Device and method for testing wear resistance of superhard material

Abstract

The invention provides a superhard material wear resistance testing device and method, the testing device comprises a base, a grinding mechanism, a translation mechanism and a testing mechanism, the grinding mechanism comprises a first driving mechanism and a grinding wheel, the first driving mechanism is arranged on the base, and the grinding wheel is connected with an output shaft of the first driving mechanism. The translation mechanism is arranged on the base. The testing mechanism comprises a second driving mechanism and a sample carrier, the second driving mechanism is arranged on the translation mechanism, the translation mechanism can drive the testing mechanism to perform two-dimensional reciprocating motion, so that the sample carrier is close to the grinding wheel, the sample carrier is connected with an output shaft of the second driving mechanism, and the second driving mechanism is used for driving the sample carrier to rotate. An output shaft of the first driving mechanism is parallel to an output shaft of the second driving mechanism. The sample carrier comprises at least one sample groove. And the sample is ground with the grinding wheel in the rotating process and is closer to the actual application scene of the superhard material, so that the measured abrasion ratio is more real and reliable.

Description

Technical Field

[0001] The present application relates to the technical field of performance testing of superhard materials, and in particular to a wear resistance testing device and a testing method for superhard materials. Background Art

[0002] Diamond has a series of excellent physical and chemical properties: extremely high hardness, the hardest material known so far, high wear resistance and low friction coefficient, high elastic modulus, high chemical inertness, highest thermal conductivity, etc. However, the small reserves of natural diamonds, the small size range, and high processing costs have severely restricted the widespread application of diamonds in actual industrial scenarios.

[0003] Under such circumstances, artificial diamonds came into being. Artificial diamond technology has been developed to the point where it is close to or has reached the purity and properties of natural diamonds. However, whether artificial diamonds meet the requirements, wear resistance is an important evaluation indicator, and testing their wear resistance is also of great reference significance for optimizing the production process of diamonds. The traditional method for testing wear resistance is to test the wear ratio of diamonds. Currently, the test of diamond wear ratio is generally to fix the test sample on the testing equipment. The motion platform of the testing equipment can drive the sample to reciprocate and feed relative to the grinding wheel. When the set time is reached, the equipment stops running, and the wear ratio of the grinding wheel and diamond is calculated to detect the wear resistance of the diamond.

[0004] The test environment of the wear ratio test device is quite different from the actual application environment of diamond, so it is difficult to truly reflect the wear resistance of diamond. Summary of the invention

[0005] The purpose of the embodiment of the present application is to provide a wear resistance test device and a test method for superhard materials, so as to optimize the test process and solve the problem that the test environment of the wear resistance test device for superhard materials is quite different from its actual application environment. The specific technical solution is as follows:

[0006] According to a first aspect of the present application, there is provided a wear resistance testing device for superhard materials, comprising a base; a grinding mechanism, comprising a first driving mechanism and a grinding wheel, wherein the first driving mechanism is arranged on the base, and the grinding wheel is connected to the output shaft of the first driving mechanism; a translation mechanism, arranged on the base; a testing mechanism, comprising a second driving mechanism and a sample carrier, wherein the second driving mechanism is arranged on the translation mechanism, and the translation mechanism can drive the testing mechanism to perform two-dimensional reciprocating motion so that the sample carrier approaches the grinding wheel, the sample carrier is connected to the output shaft of the second driving mechanism, the second driving mechanism is used to drive the sample carrier to rotate, the output shaft of the first driving mechanism is parallel to the output shaft of the second driving mechanism, and the sample carrier comprises at least one sample slot.

[0007] In some embodiments, the sample carrier includes at least two sample slots, and the sample slots at different positions overlap with the trajectories of the sample carrier as it rotates one circle.

[0008] In some embodiments, the sample carrier includes: a rotating disk, the center of the rotating disk has an axial hole for connecting to the output shaft of the second driving mechanism, at least two sample slots are provided on the rotating disk, one end of the sample slot passes through the top wall of the rotating disk and is connected to the outside world; a clamping assembly, detachably connected to the rotating disk, for clamping the sample in the sample slot.

[0009] In some embodiments, the rotating disk includes a main body and at least two protrusions, the axial hole is arranged at the center of the main body, the protrusions are distributed at intervals on the periphery of the main body and are connected to the main body, each of the protrusions is provided with at least one sample slot, one end of the sample slot passes through the top wall of the protrusion and is connected to the outside world.

[0010] In some embodiments, the protrusion includes two first side walls arranged sequentially along the rotation direction and two second side walls arranged opposite to each other perpendicular to the rotation direction, and the sample slot is arranged on one or both of the first side walls.

[0011] In some embodiments, the pressing assembly includes a pressing plate and a fastener, wherein the pressing plate is pressed on the sample slot, and the fastener detachably connects the pressing plate to the protrusion.

[0012] In some embodiments, the angle between two adjacent protrusions is 90°, and they are evenly distributed along the circumference of the main body.

[0013] In some embodiments, one of the first side walls of the two opposite protrusions is collinear and an extension line passes through the center of the axial hole, and the other first side wall is located on both sides of the extension line.

[0014] In some embodiments, the cross-section of the main body portion is circular or square with an axial hole in the center.

[0015] In some embodiments, the top wall of the protrusion is arc-shaped, and the curvature radii of the protrusions at different positions are equal.

[0016] In some embodiments, the inner side wall of the sample groove at one end close to the top wall is arc-shaped.

[0017] A second aspect of the present application provides a method for testing the wear resistance of a superhard material, using the above-mentioned superhard material wear resistance testing device, comprising the following steps:

[0018] Provide superhard material samples.

[0019] The superhard material sample is cleaned.

[0020] The superhard material sample and the grinding wheel are weighed respectively, and their respective values ​​are recorded.

[0021] The superhard material sample is fixed in the sample groove, and one end of the superhard material sample extends out of the sample groove.

[0022] The sample carrier is connected to the output shaft of the second driving mechanism, and the grinding wheel is connected to the output shaft of the first driving mechanism.

[0023] The sample carrier is driven to move in two dimensions by the translation mechanism, so that the superhard material sample approaches the grinding wheel.

[0024] When the distance between the superhard material sample and the grinding wheel reaches a preset value, the second driving mechanism and the first driving mechanism are turned on.

[0025] A part of the translation mechanism drives the testing mechanism to feed in a direction perpendicular to the axial direction of the grinding wheel at a first preset speed, so that the superhard material sample contacts the grinding wheel. At the same time, another part of the translation mechanism drives the testing mechanism to reciprocate in a direction parallel to the axial direction of the grinding wheel at a second preset speed to perform a grinding test.

[0026] After a preset time, the grinding test is stopped, the superhard material sample is taken out, cleaned and blown dry, and the ground superhard material sample is weighed.

[0027] The grinding wheel is removed, the dust on the surface is blown away, and the grinding wheel after grinding is weighed.

[0028] Calculate the wear ratio E, wear ratio E=weight difference before and after the grinding wheel test / total weight difference before and after the test of multiple superhard material samples.

[0029] Furthermore, one end of the superhard material sample is arc-shaped, and the arc-shaped end extends out of the sample groove.

[0030] Beneficial effects of the embodiments of the present application:

[0031] The wear resistance testing device and testing method of superhard materials provided in the embodiment of the present application, the translation mechanism of the wear resistance testing device of superhard materials is used to drive the testing mechanism to perform two-dimensional reciprocating motion, so that the testing mechanism can be close to the grinding mechanism, so that the sample placed in the sample carrier can contact the grinding wheel and perform a grinding test. The output shaft of the first driving mechanism is parallel to the output shaft of the second driving mechanism, so the central axis of the sample carrier is parallel to the central axis of the grinding wheel, that is, the width direction of the sample carrier is parallel to the width direction of the wheel surface of the grinding wheel. The sample carrier is connected to the output shaft of the second driving mechanism, and the second driving mechanism can drive the sample carrier to rotate, so the sample placed in the sample carrier is also ground with the grinding wheel during the rotation process, which is closer to the actual application scenario of superhard materials, so the measured wear ratio is more valuable for reference, and can truly reflect whether the wear resistance of the superhard material meets the requirements.

[0032] Of course, implementing any product or method of the present application does not necessarily require achieving all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of a wear resistance testing device for superhard materials;

[0035] Figure 2 for Figure 1 Schematic diagram of the structure of the wear resistance test device for superhard materials without the sample carrier and grinding wheel;

[0036] Figure 3 It is a schematic diagram of the shaft side of the rotating disk in one embodiment;

[0037] Figure 4 is an axial schematic diagram of a sample carrier in one embodiment;

[0038] Figure 5 is an axial schematic diagram of a pressing plate in one embodiment;

[0039] Figure 6 is a schematic structural diagram of a rotating disk in another embodiment;

[0040] Figure 7 is a schematic structural diagram of a rotating disk in yet another embodiment;

[0041] Figure 8is a schematic structural diagram of a rotating disk in yet another embodiment;

[0042] Fig. 9 is a schematic structural diagram of a rotating disk in yet another embodiment;

[0043] Fig.10 A schematic diagram of the structure of a sample provided in an embodiment of the present application;

[0044] Fig.11 Schematic diagram of grinding width measurement method.

[0045] The reference numerals are as follows:

[0046] Base 1; grinding mechanism 2; first driving mechanism 21; output shaft 211 of the first driving mechanism; first limiting member 2111; grinding wheel 22; fixed seat 23; translation mechanism 3; first slide rail 31; platform plate 32; second slide rail 33; mounting seat 34; testing mechanism 4; second driving mechanism 41; output shaft 411 of the second driving mechanism; second limiting member 4111; sample carrier 42; rotating disk 421; main body 4211; axial hole 42111; groove 42112; protrusion 4212; sample groove 42121; first sub-groove 42121a; second sub-groove 42121b; top wall 42122; first side wall 42123; second side wall 42124; clamping assembly 422; pressing plate 4221; fastener 4222; sample 5; dust removal port 6; grinding width L; first direction X; second direction Y. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field based on the present application belong to the scope of protection of the present application.

[0048] In order to solve the problem that the test environment of the existing wear resistance test device for superhard materials is quite different from the actual application environment of superhard materials such as diamond, and it is difficult to truly reflect the wear resistance of the superhard material itself. Diamond is often used as a roller nowadays, and the grinding of diamond occurs during the rotation process. The traditional test of its wear resistance generally fixes the diamond sample and performs a grinding test on it with a grinding wheel to obtain its wear resistance data, which is quite different from the actual application environment of diamond. The embodiment of the present application provides a wear resistance test device for superhard materials, reference Figure 1 and Figure 2 , Figure 1 It is a three-dimensional structural diagram of the wear resistance testing device for superhard materials. Figure 2 for Figure 1A structural schematic diagram of a wear resistance test device for superhard materials without the sample 5 carrier 42 and the grinding wheel 22. The wear resistance test device for superhard materials includes a base 1, a grinding mechanism 2, a translation mechanism 3 and a testing mechanism 4. The grinding mechanism 2 includes a first driving mechanism 21 and a grinding wheel 22. The first driving mechanism 21 is arranged on the base 1, and the grinding wheel 22 is connected to the output shaft 211 of the first driving mechanism. The translation mechanism 3 is arranged on the base 1. The testing mechanism 4 includes a second driving mechanism 41 and a sample 5 carrier 42. The second driving mechanism 41 is arranged on the translation mechanism 3. The translation mechanism 3 can drive the testing mechanism 4 to perform two-dimensional reciprocating motion, so that the sample 5 carrier 42 approaches the grinding wheel 22. The sample 5 carrier 42 is connected to the output shaft 411 of the second driving mechanism. The second driving mechanism 41 is used to drive the sample 5 carrier 42 to rotate. The output shaft 211 of the first driving mechanism is parallel to the output shaft 411 of the second driving mechanism. The sample 5 carrier 42 includes at least one sample slot 42121.

[0049] In this embodiment, the translation mechanism 3 is used to drive the test mechanism 4 to perform two-dimensional reciprocating motion, so that the test mechanism 4 can be close to the grinding mechanism 2, so that the sample 5 placed in the sample 5 carrier 42 can contact the grinding wheel 22 and perform a grinding test. The output shaft 211 of the first drive mechanism is parallel to the output shaft 411 of the second drive mechanism, so the central axis of the sample 5 carrier 42 is parallel to the central axis of the grinding wheel 22, that is, the width direction of the sample 5 carrier 42 is parallel to the wheel surface width direction of the grinding wheel 22. The sample 5 carrier 42 is connected to the output shaft 411 of the second drive mechanism, and the second drive mechanism 41 can drive the sample 5 carrier 42 to rotate, so the sample 5 placed in the sample 5 carrier 42 is also ground with the grinding wheel 22 during the rotation process, which is closer to the actual application scenario of superhard materials, so the measured wear ratio is more valuable for reference, and can truly reflect whether the wear resistance of superhard materials meets the requirements. Among them, superhard materials such as diamonds, diamond composite sheets, etc.

[0050] Optionally, refer to Figure 1 and Figure 2The translation mechanism 3 includes a first slide rail 31 provided on the base 1 and extending along the first direction X, a platform plate 32 slidably connected to the first slide rail 31, and a first driving motor driving the platform plate 32 to reciprocate along the slide rail. The platform plate 32 is provided with a second slide rail 33 extending along the second direction Y, a mounting seat 34 slidably connected to the second slide rail 33, and a second driving motor driving the mounting seat 34 to move along the second slide rail 33. The second driving mechanism 41 is installed on the mounting seat 34. The first driving motor is used to drive the platform plate 32 to move along the first direction X, thereby driving the test mechanism 4 to move along the first direction X, and the second driving motor is used to drive the mounting seat 34 to move along the second direction Y, thereby driving the second driving mechanism 41 to move along the second direction Y, so as to realize the reciprocating motion of the test structure in the two-dimensional direction through the translation mechanism 3.

[0051] Alternatively, if Figure 1 and Figure 2 As shown, the first driving mechanism 21 can be a first motor, and the grinding wheel 22 is directly connected to the output shaft of the first motor. The grinding wheel 22 can be a grinding wheel. The second driving mechanism 41 can be a second motor, and the sample 5 carrier 42 is directly connected to the output shaft of the second motor. The second driving mechanism 41 can be installed on the base 1 through a fixed seat 23. In order to prevent the grinding wheel 22 from axially displacing relative to the output shaft 211 of the first driving mechanism, that is, the output shaft of the first motor, two first limiting members 2111 are provided on the output shaft 211 of the first driving mechanism, which are respectively located on both sides of the grinding wheel 22, and the grinding wheel 22 is axially limited. In order to prevent the sample 5 carrier 42 from axially displacing relative to the output shaft 411 of the second driving mechanism, that is, the output shaft of the second motor, two second limiting members 4111 are provided on the output shaft 411 of the second driving mechanism, which are respectively located on both sides of the sample 5 carrier 42, and the sample 5 carrier 42 is axially limited. Among them, the first limiting member 2111 and the second limiting member 4111 can be flexible members such as silicone rings or rubber rings.

[0052] It can be understood that the first driving mechanism 21 can also be a first motor and a first transmission mechanism, and the grinding wheel 22 is connected to the output shaft of the first motor through the first transmission mechanism. The second driving mechanism 41 can also be a second motor and a second transmission mechanism, and the sample 5 carrier 42 is connected to the output shaft of the second motor through the second transmission mechanism.

[0053] The sample 5 carrier 42 may include one sample slot 42121, or may include two or more sample slots 42121. When the sample 5 carrier 42 includes two or more sample slots 42121, multiple specimens can be tested simultaneously during a grinding test, thereby avoiding the problem of large randomness of single test results, improving the reliability and stability of the test results, and greatly shortening the test cycle and saving test costs.

[0054] In some embodiments of the present application, reference Figure 3 , Figure 3 The axial side view of the rotating disk 421 in one embodiment is shown. The sample carrier 42 includes at least two sample slots 42121 , and the sample slots 42121 at different positions overlap with the trajectory of the sample carrier 42 rotating one circle.

[0055] In this embodiment, the sample slots 42121 at different positions overlap with the trajectory of the sample 5 carrier 42 rotating one circle, so that when the sample 5 is of the same size and shape, even if it is placed in different sample slots 42121, when it contacts the grinding wheel 22, it can ensure that the contact position and contact area are the same, that is, it can ensure that the grinding environment of the samples 5 in different sample slots 42121 is the same, and they can all be ground to the same degree. In view of this, according to the wear ratio calculation formula, multiple wear ratio calculation results are obtained through one test, and the average value is taken to make the wear ratio more reliable. Compared with a single repeated test, some systematic errors can be avoided, such as changes in the environment, changes in the operator's operating techniques, etc., and the accuracy of the test results can be further improved.

[0056] In addition, since the test environment of sample 5 at different positions is the same, the wear ratio should be consistent. When the wear ratio differs greatly, it can also reflect the quality stability of the batch of samples.

[0057] In some embodiments of the present application, reference Figure 3 , Figure 4 , Figure 5 , Figure 4 is a schematic axial view of a sample 5 carrier 42 in one embodiment, Figure 5 The figure is a schematic diagram of the axial side of the pressing plate 4221 in one embodiment. The sample 5 carrier 42 includes a rotating disk 421 and a pressing assembly 422. The center of the rotating disk 421 has an axial hole 42111 for connecting with the output shaft 411 of the second driving mechanism. The rotating disk 421 is provided with at least two sample slots 42121. One end of the sample slot 42121 passes through the top wall 42122 of the rotating disk 421 and is connected to the outside. The pressing assembly 422 is detachably connected to the rotating disk 421 and is used to press the sample 5 in the sample slot 42121.

[0058] In this embodiment, reference Figure 1 , Figure 3 and Figure 4 The top wall 42122 of the rotating disk 421 refers to the side wall away from the shaft hole 42111. One end of the sample slot 42121 penetrates the top wall 42122 of the rotating disk 421, so that when the sample 5 is placed in the sample slot 42121, it can extend from the top wall 42122, so as to contact the grinding wheel 22 for grinding. The clamping assembly 422 is detachably connected to the rotating disk 421, so as to facilitate the replacement of the sample 5.

[0059] Optionally, refer to Figure 3 and Figure 6 , Figure 6 4 is a schematic diagram of the structure of the rotating disk 421 in another embodiment. The structure of the rotating disk 421 can be a circular disk structure with an axis hole 42111, or a square disk or polygonal structure with an axis hole 42111.

[0060] Further, refer to Figure 3 In order to prevent the sample 5 carrier 42 from rotating relative to the output shaft 411 of the second driving mechanism, a groove 42112 structure is provided on the side of the body 4211 that contacts the output shaft, and a protrusion structure is provided on the output shaft 411 of the second driving mechanism. The groove 42112 cooperates with the protrusion to limit the sample 5 carrier 42 from rotating relative to the output shaft 411 of the second driving mechanism. Of course, a protrusion structure can also be provided on the side of the body 4211 that contacts the output shaft, and a groove 42112 structure is provided on the output shaft 411 of the second driving mechanism. The groove 42112 cooperates with the protrusion to limit the sample 5 carrier 42 from rotating relative to the output shaft 411 of the second driving mechanism.

[0061] The sample slot 42121 can be arranged on one of the surfaces of the rotating disk 421 along the thickness direction, so that when the sample 5 is placed in the sample slot 42121, the placement position of the sample 5 can be visually observed, and it is convenient to place, and there is enough operating space when fixing the sample 5, so it is more convenient to fix or disassemble. At this time, the clamping assembly 422 can include a clamping plate and several fasteners 4222, and the clamping plate is used to block the top opening of the sample slot 42121, which is the opening of the sample slot 42121 in the thickness direction of the rotating disk 421. The fasteners 4222, such as bolts and nuts, are used to detachably connect the clamping plate to the rotating disk 421. The sample groove 42121 can also be arranged inside the rotating disk 421, and one end of the sample groove 42121 passes through the top wall 42122 and extends in the direction away from the top wall 42122, that is, the sample groove 42121 is embedded in the edge position of the rotating disk 421 away from the shaft hole 42111. At this time, the clamping assembly 422 can only include a few fasteners 4222, such as bolts and studs, which pass through the rotating disk 421 from one side along the thickness direction of the rotating disk 421 to contact the sample 5, so as to tighten the sample 5 to fix it.

[0062] In some embodiments of the present application, reference Figure 3 , Figure 6 and Figure 7 , Figure 7 FIG. 4 is a schematic diagram of the structure of the rotating disk 421 in another embodiment. Figure 3 , Figure 6 and Figure 7The difference is that the number of protrusions 4212 is different, and Figure 3 The middle body 4211 is a square plate structure. Figure 6 and Figure 7 The middle body 4211 is a disc structure. The rotating disk 421 includes a body 4211 and at least two protrusions 4212, the shaft hole 42111 is arranged at the center of the body 4211, the protrusions 4212 are spaced and distributed on the periphery of the body 4211 and connected to the body 4211, each protrusion 4212 is provided with at least one sample slot 42121, one end of the sample slot 42121 passes through the top wall 42122 of the protrusion 4212 and communicates with the outside.

[0063] In this embodiment, the rotating disk 421 is a special-shaped structure. The rotating disk 421 includes at least two protrusions 4212, such as two or three, etc. The protrusions 4212 can be evenly arranged along the circumference of the main body 4211, so that the structure of the rotating disk 421 is more symmetrical. During the rotation process, the forces at different positions of the rotating disk 421 are more uniform, which is conducive to improving the rotation stability of the rotating disk 421. It can also reduce the vibration and imbalance of the rotating disk 421 during operation, thereby reducing wear and failure rate. This helps to extend the service life of the rotating disk 421 and reduce the frequency of maintenance and repair.

[0064] Since the protruding portion 4212 is protruding from the main body 4211 , the sample groove 42121 can be embedded in the top wall 42122 of the protruding portion 4212 , or the sample groove 42121 can be set on the four side walls of the protruding portion 4212 .

[0065] In a possible embodiment, reference Figure 3 The protruding portion 4212 includes two first side walls 42123 arranged in sequence along the rotation direction and two second side walls 42124 arranged opposite to each other perpendicular to the rotation direction, and the sample groove 42121 is arranged on one or both of the first side walls 42123 .

[0066] In this embodiment, the sample groove 42121 is disposed on one or both side walls of the protruding portion 4212 along the rotation direction. Figure 3 As shown, the width direction of the sample slot 42121 is parallel to the axial direction of the shaft hole 42111. When the sample 5 is placed in the sample slot 42121, the translation mechanism 3 drives the test mechanism 4 to move along the second direction Y, that is, to move in a direction parallel to the axial direction of the shaft hole 42111. In this way, the reciprocating motion of the translation mechanism 3 along the second direction Y can be used to grind the front end surface of the sample 5 back and forth along the width direction of the sample 5 in sequence, thereby ensuring the flatness of the grinding surface and avoiding the occurrence of chipping, thereby ensuring the accuracy of the test results.

[0067] In some embodiments of the present application, reference Figure 4and Figure 5 The pressing assembly 422 includes a pressing plate 4221 and a fastener 4222 . The pressing plate 4221 is pressed on the sample groove 42121 . The fastener 4222 detachably connects the pressing plate 4221 to the protrusion 4212 .

[0068] In this embodiment, the pressure plate 4221 is used to seal the top opening of the sample groove 42121 and contact the top surface of the sample 5. The pressure plate 4221 is fixed to the protrusion 4212 through a detachable connection with the fastener 4222, thereby pressing the sample 5. The structure is simple and easy to disassemble.

[0069] In some embodiments of the present application, reference Figure 3 , Figure 8 and Fig. 9 , Figure 8 is a schematic structural diagram of the rotating disk 421 in yet another embodiment, Fig. 9 FIG. 4 is a schematic diagram of the structure of the rotating disk 421 in another embodiment. Taking one pair of protrusions 4212 as an example, Figure 8 The protrusion 4212 is symmetrical about the dotted line A passing through the center of the axial hole 42111. Fig. 9 The protrusion 4212 is located on both sides of the dotted line A of the center of the shaft hole 42111. Figure 3 The position relationship between the middle protrusion 4212 and Fig. 9 In the above embodiment, the angle between two adjacent protrusions 4212 is 90°, and they are evenly distributed along the circumference of the main body 4211 .

[0070] In this embodiment, four protrusions 4212 are provided on the periphery of the main body 4211, and the angle between adjacent protrusions 4212 is approximately 90°, and a slight deviation is allowed, for example, the range of variation can be 85° to 95°. The protrusions 4212 are evenly distributed on the periphery of the main body 4211, so that the structure of the rotating disk 421 is more symmetrical. During the rotation process, the forces at different positions of the rotating disk 421 are more even, which is conducive to improving the rotation stability of the rotating disk 421. It can also reduce the vibration and imbalance of the rotating disk 421 during operation, thereby reducing wear and failure rate. This helps to extend the service life of the rotating disk 421 and reduce the frequency of maintenance and repairs.

[0071] In some embodiments of the present application, reference Figure 3 and Fig. 9 One of the first side walls 42123 of the two opposite protrusions 4212 is collinear and its extension line passes through the center of the axial hole 42111, and the other first side wall 42123 is located on both sides of the extension line.

[0072] In this embodiment, the relative protrusions 4212 are arranged in a staggered manner with a first side wall 42123 being collinear and passing through the center of the axial hole 42111. This windmill-shaped design can disperse the force when the turntable rotates, reducing the uneven rotation or offset caused by a single force point. This design makes the turntable rotate more smoothly and reduces the vibration and noise caused by imbalance.

[0073] In some embodiments of the present application, reference Figure 3 , Figures 6 to 9 The cross section of the main body 4211 is a circle or a square with an axial hole 42111 in the center.

[0074] The main body 4211 is circular, and the structure of the rotating disk 421 is simpler. The main body 4211 is square, and the volume of the rotating disk 421 is smaller, which can reduce the power to drive the rotating disk 421 to rotate.

[0075] In some embodiments of the present application, reference Figure 3 , Figures 6 to 9 The top wall 42122 of the protrusion 4212 is arc-shaped, and the curvature radii of the protrusions 4212 at different positions are equal.

[0076] The curvature radii of the top walls 42122 of the protrusions 4212 at different positions are equal, that is, the protrusions 4212 are on the circumference of the same circle with the same radius, so that the distance between the position of the rotating disk 421 after one rotation and the grinding wheel 22 is fixed, which can avoid the risk of collision between the protrusion 4212 and the grinding wheel 22.

[0077] In some embodiments of the present application, reference Figure 3 and Figure 5 The inner side wall of one end of the sample groove 42121 close to the top wall 42122 is arc-shaped.

[0078] In this embodiment, the arc of the inner wall of the sample groove 42121 near the top wall 42122 is consistent with the arc of the sample 5, which is easier to position and install the sample 5. After being pressed by the pressing component 422, the sample 5 is in close contact with the inner wall of the sample groove 42121, and is not easy to shake, which has a better fixing effect on the sample 5.

[0079] Since the inner side wall of one end of the sample groove 42121 close to the top wall 42122 is arc-shaped, the end of the sample 5 extending out of the sample groove 42121 is arc-shaped. Fig.10 As shown, sample 5 has no sharp corners, and is less likely to chip or lose large grains during the grinding process, thereby improving data accuracy.

[0080] In some embodiments of the present application, reference Figure 3 and Figure 5The sample groove 42121 can be composed of a first sub-groove 42121a and a second sub-groove 42121b. The first sub-groove 42121a is located on the protrusion 4212, and the second sub-groove 42121b is located on the pressing plate 4221, wherein the depth of the second sub-groove 42121b can be less than the depth of the first sub-groove 42121a, and the sum of the depths of the two is slightly less than or equal to the thickness of sample 5.

[0081] Optionally, refer to Figure 1 and Figure 2 The wear resistance test device for superhard materials also includes a dust removal device (not shown in the figure). The dust removal port 6 of the dust removal device is located near the grinding wheel 22. The dust removal device can be a negative pressure adsorption device, and the dust is sucked away through the dust removal port 6. In order to better prevent dust from flying, a protective cover can be set on the outside of the wear resistance test device for superhard materials. Even if a small amount of dust is not sucked away by the dust removal device, it will not fly around. In addition, the protective cover can also protect the operator and prevent accidental injury to the operator.

[0082] A second aspect of the embodiment of the present application further provides a method for testing the wear resistance of a superhard material, using the above-mentioned superhard material wear resistance testing device, comprising the following steps:

[0083] Step S1: providing a superhard material sample 5.

[0084] Step S2: Cleaning the superhard material sample 5.

[0085] Taking the superhard material sample 5 as diamond as an example, the specific steps are as follows: cut multiple diamond samples 5 by laser cutting the large diamond piece whose wear resistance needs to be tested, observe the integrity of the cutting edge of the cut diamond sample 5 under a microscope, and after ensuring the integrity of the edge, put it into a beaker and ultrasonically treat it with alcohol for 10 minutes, take it out with tweezers and put it into an oven for drying. After drying, observe the surface under a microscope to see if there is any contamination. If there is no contamination, put it in a clean ziplock bag. If there is contamination, repeat the above process.

[0086] Step S3: Weigh the superhard material sample 5 and the grinding wheel 22 respectively, and record their respective values.

[0087] The multiple diamond samples 5 tested in this test were weighed using a balance with a graduation value of 0.00001g, and the method of weighing more than 5 times and averaging was adopted to ensure data accuracy, and finally the total weight of the multiple test samples 5 was obtained.

[0088] The grinding wheel 22 is weighed using a balance with a graduation value of 0.001 g, and the average value is calculated after multiple weighings to ensure data accuracy. The diameter of the grinding wheel is measured using a vernier caliper and recorded.

[0089] Step S4: fix the superhard material sample 5 in the sample groove 42121 , and one end of the superhard material sample 5 extends out of the sample groove 42121 .

[0090] Place the diamond sample 5 to be tested in the sample slot 42121, cover the sample 5 lightly with the pressing plate 4221 and tighten the screws to ensure that the sample 5 will not loosen or fall off during the test. Install multiple diamond samples 5 on the sample 5 carrier 42 piece by piece according to this step. Install the assembled sample 5 carrier 42 on the output shaft 411 of the second drive mechanism and tighten it.

[0091] Step S5: Connect the sample carrier 42 to the output shaft 411 of the second driving mechanism, and connect the grinding wheel 22 to the output shaft 211 of the first driving mechanism.

[0092] The sample carrier 42 loaded with the sample 5 is mounted on the output shaft 411 of the second driving mechanism and tightened. The weighed grinding wheel 22 is mounted on the output shaft 211 of the first driving mechanism and tightened.

[0093] Step S6: driving the sample 5 carrier 42 to move two-dimensionally via the translation mechanism 3 , so that the superhard material sample 5 approaches the grinding wheel 22 .

[0094] The position of the sample 5 carrier 42 is adjusted by the translation mechanism 3 to ensure that the sample 5 carrier 42 does not contact the grinding wheel 22 when the second driving mechanism 41 is turned on, thereby eliminating the impact of the initial start-up of the second driving mechanism 41 on the test.

[0095] Step S7: When the distance between the superhard material sample 5 and the grinding wheel 22 reaches a preset value, the second driving mechanism 41 and the first driving mechanism 21 are turned on.

[0096] Step S8: A part of the translation mechanism 3 drives the test mechanism 4 to feed in a direction perpendicular to the axial direction of the grinding wheel 22 at a first preset speed, so that the superhard material sample 5 contacts the grinding wheel 22. At the same time, another part of the translation mechanism 3 drives the test mechanism 4 to reciprocate in a direction parallel to the axial direction of the grinding wheel 22 at a second preset speed to perform a grinding test.

[0097] Start the second drive mechanism 41 and the first drive mechanism 21, and start the translation mechanism 3 after observing that they are running normally. The second drive mechanism 41 is driven by the translation mechanism 3 to reciprocate along the second direction Y, and the second drive mechanism 41 is driven to feed along the first direction X, so that the edge of the width direction of the diamond sample 5 is gradually ground. The measured grinding wheel diameter is input into the system, and the system controls the first drive mechanism 21 to keep the grinding wheel 22 running at a constant linear speed; the test starts when the force sensor on the translation mechanism 3 has a numerical output, and the equipment stops running when the set time is reached.

[0098] Step S9: After a preset time, stop the grinding test, take out the superhard material sample 5, clean and dry it, and weigh the superhard material sample 5 after grinding.

[0099] Place the removed diamond sample 5 into a clean beaker and use alcohol ultrasound for 10 minutes. Take it out with tweezers and dry it in an oven. After drying, observe the surface under a microscope to ensure that there is no contamination. If there is any contamination, repeat the above process.

[0100] The scale division value is 0.00001g for weighing. Multiple samples 5 are weighed multiple times more than 5 times to calculate the average value to ensure data accuracy, and finally the total weight of the multiple samples 5 is calculated.

[0101] In order to ensure the accuracy of the test results, it can be verified by the grinding width L. The grinding width L is measured under a microscope, such as Fig.11 As shown, if the width value is less than 200 μm, sample 5 will be reselected and the grinding time will be increased for retesting. This is because when the grinding width L is less than 200 μm, the randomness is greater.

[0102] Step S10: remove the grinding wheel 22, blow away the dust on the surface, and weigh the grinding wheel 22 after grinding.

[0103] The removed grinding wheel 22 is blown away with an air gun to remove the dust on the surface, and the grinding wheel is weighed using a balance with a graduation value of 0.001g. The average value is calculated after multiple weighings to ensure data accuracy.

[0104] Step S11: Calculate the wear ratio E, where the wear ratio E=the weight difference before and after the grinding wheel test / the total weight difference before and after the test of the plurality of superhard material samples 5.

[0105] In some embodiments of the present application, one end of the superhard material sample 5 is arc-shaped, and the arc-shaped end extends out of the sample groove 42121.

[0106] In this embodiment, a sample 5 with an arc-shaped end is used for grinding testing. Sample 5 has no sharp corners, and is less likely to cause corner chipping or large grain loss during the grinding process, thereby improving data accuracy.

[0107] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0108] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0109] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A wear resistance testing device for superhard materials, characterized in that: include: Base (1); A grinding mechanism (2), comprising a first driving mechanism (21) and a grinding wheel (22), wherein the first driving mechanism (21) is arranged on the base (1), and the grinding wheel (22) is connected to an output shaft (211) of the first driving mechanism; A translation mechanism (3) is arranged on the base (1); The testing mechanism (4) comprises a second driving mechanism (41) and a sample (5) carrier (42), wherein the second driving mechanism (41) is arranged on the translation mechanism (3), and the translation mechanism (3) can drive the testing mechanism (4) to perform two-dimensional reciprocating motion, so that the sample (5) carrier (42) approaches the grinding wheel (22), the sample (5) carrier (42) is connected to the output shaft (411) of the second driving mechanism, the second driving mechanism (41) is used to drive the sample (5) carrier (42) to rotate, the output shaft (211) of the first driving mechanism is parallel to the output shaft (411) of the second driving mechanism, and the sample (5) carrier (42) comprises at least one sample slot (42121).

2. The wear resistance testing device for superhard materials according to claim 1, characterized in that: The sample (5) carrier (42) comprises at least two sample slots (42121), and the sample slots (42121) at different positions overlap with the tracks of the sample (5) carrier (42) when it rotates one circle.

3. The wear resistance testing device for superhard materials according to claim 2, characterized in that: The sample (5) carrier (42) comprises: a rotating disk (421), wherein the center of the rotating disk (421) has an axial hole (42111) for connecting to the output shaft (411) of the second driving mechanism, and the rotating disk (421) is provided with at least two sample slots (42121), and one end of the sample slot (42121) passes through the top wall (42122) of the rotating disk (421) and is in communication with the outside; A pressing assembly (422) is detachably connected to the rotating disk (421) and is used to press the sample (5) in the sample slot (42121).

4. The wear resistance testing device for superhard materials according to claim 3, characterized in that: The rotating disk (421) comprises a main body (4211) and at least two protrusions (4212), the axial hole (42111) is arranged at the center of the main body (4211), the protrusions (4212) are distributed at intervals on the periphery of the main body (4211) and are connected to the main body (4211), each of the protrusions (4212) is provided with at least one sample groove (42121), and one end of the sample groove (42121) passes through the top wall (42122) of the protrusion (4212) and is connected to the outside.

5. The wear resistance testing device for superhard materials according to claim 4, characterized in that: The protruding portion (4212) comprises two first side walls (42123) arranged in sequence along the rotation direction and two second side walls (42124) arranged opposite to each other perpendicular to the rotation direction, and the sample groove (42121) is arranged on one or both of the first side walls (42123).

6. The wear resistance testing device for superhard materials according to claim 5, characterized in that: The pressing assembly (422) includes a pressing plate (4221) and a fastener (4222), wherein the pressing plate (4221) is pressed on the sample slot (42121), and the fastener (4222) detachably connects the pressing plate (4221) and the protrusion (4212).

7. The wear resistance testing device for superhard materials according to claim 5, characterized in that: The angle between two adjacent protrusions (4212) is 90°, and they are evenly distributed along the circumference of the main body (4211).

8. The wear resistance testing device for superhard materials according to claim 7, characterized in that: One of the first side walls (42123) of the two opposite protrusions (4212) is collinear and an extension line passes through the center of the axial hole (42111), and the other first side wall (42123) is located on both sides of the extension line.

9. The wear resistance testing device for superhard materials according to claim 4, characterized in that: The cross section of the main body (4211) is circular or square with an axial hole (42111) in the center.

10. The wear resistance testing device for superhard materials according to any one of claims 4 to 9, characterized in that: The top wall (42122) of the protruding portion (4212) is arc-shaped, and the curvature radii of the protruding portion (4212) at different positions are equal.

11. The wear resistance testing device for superhard materials according to any one of claims 1 to 9, characterized in that: The inner side wall of one end of the sample groove (42121) close to the top wall (42122) is arc-shaped.

12. A method for testing the wear resistance of a superhard material, using the superhard material wear resistance testing device according to any one of claims 1 to 11, characterized in that: The following steps are involved: Provide superhard material samples (5); Cleaning the superhard material sample (5); Weighing the superhard material sample (5) and the grinding wheel (22) respectively, and recording their respective values; The superhard material sample (5) is fixed in the sample groove (42121), and one end of the superhard material sample (5) extends out of the sample groove (42121); Connecting the sample carrier (42) to the output shaft (411) of the second driving mechanism, and connecting the grinding wheel (22) to the output shaft (211) of the first driving mechanism; The sample (5) carrier (42) is driven to move two-dimensionally by the translation mechanism (3), so that the superhard material sample (5) approaches the grinding wheel (22); When the distance between the superhard material sample (5) and the grinding wheel (22) reaches a preset value, the second driving mechanism (41) and the first driving mechanism (21) are turned on; A part of the translation mechanism (3) drives the testing mechanism (4) to feed in a direction perpendicular to the axial direction of the grinding wheel (22) at a first preset speed, so that the superhard material sample (5) contacts the grinding wheel (22), and at the same time, another part of the translation mechanism (3) drives the testing mechanism (4) to reciprocate in a direction parallel to the axial direction of the grinding wheel (22) at a second preset speed, so as to perform a grinding test; After a preset time, the grinding test is stopped, the superhard material sample (5) is taken out, cleaned and blown dry, and the ground superhard material sample (5) is weighed; The grinding wheel (22) is removed, dust on the surface is blown away, and the grinding wheel (22) after grinding is weighed; Calculate the wear ratio E, wear ratio E=weight difference before and after the grinding wheel test / total weight difference before and after the test of the plurality of superhard material samples (5).

13. The method for testing the wear resistance of superhard materials according to claim 12, characterized in that: One end of the superhard material sample (5) is in an arc shape, and the arc-shaped end extends out of the sample groove (42121).

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