Numerical control double-end-face composite grinding machine with thickness detection function and detection method of numerical control double-end-face composite grinding machine

Abstract

The invention relates to the field of double-end-face grinding machines, and provides a numerical control double-end-face composite grinding machine with a thickness detection function and a detection method thereof.The numerical control double-end-face composite grinding machine comprises a machine base used for supporting, and a guide rail assembly is arranged in the machine base and used for conveying materials; the machine base is provided with a feeding assembly and a pushing assembly at the tops of the two ends of the guide rail assembly respectively, the feeding assembly is used for feeding materials, and the pushing assembly is used for discharging the materials; through the arrangement of the feeding assembly, the pushing assembly and other structures, the feeding detection assembly and the discharging detection assembly are integrated on the two sides of the guide rail assembly, the thickness of materials can be detected online before and after grinding, off-line sampling or mechanical arm grabbing is not needed, the detection process is synchronous with the production takt, the detection gap is eliminated, and the detection efficiency is improved. Continuous monitoring of each piece of discharged material is realized, the detection efficiency and the coverage rate are improved, and the problems of insufficient continuity, limited detection precision and poor product consistency in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of double-end face grinding machines, and more specifically, to a CNC double-end face composite grinding machine with thickness detection function and its detection method. Background Technology

[0002] Double-end grinding machines are widely used grinding equipment in fields such as magnetic materials, cemented carbide, and precision ceramics. They simultaneously grind both end faces of a workpiece using symmetrically arranged grinding heads on both sides, offering advantages such as high processing efficiency and good dimensional consistency. In the production of products such as tile-shaped magnets, the accuracy of the shaft length is a key quality indicator affecting the product's assembly performance and usability. Therefore, inspecting and controlling the thickness of the ground workpiece is a crucial step in ensuring product quality.

[0003] The existing patent application, CN117984173A, discloses an apparatus and method for online automatic detection of the thickness of ground parts on a double-end face grinder. This patent includes: a proximity switch, a controller, a robotic arm assembly, and a measuring table assembly. The proximity switch is fixed to the end of the discharge port of the double-end face grinder. When it detects a workpiece at its location, it sends a signal to the controller. The controller controls the robotic arm assembly to grasp the workpiece and place it at the measuring station. The measuring table assembly performs thickness detection on the workpiece.

[0004] However, the following shortcomings still exist: First, the detection mode is discrete single-piece detection. The workpiece needs to be taken out of the production line by a robot and transferred to an independent measuring table for offline detection. The detection efficiency is limited by the robot's cycle time, and continuous online detection of each piece cannot be achieved. The intermittent nature of the detection leads to the risk of missed detection. Second, only a single-point detection is set at the discharge end, which cannot screen out blanks with out-of-tolerance dimensions before grinding, resulting in ineffective processing and waste of resources. Third, the coolant and grinding debris adhering to the workpiece surface directly affect the detection accuracy, and the inconsistent workpiece detection posture further aggravates the measurement error, making it difficult to guarantee the accuracy and reliability of the detection results. Summary of the Invention

[0005] This invention proposes a CNC double-end face composite grinding machine with thickness detection function and its detection method, which solves the problems of insufficient continuity, limited detection accuracy and poor product consistency in related technologies.

[0006] The technical solution of the present invention is as follows: A CNC double-end face composite grinding machine with thickness detection function and its detection method, comprising a machine base for support, a guide rail assembly disposed inside the machine base for material transmission, a feeding assembly and a pushing assembly disposed at the top of both ends of the guide rail assembly, wherein the feeding assembly is used for feeding material in and the pushing assembly is used for feeding material out; grinding head assemblies are also disposed on both sides of the machine base, the grinding head assemblies being used for grinding the two sides of the material; The guide rail assembly is composed of a feeding guide rail group, an intermediate guide rail group and a discharging guide rail group connected in sequence. The feeding guide rail group is fixedly connected to the feeding end of the machine base, the discharging guide rail group is fixedly connected to the discharging end of the machine base, and the intermediate guide rail group is connected to one end of both the feeding guide rail group and the discharging guide rail group. Both sides of the feeding guide rail assembly are fixedly connected to a feeding detection component, which is used to pre-detect the feeding size of the material. Both sides of the discharge guide rail assembly are fixedly connected to a discharge detection assembly, which is used for cleaning and detecting the discharge of materials.

[0007] In a preferred embodiment of the present invention, the feed detection assembly comprises a feed guide plate, a feed detection end, and at least two ultrasonic sensors. The feed guide plate is adjustablely and fixedly connected to the top of the feed guide rail assembly. The feed detection end is fixedly connected to the top of the feed guide plate. At least two ultrasonic sensors are symmetrically arranged and installed inside the feed detection end. A sensor mounting plate is provided at the end of each ultrasonic sensor. The discharge detection assembly consists of a discharge guide plate, a side cleaning component, two auxiliary centering components, a discharge detection component, a pneumatic cleaning component, and an air pump. The air pump is installed on one side of the machine base, and the discharge guide plate is adjustablely and fixedly connected to the top of the discharge guide rail assembly. The side cleaning component, the auxiliary centering component, the discharge detection component, and the pneumatic cleaning component are sequentially installed on the top of the discharge guide plate.

[0008] As a preferred embodiment of the present invention, the side cleaning assembly consists of an inner groove mounting box and a blade mounting head. The inner groove mounting box is fixedly connected to the top of the discharge guide plate, and the blade mounting head is movably hinged to one side of the inner groove mounting box. A cleaning blade is fixedly connected to the end of the blade mounting head by screws. The cleaning blade is inclined and extends out of the interior of the inner groove mounting box. At least two symmetrically arranged first nitrogen springs are movably hinged between the blade mounting head and the inner groove mounting box. A dustproof bellows is also fixedly connected between the blade mounting head and the inner groove mounting box. The interior of the inner groove mounting box is provided with a through groove for conveying out dirt after cleaning.

[0009] In a preferred embodiment of the present invention, two auxiliary centering components are arranged side by side. Each auxiliary centering component consists of a centering guide box and a centering guide frame. The centering guide box is fixedly connected to the top of the discharge guide plate. The centering guide frame is slidably disposed inside the centering guide box. At least four symmetrically arranged second nitrogen springs are movably hinged between the centering guide frame and the centering guide box. A plurality of equally spaced rotating rollers are rotatably installed inside the centering guide frame, and the rotating rollers extend out of the centering guide box. At least one duckbill nozzle is installed inside the centering guide box. Two symmetrically arranged duckbill nozzles located on the two discharge guide plates are connected to an air inlet connection pipe. An air inlet precision regulating valve is installed on the air inlet connection pipe. An air inlet main pipe is installed at the input end of the air inlet precision regulating valve. The air inlet main pipe is connected to the output end of the air pump.

[0010] In a preferred embodiment of the present invention, the pneumatic cleaning assembly comprises an air knife body, which is mounted on the top of the discharge guide plate and located on one side of the side cleaning assembly. Two air knife bodies symmetrically arranged on the two discharge guide plates are connected to a common air knife branch pipe. An air knife precision regulating valve is installed on the air knife branch pipe, and an air knife main pipe is installed at the input end of the air knife precision regulating valve. The air knife main pipe is connected to the output end of the air pump.

[0011] As a preferred embodiment of the present invention, the discharge detection assembly consists of a discharge detection box and at least two laser sensors. The discharge detection box is installed on top of the discharge guide plate and on the other side of the cleaning assembly. The two laser sensors are symmetrically arranged and installed inside the discharge detection box. An inclined anti-fouling plate is also provided on the side of the discharge detection box connected to the cleaning assembly. The laser sensor has a power supply terminal at its end and a signal connection terminal at its top.

[0012] In a preferred embodiment of the present invention, the feeding assembly comprises a feeding tile-shifting mounting frame and a feeding electric cylinder. The feeding tile-shifting mounting frame is fixedly connected to one side of the machine base and disposed on the top of the feeding guide rail assembly. The feeding electric cylinder is mounted on one side of the feeding tile-shifting mounting frame. A tile-shifting guide rail is fixedly connected to the top of the feeding tile-shifting mounting frame. A tile-shifting slide is movably sleeved on the tile-shifting guide rail. The tile-shifting slide is connected to the output end of the feeding electric cylinder. A tile-shifting block is fixedly connected to the bottom of the tile-shifting slide. The material pushing assembly consists of a material pushing and tile-removing mounting frame and a material pushing electric cylinder. The material pushing and tile-removing mounting frame is fixedly connected to the other side of the machine base and is located on the top of the discharge guide rail assembly. The material pushing electric cylinder is installed on one side of the material pushing and tile-removing mounting frame. A tile pushing guide rail is fixedly connected to one side of the material pushing and tile-removing mounting frame. A tile pushing slider is movably sleeved on the outer circumferential surface of the tile pushing guide rail. The tile pushing slider is connected to the output end of the material pushing electric cylinder. A tile pushing block is installed at the bottom of the tile pushing slider.

[0013] As a preferred embodiment of the present invention, the base is further provided with a pressure tile assembly and a water channel assembly penetrating its top; The tile pressing assembly consists of a tile pressing mounting frame and a tile pressing cylinder. The tile pressing mounting frame is fixedly connected to the top of the machine base. The tile pressing cylinder is installed on the top of the tile pressing mounting frame. A tile pressing shaft is installed at the output end of the tile pressing cylinder. A height adjustment handle is sleeved on the outer circumferential surface of the tile pressing shaft. A tile pressing sheet is fixedly connected to the bottom of the tile pressing shaft. The water system assembly consists of a main water pipe that passes through the top of the base and connects to the top of the base. Water connection pipes and flushing heads are respectively installed at both ends of the main water pipe, and a pneumatic ball valve is also installed on the main water pipe.

[0014] In a preferred embodiment of the present invention, the grinding head assembly consists of two grinding head motors, which are respectively installed on both sides of the base. The output end of the grinding head motor is fitted with a grinding head axial adjustment component, which is connected to the base. The grinding head body is installed at the end of the output end of the grinding head motor, and a grating sensor is also installed on one side of the grinding head assembly.

[0015] Thickness measurement method for double-end grinders: S1: Preset thickness parameters. Set the standard thickness value and allowable deviation range of the magnetic tile to be processed through the touch screen of the electronic control system, and set the detection threshold of the feed detection component and the output detection assembly respectively. S2: Feed pre-inspection. When the magnetic tile to be processed is conveyed to the feed guide rail by the feeding component, the feed detection end of the feed detection component performs non-contact pre-inspection of the thickness of the magnetic tile, obtains the thickness pre-inspection value, and transmits the pre-inspection value to the PLC control system. S3: Thickness comparison and feedback. The PLC control system compares the pre-detected thickness value with the preset thickness standard value. If it exceeds the allowable deviation range, the control system issues an alarm signal and stops feeding. If it is within the allowable deviation range, the magnetic tile is allowed to continue entering the grinding area. S4: Thickness monitoring during grinding. During the grinding process of the grinding head assembly on both sides of the magnetic tile, the laser sensor in the discharge detection assembly is kept in a ready-to-trigger state. The pneumatic cleaning assembly is used to periodically or continuously blow the laser sensor detection area to prevent dust accumulation from affecting the detection accuracy. S5: Final inspection of the material output. After the magnetic tile is ground, it enters the material output inspection component area after being aligned by the auxiliary alignment component. Two symmetrically arranged laser sensors simultaneously perform final inspection of the thickness of the magnetic tile, obtain the final thickness inspection value, and transmit the final inspection value to the PLC control system. S6: Detection result processing. The PLC control system compares the final thickness detection value with the preset thickness standard value. If it meets the standard, the magnetic tile is sent out by the pushing component. If it does not meet the standard, the control system records the magnetic tile information and sends a sorting signal. At the same time, it automatically adjusts the grinding parameters of the grinding head component according to the deviation value to achieve closed-loop control.

[0016] The working principle and beneficial effects of this invention are as follows: 1. This invention integrates the infeed detection component and the outfeed detection assembly on both sides of the guide rail component by setting up the feeding component, the pushing component and the outfeed detection assembly, etc., so that the thickness detection of the material can be completed online before and after grinding, without the need for offline sampling or robotic gripping. The detection process is synchronized with the production cycle, eliminating detection gaps and realizing continuous and uninterrupted monitoring of each outfeed, thereby improving detection efficiency and coverage.

[0017] 2. This invention, through the design of a side cleaning component and an auxiliary centering component, first scrapes away side burrs and debris with the cleaning blades of the side cleaning component before the material enters the discharge detection area. Then, the pneumatic cleaning component blows away the surface coolant residue with a high-speed air curtain, ensuring the detection surface is clean. At the same time, the auxiliary centering component uses the cooperation of a rotating roller and a second nitrogen spring to automatically center and position the material, eliminating detection posture deviation. Combined with symmetrically arranged laser sensors for non-contact measurement, the accuracy and stability of thickness detection are improved.

[0018] 3. This invention, through the setup of the feed detection component, control system, and other structures, uses ultrasonic sensors to symmetrically emit ultrasonic beams before the material enters the grinding area. It acquires the thickness pre-detection value in real time and compares it with a preset threshold, automatically screening out blanks with out-of-tolerance dimensions, avoiding ineffective processing and resource waste. The pre-inspection signal and the final inspection signal are fed back to the control system, forming a closed-loop quality control process of feed pre-inspection, process monitoring, and final inspection. When the final inspection fails, the defective product is automatically marked and the grinding parameters are adjusted, effectively ensuring product consistency. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the overall structure of the present invention; Figure 4 This is a schematic diagram of the overall structure of the feeding assembly of the present invention; Figure 5 This is a schematic diagram of the overall structure of the feeding assembly of the present invention; Figure 6 This is a schematic diagram of the overall structure of the pressure tile assembly of the present invention; Figure 7 This is a schematic diagram of the overall structure of the grinding head assembly of the present invention; Figure 8 This is a schematic diagram of the overall structure of the waterway component of the present invention; Figure 9 This is a schematic diagram of the overall structure of the guide rail assembly of the present invention; Figure 10 This is a schematic diagram of the overall structure of the feed detection component and the discharge detection assembly of the present invention; Figure 11 This is a schematic diagram of the overall structure of the feed detection end of the present invention; Figure 12 This is a side view of the overall structure of the feed detection end of the present invention; Figure 13 This is a schematic diagram of the overall structure of the material discharge detection assembly of the present invention; Figure 14 This is a schematic diagram of a single side of the material discharge detection assembly of the present invention; Figure 15 This is a schematic diagram of the overall structure of the side cleaning component of the present invention; Figure 16 This is a schematic diagram of the overall structure of the auxiliary centering component of the present invention; Figure 17 This is a schematic diagram of the internal structure of the centering auxiliary component of the present invention; Figure 18 This is a schematic diagram of the overall structure of the discharge detection component of the present invention; Figure 19 This is a schematic diagram of the internal structure of the material discharge detection component of the present invention.

[0021] In the diagram: 1. Base; 2. Feeding assembly; 21. Feeding tile ejector mounting bracket; 22. Feeding electric cylinder; 23. Tile ejector guide rail; 24. Tile ejector sliding plate; 25. Tile ejector block; 3. Material pushing assembly; 31. Material pushing and tile ejector mounting bracket; 32. Material pushing electric cylinder; 33. Tile pusher guide rail; 34. Tile pusher slider; 35. Tile pusher block; 4. Tile pressing assembly; 41. Tile pressing mounting bracket; 42. Tile pressing cylinder; 43. Height adjustment handle; 44. Tile pressing shaft; 45. Tile pressing sheet; 5. Grinding head assembly; 51. Grinding head motor; 52. Grinding head axial adjustment assembly; 53. Grinding head body; 54. Optical grating sensor; 6. Water system components; 61. Main water pipe; 62. Water connection pipe; 63. Flushing head; 64. Pneumatic ball valve; 7. Guide rail assembly; 71. Feed guide rail assembly; 72. Intermediate guide rail assembly; 73. Discharge guide rail assembly; 8. Feed detection assembly; 81. Feed guide plate; 82. Feed detection end; 84. Ultrasonic sensor; 85. Sensor mounting plate; 9. Discharge inspection assembly; 91. Discharge guide plate; 92. Side cleaning assembly; 921. Inner groove mounting box; 922. Blade mounting head; 923. Cleaning blade; 924. First nitrogen spring; 925. Dustproof bellows; 93. Auxiliary centering assembly; 931. Centering guide box; 932. Second nitrogen spring; 933. Centering guide frame; 934. Rotary roller; 935. Duck nozzle; 936. Inlet connecting branch pipe; 937. Inlet precision regulating valve; 938. Main inlet pipe; 94. Discharge detection assembly; 941. Discharge detection box; 942. Laser sensor; 943. Power supply terminal; 944. Signal connection terminal; 945. Sloping anti-fouling plate; 95. Pneumatic cleaning assembly; 951. Air knife body; 952. Air knife branch pipe; 953. Air knife precision regulating valve; 954. Air knife main pipe; 96. Air pump. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] Example like Figures 1-19 As shown, a CNC double-end face composite grinding machine with thickness detection function and its detection method are disclosed. The machine base 1 is used for support. A guide rail assembly 7 is arranged inside the machine base 1 for material transmission. A feeding assembly 2 and a pushing assembly 3 are respectively arranged at the top of both ends of the guide rail assembly 7. The feeding assembly 2 is used for feeding material in, and the pushing assembly 3 is used for feeding material out. Grinding head assemblies 5 are also arranged on both sides of the machine base 1 for grinding the two sides of the material. The guide rail assembly 7 is composed of a feeding guide rail group 71, an intermediate guide rail group 72 and a discharging guide rail group 73 connected in sequence. The feeding guide rail group 71 is fixedly connected to the feeding end of the machine base 1, the discharging guide rail group 73 is fixedly connected to the discharging end of the machine base 1, and the intermediate guide rail group 72 is connected to one end of both the feeding guide rail group 71 and the discharging guide rail group 73. Both sides of the feeding guide rail assembly 71 are fixedly connected to the feeding detection component 8, which is used to pre-detect the feeding size of the material. Both sides of the discharge guide rail assembly 73 are fixedly connected to the discharge detection assembly 9, which is used for cleaning and detecting the discharge of materials.

[0024] A CNC double-end face composite grinding machine with thickness detection function includes a support base 1. The base 1 is made of gray cast iron and undergoes aging treatment, possessing characteristics such as good shock resistance and high rigidity, ensuring the structural stability of the equipment during high-speed grinding. A guide rail assembly 7 is installed inside the base 1 for material transfer. A feeding assembly 2 and a pushing assembly 3 are respectively installed at the top of both ends of the guide rail assembly 7 on the base 1. The feeding assembly 2 is used for material feeding, and the pushing assembly 3 is used for material discharge. Grinding head assemblies 5 are also installed on both sides of the base 1 for grinding the material from both sides. The surface is polished. The guide rail assembly 7 is composed of a feeding guide rail group 71, an intermediate guide rail group 72, and a discharging guide rail group 73 connected in sequence. The feeding guide rail group 71 is fixedly connected to the feeding end of the machine base 1 by bolts. The discharging guide rail group 73 is fixedly connected to the discharging end of the machine base 1 by bolts. The intermediate guide rail group 72 is connected to one end of both the feeding guide rail group 71 and the discharging guide rail group 73. The feeding guide rail group 71 and the intermediate guide rail group 72 are connected by positioning pins and bolts. The discharging guide rail group 73 and the intermediate guide rail group 72 are also connected by positioning pins and bolts, so that the three guide rails together form a complete material transmission channel. Both sides of the feeding guide rail assembly 71 are fixedly connected with feeding detection components 8. The feeding detection components 8 are used to pre-detect the feeding size of the material. When the material enters the feeding guide rail assembly 71, the feeding detection components 8 obtain the thickness parameters of the material in real time through non-contact detection and transmit the detection signal to the electronic control system. Both sides of the discharge guide rail assembly 73 are fixedly connected to the discharge detection assembly 9. The discharge detection assembly 9 is used to clean the material during discharge and to detect the material discharge. After the material has completed double-end grinding, it enters the discharge guide rail assembly 73. The discharge detection assembly 9 first cleans the grinding debris attached to the surface of the material, and then performs a final detection on the thickness of the ground material to ensure that all discharged materials meet the processing requirements. By integrating the feed detection component 8 and the discharge detection assembly 9 on both sides of the guide rail assembly 7, the detection signals of the material before entering the grinding area and after leaving the grinding area are fed back to the CNC system in real time. When the pre-detection value exceeds the set range, the system automatically adjusts the feeding rhythm or issues an alarm. When the final inspection value is unqualified, the system can mark the defective product, thus forming a closed-loop quality control.

[0025] The feed detection assembly 8 consists of a feed guide plate 81, a feed detection end 82, and at least two ultrasonic sensors 84. The feed guide plate 81 is adjustablely and fixedly connected to the top of the feed guide rail assembly 71. The feed detection end 82 is fixedly connected to the top of the feed guide plate 81. At least two ultrasonic sensors 84 are symmetrically arranged and installed inside the feed detection end 82. A sensor mounting plate 85 is provided at the end of each ultrasonic sensor 84. The discharge detection assembly 9 consists of a discharge guide plate 91, a side cleaning component 92, two auxiliary centering components 93, a discharge detection component 94, a pneumatic cleaning component 95, and an air pump 96. An air pump 96 is installed on one side of the base 1. The discharge guide plate 91 is adjustablely and fixedly connected to the top of the discharge guide rail assembly 73. The side cleaning component 92, the auxiliary centering component 93, the discharge detection component 94, and the pneumatic cleaning component 95 are sequentially installed on the top of the discharge guide plate 91.

[0026] The feeding detection assembly 8 consists of a feeding guide plate 81, a feeding detection end 82, and at least two ultrasonic sensors 84. The feeding guide plate 81 is made of stainless steel and has an elongated hole at its bottom. It is fixedly connected to the top of the feeding guide rail assembly 71 by bolts. Specifically, after loosening the bolts, the feeding guide plate 81 can slide along the width direction of the feeding guide rail assembly 71 to accommodate materials of different widths. After adjustment, the bolts are tightened to fix it. The feed detection end 82 is fixedly connected to the top of the feed guide plate 81 by bolts. The feed detection end 82 has an installation cavity inside, and at least two ultrasonic sensors 84 are symmetrically arranged and installed in the installation cavity. The detection axes of the two ultrasonic sensors 84 are arranged opposite to each other, so that the detection beams converge in the center area of ​​the material thickness. A sensor mounting plate 85 is provided at the end of the ultrasonic sensor 84. The sensor mounting plate 85 is fixedly connected to the feed detection end 82 by screws. The sensor mounting plate 85 also provides tail support and limit for the ultrasonic sensor 84. The discharge detection assembly 9 consists of a discharge guide plate 91, a side cleaning component 92, two auxiliary centering components 93, a discharge detection component 94, a pneumatic cleaning component 95, and an air pump 96. The air pump 96 is installed on one side of the base 1 and is fixed to the side bracket of the base 1 by bolts. The output end of the air pump 96 is connected to the side cleaning component 92, the auxiliary centering component 93, and the pneumatic cleaning component 95 through multiple air pipes. The discharge guide plate 91 is made of stainless steel and has an elongated hole at its bottom. It is fixedly connected to the top of the discharge guide rail assembly 73 by bolts in an adjustable manner. The adjustment method is the same as that of the infeed guide plate 81. The side cleaning component 92, auxiliary centering component 93, discharge detection component 94, and pneumatic cleaning component 95 are sequentially installed on top of the discharge guide plate 91. The specific installation sequence is as follows: First, the side cleaning component 92 is installed along the material's forward direction to remove burrs and debris adhering to the sides of the material; then, the pneumatic cleaning component 95 is installed to purge the material surface with high-pressure gas; next, two auxiliary centering components 93 are installed side by side to guide the material's centering; finally, the discharge detection component 94 is installed to perform final thickness detection on the cleaned material. Each component is aligned and adjusted with the center line of the discharge guide rail assembly 73 as a reference during installation to ensure that the material maintains the correct posture throughout the transmission process.

[0027] The side cleaning assembly 92 consists of an inner groove mounting box 921 and a blade mounting head 922. The inner groove mounting box 921 is fixedly connected to the top of the discharge guide plate 91. The blade mounting head 922 is movably hinged to one side of the inner groove mounting box 921. The end of the blade mounting head 922 is fixedly connected to a cleaning blade 923 by screws. The cleaning blade 923 is beveled and extends out of the inner groove mounting box 921. At least two symmetrically arranged first nitrogen springs 924 are hinged together between the blade mounting head 922 and the inner groove mounting box 921. A dustproof bellows 925 is also fixedly connected between the blade mounting head 922 and the inner groove mounting box 921. The inner groove mounting box 921 has a through groove inside, which is used to send out the dirt after cleaning.

[0028] The side cleaning assembly 92 consists of an inner groove mounting box 921 and a blade mounting head 922. The inner groove mounting box 921 adopts a rectangular box structure and is fixedly connected to the top of the discharge guide plate 91 by bolts. The inner groove mounting box 921 has a through groove inside, which runs through the bottom and side of the inner groove mounting box 921 for the discharge of dirt after cleaning. The blade mounting head 922 is connected to one side of the inner groove mounting box 921 via a hinge. Specifically, the hinge structure is as follows: one end of the blade mounting head 922 is equipped with a hinge sleeve, and the side of the inner groove mounting box 921 is equipped with a hinge seat. The hinge sleeve and the hinge seat are connected by a pin, allowing the blade mounting head 922 to swing around the pin axis. A cleaning blade 923 is fixedly connected to the end of the blade mounting head 922 by screws. The cleaning blade 923 is beveled and extends into the inner groove mounting box 921, forming an angle with the material travel direction. When material passes through, the cutting edge of the cleaning blade 923 contacts the side of the material, scraping away burrs and debris adhering to the side. At least two symmetrically arranged first nitrogen springs 924 are hinged together between the blade mounting head 922 and the inner groove mounting box 921. One end of each first nitrogen spring 924 is connected to the blade mounting head 922 via a ball head bolt, and the other end is connected to the inner groove mounting box 921 via a ball head bolt. A first nitrogen spring 924 is symmetrically arranged on both sides of the central axis of the blade mounting head 922. The first nitrogen spring 924 is filled with high-pressure nitrogen and can provide constant elastic force. Its function is to always apply a force that makes the blade mounting head 922 move closer to the inner groove mounting box 921 when the blade mounting head 922 is subjected to external force, so that the cleaning blade 923 and the side of the material maintain a constant contact pressure. When there are slight fluctuations in the size of the material, the first nitrogen spring 924 automatically adjusts the swing angle of the blade mounting head 922 through its own extension and contraction, so that the cleaning blade 923 always keeps close to the side of the material without generating excessive rigid impact. A dustproof bellows plate 925 is also fixedly connected between the blade mounting head 922 and the inner groove mounting box 921. The dustproof bellows plate 925 is made of rubber, and its two ends are fixedly connected to the blade mounting head 922 and the inner groove mounting box 921 respectively through pressure plates. The dustproof bellows plate 925 extends and retracts with the swing of the blade mounting head 922 to prevent grinding debris from entering the hinge part and the moving part of the first nitrogen spring 924. The through groove inside the inner groove mounting box 921 is located directly below the cleaning blade 923. The debris scraped by the cleaning blade 923 falls into the through groove under the action of gravity and slides down the through groove to the chip collection box outside the equipment, thus realizing the cleaning function.

[0029] Two auxiliary centering components 93 are arranged side by side. Each auxiliary centering component 93 consists of a centering guide box 931 and a centering guide frame 933. The centering guide box 931 is fixedly connected to the top of the discharge guide plate 91. The centering guide frame 933 is slidably arranged inside the centering guide box 931. At least four symmetrically arranged second nitrogen springs 932 are movably hinged between the centering guide frame 933 and the centering guide box 931. Several equally spaced rotating rollers 934 are rotatably installed inside the centering guide frame 933. The rotating rollers 934 extend out of the centering guide box 931. At least one duckbill nozzle 935 is installed inside the centering guide box 931. The two symmetrically arranged duckbill nozzles 935 on the two discharge guide plates 91 are connected to an air inlet connection pipe 936. An air inlet precision regulating valve 937 is installed on the air inlet precision regulating valve 937. An air inlet main pipe 938 is installed at the input end of the air inlet precision regulating valve 937. The air inlet main pipe 938 is connected to the output end of the air pump 96.

[0030] Two auxiliary centering components 93 are arranged side by side, that is, two identical centering mechanisms are arranged back and forth along the material travel direction to provide continuous centering guidance. The auxiliary centering component 93 consists of a centering guide box 931 and a centering guide frame 933. The centering guide box 931 adopts a rectangular box structure, and its bottom is provided with a mounting flange, which is fixedly connected to the top of the discharge guide plate 91 by bolts. The centering guide frame 933 is slidably arranged inside the centering guide box 931. Specifically, the sliding connection method is that linear guide rails are provided on both sides inside the centering guide box 931. The centering guide frame 933 is provided with a slider that cooperates with the linear guide rail on its outer side, so that the centering guide frame 933 can slide back and forth in a direction perpendicular to the material travel direction. At least four symmetrically arranged second nitrogen springs 932 are movably hinged between the centering guide frame 933 and the centering guide box 931. One end of the second nitrogen spring 932 is connected to the centering guide frame 933 by a ball head bolt, and the other end is connected to the centering guide box 931 by a ball head bolt. The four second nitrogen springs 932 are arranged in a rectangle near the four corner points of the centering guide frame 933. The second nitrogen spring 932 is filled with high-pressure nitrogen. Its function is to apply a constant thrust to the centering guide frame 933, so that the two symmetrically arranged centering guide frames 933 move closer to each other. Several equally spaced rotating rollers 934 are rotatably installed inside the centering guide frame 933. The rotating rollers 934 are installed in the frame of the centering guide frame 933 through bearings. The axis of the rotating rollers 934 is perpendicular to the material travel direction and parallel to the material plane. The rotating rollers 934 extend out of the centering guide box 931, that is, the outer circumferential surface of the rotating rollers 934 protrudes from the side of the centering guide box 931 facing the material. As the material moves forward, its two sides contact the two rotating rollers 934. Under the thrust of the second nitrogen spring 932, the rotating rollers 934 press against the sides of the material with a certain pressure. The material's forward movement drives the rotating rollers 934 to rotate. The rolling motion of the rotating rollers 934 converts sliding friction into rolling friction, reducing scratches on the material surface. At least one duckbill nozzle 935 is installed inside the centering guide box 931. The air inlet of the duckbill nozzle 935 passes through the side wall of the centering guide box 931 and connects to an external air inlet pipe. The air outlet of the nozzle 935 has a flat fan-shaped structure, facing the material side and the contact area with the roller 934. Two symmetrically arranged duck nozzles 935 on the two discharge guide plates 91 are connected to an air inlet connection pipe 936. The air inlet connection pipe 936 connects the two duck nozzles 935 in parallel through a three-way connector. An air inlet precision regulating valve 937 is installed on the air inlet connection pipe 936. An air inlet main pipe 938 is installed at the input end of the air inlet precision regulating valve 937. The air inlet main pipe 938 is connected to the output end of the air pump 96. The compressed air output by the air pump 96 passes through the main air intake pipe 938, the air intake precision regulating valve 937, and the air intake connecting branch pipe 936 in sequence before entering the duck nozzle 935. The air intake precision regulating valve 937 is used to regulate the air supply pressure and flow rate so that the airflow ejected from the duck nozzle 935 can blow away the tiny debris in the contact area between the rotating roller 934 and the material, preventing debris from embedding between the rotating roller 934 and the material and causing scratches or misalignment.

[0031] The pneumatic cleaning assembly 95 consists of an air knife body 951, which is installed on the top of the discharge guide plate 91 and located on one side of the side cleaning assembly 92. The two air knife bodies 951, which are symmetrically arranged on the two discharge guide plates 91, are connected to the air knife branch pipe 952. An air knife precision regulating valve 953 is installed on the air knife branch pipe 952. An air knife main pipe 954 is installed at the input end of the air knife precision regulating valve 953. The air knife main pipe 954 is connected to the output end of the air pump 96.

[0032] The pneumatic cleaning assembly 95 is composed of an air knife body 951. The air knife body 951 adopts an aluminum alloy extrusion molding structure and has a narrow airflow channel inside. The air outlet is a continuous straight slit. When compressed air enters the air knife body 951, a high-speed and uniform airflow curtain is formed at the slit. The air knife body 951 is installed on the top of the discharge guide plate 91 and on one side of the side cleaning component 92. Specifically, the installation position is in front of the side cleaning component 92 along the material travel direction. The installation method is to fix the air knife body 951 above the discharge guide plate 91 with brackets and bolts, so that the air outlet of the air knife body 951 faces the upper surface of the material and the air outlet maintains a certain distance from the material surface. Two air knife bodies 951, symmetrically arranged on two discharge guide plates 91, are connected to an air knife branch pipe 952. The air knife branch pipe 952 connects the two air knife bodies 951 in parallel through a three-way connector. An air knife precision regulating valve 953 is installed on the air knife branch pipe 952. An air knife main pipe 954 is installed at the input end of the air knife precision regulating valve 953. The air knife main pipe 954 is connected to the output end of the air pump 96. The compressed air output by the air pump 96 passes through the air knife main pipe 954, the air knife precision regulating valve 953, and the air knife branch pipe 952 in sequence before entering the air knife body 951. The air knife precision regulating valve 953 is used to precisely control the airflow pressure and flow rate of the air knife, so that the air curtain ejected from the air knife body 951 has sufficient impact force. When the material passes under the air knife body 951, the high-speed air curtain impacts the upper surface and sides of the material at a certain angle, blowing away the coolant residue, fine debris and other contaminants that adhered to the surface of the material during the grinding process, thus achieving the drying and cleaning of the material surface. Since the air curtain generated by the air knife is continuous and the pressure is uniform, it will not produce point impact force on the material, thus avoiding displacement or overturning of the material during the cleaning process.

[0033] The discharge detection assembly 94 consists of a discharge detection box 941 and at least two laser sensors 942. The discharge detection box 941 is installed on top of the discharge guide plate 91 and is located on the other side of the cleaning assembly. The two laser sensors 942 are symmetrically arranged and installed inside the discharge detection box 941. An inclined anti-fouling plate 945 is also provided on the side of the discharge detection box 941 that is connected to the cleaning assembly. A power supply terminal 943 is installed at the end of the laser sensor 942, and a signal connection terminal 944 is installed at the top of the laser sensor 942.

[0034] The discharge detection box 941 adopts a rectangular box structure with a mounting flange at the bottom, which is bolted to the top of the discharge guide plate 91 and positioned on the other side of the cleaning assembly, i.e., after the pneumatic cleaning assembly 95 along the material travel direction. The discharge detection box 941 has an internal detection chamber with symmetrical mounting holes on its two side walls. Two laser sensors 942 are symmetrically arranged and installed inside the discharge detection box 941. Specifically, the main body of the laser sensor 942 is inserted into the mounting hole and fixed to the side wall of the discharge detection box 941 with a locking nut. The emitting ends of the two laser sensors 942 are positioned opposite each other, so that the laser beams converge in the center area of ​​the material thickness. A power supply terminal 943 is installed at the end of the laser sensor 942. The power supply terminal 943 is connected to the DC power module of the equipment via a wire to provide operating power to the laser sensor 942. A signal connection terminal 944 is installed on the top of the laser sensor 942. The signal connection terminal 944 is connected to the analog input module of the programmable logic controller via a shielded cable to transmit the detected distance signal to the programmable logic controller in real time. A sloping anti-fouling plate 945 is also provided on the side of the discharge detection box 941 connected to the cleaning assembly. The sloping anti-fouling plate 945 is fixed to the side of the discharge detection box 941 with screws, and its sloping surface faces the cleaning assembly. When the pneumatic cleaning assembly 95 or the side cleaning assembly 92 is working... The splashed contaminants impact the inclined anti-fouling plate 945 and slide down the inclined surface, preventing contaminants from directly splashing onto the detection window of the laser sensor 942. The working principle of the laser sensor 942 is as follows: the laser emitter emits a laser beam, which shines on the side surface of the material and reflects back to the receiver. The position of the side surface of the material is calculated by measuring the flight time of the laser beam or by using the triangulation principle. Two symmetrically arranged laser sensors 942 measure the positions of the two sides of the material respectively. The programmable logic controller calculates the actual thickness of the material based on the measurement values ​​of the two sensors and the fixed distance between the two sensors. The detection process is carried out continuously during the material's movement, realizing online thickness detection of each piece of discharged material.

[0035] The feeding assembly 2 consists of a feeding tile-shifting mounting frame 21 and a feeding electric cylinder 22. The feeding tile-shifting mounting frame 21 is fixedly connected to one side of the machine base 1 and is set on the top of the feeding guide rail assembly 71. The feeding electric cylinder 22 is installed on one side of the feeding tile-shifting mounting frame 21. A tile-shifting guide rail 23 is fixedly connected to the top of the feeding tile-shifting mounting frame 21. A tile-shifting slide plate 24 is movably sleeved on the tile-shifting guide rail 23. The tile-shifting slide plate 24 is connected to the output end of the feeding electric cylinder 22. A tile-shifting block 25 is fixedly connected to the bottom of the tile-shifting slide plate 24. The material pushing assembly 3 consists of a material pushing and tile-removing mounting frame 31 and a material pushing electric cylinder 32. The material pushing and tile-removing mounting frame 31 is fixedly connected to the other side of the machine base 1 and is set on the top of the discharge guide rail assembly 73. The material pushing electric cylinder 32 is installed on one side of the material pushing and tile-removing mounting frame 31. A tile pushing guide rail 33 is fixedly connected to one side of the material pushing and tile-removing mounting frame 31. A tile pushing slider 34 is movably sleeved on the outer circumferential surface of the tile pushing guide rail 33. The tile pushing slider 34 is connected to the output end of the material pushing electric cylinder 32. A tile pushing block 35 is installed at the bottom of the tile pushing slider 34.

[0036] The feeding tile-shifting mounting frame 21 adopts a welded steel plate structure and is fixedly connected to one side of the machine base 1 by bolts and set on the top of the feeding guide rail assembly 71. An adjusting shim is provided between the bottom of the feeding tile-shifting mounting frame 21 and the machine base 1 to adjust the installation height. The feeding electric cylinder 22 is installed on one side of the feeding tile-shifting mounting frame 21. Specifically, the cylinder body of the feeding electric cylinder 22 is fixedly connected to the feeding tile-shifting mounting frame 21 through a flange. The push rod of the feeding electric cylinder 22 extends horizontally. The top of the feeding tile-shifting mounting frame 21 is fixedly connected to the tile-shifting guide rail 23. The tile-shifting guide rail 23 is a linear guide rail. Its main body is fixedly connected to the feeding tile-shifting mounting frame 21 by bolts. The tile-shifting slide plate 24 is movably sleeved on the tile-shifting guide rail 23. The bottom of the tile-shifting slide plate 24 is provided with a slider that cooperates with the tile-shifting guide rail 23, so that the tile-shifting slide plate 24 can move linearly back and forth along the tile-shifting guide rail 23. The output end of the deflecting plate 24 is connected to the output end of the feeding electric cylinder 22. The end of the push rod of the feeding electric cylinder 22 is connected to the deflecting plate 24 through a floating joint. The floating joint can compensate for the coaxiality error between the push rod and the deflecting plate 24, and prevent the push rod from bending or wearing due to installation deviation. The bottom of the deflecting plate 24 is fixedly connected to the deflecting block 25. The deflecting block 25 is made of wear-resistant material and its shape matches the end face of the material. The pushing assembly 3 consists of the pushing deflecting plate mounting frame 31 and the pushing electric cylinder 32. The pushing deflecting plate mounting frame 31 is fixedly connected to the other side of the machine base 1 by bolts and is set on the top of the discharge guide rail group 73. The structure of the pushing deflecting plate mounting frame 31 is symmetrical to the feeding deflecting plate mounting frame 21. The pusher cylinder 32 is installed on one side of the pusher and tile-moving mounting bracket 31, with the same installation method as the feeding cylinder 22. A pusher guide rail 33 is fixedly connected to one side of the pusher and tile-moving mounting bracket 31. The pusher guide rail 33 is a linear guide rail, and its main body is fixedly connected to the pusher and tile-moving mounting bracket 31 by bolts. A pusher slider 34 is movably fitted on the outer circumference of the pusher guide rail 33. The pusher slider 34 cooperates with the pusher guide rail 33 and can perform linear reciprocating motion along the pusher guide rail 33. The pusher slider 34 is connected to the output end of the pusher cylinder 32, and the connection method is also a floating joint. A pusher block 35 is installed at the bottom of the pusher slider 34, and the shape of the pusher block 35 matches the end face of the material. Both the feeding cylinder 22 and the pusher cylinder 32 are servo motor-driven electric cylinders with integrated position feedback units. The programmable logic controller controls the displacement distance and movement speed of the cylinder through pulse signals. During operation, the feeding electric cylinder 22 drives the tile-moving slide plate 24 forward, and the tile-moving block 25 pushes the material along the feeding guide rail group 71 into the grinding area; after grinding is completed, the pushing electric cylinder 32 drives the tile-moving slider 34 forward, and the tile-moving block 35 pushes the material along the discharge guide rail group 73 to the next process.

[0037] The base 1 is also equipped with a pressure tile assembly 4 and a water channel assembly 6 that runs through its top; The tile pressing assembly 4 consists of a tile pressing mounting bracket 41 and a tile pressing cylinder 42. The tile pressing mounting bracket 41 is fixedly connected to the top of the machine base 1. The tile pressing cylinder 42 is installed on the top of the tile pressing mounting bracket 41. A tile pressing shaft 44 is installed at the output end of the tile pressing cylinder 42. A height adjustment handle 43 is sleeved on the outer circumferential surface of the tile pressing shaft 44. A tile pressing plate 45 is fixedly connected to the bottom of the tile pressing shaft 44. The water system assembly 6 consists of a water main pipe 61, which passes through the top of the base 1 and connects to the top of the base 1. Water connection pipes 62 and flushing heads 63 are installed at both ends of the water main pipe 61, and a pneumatic ball valve 64 is also installed on the water main pipe 61.

[0038] The machine base 1 is also equipped with a tile pressing assembly 4 and a water channel assembly 6 that runs through its top. The tile pressing assembly 4 consists of a tile pressing mounting frame 41 and a tile pressing cylinder 42. The tile pressing mounting frame 41 adopts a portal structure and spans the top of the machine base 1. Its two side columns are fixedly connected to the side of the machine base 1 by bolts. The tile pressing cylinder 42 is installed on the top of the tile pressing mounting frame 41. The flange end of the tile pressing cylinder 42 is fixedly connected to the crossbeam of the tile pressing mounting frame 41 by bolts. The piston rod of the tile pressing cylinder 42 extends vertically downward. A tile pressing shaft 44 is installed at the output end of the tile pressing cylinder 42. The upper end of the tile pressing shaft 44 is threadedly connected to the piston rod of the tile pressing cylinder 42 and a locking nut is provided. A height adjustment handle 43 is fitted on the outer circumferential surface of the pressing roller shaft 44. The height adjustment handle 43 and the pressing roller shaft 44 are connected by a thread. Rotating the height adjustment handle 43 can move the pressing roller shaft 44 up and down relative to the pressing roller mounting bracket 41, thereby achieving coarse adjustment of the pressing roller height. A pressing roller plate 45 is fixedly connected to the bottom of the pressing roller shaft 44. The pressing roller plate 45 is made of wear-resistant material and its bottom surface is flat but does not contact the material. The pressing roller cylinder 42 is connected to the compressed air source through a solenoid valve. When compressed air is introduced into the rodless chamber of the pressing roller cylinder 42, the piston rod drives the pressing roller plate 45 to move downward, preventing the material from jumping or shifting due to the grinding force during the grinding process. The water system assembly 6 consists of a main water pipe 61, which is made of stainless steel and runs through the top of the base 1, connecting to the top of the base 1. The main water pipe 61 passes through a mounting hole in the top of the base 1 and connects to the cooling water inlet on the top of the base 1 via a pipe fitting. A water connection pipe 62 and a flushing head 63 are respectively installed at both ends of the main water pipe 61. One end of the water connection pipe 62 is threaded to the main water pipe 61, and the other end is connected to an external cooling water source. The flushing head 63 is threaded to the main water pipe 61, and the outlet of the flushing head 63... Facing the contact area between the grinding head assembly 5 and the material, a pneumatic ball valve 64 is also installed on the water main pipe 61. The actuator of the pneumatic ball valve 64 is connected to a compressed air source through an air pipe. The opening and closing of the pneumatic ball valve 64 is controlled by a solenoid valve. When the equipment starts grinding, the solenoid valve is energized, and the compressed air drives the pneumatic ball valve 64 to open. Cooling water is sprayed from the flushing head 63 to the grinding area through the water main pipe 61 to cool the grinding wheel and the material and flush away grinding debris. When the equipment stops, the solenoid valve is de-energized, the pneumatic ball valve 64 is closed, and the cooling water supply is cut off.

[0039] The grinding head assembly 5 consists of two grinding head motors 51, which are respectively installed on both sides of the base 1. The output end of the grinding head motor 51 is fitted with a grinding head axial adjustment component 52, which is connected to the base 1. The grinding head body 53 is installed at the end of the output end of the grinding head motor 51. A grating sensor 54 is also installed on one side of the grinding head assembly 5.

[0040] The grinding head assembly 5 consists of two grinding head motors 51. The two grinding head motors 51 are respectively installed on both sides of the machine base 1. Motor mounting seats are respectively provided on both sides of the machine base 1. The motor mounting seats are fixedly connected to the machine base 1 by bolts. The grinding head motors 51 are fixedly connected to the motor mounting seats by flanges. The output shafts of the two grinding head motors 51 are arranged opposite each other, and the axes are located in the same horizontal plane. The output end of the grinding head motor 51 is fitted with a grinding head axial adjustment assembly 52. ​​The grinding head axial adjustment assembly 52 is connected to the machine base 1. The grinding head axial adjustment assembly 52 consists of an adjustment handle, a lead screw and nut mechanism, and a locking device. The adjustment handle is installed at the rear end of the grinding head motor 51 and is fixedly connected to the lead screw. When the adjustment handle is rotated, the lead screw rotates and drives the nut seat to move axially. The nut seat is fixedly connected to the mounting plate of the grinding head motor 51, thereby causing the entire grinding head motor 51 to move axially. The locking device adopts a clamping structure. When the grinding head is adjusted to the correct position, the locking device clamps the mounting plate of the grinding head motor 51 by tightening the locking handle to prevent the grinding head position from shifting due to vibration during the grinding process. A grinding head body 53 is installed at the end of the output end of the grinding head motor 51. The grinding head body 53 is an annular grinding wheel, which is connected to the output shaft of the grinding head motor 51 through a flange. The grinding head body 53 and the connecting plate adopt an transition fit and transmit torque through a keyway. The connecting plate and the output shaft of the grinding head motor 51 are connected by threads or keys and fixed with lock nuts, which facilitates the replacement of the grinding head body 53. A grating sensor 54 is also installed on one side of the grinding head assembly 5. The grating sensor 54 consists of a grating ruler and a reading head. The grating ruler is fixedly installed on the mounting plate of the grinding head motor 51, and the reading head is fixedly installed on the motor mounting base. When the grinding head motor 51 moves axially, the grating ruler moves with the grinding head motor 51. The reading head reads the scale on the grating ruler and converts the displacement signal into a digital signal, which is transmitted to a digital display or programmable logic controller. The operator can intuitively read the current axial position of the grinding head through the digital display and realize the precise adjustment of the grinding opening width. The two grinding head motors 51 are each controlled by an independent frequency converter. The frequency converter adjusts the power supply frequency of the grinding head motors 51, thereby changing the rotation speed of the grinding head body 53. This allows the grinding speed to be adjusted according to the material and grinding requirements. The spindle of the grinding head motor 51 adopts a special structural design, and the internal bearing is a high-precision angular contact ball bearing. The bearing is pre-lubricated during assembly and does not require additional lubrication during use. The bearing configuration can withstand the axial and radial forces generated during grinding, ensuring grinding accuracy.

[0041] Thickness measurement method for double-end grinders S1: Preset thickness parameters. Set the standard thickness value and allowable deviation range of the magnetic tile to be processed through the touch screen of the electronic control system, and set the detection threshold of the feed detection component 8 and the output detection assembly 9 respectively. S2: Feeding pre-inspection. When the magnetic tile to be processed is conveyed to the feeding guide rail by the feeding component 2, the feeding detection end 82 of the feeding detection component 8 performs non-contact pre-inspection of the thickness of the magnetic tile, obtains the thickness pre-inspection value, and transmits the pre-inspection value to the PLC control system. S3: Thickness comparison and feedback. The PLC control system compares the pre-detected thickness value with the preset thickness standard value. If it exceeds the allowable deviation range, the control system issues an alarm signal and stops feeding. If it is within the allowable deviation range, the magnetic tile is allowed to continue entering the grinding area. S4: Thickness monitoring during grinding process. During the grinding process of the grinding head assembly 5 on both sides of the magnetic tile end face, the laser sensor 942 in the discharge detection assembly 9 is kept in the ready-to-trigger state, and the detection area of ​​the laser sensor 942 is periodically or continuously cleaned by the pneumatic cleaning assembly 95 to prevent dust accumulation from affecting the detection accuracy. S5: Final inspection of the material output. After the magnetic tile is ground, it enters the area of ​​the material output inspection component 94 after being aligned by the auxiliary alignment component 93. Two symmetrically arranged laser sensors 942 simultaneously perform final inspection of the thickness of the magnetic tile, obtain the final thickness inspection value, and transmit the final inspection value to the PLC control system. S6: Detection result processing. The PLC control system compares the final thickness detection value with the preset thickness standard value. If it meets the standard, the magnetic tile is sent out by the pusher assembly 3. If it does not meet the standard, the control system records the magnetic tile information and sends a sorting signal. At the same time, it automatically adjusts the grinding parameters of the grinding head assembly 5 according to the deviation value to achieve closed-loop control.

[0042] Working principle: Before starting the equipment, the operator rotates the screw nut mechanism by adjusting the handle in the grinding head axial adjustment assembly 52 according to the specifications of the material to be processed, which drives the grinding head motors 51 on both sides to move axially. The moving distance is displayed in real time by the grating sensor 54, so as to achieve precise adjustment of the grinding opening width. At the same time, the width of the feed guide plate 81 and the discharge guide plate 91 is adjusted by the elongated hole structure at the bottom, so that the transmission channel formed by the feed guide rail group 71, the intermediate guide rail group 72 and the discharge guide rail group 73 is adapted to the width of the material. The height adjustment handle 43 in the pressing tile assembly 4 is adjusted so that the pressing tile shaft 44 drives the pressing tile 45 to a suitable height.

[0043] During operation, the operator places the material sequentially on the feeding guide rail group 71, the feeding component 2 starts to operate, the feeding electric cylinder 22 receives the instruction from the programmable logic controller, and its push rod drives the tile-moving slide 24 to move in a straight line along the tile-moving guide rail 23 through the floating joint. The tile-moving block 25 fixed at the bottom of the tile-moving slide 24 contacts the end face of the material, pushing the material along the feeding guide rail group 71 towards the grinding area. Before the material enters the grinding area, it first passes through the feed detection component 8, which is fixed inside the feed detection end 82 on both sides of the feed guide rail assembly 71. Two symmetrically arranged ultrasonic sensors 84 are set opposite each other, and the detection axes intersect in the center area of ​​the material thickness. The ultrasonic sensors 84 emit ultrasonic beams to irradiate the two sides of the material in a non-contact manner. The actual thickness of the material is calculated based on the echo time difference. The detection signal is transmitted to the programmable logic controller via the signal line at the tail of the sensor mounting plate 85. The programmable logic controller compares the pre-detection value with the preset threshold. If it exceeds the allowable range, the system issues an alarm or automatically adjusts the subsequent feeding rhythm. As the material continues to advance into the grinding area, the pressing tile assembly 4 begins to work. The pressing tile cylinder 42 is controlled by a solenoid valve, and compressed air is introduced into its rodless chamber. The piston rod extends downward, driving the pressing tile shaft 44 and the pressing tile plate 45 fixed at the bottom to press down to a certain distance above the material, preventing the material from jumping or shifting due to the grinding force during the grinding process. At the same time, the pneumatic ball valve 64 of the water circuit assembly 6 is opened by a solenoid valve, and external cooling water enters the water circuit main pipe 61 through the water circuit connection pipe 62. After flowing through the pneumatic ball valve 64, it is sprayed from the flushing head 63 to the contact area between the grinding head assembly 5 and the material, providing cooling and flushing the grinding debris. The grinding head assemblies 5 on both sides start grinding synchronously. The two grinding head motors 51 are controlled by independent frequency converters. The power supply frequency is adjusted according to the material to change the speed of the grinding head body 53. The output shaft of the grinding head motor 51 drives the grinding head body 53 connected by the flange and keyway to rotate at high speed. The grinding head body 53 adopts a ring grinding wheel to grind the two end faces of the material synchronously. During the grinding process, the high-precision angular contact ball bearing inside the grinding head motor 51 bears the axial and radial loads to ensure the rigidity of the spindle and the grinding accuracy. After grinding is completed, the feeding assembly 3 starts to move. The feeding electric cylinder 32 drives its push rod to drive the pusher slide block 34 to move in a straight line along the pusher guide rail 33 through the floating joint. The pusher block 35 installed at the bottom of the pusher slide block 34 contacts the end face of the material and pushes the material from the grinding area to the discharge guide rail group 73. Next, the material passes through the side cleaning assembly 92. The blade mounting head 922, which is hinged to one side of the inner groove mounting box 921 by a pin, always tends to move towards the inner groove mounting box 921 under the constant pressure of the first nitrogen spring 924. This causes the inclined cleaning blade 923 fixed at the end of the blade mounting head 922 to adhere to the side of the material with a constant contact pressure. As the material moves, the cutting edge of the cleaning blade 923 scrapes off the burrs and debris attached to the side. The scraped dirt falls into the through groove set inside the inner groove mounting box 921 under the action of gravity and slides down the through groove to the chip collection box outside the equipment. The dustproof bellows 925 between the blade mounting head 922 and the inner groove mounting box 921 swings and extends to prevent debris from entering the hinge and spring moving parts. Then, after the material enters the discharge guide rail group 73, it first passes through the pneumatic cleaning component 95. The compressed air output by the air pump 96 is delivered to the air knife precision regulating valve 953 through the air knife main pipe 954. After adjusting the pressure and flow rate, it enters the air knife branch pipe 952 and is then distributed to two symmetrically arranged air knife bodies 951. The narrow airflow channel inside the air knife body 951 makes the compressed air form a high-speed and uniform airflow curtain at the continuous straight gap of the air outlet. It impacts the upper surface and sides of the material at a certain angle, blowing away the coolant residue and fine debris attached during the grinding process, thus achieving surface drying and cleaning. Subsequently, the material passes through two parallel auxiliary centering components 93. Inside the centering guide box 931, a centering guide frame 933, which is configured with a linear guide rail and a slider, is brought closer together by the constant pressure thrust of four rectangularly arranged second nitrogen springs 932. The outer circumference of the rotating roller 934, which is rotatably mounted inside the centering guide frame 933, protrudes from the side of the centering guide box 931 facing the material. As the material moves, the two rotating rollers 934 are pressed together with a certain pressure. On the side of the material, the material drives the rotating roller 934 to rotate, converting sliding friction into rolling friction. At the same time, the compressed air output by the air pump 96 enters the air inlet connecting pipe 936 after being regulated by the air inlet main pipe 938 and the air inlet precision regulating valve 937. It is then distributed to the duck-type nozzle 935 installed inside the centering guide box 931. The air outlet of the duck-type nozzle 935 has a flat fan-shaped structure, which sprays airflow toward the contact area between the rotating roller 934 and the side of the material to blow away the small debris in this area and prevent the debris from embedding and causing scratches or centering deviation. Finally, the material passes through the discharge detection component 94. Two laser sensors 942 are symmetrically installed on the two side walls of the detection chamber inside the discharge detection box 941. The emitting ends of the two laser sensors 942 are set opposite each other so that the laser beams converge in the center area of ​​the material thickness. The laser sensors 942 obtain working power through the power supply terminal 943 and emit laser beams to irradiate the two sides of the material. The position of the material side surface is measured according to the laser beam flight time or triangulation principle. The detection signal is transmitted to the analog input module of the programmable logic controller through the signal connection terminal 944 via the shielded cable. The programmable logic controller calculates the actual thickness of the material based on the measurement values ​​of the two laser sensors 942 and the fixed distance between the two sensors. The detection process is carried out continuously during the material's movement, realizing online thickness detection of each piece of discharged material. The inclined anti-fouling plate 945 set on the side of the discharge detection box 941 faces the cleaning component to prevent splashed dirt from contaminating the detection window of the laser sensor 942. Throughout the entire workflow, the detection signals acquired by the ultrasonic sensor 84 of the infeed detection component 8 and the laser sensor 942 of the outfeed detection component 94 are fed back to the CNC system in real time. When the infeed pre-detection value exceeds the set range, the system automatically adjusts the pushing rhythm of the feeding electric cylinder 22 or issues an audible and visual alarm. When the outfeed final inspection value is unqualified, the system marks the defective product or issues a rejection command. By integrating the infeed pre-detection and outfeed final inspection on both sides of the guide rail component, a complete closed-loop quality control is formed to ensure that all outfeed materials meet the processing accuracy requirements.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CNC double-end face composite grinding machine with thickness detection function, comprising a machine base (1) for support, wherein a guide rail assembly (7) is provided inside the machine base (1) for material transmission, and a feeding assembly (2) and a pushing assembly (3) are respectively provided at the top of both ends of the guide rail assembly (7) on the machine base (1), wherein the feeding assembly (2) is used for material feeding and the pushing assembly (3) is used for material feeding out; grinding head assemblies (5) are also provided on both sides of the machine base (1), wherein the grinding head assemblies (5) are used for grinding the two sides of the material, characterized in that ； The guide rail assembly (7) is composed of a feeding guide rail group (71), an intermediate guide rail group (72), and a discharging guide rail group (73) connected in sequence. The feeding guide rail group (71) is fixedly connected to the feeding end of the machine base (1), the discharging guide rail group (73) is fixedly connected to the discharging end of the machine base (1), and the intermediate guide rail group (72) is connected to one end of both the feeding guide rail group (71) and the discharging guide rail group (73). Both sides of the feeding guide rail assembly (71) are fixedly connected to the feeding detection component (8), which is used to pre-detect the feeding size of the material. Both sides of the discharge guide rail assembly (73) are fixedly connected to the discharge detection assembly (9), which is used for cleaning the material during discharge and detecting the material discharge.

2. The CNC double-end face composite grinding machine with thickness detection function according to claim 1, characterized in that, The feed detection assembly (8) consists of a feed guide plate (81), a feed detection end (82), and at least two ultrasonic sensors (84). The feed guide plate (81) is adjustablely and fixedly connected to the top of the feed guide rail assembly (71). The feed detection end (82) is fixedly connected to the top of the feed guide plate (81). At least two ultrasonic sensors (84) are symmetrically arranged and installed inside the feed detection end (82). A sensor mounting plate (85) is provided at the end of the ultrasonic sensor (84). The discharge detection assembly (9) consists of a discharge guide plate (91), a side cleaning assembly (92), two auxiliary centering assemblies (93), a discharge detection assembly (94), a pneumatic cleaning assembly (95), and an air pump (96); The air pump (96) is installed on one side of the base (1), the discharge guide plate (91) is adjustablely fixedly connected to the top of the discharge guide rail assembly (73), and the side cleaning assembly (92), the auxiliary centering assembly (93), the discharge detection assembly (94) and the pneumatic cleaning assembly (95) are sequentially installed on the top of the discharge guide plate (91).

3. A CNC double-end face composite grinding machine with thickness detection function according to claim 2, characterized in that, The side cleaning assembly (92) consists of an inner groove mounting box (921) and a blade mounting head (922). The inner groove mounting box (921) is fixedly connected to the top of the discharge guide plate (91). The blade mounting head (922) is movably hinged to one side of the inner groove mounting box (921). The end of the blade mounting head (922) is fixedly connected to a cleaning blade (923) by screws. The cleaning blade (923) is inclined and extends out of the interior of the inner groove mounting box (921). At least two symmetrically arranged first nitrogen springs (924) are movably hinged between the blade mounting head (922) and the inner groove mounting box (921). A dustproof bellows plate (925) is also fixedly connected between the blade mounting head (922) and the inner groove mounting box (921). A through groove is provided inside the inner groove mounting box (921) for conveying out the dirt after cleaning.

4. A CNC double-end face composite grinding machine with thickness detection function according to claim 2, characterized in that, Two auxiliary centering components (93) are arranged side by side. Each auxiliary centering component (93) consists of a centering guide box (931) and a centering guide frame (933). The centering guide box (931) is fixedly connected to the top of the discharge guide plate (91). The centering guide frame (933) is slidably arranged inside the centering guide box (931). At least four symmetrically arranged second nitrogen springs (932) are hinged together between the centering guide frame (933) and the centering guide box (931). Several equally spaced rotating rollers (934) are rotatably installed inside the centering guide frame (933). The rotating rollers (934) extend out of the centering guide box (931). At least one duckbill nozzle (935) is installed inside the centering guide box (931). Two symmetrically arranged duckbill nozzles (935) located on the two discharge guide plates (91) are connected to an air inlet connection pipe (936). An air inlet precision regulating valve (937) is installed on the air inlet precision regulating valve (937). An air inlet main pipe (938) is installed at the input end of the air inlet precision regulating valve (937). The air inlet main pipe (938) is connected to the output end of the air pump (96).

5. A CNC double-end face composite grinding machine with thickness detection function according to claim 2, characterized in that, The pneumatic cleaning assembly (95) consists of an air knife body (951). The air knife body (951) is installed on the top of the discharge guide plate (91) and located on one side of the side cleaning assembly (92). Two air knife bodies (951) arranged symmetrically on the two discharge guide plates (91) are connected to an air knife branch pipe (952). An air knife precision regulating valve (953) is installed on the air knife branch pipe (952). An air knife main pipe (954) is installed at the input end of the air knife precision regulating valve (953). The air knife main pipe (954) is connected to the output end of the air pump (96).

6. A CNC double-end face composite grinding machine with thickness detection function according to claim 2, characterized in that, The discharge detection component (94) consists of a discharge detection box (941) and at least two laser sensors (942). The discharge detection box (941) is installed on top of the discharge guide plate (91) and on the other side of the cleaning component. The two laser sensors (942) are symmetrically arranged and installed inside the discharge detection box (941). An inclined anti-fouling plate (945) is also provided on the side of the discharge detection box (941) connected to the cleaning component. The laser sensor (942) has a power supply terminal (943) installed at its end and a signal connection terminal (944) installed at its top.

7. A CNC double-end face composite grinding machine with thickness detection function according to claim 1, characterized in that, The feeding assembly (2) consists of a feeding tile-shifting mounting bracket (21) and a feeding electric cylinder (22). The feeding tile-shifting mounting bracket (21) is fixedly connected to one side of the machine base (1) and is located on the top of the feeding guide rail assembly (71). The feeding electric cylinder (22) is installed on one side of the feeding tile-shifting mounting bracket (21). A tile-shifting guide rail (23) is fixedly connected to the top of the feeding tile-shifting mounting bracket (21). A tile-shifting slide plate (24) is movably mounted on the tile-shifting guide rail (23). The tile-shifting slide plate (24) is connected to the output end of the feeding electric cylinder (22). A tile-shifting block (25) is fixedly connected to the bottom of the tile-shifting slide plate (24). The pushing assembly (3) consists of a pushing tile mounting bracket (31) and a pushing electric cylinder (32). The pushing tile mounting bracket (31) is fixedly connected to the other side of the machine base (1) and is located on the top of the discharge guide rail group (73). The pushing electric cylinder (32) is installed on one side of the pushing tile mounting bracket (31). A pushing tile guide rail (33) is fixedly connected to one side of the pushing tile mounting bracket (31). A pushing tile slider (34) is movably sleeved on the outer circumferential surface of the pushing tile guide rail (33). The pushing tile slider (34) is connected to the output end of the pushing electric cylinder (32). A pushing tile block (35) is installed at the bottom of the pushing tile slider (34).

8. A CNC double-end face composite grinding machine with thickness detection function according to claim 1, characterized in that, The base (1) is also provided with a pressure tile assembly (4) and a water channel assembly (6) that runs through its top. The tile pressing assembly (4) consists of a tile pressing mounting bracket (41) and a tile pressing cylinder (42). The tile pressing mounting bracket (41) is fixedly connected to the top of the machine base (1). The tile pressing cylinder (42) is installed on the top of the tile pressing mounting bracket (41). A tile pressing shaft (44) is installed at the output end of the tile pressing cylinder (42). A height adjustment handle (43) is sleeved on the outer circumferential surface of the tile pressing shaft (44). A tile pressing sheet (45) is fixedly connected to the bottom of the tile pressing shaft (44). The water circuit assembly (6) consists of a water circuit main pipe (61), which passes through the top of the base (1) and is connected to the top of the base (1). Water circuit connecting pipe (62) and flushing head (63) are respectively installed at both ends of the water circuit main pipe (61). A pneumatic ball valve (64) is also installed on the water circuit main pipe (61).

9. A CNC double-end face composite grinding machine with thickness detection function according to claim 1, characterized in that, The grinding head assembly (5) consists of two grinding head motors (51), which are respectively installed on both sides of the base (1). The output end of the grinding head motor (51) is fitted with a grinding head axial adjustment assembly (52), which is connected to the base (1). The end of the output end of the grinding head motor (51) is fitted with a grinding head body (53). A grating sensor (54) is also installed on one side of the grinding head assembly (5).

10. The thickness detection method for a double-end grinder according to any one of claims 1-8, characterized in that, S1: Preset thickness parameters. Set the standard value and allowable deviation range of the thickness of the processed magnetic tile through the touch screen of the electronic control system, and set the detection threshold of the feed detection component (8) and the output detection assembly (9) respectively. S2: Feeding pre-inspection. When the magnetic tile to be processed is conveyed to the feeding guide rail by the feeding assembly (2), the feeding detection end (82) of the feeding detection assembly (8) performs non-contact pre-inspection on the thickness of the magnetic tile, obtains the thickness pre-inspection value, and transmits the pre-inspection value to the PLC control system. S3: Thickness comparison and feedback. The PLC control system compares the pre-detected thickness value with the preset thickness standard value. If it exceeds the allowable deviation range, the control system issues an alarm signal and stops feeding. If it is within the allowable deviation range, the magnetic tile is allowed to continue entering the grinding area. S4: Thickness monitoring during grinding. During the grinding process of the grinding head assembly (5) on both sides of the magnetic tile, the laser sensor (942) in the discharge detection assembly (9) is kept in a ready-to-trigger state. The detection area of ​​the laser sensor (942) is periodically or continuously purged by the pneumatic cleaning assembly (95) to prevent dust accumulation from affecting the detection accuracy. S5: Final inspection of material output. After grinding, the magnetic tile is aligned by the auxiliary alignment component (93) and then enters the area of ​​the material output inspection component (94). Two symmetrically arranged laser sensors (942) simultaneously perform final inspection of the thickness of the magnetic tile, obtain the final thickness inspection value, and transmit the final inspection value to the PLC control system. S6: Detection result processing. The PLC control system compares the final thickness detection value with the preset thickness standard value. If it meets the standard, the magnetic tile is sent out by the pusher assembly (3). If it does not meet the standard, the control system records the magnetic tile information and sends a sorting signal. At the same time, it automatically adjusts the grinding parameters of the grinding head assembly (5) according to the deviation value to achieve closed-loop control.

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