A quartz brick cutting device and method

Abstract

The present invention provides a quartz brick cutting device and method, which relates to the technical field of cutting devices. Aiming at the problems that during the cutting process of porous permeable quartz bricks, they are easily affected by mechanical vibration and thermal stress, resulting in pore collapse, surface chipping, and a decrease in water permeability. It was unexpectedly found that the technical solution of first immersing the quartz brick in water, performing ultrasonic constant-temperature infiltration treatment, then taking it out and draining the surface moisture, clamping and fixing it and calibrating the cutting position, then performing layered cutting, pausing after each layer of cutting, releasing stress and adjusting the cutting rate, and finally releasing the clamping and taking out the quartz brick is adopted. Through the infiltration pretreatment of the quartz brick and the use of layered cutting, the damage to the pore structure of the quartz brick during the cutting process is reduced, thereby maintaining the good water permeability and structural strength of the quartz brick. The present invention can effectively improve the cutting quality of porous permeable quartz bricks, maintain their original excellent properties, and improve the mechanical properties and water permeability of the cut quartz bricks.

Description

Technical Field

[0001] The present invention belongs to the technical field of quartz brick cutting, and particularly relates to a quartz brick cutting device and method. Background Art

[0002] Porous permeable quartz bricks are widely used in the construction of sponge cities and landscape paving due to their excellent water permeability, compressive strength, and environmental protection characteristics. However, their internal porous structure is easily affected by mechanical vibration and thermal stress during the cutting process, resulting in pore collapse, surface chipping, and a decrease in water permeability, severely restricting the efficient application of the material.

[0003] Traditional quartz brick cutting methods usually use a high-speed rotating cutting tool to directly cut the brick body. Although this method has a relatively high cutting efficiency, due to the large number of pores inside the quartz brick, it is easily affected by mechanical vibration and thermal stress during the cutting process, resulting in pore collapse, surface chipping, and even cracks, thereby reducing the water permeability and structural strength of the quartz brick and severely restricting its application range. Summary of the Invention

[0004] The present invention overcomes the deficiencies of the prior art and provides a quartz brick cutting device and method.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a quartz brick cutting method for cutting porous permeable quartz bricks, comprising the following steps:

[0006] S1. Immerse the quartz brick in water and perform ultrasonic constant temperature infiltration treatment;

[0007] S2. Take out the infiltrated quartz brick and drain the surface water;

[0008] S3. Clamp and fix the drained quartz brick and calibrate the cutting position;

[0009] S4. Perform layered cutting on the clamped and fixed quartz brick. Pause after each layer is cut, release the stress and adjust the cutting rate;

[0010] S5. After cutting is completed, release the clamp and take out the quartz brick.

[0011] In a preferred embodiment of the present invention, in step S1, the infiltration time is 6 - 15 min, the water temperature for infiltration is controlled at 30 - 50 °C, and ultrasonic waves with a frequency of 20 - 40 kHz are used to assist penetration.

[0012] In a preferred embodiment of the present invention, the layered cutting in step S4 includes surface layer cutting, intermediate layer cutting, and bottom layer cutting, wherein:

[0013] The cutting depth of the surface layer is 5 - 15 mm, and the cutting speed is 50 - 100 mm / min;

[0014] The cutting depth of the middle layer is 10 - 25 mm, and the cutting speed is 150 - 200 mm / min;

[0015] The cutting depth of the bottom layer is the remaining thickness, and the cutting speed is 250 - 300 mm / min.

[0016] In a preferred embodiment of the present invention, during the cutting process of step S4, a spray coolant is used to cool the cutting tool, and a high-pressure gas is used to blow away the debris generated during the cutting process.

[0017] Another technical solution provided by the present invention: A quartz brick cutting device, based on the above cutting method, for cutting porous permeable quartz bricks, includes:

[0018] A base assembly, including a frame body, a soaking station provided on one side of the frame body, a cutting station provided on the other side of the frame body, and a guide rail penetrating the frame body;

[0019] A soaking assembly, arranged at the soaking station, including a soaking water tank, an ultrasonic generator provided at the bottom of the soaking water tank, a constant temperature heater embedded in the inner wall of the soaking water tank, and a lifting mechanism provided at the bottom of the soaking water tank;

[0020] A transfer assembly, including a translation mechanism arranged on the guide rail and a picking mechanism arranged on the translation mechanism, for transferring the quartz brick from the soaking station to the cutting station;

[0021] A clamping assembly, arranged at the cutting station, for clamping the quartz brick;

[0022] A cutting assembly, arranged at the cutting station, including a three-axis moving mechanism and a cutting tool mounted on the three-axis moving mechanism;

[0023] An auxiliary assembly, arranged at the cutting station, including a spray mechanism and a chip removal mechanism;

[0024] A control unit, signal-connected to the soaking assembly, the transfer assembly, the clamping assembly, the cutting assembly, and the auxiliary assembly.

[0025] In a preferred embodiment of the present invention, the soaking water tank is a rectangular tank body, with a support platform for placing the quartz brick provided at the bottom, and V-shaped guiding rib plates provided on the inner wall; through holes and upwardly protruding support rods are arranged in an array on the support platform; the top of the support rod is arc-shaped for supporting the quartz brick.

[0026] In a preferred embodiment of the present invention, the cutting tool includes a diamond circular saw blade and a driving motor for driving the diamond circular saw blade; the diamond circular saw blade is fixed to the output shaft of the driving motor through a flange plate.

[0027] In a preferred embodiment of the present invention, the tooth pitch of the saw teeth of the diamond circular saw blade is 6 - 12 mm, and the tooth height is 15 - 35 mm; a chip removal groove is provided between adjacent saw teeth, and an arc-shaped heat dissipation groove is provided on the diamond circular saw blade.

[0028] In a preferred embodiment of the present invention, the clamping assembly includes a hydraulic clamping table and a two-way hydraulic cylinder group. The two-way hydraulic cylinder group includes a horizontal hydraulic cylinder and a rotary hydraulic cylinder; the end of the piston rod of the horizontal hydraulic cylinder is fixed with an L-shaped clamping plate for clamping the quartz brick from the side; a rubber buffer layer is provided inside the L-shaped clamping plate; the output shaft of the rotary hydraulic cylinder is connected with a rotary shaft to drive the rotary shaft to rotate; a pressing plate is fixedly connected to the rotary shaft for pressing the quartz brick, and a grid-shaped convex pattern is provided on the bottom surface of the pressing plate.

[0029] In a preferred embodiment of the present invention, the spraying mechanism is arranged above the cutting tool and includes a water tank, a nozzle, and a water pipe connecting the water tank and the nozzle; the nozzle sprays a coolant towards the cutting tool to cool the saw blade and wash away debris; the chip removal mechanism includes a pair of air nozzle brackets arranged on both sides of the cutting station and high-pressure air nozzles installed on the air nozzle brackets; the high-pressure air nozzles are connected to an air pump through an air pipe.

[0030] The present invention solves the defects existing in the background technology, and the present invention has the following beneficial effects:

[0031] (1) The quartz brick cutting device and method provided by the present invention reduce the damage to the pore structure of the quartz brick during the cutting process through the infiltration pretreatment of the quartz brick and the use of layered cutting, thereby maintaining the good water permeability and structural strength of the quartz brick.

[0032] (2) The infiltration pretreatment is carried out before cutting the quartz brick, so that water can penetrate into the pores of the quartz brick, playing a lubricating and buffering role during the cutting process, reducing the friction and heat generation between the cutting tool and the quartz brick material, and reducing the surface roughness. Compared with the prior art, the retention rate of the water permeability coefficient of the cut quartz brick is higher, which can better meet the actual application requirements, and effectively reduce the pore collapse caused by stress, heat, etc. generated during cutting.

[0033] (3) By adopting the layered cutting method, the instantaneous impact and stress concentration during the cutting process are reduced, avoiding the concentrated shear of the stress concentration on the pore wall and reducing the damage to the pore structure of the quartz brick. Compared with the prior art, the compressive strength loss rate of the cut quartz brick is lower, and its structural strength can be better maintained. Through a multi-stage and low-impact cutting process, the stress is gradually released, reducing the direct impact on the pore structure.

[0034] (4) The infiltration pretreatment process can reduce the cutting force, thereby reducing the structural damage of the quartz brick caused by cutting parameters; by using the cutting method of layer-by-layer cutting to reduce the impact, while ensuring the cutting efficiency, it can protect the pore structure inside the brick body and avoid the collapse of pores caused by stress, heat, etc. generated during cutting; through the support of water on the pore walls, the expansion of microcracks during cutting can be reduced, thereby improving the overall strength of the cut quartz brick. The two work together synergistically to jointly improve the water permeability and structural strength of the quartz brick. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 is a flowchart of a quartz brick cutting method;

[0037] Figure 2 is a flowchart of layer-by-layer cutting;

[0038] Figure 3 is a top view of a quartz brick cutting device;

[0039] Figure 4 is a structural schematic diagram of a quartz brick cutting device;

[0040] Figure 5 is a structural schematic diagram of the infiltration component;

[0041] Figure 6 is a structural schematic diagram of the cutting tool;

[0042] Figure 7 is a structural schematic diagram of the diamond circular saw blade;

[0043] In the figure: 100, base assembly; 110, frame; 111, horizontal support beam; 112, vertical support beam; 120, infiltration station; 130, cutting station; 140, guide rail; 200, infiltration assembly; 210, infiltration water tank; 211, support platform; 212, V-shaped flow guiding rib plate; 213, interlayer; 214, through hole; 215, support rod; 230, lifting mechanism; 231, cylinder; 232, lifting rod; 240, ultrasonic generator; 250, constant temperature heater; 300, transfer assembly; 310, translation mechanism; 320, picking mechanism; 321, pneumatic gripper; 322, limit block; 323, driving cylinder; 400, clamping assembly; 410, hydraulic clamping table; 420, double-direction hydraulic cylinder group; 421, horizontal hydraulic cylinder; 422, L-shaped clamping plate; 425, rotary hydraulic cylinder; 426, rotary shaft; 427, pressing plate; 500, cutting assembly; 510, three-axis moving mechanism; 520, cutting tool; 521, diamond circular saw blade; 522, saw tooth; 523, chip removal groove; 524, arc-shaped heat dissipation groove; 525, driving motor; 600, auxiliary assembly; 610, spraying mechanism; 611, nozzle; 612, water pipe; 620, chip removal mechanism; 621, air nozzle bracket; 622, high-pressure air nozzle. Detailed implementation manners

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0046] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plural" is two or more.

[0047] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific circumstances.

[0048] Application Overview:

[0049] The present invention relates to a precise cutting method for porous permeable quartz bricks. Due to their unique high porosity and excellent water permeability, porous permeable quartz bricks are widely used in the construction of sponge cities and landscape paving. However, the complex pore network inside them is vulnerable to mechanical vibration and thermal stress damage in traditional cutting processes, resulting in pore collapse, surface chipping, and a significant decline in water permeability.

[0050] Traditional cutting methods use high-speed tools to directly cut. Although the efficiency is high, the instantaneous load is concentrated and the frictional heat accumulates seriously, resulting in damage to the pore walls. It was unexpectedly found that by combining infiltration pretreatment with layer-by-layer cutting, pore damage can be significantly reduced. Specifically, there are a large number of pores inside the porous permeable quartz bricks. During the infiltration process, water molecules penetrate into the pores and form an extremely thin liquid film. The liquid film forms a boundary lubricating layer between the tool and the quartz brick, reducing the solid contact area. Boundary lubrication can significantly reduce the friction coefficient. After infiltration, the water in the pores forms a liquid skeleton. Under the action of the cutting force, the water disperses the stress through flow, avoiding the instantaneous collapse of the pore walls and absorbing part of the mechanical vibration energy. Further combined with layer-by-layer cutting, the damage to the pore structure of the quartz brick during the cutting process is reduced, thereby maintaining the good water permeability and structural strength of the quartz brick.

[0051] Exemplary method:

[0052] As Figure 1 shown, a method for cutting quartz bricks, which is used to cut porous and permeable quartz bricks, includes the following steps:

[0053] S1. Immerse the quartz brick in water and perform ultrasonic constant-temperature infiltration treatment;

[0054] S2. Take out the infiltrated quartz brick and drain the surface water;

[0055] S3. Clamp and fix the drained quartz brick and calibrate the cutting position;

[0056] S4. Perform layered cutting on the clamped and fixed quartz brick. Pause after each layer is cut, release the stress and adjust the cutting rate;

[0057] S5. After the cutting is completed, release the clamp and take out the quartz brick.

[0058] The above method reduces stress concentration and vibration during cutting by performing infiltration treatment on the quartz brick, adopting layered cutting and cooling / chip removal assistance, thereby protecting the porous structure of the quartz brick and ensuring that the cut quartz brick can still maintain good water permeability and structural strength.

[0059] Further, in step S1, the infiltration time is 6 - 15 min, the water temperature for infiltration is controlled at 30 - 50 °C, and ultrasonic waves with a frequency of 20 - 40 kHz are used for assisted penetration.

[0060] Further, as Figure 2 shown, the layered cutting in step S4 includes surface layer cutting, intermediate layer cutting and bottom layer cutting, which can reduce the instantaneous impact and stress concentration during cutting and reduce the damage to the pore structure; by removing materials in stages, the stress is gradually released, thereby reducing the risk of pore collapse and surface chipping. Among them:

[0061] The cutting depth of the surface layer is 5 - 15 mm, and the cutting speed is 50 - 100 mm / min;

[0062] The cutting depth of the intermediate layer is 10 - 25 mm, and the cutting speed is 150 - 200 mm / min;

[0063] The cutting depth of the bottom layer is the remaining thickness, and the cutting speed is 250 - 300 mm / min.

[0064] Further, during the cutting process of step S4, spray coolant is used to cool the cutting tool, reducing the damage to the pore structure caused by thermal stress; lubricating the cutting tool and the surface of the quartz brick to reduce friction; flushing away debris to keep the cutting area clean. In addition, high-pressure gas is used to blow away the debris generated during the cutting process, preventing the debris from accumulating in the cutting area, affecting the cutting effect, and reducing the secondary damage to the pore structure by the debris.

[0065] Exemplary device:

[0066] As Figures 3 - 7 shown, a quartz brick cutting device for cutting porous permeable quartz bricks includes:

[0067] A base assembly 100, including:

[0068] A frame body 110, which is fixedly connected by a transverse support beam 111 and a longitudinal support beam 112.

[0069] An infiltration station 120, located at one end of the frame body 110.

[0070] A cutting station 130, located at the other end of the frame body 110.

[0071] Guide rails 140, arranged in parallel along the length direction of the frame body 110 on both sides of the frame body 110.

[0072] An infiltration assembly 200, arranged on the infiltration station 120, including:

[0073] An infiltration water tank 210, placed on the top of the infiltration station 120, and a support platform 211 for placing quartz bricks is arranged at the bottom.

[0074] A lifting mechanism 230, including a cylinder 231 and a lifting rod 232. The two ends of the lifting rod 232 are respectively fixedly connected to the bottom surface of the support platform 211 and the piston rod of the cylinder 231.

[0075] A transfer assembly 300, arranged on the infiltration station 120, including:

[0076] A translation mechanism 310, spanning across the base assembly 100 and slidingly connected to the guide rails 140.

[0077] A picking mechanism 320, installed on the translation mechanism 310, for grasping and releasing quartz bricks.

[0078] A clamping assembly 400, arranged on the cutting station 130, for clamping quartz bricks.

[0079] A cutting assembly 500, arranged on the cutting station 130, including:

[0080] The three-axis moving mechanism 510 straddles the base assembly 100 and is slidably connected to the guide rail 140, including an X-axis slide, a Y-axis slide, and a Z-axis slide.

[0081] The cutting tool 520 is installed at the lower end of the Z-axis slide.

[0082] The auxiliary assembly 600 is arranged at the cutting station 130 and includes:

[0083] The spraying mechanism 610 is used to cool the cutting tool 520.

[0084] The control unit is signal-connected to the infiltration assembly 200, the transfer assembly 300, the clamping assembly 400, the cutting assembly 500, and the auxiliary assembly 600, and is used to control the infiltration process, the transfer process, the clamping process, the cutting process, as well as cooling and chip removal.

[0085] The above quartz brick cutting device pre-treats the quartz brick through the infiltration station 120, and uses water molecules to fully fill the pores inside the quartz brick, so as to effectively reduce the risk of pore structure deformation or damage caused by vibration and impact during the subsequent cutting process, ensure the water permeability and structural strength of the quartz brick. At the same time, the device provides stable support through the base assembly 100, realizes automatic transfer through the transfer assembly 300, provides firm fixation through the clamping assembly 400, realizes precise cutting through the cutting assembly 500, and the auxiliary assembly 600 assists the cutting process, jointly achieving the cutting goal of high efficiency, precision and effective protection of the pore structure of the quartz brick, and is particularly suitable for the cutting and processing of permeable quartz bricks with high requirements for pore structure.

[0086] As Figures 4 - 5 shown, the infiltration water tank 210 is a rectangular parallelepiped tank body, with a support platform 211 for placing quartz bricks arranged at the bottom, V-shaped flow guiding rib plates 212 arranged on the inner wall, and a sandwich layer 213 arranged on the side wall. The infiltration assembly 200 further includes an ultrasonic generator 240 and a constant temperature heater 250. The ultrasonic generator 240 is fixed at the bottom of the infiltration water tank 210, and the constant temperature heater 250 is embedded in the sandwich layer 213. The V-shaped flow guiding rib plates 212 are used to guide the water flow and improve the infiltration efficiency. The sandwich layer 213 is used to accommodate the constant temperature heater and provide good heat preservation effect.

[0087] The ultrasonic generator 240 includes a transducer that converts electrical energy into mechanical vibration energy and a power amplifier that provides high-frequency electrical energy and drives the transducer to work. The ultrasonic generator 240 uses ultrasonic waves to generate cavitation effects in water, so that water molecules penetrate into the pores of the quartz brick.

[0088] As Figures 4 - 5 shown, through holes 214 penetrating the support platform 211 and support rods 215 protruding upward are arranged in an array on the support platform 211.

[0089] The through-hole 214 has a diameter of 5 - 25 mm and a pitch of 15 - 50 mm, allowing water to penetrate from the bottom. The support rods reduce the contact area between the quartz brick and the platform. The support rod 215 has a height of 10 - 30 mm and an arc-shaped top, which is used to support the quartz brick, prevent it from directly contacting the support platform, and allow water to circulate at the bottom of the quartz brick. The support platform 211 accelerates the infiltration speed and improves the infiltration uniformity through the through-hole 214 and the support rod 215.

[0090] As Figure 3 , 4 , 5, and 7 show that the cutting tool 520 includes a diamond circular saw blade 521 and a drive motor 525 for driving the diamond circular saw blade 521. The diamond circular saw blade 521 is fixed to the output shaft of the drive motor 525 through a flange. The drive motor 525 is a servo motor that can achieve speed control and positioning. The cutting tool 520 drives the diamond circular saw blade 521 to rotate at a high speed through the drive motor 525 and controls the cutting trajectory through the three-axis moving mechanism 510 to achieve the cutting of the quartz brick.

[0091] As Figure 7 shown, in a specific embodiment, the tooth pitch of the saw teeth 522 of the diamond circular saw blade 521 is 6 - 12 mm and the tooth height is 15 - 35 mm. The smaller tooth pitch and the higher tooth height increase the contact points with the quartz brick material during the cutting process, achieve a smoother cutting surface, reduce the generation of chipping and burrs, and especially when cutting porous materials, can better protect the pore structure.

[0092] As Figure 7 shown, in a specific embodiment, a chip removal groove 523 is provided between adjacent saw teeth 522. The chip removal groove 523 provides a space for storing chips and guiding the removal of chips. By promptly removing chips, the friction between the saw blade and the quartz brick material can be reduced.

[0093] As Figure 7 shown, in a specific embodiment, an arc-shaped heat dissipation groove 524 is provided on the diamond circular saw blade 521. The arc-shaped heat dissipation groove 524 can promote the flow of air on the surface of the saw blade, take away heat, and improve the heat dissipation efficiency.

[0094] As Figure 4As shown, the picking mechanism 320 includes a pneumatic gripper 321, a limit block 322 disposed at the end of the pneumatic gripper 321, and a driving cylinder 323 for driving the opening and closing of the pneumatic gripper 321. A rubber pad is provided inside the pneumatic gripper 321 to increase the friction force and prevent the quartz brick from sliding. The limit block 322 is used to limit the clamping position of the pneumatic gripper 321 to ensure the accuracy of grasping. The driving cylinder 323 adopts a double-acting cylinder, which can achieve fast and stable opening and closing actions. The picking mechanism 320 controls the opening and closing of the pneumatic gripper 321 through the driving cylinder 323 to clamp or release the quartz brick. The limit block 322 ensures the accuracy of the clamping position.

[0095] As Figure 4 shown, the clamping assembly 400 includes a hydraulic clamping table 410 and a two-way hydraulic cylinder group 420. The two-way hydraulic cylinder group 420 includes a horizontal hydraulic cylinder 421 and a rotary hydraulic cylinder 425. A L-shaped clamping plate 422 is fixed at the end of the piston rod of the horizontal hydraulic cylinder 421 for clamping the quartz brick from the side. A rubber buffer layer is provided inside the L-shaped clamping plate 422. The output shaft of the rotary hydraulic cylinder 425 is connected with a rotary shaft 426 to drive the rotary shaft 426 to rotate. A pressing plate 427 is fixedly connected to the rotary shaft 426 for pressing the quartz brick, and grid-shaped convex patterns are provided on the bottom surface of the pressing plate 427.

[0096] The horizontal hydraulic cylinder 421 pushes the L-shaped clamping plate 422 to clamp the quartz brick from the side, and the rubber buffer layer therein protects the surface of the quartz brick to prevent damage. The rotary hydraulic cylinder 425 drives the rotary shaft 426 to rotate; the rotary shaft 426 drives the pressing plate 427 to rotate downward, and the bottom surface of the pressing plate 427 presses the upper surface of the quartz brick; the grid-shaped convex patterns therein increase the friction force and improve the clamping stability. Through the horizontal hydraulic cylinder 421 and the rotary hydraulic cylinder 425, multi-point pressing is realized, and the pressing force can be more evenly dispersed, reducing the local stress concentration on the quartz brick. Especially when cutting quartz bricks with larger sizes or irregular shapes, a more stable clamping effect can be provided.

[0097] As Figure 4 shown, the spraying mechanism 610 is disposed above the cutting tool 520 and includes a water tank, a nozzle 611, and a water pipe 612 connecting the water tank and the nozzle 611. The nozzle 611 sprays a coolant towards the diamond circular saw blade 521 to cool the saw blade and wash away debris.

[0098] As Figure 4 shown, the auxiliary assembly 600 further includes a chip removal mechanism 620. The chip removal mechanism 620 includes air nozzle brackets 621 arranged in pairs on both sides of the cutting station 130 and high-pressure air nozzles 622 installed on the air nozzle brackets 621. The high-pressure air nozzles 622 are connected to an air pump through air pipes.

[0099] The nozzle support 621 can adjust the injection angle of the nozzle. The high-pressure nozzle 622 uses a nozzle with adjustable flow rate, which can adjust the air flow intensity according to different cutting requirements. The air pump provides high-pressure gas to blow away the debris generated during the cutting process. The chip removal mechanism 620 generates high-pressure gas through the air pump and transports it to the high-pressure nozzle 622 through the air pipe. The high-pressure nozzle 622 sprays the gas onto the quartz brick to blow away the debris.

[0100] Example 1

[0101] A method for cutting quartz bricks, which is used to cut porous and permeable quartz bricks, includes the following steps:

[0102] S1. Immerse the quartz brick in water and perform ultrasonic constant-temperature infiltration treatment;

[0103] S2. Take out the infiltrated quartz brick and drain the surface water;

[0104] S3. Clamp and fix the drained quartz brick and calibrate the cutting position;

[0105] S4. Perform layered cutting on the clamped and fixed quartz brick. Pause after each layer of cutting, release the stress and adjust the cutting rate;

[0106] S5. After completing the cutting, release the clamp and take out the quartz brick.

[0107] Among them:

[0108] In S1, the infiltration time is 8 minutes, the water temperature of infiltration is controlled at 50°C, and ultrasonic wave with a frequency of 20 kHz is used for auxiliary penetration.

[0109] In S4, a diamond circular saw blade 521 with a diameter of 300 mm is used for cutting. The pitch of the saw teeth 522 is 6 mm and the tooth height is 15 mm. The cutting depth of the surface layer is 5 mm and the cutting speed is 50 mm / min; the cutting depth of the middle layer is 15 mm and the cutting speed is 150 mm / min; the cutting depth of the bottom layer is the remaining thickness and the cutting speed is 250 mm / min. The flow rate of the sprayed coolant is 5 L / min and the temperature is 20°C. The chip removal air pressure of the high-pressure nozzle is 0.6 MPa and the angle is 45°.

[0110] Example 2

[0111] Different from Example 1, in this example, the infiltration time of S1 is 8 minutes, the water temperature of infiltration is controlled at 50°C, and ultrasonic wave with a frequency of 28 kHz is used for auxiliary penetration.

[0112] Example 3

[0113] Different from Example 1, in this example, the infiltration time of S1 is 8 minutes, the water temperature for infiltration is controlled at 50 °C, and ultrasonic-assisted penetration with a frequency of 40 kHz is used.

[0114] Example 4

[0115] Different from Example 1, in this example, the diamond circular saw blade 521 used in S4 has a tooth pitch of 9 mm and a tooth height of 25 mm for the saw teeth 522, and the cutting depth of the surface layer of S4 is 5 mm with a cutting speed of 50 mm / min; the cutting depth of the middle layer is 10 mm with a cutting speed of 200 mm / min; the cutting depth of the bottom layer is the remaining thickness with a cutting speed of 300 mm / min.

[0116] Example 5

[0117] Different from Example 1, in this example, the infiltration time of S1 is 8 minutes, the water temperature for infiltration is controlled at 50 °C, and ultrasonic-assisted penetration with a frequency of 28 kHz is used. The diamond circular saw blade 521 used in S4 has a tooth pitch of 9 mm and a tooth height of 25 mm for the saw teeth 522, and the cutting depth of the surface layer of S4 is 5 mm with a cutting speed of 50 mm / min; the cutting depth of the middle layer is 10 mm with a cutting speed of 200 mm / min; the cutting depth of the bottom layer is the remaining thickness with a cutting speed of 300 mm / min.

[0118] Example 6

[0119] Different from Example 1, in this example, the infiltration time of S1 is 8 minutes, the water temperature for infiltration is controlled at 50 °C, and ultrasonic-assisted penetration with a frequency of 40 kHz is used. The diamond circular saw blade 521 used in S4 has a tooth pitch of 9 mm and a tooth height of 25 mm for the saw teeth 522, and the cutting depth of the surface layer of S4 is 5 mm with a cutting speed of 50 mm / min; the cutting depth of the middle layer is 10 mm with a cutting speed of 200 mm / min; the cutting depth of the bottom layer is the remaining thickness with a cutting speed of 300 mm / min.

[0120] Example 7

[0121] Different from Example 1, in this example, the diamond circular saw blade 521 used in S4 has a tooth pitch of 12 mm and a tooth height of 35 mm; the cutting method is single-layer cutting with a speed of 250 mm / min.

[0122] Example 8

[0123] Different from Example 1, in this example, the infiltration time of S1 is 8 minutes, the water temperature for infiltration is controlled at 50 °C, and ultrasonic assisted penetration with a frequency of 28 kHz is used. The diamond circular saw blade 521 used in S4 has a tooth pitch of 12 mm and a tooth height of 35 mm for the saw teeth 522; the cutting method is single-layer cutting with a speed of 250 mm / min.

[0124] Example 9

[0125] Different from Example 1, in this example, the infiltration time of S1 is 8 minutes, the water temperature for infiltration is controlled at 50 °C, and ultrasonic assisted penetration with a frequency of 40 kHz is used. The diamond circular saw blade 521 used in S4 has a tooth pitch of 12 mm and a tooth height of 35 mm for the saw teeth 522; the cutting method is single-layer cutting with a speed of 250 mm / min.

[0126] Experimental Example 1

[0127] (i) Sample: A porous water-permeable quartz brick sample with dimensions of 300×300×30 mm, an initial porosity of 20±2%, a water permeability coefficient of 0.5±0.1 cm / s, and a clean and undamaged surface.

[0128] (ii) Ultrasonic infiltration treatment: Immerse the quartz brick in a constant temperature water bath at 50 °C, and install an ultrasonic generator at the bottom of the water bath. Set the infiltration time to 8 minutes, and adjust the ultrasonic frequency according to the experimental groups (20 kHz, 28 kHz, 40 kHz).

[0129] (iii) Cutting parameter settings: The standard stratification is the surface layer (5 mm, 50 mm / min), the middle layer (15 mm, 150 mm / min), and the bottom layer (remaining thickness, 250 mm / min); the optimized stratification is the surface layer (5 mm, 50 mm / min), the middle layer (10 mm, 200 mm / min), and the bottom layer (remaining thickness, 300 mm / min); single-layer cutting to the full thickness (250 mm / min). The flow rate of the sprayed coolant is 5 L / min, and the temperature is 20 °C. The chip removal air pressure of the high-pressure air nozzle is 0.6 MPa, and the angle is 45°.

[0130] Cut the samples in groups as shown in the following table:

[0131] Table 1 Grouping of Cut Samples

[0132]

[0133] The control group was the uncut original brick with a porosity of 20.1% and a water permeability coefficient of 0.52 cm / s. Each group was repeated 5 times and the average value was taken. Referring to the gas expansion method (ASTM D4404), the change in pore volume before and after cutting was measured and recorded as the porosity ΔP; referring to the ISO17892-11 standard to test the water permeability performance and comparing it with the original brick, it was recorded as the water permeability coefficient retention rate R; a white light interferometer (sampling length 0.8 mm) was used to measure the cutting surface to obtain the surface roughness Ra; the compressive strength of the brick after cutting was tested according to the GB / T 2542 standard, and the compressive strength loss rate was calculated; a micro-CT scan (resolution 5 μm) was used to analyze the proportion of the connected pore volume to obtain the pore connectivity. The grouping cutting results are shown in the following table:

[0134] Table 2 Cutting data results table

[0135]

[0136] Control group: ΔP = 0%, R = 100%, Ra = 2.1 μm, edge chipping rate = 0%, compressive strength loss rate = 0%, pore connectivity = 96%.

[0137] The water permeability coefficient retention rate R reflects the retention degree of the water permeability performance of the quartz brick after cutting, and the original brick is 100%. In the optimized stratified cutting group, when the ultrasonic frequency was increased from 20 kHz to 28 kHz, the R value increased significantly from 95% to 105%, the water penetration efficiency increased, and the pore structure was protected; but when the frequency was further increased to 40 kHz, the R value dropped back to 90%, and the high-frequency vibration would damage the microstructure of the pore wall. In the single-layer cutting group, the R value increased from 68% to 80% with the increase of the frequency, but it was still much lower than that of the optimized stratified group. The change in porosity ΔP measures the degree of damage to the pore volume caused by cutting. In the optimized stratified group, ΔP was -0.5% at 28 kHz, and the pores were not compressed but slightly expanded, which was related to the water supporting the pore wall; while in the single-layer cutting group, ΔP was as high as +7.0% at 20 kHz, and a large number of pores collapsed due to stress concentration. The lower the surface roughness Ra and the edge chipping rate, the smoother the cutting surface. In the optimized stratified group, Ra = 4.2 μm at 28 kHz, close to 2.1 μm of the original brick, while in the single-layer cutting group, Ra = 19.5 μm at 20 kHz, and the surface edge chipping was serious.

[0138] For Group G5, the permeability coefficient retention rate R is 105%, the compressive strength loss rate is only 1%, and the pore connectivity is 99%. The data performance is comprehensively superior to other groups. This is because the cavitation bubble density generated by 28 kHz ultrasonic waves in the liquid can effectively destroy the air resistance in the pores when the bubbles burst, enabling water molecules to quickly penetrate into the deep pores. The water forms a continuous lubricating film in the pores, reducing the cutting friction coefficient, minimizing heat accumulation, and avoiding microcracks on the pore walls caused by high-frequency vibration. Further, slow cutting of the surface layer eliminates the initial surface stress and avoids crack propagation; medium-speed cutting of the intermediate layer removes most of the material and controls the cutting temperature in cooperation with the sprayed coolant; high-speed cutting of the bottom layer reduces stress rebound. Pause for 10 seconds after each layer of cutting to redistribute the water in the pores and buffer subsequent impacts, significantly reducing the chipping rate to 0.2%. In addition, a 9 mm tooth pitch ensures uniform distribution of the cutting force and avoids excessive local pressure; a 25 mm tooth height combined with chip evacuation grooves clears debris in a timely manner to prevent secondary friction damage to the pore walls; the arc-shaped heat dissipation grooves on the diamond saw blade accelerate air flow and control the tool temperature in cooperation with the sprayed coolant, avoiding microcracks caused by thermal expansion, thereby maximizing the protection of the pore structure.

[0139] For Group G7, the permeability coefficient retention rate R is 68%, the compressive strength loss rate is 23%, and the pore connectivity is 60%. The data performance deteriorates comprehensively. This is because the cavitation effect of 20 kHz ultrasonic waves is weak and can only penetrate to the surface layer. During cutting, the deep pores lack lubrication, the tool directly contacts the material, the friction coefficient is high, and the local temperature rises significantly, causing thermally induced cracks. Moreover, full-thickness cutting applies all the cutting forces at once, and the instantaneous stress exceeds the compressive strength of the pore walls, resulting in pore collapse. The lack of stress release during layered pauses leads to an increase in the chipping rate. In addition, a 12 mm tooth pitch concentrates the cutting force on a few tooth tips, and the local pressure exceeds the bearing limit of the pore walls, directly crushing the pore structure; a 35 mm tooth height causes debris retention, hinders water flow, and exacerbates frictional heat. Insufficient low-frequency penetration leads to dry friction, single-layer cutting with concentrated stress, and large tooth pitch saw teeth magnify local damage, ultimately resulting in the collapse of the pore structure.

[0140] Based on the ideal embodiments of the present invention as inspiration, through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A quartz brick cutting method for cutting porous permeable quartz bricks, characterized in that: The following steps are involved: S1. Immerse the quartz brick in water and perform ultrasonic constant temperature infiltration treatment; S2. Take out the soaked quartz brick and drain the surface water; S3, clamp and fix the drained quartz brick and calibrate the cutting position; S4, cutting the clamped quartz bricks in layers, pausing after each layer cutting to release stress and adjust the cutting speed; S5. After the cutting is completed, the clamping is released and the quartz brick is taken out; The layered cutting in step S4 includes surface layer cutting, middle layer cutting and bottom layer cutting, wherein: The surface layer cutting depth is 5-15mm, and the cutting speed is 50-100mm / min; The cutting depth of the middle layer is 10-25mm, and the cutting speed is 150-200mm / min; The bottom layer cutting depth is the remaining thickness, and the cutting speed is 250-300mm / min.

2. The cutting method according to claim 1, characterized in that: In step S1, the immersion time is 6-15 minutes, the immersion water temperature is controlled at 30-50°C, and ultrasonic waves with a frequency of 20-40 kHz are used to assist penetration.

3. The cutting method according to claim 1, characterized in that: During the cutting process of step S4, the cutting tool is cooled by spraying coolant, and the debris generated during the cutting process is blown away by high-pressure gas.

4. A quartz brick cutting device, based on the cutting method according to any one of claims 1 to 3, used for cutting porous permeable quartz bricks, characterized in that: include: A base assembly (100) comprises a frame (110), an infiltration station (120) arranged on one side of the frame (110), a cutting station (130) arranged on the other side of the frame (110), and a guide rail (140) penetrating the frame (110); An infiltration assembly (200) is disposed at the infiltration station (120), comprising an infiltration tank (210), an ultrasonic generator (240) disposed at the bottom of the infiltration tank (210), a constant temperature heater (250) embedded in the inner wall of the infiltration tank (210), and a lifting mechanism (230) disposed at the bottom of the infiltration tank (210); A transfer assembly (300) comprising a translation mechanism (310) disposed on the guide rail (140) and a picking mechanism (320) disposed on the translation mechanism (310), and used for transferring the quartz brick from the infiltration station (120) to the cutting station (130); A clamping assembly (400), disposed at the cutting station (130), and used for clamping the quartz brick; A cutting assembly (500), arranged at the cutting station (130), comprising a three-axis moving mechanism (510) and a cutting tool (520) mounted on the three-axis moving mechanism (510); An auxiliary component (600), disposed at the cutting station (130), comprising a spraying mechanism (610) and a chip removal mechanism (620); A control unit is signal-connected to the infiltration component (200), the transport component (300), the clamping component (400), the cutting component (500), and the auxiliary component (600).

5. The quartz brick cutting device according to claim 4, characterized in that: The infiltration water tank (210) is a rectangular parallelepiped tank body, with a support platform (211) for placing quartz bricks provided at the bottom, and V-shaped flow guide ribs (212) provided on the inner wall; through holes (214) and upwardly protruding support rods (215) are provided in an array on the support platform (211); the top of the support rod (215) is arc-shaped and is used to support the quartz bricks.

6. The quartz brick cutting device according to claim 4, characterized in that: The cutting tool (520) comprises a diamond circular saw blade (521) and a driving motor (525) for driving the diamond circular saw blade (521); the diamond circular saw blade (521) is fixed to an output shaft of the driving motor (525) via a flange.

7. The quartz brick cutting device according to claim 6, characterized in that: The saw teeth (522) of the diamond circular saw blade (521) have a tooth pitch of 6-12 mm and a tooth height of 15-35 mm; a chip removal groove (523) is provided between adjacent saw teeth (522); and an arc-shaped heat dissipation groove (524) is provided on the diamond circular saw blade (521).

8. The quartz brick cutting device according to claim 4, characterized in that: The clamping assembly (400) comprises a hydraulic clamping platform (410) and a bidirectional hydraulic cylinder group (420); the bidirectional hydraulic cylinder group (420) comprises a horizontal hydraulic cylinder (421) and a rotary hydraulic cylinder (425); an L-shaped clamping plate (422) is fixed to the end of the piston rod of the horizontal hydraulic cylinder (421) for clamping the quartz brick from the side; the inner side of the L-shaped clamping plate (422) has a rubber buffer layer; the output shaft of the rotary hydraulic cylinder (425) is connected to a rotary shaft (426) for driving the rotary shaft (426) to rotate; a pressing plate (427) is fixedly connected to the rotary shaft (426) for pressing the quartz brick, and a grid-shaped convex pattern is provided on the bottom surface of the pressing plate (427).

9. The quartz brick cutting device according to claim 4, characterized in that: The spray mechanism (610) is arranged above the cutting tool (520), and comprises a water tank, a nozzle (611), and a water pipe (612) connecting the water tank and the nozzle (611); the nozzle (611) sprays coolant toward the cutting tool (520) to cool the saw blade and flush away debris; the chip removal mechanism (620) comprises air nozzle brackets (621) arranged in pairs on both sides of the cutting station (130) and a high-pressure air nozzle (622) mounted on the air nozzle brackets (621); the high-pressure air nozzle (622) is connected to an air pump via an air pipe.

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