is inserted into the corresponding positioning hole 10 on the outer side of the slide rod 9 to temporarily lock the position of the mounting plate 5. At this time, the operator selects different numbers of tension springs 17 according to the test requirements, and hangs the hooks 18 at the end of the tension springs 17 on the fixing plate 16 to the corresponding hanging rings 15 at the bottom of the fixing strip 14 in sequence. Since the hanging rings 15, tension springs 17 and hooks 18 adopt an odd-numbered symmetrical arrangement design, even if different numbers of tension springs 17 are hung, the force balance on both sides can still be guaranteed, and the tilting during the impact process can be avoided.

[0032] After preparation, pull out the pin 11 to release the lock of the slide bar 9. The mounting plate 5 falls rapidly under the combined action of the elastic tension of the tension spring 17 and its own weight, which drives the multiple sets of impact rods 7 at the bottom to apply an instantaneous impact load to the grinding disc in the clamping plate 2. The hardness performance can be evaluated by observing the surface deformation or crack state of the grinding disc. In order to obtain multiple sets of comparative data, the impact force intensity can be adjusted by increasing or decreasing the number of attached tension springs 17. The odd number of elastic components ensures that the impact force is evenly distributed during each test. During the entire test, the connecting rods 13 on both sides of the mounting plate 5 slide along the slide groove 12 to limit the movement, and work with the telescopic rod 6 to maintain the stability of the movement trajectory, thereby improving the accuracy and repeatability of the test results.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the hardness of a grinding disc, characterized in that: The device includes a main body (1) and a mounting plate (5). A clamping plate (2) is fixedly connected to the upper side of the main body (1). A positioning element (3) is installed on the outside of the clamping plate (2). A mounting frame (4) is fixedly connected to the upper side of the main body (1). A telescopic rod (6) is fixedly connected between the mounting plate (5) and the mounting frame (4). An impact rod (7) is fixedly connected to the bottom of the mounting plate (5). A positioning mechanism is installed between the mounting plate (5) and the mounting frame (4). The mounting bracket (4) has sliding grooves (12) on both sides. The mounting plate (5) is fixedly connected to the two sides with connecting rods (13), and the connecting rods (13) are slidably connected to the inner side of the sliding grooves (12). The end of the connecting rods (13) is fixedly connected to a fixing strip (14), and the fixing strip (14) is slidably connected to the two sides of the mounting bracket (4). The bottom of the fixing strip (14) is fixedly connected to a hanging ring (15). An impact force adjustment mechanism is installed on the outside of the main body (1) of the device.

2. The grinding disc hardness testing device according to claim 1, characterized in that: The number of the card plates (2) is two sets and they are arranged symmetrically. The positioning element (3) includes a screw and a positioning block, and the positioning block is fixedly connected to the bottom end of the screw.

3. The grinding disc hardness testing device according to claim 1, characterized in that: The number of impact rods (7) is several groups arranged symmetrically, and the impact rods (7) are installed above the card plate (2).

4. The grinding disc hardness testing device according to claim 1, characterized in that: The positioning mechanism includes a through hole (8), a slide rod (9), a positioning hole (10), and a pin (11). The through hole (8) is opened on the upper side of the mounting bracket (4). The slide rod (9) is fixedly connected to the upper side of the mounting plate (5), and the slide rod (9) is slidably connected to the inner side of the through hole (8).

5. The grinding disc hardness testing device according to claim 4, characterized in that: The positioning hole (10) is opened on the outside of the slide rod (9), and the pin (11) is slidably connected to the inside of the positioning hole (10), and the pin (11) abuts against the slide rod (9).

6. The grinding disc hardness testing device according to claim 1, characterized in that: The impact force adjustment mechanism includes a fixed plate (16), a tension spring (17), and a hook (18). The fixed plate (16) is fixedly connected to the outside of the main body (1) of the device. The tension spring (17) is fixedly connected to the upper side of the fixed plate (16). The hook (18) is fixedly connected to the end of the tension spring (17).

7. The grinding disc hardness testing device according to claim 6, characterized in that: The number of hanging rings (15) and tension springs (17) are several sets arranged horizontally, and the hooks (18) and hanging rings (15) are matched. The number of hanging rings (15) and tension springs (17) installed is odd.

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