Device for judging wear resistance of material and measuring method thereof

Abstract

The invention belongs to the technical field of wear resistance measurement, and discloses a device for judging the wear resistance of a material and a measurement method thereof.The device comprises a limiting sliding mechanism, and a rod is arranged on the limiting sliding mechanism in a sliding mode; a clamp body is fixed to one end of the rod, a clamp positioning block is arranged on the clamp body, and a cutter blank containing groove is formed between the clamp body and the clamp positioning block and used for obliquely containing a cutter blank according to a specific angle. A clamp pressing plate is arranged on the clamp positioning block and is used for clamping and fixing the cutter blank in the cutter blank placing groove; the rod is arranged on the limiting sliding mechanism through a spring and used for pushing, abutting against, clamping and fixing a cutter blank on the rod. The method solves the problems of complex measurement operation and high use cost of the traditional measurement method, and is suitable for measuring the wear resistance of the material.

Description

Technical Field

[0001] The invention relates to the technical field of wear resistance measurement, in particular to a device for determining the wear resistance of a material and a measurement method thereof. Background Art

[0002] The method usually used to measure the wear resistance of materials is to measure the wear ratio. The wear ratio is measured on the JS71-A wear ratio tester using a standard grinding wheel. The grinding wheel linear speed is 25m / s. According to the specified feed pressure, the grinding wheel wear is not less than 25g, and the sample wear is not less than 0.2mg. The ratio of the weight loss of the measurement sample and the grinding wheel is measured and calculated. This ratio is called the wear ratio.

[0003] However, in actual production, the measurement operation of the above traditional measurement method may be more complicated. For example, it is necessary not only to measure the weight of the grinding wheel before and after use, but also to measure the weight of the measurement sample before and after use, and then calculate the ratio. In addition, the wear ratio meter is a special instrument that requires certain professional knowledge and skills, which may cause certain difficulties in the training and operation process of the operator, and the equipment cost is relatively high. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of complicated measurement operation and high use cost of traditional measurement methods, and to provide a device for determining the wear resistance of materials and a measurement method thereof.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: The present invention provides a device for determining the wear resistance of a material and a measuring method thereof, comprising a limit sliding mechanism, wherein a rod is slidably provided on the limit sliding mechanism; a clamp body is fixed on one end of the rod, a clamp positioning block is provided on the clamp body, a knife blank placement groove is formed between the clamp body and the clamp positioning block, and is used for tilting and placing the knife blank at a specific angle; a clamp pressing plate is provided on the clamp positioning block, and is used for clamping and fixing the knife blank in the knife blank placement groove; the rod is arranged on the limit sliding mechanism through a spring, and is used for pushing the knife blank clamped and fixed on the rod.

[0006] Furthermore, the limiting sliding mechanism includes a base plate, on which a front support and a rear support are respectively provided, the rod slides through the front support and the rear support, the clamp is arranged on the front side of the front support, and the front end of the rod is plugged into and matched with the front support through a square bar.

[0007] Furthermore, the spring is passed through the rod and arranged between the front support and the rear support. A threaded section is also provided on the rod, and the threaded section is arranged close to the rear side of the front support. A nut is sleeved on the threaded section. One end of the spring abuts against the nut, and the other end of the spring abuts against the rear support.

[0008] Furthermore, a tension gauge hanging hole is provided on the rear end of the rod.

[0009] A method for measuring the wear resistance of a material, the method comprising the following specific steps: S1. Select multiple Sanqiang 240# resin grinding wheels from the same batch, use tool grinding to flatten all the grinding wheels, and set aside for use; S2. Select a blade blank with a thickness of 1.6 mm as a measurement sample, and place the test sample in the blade blank placement slot so that the square blade blank edge faces the grinding wheel, fasten the clamp pressure plate so that the blade blank is clamped and fixed at the front end of the rod, and then fix the measuring device close to the grinding wheel; S3. Tighten the nut, push the rod forward under the elastic force of the spring, and then push the blade against the grinding wheel, so that the gap between the nut and the front support is 8.5mm, then hook the dynamometer hanging hole with a spring scale, and calibrate the grinding pressure of the blade to 1.2KG; S4, grinding each blade blank by the above method for 30 seconds; S5. Measure the wear area a of the blade blank on the KEYENCE equipment and compare the wear area a with the evaluation standard line. S6. After grinding is completed, loosen the nut and release the spring.

[0010] The beneficial effects of the present invention are: By setting a limit sliding mechanism, used in conjunction with a spring and a nut, the blade blank can be ground at a constant pressure, and the method of measuring the grinding area after grinding for a fixed time to determine the quality of the wear resistance is more convenient, effectively reducing the number of variables in the measurement process, and making the operation more convenient and simple, so that the operator can operate more quickly and skillfully. Moreover, the simple structure reduces the production cost, thereby lowering the use cost and facilitating widespread use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the structure of the measuring device provided by the present invention; Figure 2 for Figure 1 A front view of Figure 3 It is a structural schematic diagram of the rod in the present invention; Figure 4 for Figure 3 A front view of Figure 5 This is a schematic diagram of the wear area displayed on the Keyence equipment after the blade is ground.

[0012] In the figure, 1, bottom plate; 11, screw hole; 2, front support; 3, rear support; 4, rod; 41, mounting hole; 42, dynamometer hanging hole; 43, square bar; 431, fixture installation part; 44, threaded section; 5, handle; 6, spring; 7, nut; 8, clamp body; 9, fixture positioning block; 10, fixture pressure plate; 101, blade blank placement slot; 111, limit sliding mechanism. DETAILED DESCRIPTION

[0013] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0014] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0015] Example 1 like Figure 1~Figure 4 As shown, A device for determining the wear resistance of a material, comprising a limit sliding mechanism 111. Specifically, the limit sliding mechanism 111 comprises a bottom plate 1, on which a plurality of screw holes 11 are provided, which are convenient for being fixedly connected with a mounting platform. A front support 2 and a rear support 3 are respectively provided on the bottom plate 1. Preferably, the front support 2 and the rear support 3 are arranged side by side front and back, and a rod 4 is slidably installed through the front support 2 and the rear support 3. The front end of the rod 4 is plugged and matched with the front support 2 through a square bar 43. Through this solution, the plug-in match of the square structure can limit the rotation of the rod 4, so that the rod 4 can only slide forward and backward, and the stability is better; Furthermore, a clamp mounting portion 431 is formed on the vertical plane of the square bar 43 on the front end of the rod 4, and a clamp body 8 is vertically arranged on the clamp mounting portion 431. Specifically, the clamp body 8 is arranged on the front side of the front support 2. Further, a clamp positioning block 9 is provided on the clamp body 8. Preferably, a notch is provided at the upper left corner of the clamp positioning block 9, and a blade placement groove 101 is formed between the notch on the clamp positioning block 9 and the clamp body 8, which is used to tilt the blade so that the edge of the blade is located at the front side for grinding; a clamp pressing plate 10 is provided on the clamp positioning block 9, which is used to clamp and fix the blade in the blade placement groove 101; through this scheme, the block-shaped blade can be tilted and clamped in the blade placement groove 101 so that its edge faces forward, which is convenient for measuring the grinding area after subsequent grinding.

[0016] Furthermore, a threaded section 44 is provided on the rod 4 located at the rear side of the front support 2, and the threaded section 44 is provided close to the front support 2. A nut 7 is threadedly sleeved on the threaded section 44. A spring 6 is sleeved on the rod 4 located between the nut 7 and the rear support 3, and one end of the spring 6 abuts against the nut 7, and the other end of the spring 6 abuts against the rear support 3. Through this scheme, force transmission can be achieved after the nut 7 is connected to the rod 4, so that the elastic force of the spring 6 can act on the rod 4, thereby applying and adjusting the grinding pressure on the knife blank at the front end.

[0017] Furthermore, a dynamometer hanging hole 42 and a mounting hole 41 are provided on the rear end of the rod 4. The mounting hole 41 is provided on the front side of the dynamometer hanging hole 42. A handle 5 is mounted on the mounting hole 41. Through this solution, it is convenient to hook an external dynamometer to measure the grinding pressure applied by the spring 6; and it is convenient to pull the rod 4 forward and backward.

[0018] Example 2 A method for determining the wear resistance of a material, such as measuring polycrystalline diamond material, includes the following specific steps: S1. Select multiple Sanqiang 240# resin grinding wheels from the same batch, use tool grinding to flatten all the grinding wheels, and set aside for use; S2. For the convenience of material collection, multiple polycrystalline diamond blade blanks with a common thickness of 1.6 mm are selected as measurement samples, and the test samples are placed in the blade blank placement groove 101, so that the square blade blank edge faces the grinding wheel, and the clamp pressing plate 10 is fastened so that the blade blank is clamped and fixed at the front end of the rod 4, and then the measuring device is fixed on the external workbench close to the grinding wheel; S3, tighten the nut 7, push the rod 4 forward under the elastic force of the spring 6, and then push the blade against the grinding wheel, so that the gap between the nut 7 and the front support 2 is 8.5mm. Specifically, the gap is adjusted to 8.5mm here in order to more conveniently adjust the subsequent grinding pressure to a suitable range, and then use a spring scale to hook the tension gauge hanging hole 42, and calibrate the grinding pressure of the blade to 1.2KG. Specifically, the grinding pressure is 1.2KG here to ensure that the subsequent grinding time required to achieve the same grinding effect will not be too long or too short, to prevent the time from being too short and inconvenient to card the meter, resulting in a large error, and the time from being too long and wasting time; S4, start the grinding wheel, and grind each blade blank for 30 seconds using the above method; S5. Measure the wear area a of the blade blank on the Keyence equipment. Specifically, the Keyence equipment is an existing measuring device that can measure the area of ​​any polygon. The wear area a here = blade blank thickness (1.6mm) × wear width. In order to reduce the influence of the error fluctuation of the blade blank thickness, the evaluation standard is based on the wear area a. For example, Figure 5 As shown, when the wear area a is less than 0.4 mm 2 (Judgment standard line) is qualified, higher than 0.4mm 2 (Judgment standard line) means failure; it should be noted here that if the wear resistance of other materials is measured, the judgment standard line is the grinding area obtained by grinding the standard qualified sample according to the above steps as the judgment standard line; S6. After grinding is completed, loosen the nut 7 and release the spring 6.

[0019] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A device for determining the wear resistance of a material, characterized in that: The invention comprises a limit sliding mechanism (111), wherein a rod (4) is slidably provided on the limit sliding mechanism (111); a clamp body (8) is fixed on one end of the rod (4), a clamp positioning block (9) is provided on the clamp body (8), a knife blank placement groove (101) is formed between the clamp body (8) and the clamp positioning block (9), and is used for tilting the knife blank so that the edge of the knife blank is located at the front side for grinding; a clamp pressing plate (10) is provided on the clamp positioning block (9), and is used for clamping and fixing the knife blank in the knife blank placement groove (101); the rod (4) is arranged on the limit sliding mechanism (111) through a spring (6), and is used for pushing the knife blank clamped and fixed on the rod (4).

2. A device for determining the wear resistance of a material according to claim 1, characterized in that: The limit sliding mechanism (111) comprises a bottom plate (1), on which a front support (2) and a rear support (3) are respectively provided, the rod (4) slides through the front support (2) and the rear support (3), the clamp body (8) is provided on the front side of the front support (2), and the front end of the rod (4) is plugged into and matched with the front support (2) via a square bar (43).

3. A device for determining the wear resistance of a material according to claim 2, characterized in that: The spring (6) is passed through the rod (4) and is arranged between the front support (2) and the rear support (3). The rod (4) is also provided with a threaded section (44). The threaded section (44) is arranged close to the rear side of the front support (2). A nut (7) is sleeved on the threaded section (44). One end of the spring (6) abuts against the nut (7), and the other end of the spring (6) abuts against the rear support (3).

4. A device for determining the wear resistance of a material according to claim 3, characterized in that: A tension gauge hanging hole (42) is provided on the rear end of the rod (4).

5. A method for determining the wear resistance of a material, characterized in that: The specific steps of this measurement method are as follows: S1. Select multiple Sanqiang 240# resin grinding wheels from the same batch, use tool grinding to flatten all the grinding wheels, and set aside for use; S2. Select a blade blank with a thickness of 1.6 mm as a measurement sample, and place the test sample in the blade blank placement slot so that the square blade blank edge faces the grinding wheel, fasten the clamp pressure plate so that the blade blank is clamped and fixed at the front end of the rod, and then fix the measuring device close to the grinding wheel; S3. Tighten the nut, push the rod forward under the elastic force of the spring, and then push the blade against the grinding wheel, so that the gap between the nut and the front support is 8.5mm, then hook the dynamometer hanging hole with a spring scale, and calibrate the grinding pressure of the blade to 1.2KG; S4, grinding each blade blank by the above method for 30 seconds; S5. Measure the wear area a of the blade blank on the KEYENCE equipment and compare the wear area a with the evaluation standard line. S6. After grinding is completed, loosen the nut and release the spring.

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