Fracture toughness microscopic incision equipment for fine ceramic material

Abstract

The utility model relates to fine ceramic material fracture toughness microscopic incision equipment which comprises a frame, the frame is connected with a linear module, an incision assembly and an electric control assembly, and the linear module is connected with a clamp assembly and a cooling assembly. The cutting device has the advantages of being capable of meeting the precision requirement, low in cost, high in cutting efficiency and good in cutting quality.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic materials, especially to the field of ceramic material cutting, and specifically refers to a fine ceramic material fracture toughness micro incision device. Background Art

[0002] Due to their unique chemical, physical and mechanical properties, ceramic materials have a wide range of applications in various fields such as daily life, industrial production, construction, and aerospace. However, despite many advantages, ceramic materials also have a fatal drawback of high brittleness. How to increase the toughness of ceramic materials has always been the focus of ceramic material research.

[0003] In the work of toughening research on ceramic materials, the index of fracture toughness can most intuitively reflect the brittleness of ceramic materials, and this index is also directly related to the service life of ceramic materials. Therefore, accurate and reliable measurement of the fracture toughness of ceramic materials is the basis for toughening research on ceramic materials. Currently, in international standards (ISO), American standards (ASTM), and domestic standards (GB), the fracture toughness of ceramic materials is generally measured by three standard test methods, namely: single-edge pre-cracked beam method, surface crack flexure method, and chevron notch beam method. All three test methods require cutting a micro incision with a width not greater than 0.1 mm on the surface of the ceramic specimen.

[0004] Currently, when cutting ceramic specimens, the saw blade cutting method or laser cutting method is usually used. When using the saw blade cutting method to cut ceramic specimens, since the Mohs hardness of ceramics reaches above grade 9 and the hardness is extremely high, and the test method has high requirements for the accuracy of the incision, while the thickness of existing diamond saw blades is greater than the incision width required by the test method, so it cannot meet the requirements of the test method; in addition, since most ceramic materials are non-conductive, electrical discharge machining cannot be used. When using the laser cutting method to cut ceramic specimens, on the one hand, due to high requirements for the power, beam quality, etc. of the laser cutting equipment, the purchase cost of the laser cutting equipment is high, increasing the cost required for testing. On the other hand, due to the hard brittleness of ceramics, cracks and recast layers are likely to appear during the laser cutting process. Therefore, it is often necessary to repeatedly cut or preprocess the same position of the incision multiple times to complete the processing, resulting in low cutting efficiency. At the same time, when the laser cutting equipment cuts ceramics, high temperature will be generated in the cutting area, which is likely to cause micro thermal cracks and thermal stress on the ceramic surface, affecting the cutting quality of the incision. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a fine ceramic material fracture toughness micro incision device that can meet the accuracy requirements, has low cost, high cutting efficiency, and good cutting quality.

[0006] The present utility model is realized through the following technical solutions. A microscopic incision device for the fracture toughness of fine ceramic materials is provided, which includes a frame. The frame is connected with a linear module, an incision component, and an electric control component. The linear module is connected with a fixture component and a cooling component.

[0007] Compared with the prior art, the beneficial effects of the present utility model are as follows: The ceramic specimen can be fixed through the fixture component. Through the incision component, an incision with a width not greater than 0.1 mm that meets the requirements of the fracture toughness test method can be cut on the ceramic specimen. And compared with laser cutting, when the incision component cuts the ceramic specimen, the temperature of the cutting area is lower, so the cutting quality is better. At the same time, through the cooling component, the temperature of the cutting area can be further reduced to improve the cutting quality. In addition, through the incision component, the cutting operation of the incision of the ceramic specimen can be completed at one time without repeated cutting, greatly improving the cutting efficiency.

[0008] Preferably, the fixture component includes a second installation component connected to a first installation component. The second installation component is connected with a second limiting component and a third limiting component. The second limiting component and the third limiting component are both provided with openings. The second limiting component and the third limiting component are respectively connected with a first fastening component.

[0009] Preferably, the second installation component is connected with a first limiting component.

[0010] The beneficial effects of adopting the above preferred technical solutions are as follows: Through the openings provided on the second limiting component and the third limiting component, the ceramic specimen can be placed in the openings and the up, down, left, and right positions of the ceramic specimen can be limited. Through the first limiting component, the insertion depth of the ceramic specimen can be limited. Through the first fastening component, the ceramic specimen can be fixed after it is placed in place.

[0011] Preferably, the cooling component includes a third installation component and a water storage tank. The third installation component is connected with the first installation component. The third installation component is connected with a fourth installation component. The water storage tank is connected with the fourth installation component. The water storage tank is connected with an end cover.

[0012] Preferably, the cooling component further includes a switch component connected to the end cover. The switch component is connected with a water nozzle.

[0013] Preferably, the fourth installation component is provided with a first connection portion and a second connection portion. The first connection portion and the second connection portion of the fourth installation component are both fitted between the water storage tank and the end cover.

[0014] The beneficial effects of adopting the above preferred technical solutions are as follows: The water storage tank can store cooling water, so that during the cutting process of the ceramic sample, the cutting area of the ceramic sample can be continuously cooled. And through the switching component, the amount of cooling water flowing through the water nozzle can be controlled, reducing the waste of cooling water and the pollution of the cooling water to the surrounding environment while ensuring the cooling effect. Since the first connecting portion and the second connecting portion of the fourth mounting component are both fitted between the water storage tank and the end cover, the installation or disassembly of the water storage tank and the fourth mounting component can be achieved by connecting or separating the end cover and the water storage tank, which is convenient for removing the water storage tank to replenish the cooling water.

[0015] Preferably, the cutting assembly includes a cutting component and a sixth mounting component. The sixth mounting component is connected to the frame. The sixth mounting component is connected with a power device. The power device is fixedly connected with a second pulley. One end of the cutting component is fixedly connected to the second pulley and the other end is connected with a counterweight component.

[0016] Preferably, the cutting assembly further includes a fifth mounting component and a seventh mounting component respectively connected to the frame. The fifth mounting component is connected with an eighth mounting component. The eighth mounting component is rotatably connected with a first pulley. The seventh mounting component is rotatably connected with a third pulley. The cutting component respectively passes around the first pulley and the third pulley.

[0017] The beneficial effects of adopting the above preferred technical solutions are as follows: The counterweight component can apply a constant tension to the cutting component, so that the tension of the cutting component is always maintained within a suitable range, avoiding the influence of too small tension of the cutting component on the cutting efficiency and at the same time avoiding the influence of too large tension of the cutting component on the service life. Through the power device and the second pulley, the cutting component can be driven to reciprocate to realize the cutting of the ceramic sample. And compared with the cutting method of the one-way cyclic movement of the cutting component, the cutting method of the reciprocating movement of the cutting component can reduce the space required by the cutting assembly and make the structure of the cutting assembly more compact. Through the first pulley and the third pulley, the structure of the cutting assembly can be further made more compact. At the same time, it can avoid the inclination of the cut during the cutting of the ceramic sample and improve the cutting effect of the cut.

[0018] Preferably, the frame is connected with an outer protection plate. The electric control assembly includes a touch screen, an electric control component and a power switch connected to the outer protection plate. The touch screen is electrically connected to the linear module, the switching component and the power device respectively through the electric control component.

[0019] The beneficial effects of adopting the above preferred technical solutions are as follows: Through the electric control system, precise control can be respectively carried out on the linear module, the switch component, and the power device, thereby realizing automatic cutting of the ceramic sample. At the same time, since the touch screen is electrically connected to the linear module, the switch component, and the power device respectively through the electric control system, the parameters of the linear module, the switch component, and the power device can be set conveniently and quickly, and it is convenient to monitor the changes of various parameters in real time, and improve the cutting effect and cutting efficiency in time through the optimization and adjustment of the parameters. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the present utility model;

[0021] Figure 2 is Figure 1 the front view of;

[0022] Figure 3 It is a schematic partial structural diagram of the present utility model;

[0023] Figure 4 It is a schematic partial structural diagram of the present utility model from another angle;

[0024] Figure 5 It is a schematic structural diagram of the fixture assembly of the present utility model.

[0025] As shown in the figure:

[0026] 1. Frame, 2. Linear module, 3. First mounting component, 4. Fixture assembly, 5. Cooling component, 6. Cutting component, 7. Outer protection plate, 8. Touch screen, 9. Power switch; 401. Second mounting component, 402. First limiting component, 403. Second limiting component, 404. Third limiting component, 405. First fastening component;

[0027] 501. Third mounting component, 502. Fourth mounting component, 503. Water storage tank, 504. End cover, 505. Switch component, 506. Water nozzle;

[0028] 5021. First connecting part, 5022. Second connecting part;

[0029] 601. Fifth mounting component, 602. Sixth mounting component, 603. Seventh mounting component, 604. Eighth mounting component, 605. First pulley, 606. Second pulley, 607. Third pulley, 608. Cutting component, 609. Power device, 610. Counterweight component, 611. Second fastening component. Detailed Embodiments

[0030] The technical solutions in the embodiments of the present utility model will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment 1:

[0032] As Figures 1-5 shown, a micro-incision device for the fracture toughness of fine ceramic materials includes a frame 1, a linear module 2, a fixture assembly 4, an incision assembly 6, a cooling assembly 5, and an electric control assembly. The linear module 2 is vertically installed inside the frame 1, and the bottom of the linear module 2 is connected to the bottom of the frame 1. The fixture assembly 4 is connected to the slide plate of the linear module 2. The linear module 2 is provided with an upper limit component and a lower limit component, and the upper limit component and the lower limit component are respectively used to define the highest position and the lowest position of the slide plate of the linear module 2 during the lifting stroke. The upper limit component and the lower limit component can be components with the same or similar functions such as photoelectric switches and mechanical limit switches. In this embodiment, it is preferably to use photoelectric switches. Through the linear module 2, the fixture assembly 4 can be driven to move up and down between the highest position and the lowest position of the slide plate of the linear module 2.

[0033] The fixture assembly 4 includes a second mounting component 401. The slide plate of the linear module 2 is connected with a first mounting component 3, and the middle of the first mounting component 3 is connected with the second mounting component 401. The second mounting component 401 is sequentially connected with a first limit component 402, a second limit component 403, and a third limit component 404 from the side close to the linear module 2 to the side far from the linear module 2. The first limit component 402, the second limit component 403, and the third limit component 404 can all be mounted or disassembled on the second mounting component 401. The second limit component 403 and the third limit component 404 are both provided with openings and the positions of the openings are aligned with each other. The cross-sectional dimensions of the openings of the second limit component 403 and the third limit component 404 are the same as the cross-sectional dimensions of the ceramic specimen, and a first fastening component 405 for fixing the ceramic specimen is provided above the openings. And a space for cutting the ceramic specimen is left between the second limit component 403 and the third limit component 404. The insertion depth of the ceramic specimen can be limited by the first limit component 402.

[0034] The cooling component 5 includes a third mounting member 501 and a water storage tank 503. The first mounting member 3 is vertically connected to the third mounting member 501 at positions on both the left and right sides of the second mounting member 401. The top of the third mounting member 501 is connected to a fourth mounting member 502. The fourth mounting member 502 is provided with a first connection portion 5021 and a second connection portion 5022. The water storage tank 503 is connected with an end cover 504. The water storage tank 503 is located at the top of the first connection portion 5021 and the second connection portion 5022 of the fourth mounting member 502, and the end cover 504 is located at the bottom of the first connection portion 5021 and the second connection portion 5022 of the fourth mounting member 502. And when the end cover 504 is connected to the water storage tank 503, both the first connection portion 5021 and the second connection portion 5022 of the fourth mounting member 502 are fitted between the water storage tank 503 and the end cover 504. The bottom of the end cover 504 is connected with a switch member 505. The water storage tank 503 is communicated with the switch member 505. The switch member 505 can be a manual valve, an electric control valve, a pneumatic control valve or other components with the same or similar functions. In this embodiment, an electric control valve is preferably used. The bottom of the switch member 505 is connected with a water nozzle 506. The switch member 505 can control the communication state between the water storage tank 503 and the water nozzle 506. When the ceramic sample is fixed in the fixture assembly 4, the water nozzle 506 is located directly above the cutting position of the ceramic sample;

[0035] The frame 1 is provided with a first cross beam. The cutting assembly 6 includes a cutting member 608 and a fifth mounting member 601, a sixth mounting member 602, and a seventh mounting member 603 that are respectively connected to the first cross beam. In this embodiment, preferably, the cutting member 608 uses a diamond cutting wire. More preferably, the diameter of the diamond cutting wire is 0.08 mm. The sixth mounting member 602 and the seventh mounting member 603 are respectively located on both sides of the fifth mounting member 601. The fifth mounting member 601 is located below the second mounting member 401. The fifth mounting member 601 is connected with two eighth mounting members 604, and the two eighth mounting members 604 are respectively located on the left and right sides of the second mounting member 401. The eighth mounting member 604 is rotatably connected with a first pulley 605. When the second mounting member 401 moves to the lowest point along with the linear module 2, the height of the first pulley 605 is higher than the height of the second mounting member 401. And when the second mounting member 401 moves to the highest point along with the linear module 2, the height of the first pulley 605 is lower than the height of the second mounting member 401. The sixth mounting member 602 is connected with a power device 609. The power device 609 is fixedly connected with a second pulley 606. The power device 609 can be a device such as an electric motor, a pneumatic motor, or a hydraulic motor with the same or similar functions. In this embodiment, preferably, a servo motor is used. The second pulley 606 is provided with an opening for the cutting member 608 to pass through and a second fastening member 611 for fixing the cutting member 608. The seventh mounting member 603 is rotatably connected with a third pulley 607. The height of the highest point of the first pulley 605 is higher than the height of the lowest point of the second pulley 606. The height of the lowest point of the third pulley 607 is higher than the height of the highest point of the second pulley 606. One end of the cutting member 608 is fixed and wound around the second pulley 606. The other end of the cutting member 608 first passes around the bottom of the first pulley 605 on the side of the second mounting member 401 close to the second pulley 606, then crosses over the upper part of the second mounting member 401 and passes around the bottom of the first pulley 605 on the side of the second mounting member 401 close to the third pulley 607, and finally passes around the top of the third pulley 607 and is connected with a counterweight member 610. Through the counterweight member 610, a constant pulling force can always be applied to the cutting member 608 to keep the cutting member 608 under appropriate tension. In this embodiment, preferably, the weight of the counterweight member 610 is one-third of the tension of the cutting member 608;

[0036] The frame 1 is also connected with a spool holder. The spool holder is rotatably connected with a spool, and a plurality of cutting members 608 are wound around the spool;

[0037] A material receiving box is provided at the bottom of the frame 1 at a position below the fifth mounting member 601;

[0038] There is an outer protection plate 7 at the top of the frame 1. The outer protection plate 7 is equipped with a touch screen 8, an electric control component, and a power switch 9. The electric control component is electrically connected to the linear module 2, the switch component 505, and the power device 609 respectively.

[0039] The working process of the present utility model is as follows:

[0040] 1. Turn on the power switch 9;

[0041] 2. Make preparations before operation. Return the linear module 2 and the servo motor to zero, adjust the position of the slide plate of the linear module 2 and initialize it;

[0042] 3. Start the automatic mode, set parameters such as the opening time and opening frequency of the solenoid valve, set the position parameters of the linear module 2 during the working process, and set the cutting time parameters;

[0043] 4. Remove the cutting component 608 from the spool, route the cutting component 608 as required, wind and fix one end of the cutting component 608 on the second pulley 606, and connect the other end of the cutting component 608 to the counterweight component 610;

[0044] 5. Select and install the corresponding first limit component 402, second limit component 403, and third limit component 404 according to the length and cross-sectional size of the ceramic specimen;

[0045] 6. Insert the ceramic specimen through the openings of the second limit component 403 and the third limit component 404, limit the insertion depth of the ceramic specimen through the first limit component 402, and fix the ceramic specimen with the first fastening component 405;

[0046] 7. Start automatic operation to cut the ceramic specimen;

[0047] 8. After cutting is completed, loosen the first fastening component 405 and remove the ceramic specimen;

[0048] 9. Reset the equipment, turn off the equipment and clean up dirt such as powder and cooling water generated by cutting;

[0049] 10. Repeat steps 6 - 8 until all the cutting work of the ceramic specimens is completed;

[0050] When the length or cross-sectional size of the ceramic specimen changes, it is necessary to start from step 4;

[0051] The cutting time parameters can also be adjusted in step 7 or step 8.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fine ceramic material fracture toughness micro-incision device, characterized by: The invention comprises a frame (1), wherein the frame (1) is connected to a linear module (2), a cutout component (6), and an electric control component, and the linear module (2) is connected to a fixture component (4) and a cooling component (5).

2. A fine ceramic material fracture toughness micro-incision device according to claim 1, characterized in that: The clamp assembly (4) comprises a second mounting component (401) connected to the first mounting component (3); the second mounting component (401) is connected to a second limiting component (403) and a third limiting component (404); the second limiting component (403) and the third limiting component (404) are both provided with openings; the second limiting component (403) and the third limiting component (404) are both respectively connected to a first fastening component (405).

3. A fine ceramic material fracture toughness micro-incision device according to claim 2, characterized in that: The second mounting component (401) is connected to a first limiting component (402).

4. The fine ceramic material fracture toughness micro-incision device according to claim 1, characterized in that: The cooling assembly (5) comprises a third mounting component (501) and a water storage tank (503); the third mounting component (501) is connected to the first mounting component (3); the third mounting component (501) is connected to a fourth mounting component (502); the water storage tank (503) is connected to the fourth mounting component (502); and the water storage tank (503) is connected to an end cover (504).

5. A fine ceramic material fracture toughness micro-incision device according to claim 4, characterized in that: The cooling assembly (5) further comprises a switch component (505) connected to the end cover (504), and the switch component (505) is connected to a water nozzle (506).

6. A fine ceramic material fracture toughness micro-incision device according to claim 4, characterized in that: The fourth installation component (502) is provided with a first connection portion (5021) and a second connection portion (5022), and the first connection portion (5021) and the second connection portion (5022) of the fourth installation component (502) are both embedded between the water storage tank (503) and the end cover (504).

7. The fine ceramic material fracture toughness micro-incision device according to claim 1, characterized in that: The cutting assembly (6) comprises a cutting component (608) and a sixth mounting component (602), wherein the sixth mounting component (602) is connected to the frame (1), the sixth mounting component (602) is connected to a power device (609), the power device (609) is fixedly connected to a second pulley (606), one end of the cutting component (608) is fixedly connected to the second pulley (606) and the other end is connected to a counterweight component (610).

8. The fine ceramic material fracture toughness micro-incision device according to claim 7, characterized in that: The incision assembly (6) also includes a fifth mounting component (601) and a seventh mounting component (603) respectively connected to the frame (1); the fifth mounting component (601) is connected to an eighth mounting component (604); the eighth mounting component (604) is rotatably connected to a first pulley (605); the seventh mounting component (603) is rotatably connected to a third pulley (607); and the cutting component (608) passes through the first pulley (605) and the third pulley (607), respectively.

9. The fine ceramic material fracture toughness micro-incision device according to claim 1, characterized in that: The frame (1) is connected to an outer protective plate (7); the electric control assembly comprises a touch screen (8) connected to the outer protective plate (7), an electric control component, and a power switch (9); the touch screen (8) is electrically connected to the linear module (2), the switch component (505), and the power device (609) respectively through the electric control component.

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