42 results about "Sand-paper" patented technology

The invention discloses a flexible piezoresistive sensor and a preparation method and application thereof, the flexible piezoresistive sensor comprises an upper layer flexible conductive member, the upper layer flexible conductive member comprises an upper layer flexible substrate and an upper layer conductive layer, one surface of the upper layer flexible substrate is provided with a microstructure formed by sand paper reverse molding, and the upper layer conductive layer is embedded in the surface of the microstructure; the lower-layer flexible conductive member comprises a lower-layer flexible substrate, a lower-layer conductive layer and an elastic conductive layer; the lower-layer flexible substrate is provided with an arc-shaped stripe array microstructure; the elastic conductive layer includes a polymer matrix and a conductive filler dispersed therein. Through the double-gradient design of the gradient conductivity and the gradient structure, the core contradiction that a traditional flexible piezoresistive sensor is difficult to consider high sensitivity and wide linear range at the same time is successfully solved by utilizing the deep coupling and synergistic effect of the conductivity gradient and the structure gradient, and synchronous improvement of the sensitivity and the linear range is realized.

The invention relates to the technical field of grinding path optimization, and discloses an abrasive paper grinding path optimization system based on reinforcement learning. According to the system, a grinding task is decomposed through a task analysis module, and a state space is defined by fusing a current position, a historical track and real-time surface roughness through a state construction module. The strategy learning module utilizes a deep reinforcement learning network to carry out iterative training by exploring actions and collecting reward experience in simulation so as to learn an optimization strategy. And the trained network inferes local optimization paths for the sub-regions, and a global grinding path is formed after splicing and smoothing. According to the method, self-adaptive path planning is achieved through autonomous decision-making of reinforcement learning, closed-loop quality control is formed by means of real-time roughness feedback, and the intelligent level of grinding machining and the consistency of workpiece surface quality are improved.

The utility model relates to the technical field of aluminum alloy profile machining, in particular to an aluminum alloy profile preformed hole machining device which comprises a rack, a moving assembly and a drilling motor and further comprises a polishing assembly. The grinding assembly comprises a mounting seat, a driving component, a lifting seat, a spring, an abutting plate, grinding abrasive paper and a winding component, the lifting seat is driven to descend through the driving component, then the abutting plate and the grinding abrasive paper are driven to descend, and after the abutting plate abuts against the surface of the aluminum profile, the abutting plate abutting against the surface of the aluminum profile shrinks and then retracts into the lifting seat; and the abutting plate located at the aluminum profile groove continues to move and drives the polishing abrasive paper to stretch into the groove so as to abut against the preformed hole in the groove, at the moment, the driving component drives the lifting base to move in a reciprocating mode, then the abutting plate and the polishing abrasive paper are driven to move in a reciprocating mode, and burrs at the aluminum profile preformed hole are polished through the polishing abrasive paper.

An adapter device for a power tool, in particular a multifunctional power tool that is able to be driven in an oscillating manner, has at least one machine interface for connecting to the power tool, in particular to a tool receptacle of the power tool, and at least one tool interface for connecting to a sanding tool, in particular to a sanding sheet. The machine interface have has a connecting plane which encloses an angle other than 0°, 90° and 180° with a connecting plane of the tool interface.

The utility model discloses a pneumatic floating polishing head, which relates to the field of automobile part manufacturing and comprises a fixed plate, a movable seat is slidably connected to one side of the fixed plate, guide columns are symmetrically and fixedly connected to one side, far away from the fixed plate, of the movable seat, sliding blocks B are slidably connected to the outer sides of the guide columns, and springs are sleeved on the outer sides of the guide columns. The sliding block B is elastically connected with the movable seat through a spring, a lifting seat is arranged on one side of the movable seat, the sliding block B is fixedly connected with the lifting seat, and a pneumatic polishing head is installed in the lifting seat. And the pressure is transmitted to the pneumatic polishing head through the lifting seat, so that upward buoyancy generated by rotation of the polishing head is reduced, the abrasive paper can be more uniformly attached to the surface of the workpiece, and the uniformity and smoothness of the polishing effect are ensured.

The application provides an electrolytic polishing method for a zirconium alloy and stainless steel welded joint EBSD sample, which comprises the following steps: (1) cutting a zirconium alloy and stainless steel welded joint sample to be detected; (2) mechanically polishing the cross section of the welded joint by using sandpaper; (3) preparing an electrolytic polishing solution; (4) placing the polished sample in step (2) into the electrolytic polishing solution in step (3) to perform electrolytic polishing treatment; (5) placing the sample after electrolytic polishing in step (4) into a container containing alcohol, ultrasonic cleaning the container containing the sample for 5 min, and then taking out the sample and blowing cold air by using a hair dryer until no water stains are left, so that the EBSD sample with a smooth and bright surface is obtained. By adjusting the proportion of the electrolytic polishing solution and optimizing the electrolytic polishing process, the polishing and stress layer removal of the cross section of the zirconium alloy and stainless steel welded joint sample are realized, and the EBSD sample detection calibration rate is high.

This invention discloses a surface grinding device for motor stator cores, belonging to the field of motor stator core grinding technology. It includes a rotary drive component for driving the stator core to rotate, and a surface treatment structure on the rotary drive component. The surface treatment structure includes a grinding assembly and a power component for driving the grinding assembly to rotate. The grinding assembly includes several execution units. During the grinding process of the motor stator core sidewall surface, the insulating coolant filled in the base box mechanism of the execution unit cools the grinding area. This not only effectively extends the service life of the sandpaper assembly in the grinding device but also effectively suppresses irregular thermal expansion of the stator core during grinding, preventing excessive tool feed and ensuring the grinding accuracy of the motor stator core, thus improving the production yield of motor core products.

This invention discloses a rapid edge-grinding device for producing environmentally friendly bamboo cutting boards, belonging to the field of bamboo cutting board production technology. It includes a housing with open ends. The bottom of the housing has a mounting groove along its width. Grinding mechanisms are slidably mounted on both sides of the mounting groove. The mounting groove also includes a spacing adjustment mechanism that adjusts the distance between the two grinding mechanisms according to the thickness of the bamboo cutting board. This invention utilizes a grinding mechanism consisting of a U-shaped plate, a lower conveyor roller, a conveyor motor, an upper conveyor roller, a tension roller, and sandpaper symmetrically arranged on both sides of the mounting groove. Combined with a contact mechanism that adjusts the contact area between the sandpaper and the bamboo cutting board according to its thickness, and a spacing adjustment mechanism that adjusts the distance between the two grinding mechanisms according to the width of the bamboo cutting board, this allows the bamboo cutting board to be automatically edge-ground on its symmetrical sides after passing through the housing, eliminating the need for manual adjustment, thus improving practicality and grinding speed.

The utility model discloses an ambient air monitoring device. The environment air monitoring equipment comprises a vertical rod, a foundation is installed at the lower end of the vertical rod, and a display screen is installed on one side of the vertical rod; the vertical rod comprises a first rod body and a second rod body, and a connecting rod is arranged between the first rod body and the second rod body; the foundation comprises a bottom plate fixedly installed at the lower end of the vertical rod. The display screen comprises a display assembly and a frame used for fixing the display assembly. And the frame is rotationally mounted on the connecting rod. According to the environment air monitoring equipment, in strong wind weather, wind blows on the surface of the display screen to generate large thrust on the display screen, the display screen rotates under the action of wind power until the display screen is consistent with the wind direction, the stress on the two sides of the display screen is balanced and keeps consistent with the wind direction, and meanwhile, the display screen is not damaged. The possibility that abrasive paper doped in strong wind impacts on the display screen is smaller, and therefore damage to the display screen is reduced.

The invention relates to the technical field of adhesive synthesis, in particular to polyurethane composite adhesive for waterproof abrasive paper and a preparation method of the polyurethane composite adhesive. Wherein the main agent comprises macromolecular phthalic anhydride type polyester polyol, micromolecular phthalic anhydride type polyester polyol, a chain extender, diisocyanate, ethyl acetate (EAC) and dimethyl carbonate (DMC), and the phthalic anhydride type polyester polyol is selected to synthesize polyurethane, so that the heat resistance and the wear resistance of the product can be remarkably improved; meanwhile, phthalic anhydride type polyester polyols with different molecular weights are selected for compounding, so that the cost is properly reduced, and the brightness of a final product can be adjusted; according to the preparation method provided by the invention, the main agent is used for preparing the solvent-type OH-terminated polyurethane adhesive through a-NCO insufficient method, the polyurethane composite adhesive with high hardness, good wear resistance, good flexibility and high curing speed is formed through the cross-linking reaction of the main agent and the curing agent, and the preparation method is simple in technological process and easy to prepare.

The application provides an instrument shell processing deburring device and relates to the field of instrument shell processing. The instrument shell processing deburring device comprises an operation table, a polishing disc is installed on the top of the operation table, a through hole is formed in the middle of the polishing disc, a main shaft is rotatably connected to the middle of the operation table, the top end of the main shaft penetrates through the through hole in the middle of the polishing disc and is installed with a rotating disc, a pair of curve grooves which are symmetrical about the center point of the rotating disc are formed in the inside of the rotating disc, and the inner end notches of the curve grooves respectively extend towards the direction of the center point of the rotating disc. The instrument shell is pushed to move on the polishing sand paper through the curve grooves to realize polishing and deburring. Finally, the instrument shell is squeezed and pushed to the inner end notches in the form of "embracing" by the curve grooves to realize automatic discharging. Since the movement distance of each instrument shell is nearly consistent, the polishing and deburring degree can be uniformly good, and product control is facilitated.

The utility model provides a cutting device for abrasive paper processing, and relates to the technical field of cutting devices, the cutting device comprises an operation table, the outer surface wall of the operation table is fixedly connected with a fixing frame, and the inner surface wall of the fixing frame is provided with four first sliding grooves. According to the automatic abrasive paper feeding device, under the interaction of all the components of the device, the automatic abrasive paper feeding function is achieved, the problems of unstable feeding speed, large position deviation and the like caused by traditional manual conveying are effectively avoided, the cutting size precision is ensured, the product quality is remarkably improved, meanwhile, manual operation is reduced, and the production efficiency is improved. The problem that manual operation is low in efficiency is solved, the large-scale and high-efficiency production requirement is met, in addition, the two conveying belts can be promoted to rotate synchronously only through one power source, the transmission structure is greatly simplified, the equipment cost and energy consumption are reduced, the conveying requirements of abrasive paper with different thicknesses can be met by adjusting the positions of the two conveying belts, and the production efficiency is improved. And the application range of the equipment is widened.

The utility model discloses a transmission drum of a belt conveyor. The transmission drum comprises a drum body, according to the transmission drum of the belt conveyor, through cooperative use of the processing mechanism, in the use process of the drum, a rotating handle is rotated to drive a threaded rod to rotate, and then the threaded rod is meshed with a frame plate to drive a connecting plate to move, so that a cleaning material is in contact with a rubber surface; in the process that the roller body rotates to drive the rubber face to rotate, the cleaning material brushes impurities attached to the outer wall of the rubber face, the cleanliness of the surface of the rubber face is improved, meanwhile, the cleaning material can be torn and pulled to drive the mother face hook-and-loop fastener and the son face hook-and-loop fastener on the back face of the cleaning material to be separated, the cleaning material is detached, and the cleaning efficiency is improved. When the roller is used, the roller can be replaced by fine abrasive paper, the rubber surface is slightly polished, the anti-skid performance of the roller is improved, the adhesive force between the roller body and the conveying belt is increased, the conveying effect on objects is indirectly improved, and then the practicability of the roller is improved to a certain degree.

In a sander, the compactness of the motor shaft in the extending direction is improved. [Solution] The sander comprises a pad, a motor, a main housing, a terminal assembly, and a support housing. The pad has a mounting surface for attaching sanding paper and is configured to move in an eccentric circular motion. The motor has a motor shaft extending perpendicular to the mounting surface and is configured to provide driving force to the pad. The main housing is located above the pad and houses the motor. The terminal assembly has a terminal block and terminals supported on the terminal block so as to be partially exposed to the outside and electrically connectable to a battery. The terminals extend upward from the terminal block. The support housing protrudes outward from the main housing in a direction perpendicular to the vertical direction and supports the terminal assembly.

The utility model relates to the field of optical device packaging, especially a small -size grinding system for optical device rework. Including two axis displacement platform, rotating motor system, optical device clamping fixture and switching power supply connected in the grinding platform base, one -way slide is fixed on two axis displacement platform, the optical device clamping fixture is fixed on one -way slide, the optical device clamping fixture clamps the optical device to be ground, the switching power supply connects rotating motor system, rotating motor system is connected on the grinding platform base, the rotating motor system is fixed grinding sand paper, the opposite of grinding sand paper is optical device clamping fixture. The utility model discloses small -size grinding system passes through strict design and assembly, guarantees the smoothness of grinding surface, and the operation is simple, and the compatibility is strong, satisfies the rework requirement of advanced high requirement optical device, adapts to the rework grinding of multiple size optical device, guarantees the quality of product while guaranteeing the smooth progress of rework.

The utility model discloses a button cell steel sheet stamping mechanism, a collecting mechanism further comprises a supporting table, a plurality of mounting grooves are formed in the surface of the supporting table, the mounting grooves are arranged at equal intervals in the length direction of the supporting table, and supporting grooves are formed in the inner wall of the supporting table and located on the two sides of each mounting groove. A mounting cylinder is inserted into each mounting groove, the middle of the inner wall of each mounting cylinder is hollowed out, sponge abrasive paper is embedded and fixed to the position, located at the lower end of the hollowed-out position, of each mounting cylinder, the whole sponge abrasive paper is annular, and rotating shafts are rotationally connected to the two sides of the lower end of each mounting groove correspondingly; one side of the top end of each rotating shaft is fixedly connected with a supporting block, the interiors of the supporting grooves are movably connected with the rotating shafts and the supporting blocks, the top shaft pushes the formed steel sheet downwards into the mounting cylinder, and when the steel sheet moves downwards along the inner wall of the mounting cylinder, burrs on the side edge of the steel sheet are polished by sponge abrasive paper; and the machining steps of subsequent treatment of the steel sheet are reduced.

The utility model discloses an abrasive paper gluing device convenient to recycle redundant glue, which comprises a working table, a gluing mechanism is arranged at the top of the working table, a recycling mechanism is arranged at the top of the working table, and the recycling mechanism comprises a recycling assembly, a driving assembly and a driving assembly, the top end of the supporting rod is fixedly connected with a recycling plate, and the top of the recycling plate is fixedly connected with a glue uniformizing plate. According to the abrasive paper gluing device capable of conveniently recycling the redundant glue, through the ingenious design of the recycling mechanism, the redundant glue can be rapidly collected by the glue uniformizing plate and flows into the collecting box through the recycling plate and the recycling pipe, the purity of the recycled glue is effectively guaranteed through the filtering plate, the collecting box is convenient to mount and dismount through the arrangement of the folding pipe, and the whole recycling process is efficient, convenient and fast; the glue waste is greatly reduced, the production cost is reduced, and the working environment is kept clean.

The invention discloses an automatic metallographic grinding machine, and relates to the technical field of metallographic sample grinding, the automatic metallographic grinding machine comprises a grinding machine body, a sample clamping arm and a clamping arm column, two-way motors I are arranged on the two sides of the interior of the grinding machine body, and grinding discs are fixedly connected to output shafts of the upper ends and the lower ends of the two-way motors I; the two first bidirectional motors are fixedly connected through a connecting shaft in a threaded mode, and transverse rods are fixedly connected to the opposite faces of the two first bidirectional motors. By adopting the mode that the four grinding discs are alternately replaced every two times and utilizing cooperation between rotation and positioning, the grinding discs are rotated and replaced, abrasive paper replacement and cleaning operation before replacement are omitted, the optionality of different grinding degrees in single equipment is further improved, the grinding duration caused by repeatedly adjusting the grinding degrees is shortened, and the grinding efficiency is improved. And on the basis that the size of original equipment is not increased, selection and use of more grinding precision are achieved.

The invention relates to an efficient polishing method for a mobile phone middle frame and an extension protection technology thereof, and belongs to the technical field of mobile phone manufacturing and metal surface treatment. The method is achieved based on a five-axis linkage polishing device, a mobile phone middle frame sample piece is installed on a special jig and fixed to a C axis through a bolt, polishing abrasive paper is pasted to a polishing disc, and the polishing disc is driven by a servo motor. In the machining process, the polishing wheel and the sample piece rotate around the axes respectively, and the surface treating agent is sprayed to the attached position of the polishing abrasive paper and the to-be-polished product through the nozzle. The method comprises the steps of pretreatment, rough polishing, sand blasting and aftertreatment. Experimental data show that after the method is adopted, the surface roughness of the mobile phone middle frame is remarkably reduced, the polishing efficiency and uniformity are remarkably improved, and the overall yield is improved by about 12%. By optimizing the proportion of grinding materials and improving the structural design of the polishing equipment, the stability and consistency of the polishing process are ensured, and the high-efficiency and high-quality production requirements of the modern mobile phone manufacturing industry are met.

The utility model provides a sand paper cutting device belongs to mechanical technical field, a sand paper cutting device, include: first main body, first main body has first connecting portion and installation portion, second main body, second main body is crossed with first main body through pin shaft and is connected, second main body has second connecting portion and support bottom, and installation portion corresponds with support bottom, and the cutting hole is set up on support bottom, first connecting portion corresponds with second connecting portion, and the adjusting assembly is arranged between first connecting portion and second connecting portion, and the adjusting assembly is used for adjusting the distance between installation portion and support bottom, handle, handle is connected on second connecting portion, cutting wheel, cutting wheel rotation sets up on installation portion, and cutting wheel can locally extend into cutting hole. The utility model has the advantages of convenient sand paper cutting.

The invention belongs to the technical field of silica gel molds, and particularly relates to a silica gel mold assembly which comprises a lower mold, an upper mold and polishing units, the polishing units are arranged in the upper mold and symmetrically distributed with the center line of the upper mold as the reference line, and the control assembly is arranged in the polishing units and used for controlling the polishing units to rotate. The polishing assembly is arranged in the control assembly and comprises a second telescopic rod and a driving device, and the stabilizing rod is rotationally connected to the lower portion of the driving device; when the distance sensor detects that the stabilizer bar is about to approach the silica gel product, the driving speed of the electric sliding rail is reduced under the control of the mold equipment system, so that the moving speed of the control assembly is reduced, and the stabilizer bar is prevented from being in contact with a parting line of the silica gel product at an over-high speed to cause braking delay of the electric sliding rail; and the abrasive paper on the stabilizer bar is easy to excessively polish a certain position on the silica gel product.

The utility model discloses a protective type heat exchanger shell polishing device, and relates to the field of polishing devices, the protective type heat exchanger shell polishing device comprises a base, the upper surface of the base is fixedly connected with a supporting plate, the inner wall of the supporting plate is rotatably connected with an electric driving shaft, and the surface of the electric driving shaft is fixedly connected with a positioning cylinder; and the inner wall of the positioning cylinder is slidably connected with an extruding and grinding mechanism. According to the polishing device, the lead screw is rotated, the sliding block is pushed to slide in the guide cylinder, and then the position of the contact shaft is adjusted, so that the contact shaft extrudes the surface of polishing abrasive paper, one side of the polishing abrasive paper makes contact with the surface of a shell, polishing stability is ensured, and in the polishing process, the driven wheel drives the winding shaft to rotate, and the polishing abrasive paper is conveyed and wound; and the grinding abrasive paper is continuously conveyed, when the shell is clamped, the multiple pairs of first anti-skid sleeves and second anti-skid sleeves rub and extrude the surface of an object by rotating the screw rod, and clamping stability is kept.

The utility model provides a sanding machine for elastic floor production, including first sanding unit, second sanding unit and be equipped with between the pressure material roll subassembly, cleaning roller subassembly and negative pressure component, negative pressure component includes dust absorption pipe and centrifugal fan, dust absorption pipe lower part structure is the square pipe of length adaptation board width, its suction inlet extends to between first sanding unit and pressure material roll subassembly and is located above the surface of board to be sanded, and its suction outlet is connected with centrifugal fan, cleaning roller subassembly includes cleaning roller and connecting shaft, and cleaning roller is rotatively connected at suction inlet through connecting shaft and its length is adapted with the length of suction inlet, and the surface of cleaning roller is equipped with bristle layer, and bristle layer is tangent to the surface of board and the surface of abrasive belt of first sanding unit simultaneously. The sanding machine of the utility model can clean abrasive belt and board surface impurity simultaneously, improve sanding uniformity and reduce energy consumption, realize the double removal and directional collection of impurity in sanding process.

The invention provides an internal combustion engine piston finish machining device, and relates to the technical field of internal combustion engine piston machining. Through connecting holes are evenly formed in the edge of the workbench. A fixing groove is formed in the left end of the workbench. The two hydraulic cylinders are used for oppositely pushing the clamping plates, the inner concave faces of the clamping plates are used for further temporarily fixing and clamping the side walls of the two ends of the piston, displacement of the piston during machining and grinding can be effectively avoided, and therefore convenience is provided for a fine sand plate or a fine sand paper plate to accurately and stably grind the annular side walls and the top plane of the piston; according to the piston grinding device, the convenience of grinding operation is improved, the dimensional precision and the surface flatness of a piston after grinding are guaranteed, and the problems that the piston needs to be stably clamped due to the fact that the annular side wall and the top plane of the piston need to be machined and ground, otherwise, the piston can displace in the rotating process, and the machining precision of the piston is affected are solved. And errors caused by inaccurate piston machining and grinding are avoided.

The application discloses an acid-free high-strength welding wire rod iron scale improvement method and relates to the technical field of steel rolling, which comprises the following steps: pretreating a blank; controlling residual oxygen content, soaking section temperature and furnace time of the blank so that the oxidation amount of the blank in the heating furnace is within a threshold range; controlling the wire drawing temperature within a preset range through water tank water amount control; and adopting a two-stage cooling process to cool the rod, wherein the first-stage cooling is air cooling and the second-stage cooling is slow cooling. The application effectively improves the flatness of the high-strength welding wire rod iron scale and the base body bonding interface, and is beneficial to improving the sandpaper polishing performance of the rod. Meanwhile, high-temperature antioxidant coating is not needed, and there is no obvious cost increase compared with other rod production processes.

The utility model provides a curved surface part polishing device, including device body, the inside bottom end of device body is installed with drive motor, drive motor output end penetrates device body bottom end surface and is connected with the mounting seat, the bottom end surface fixed with the sponge piece of mounting seat, the outer side of sponge piece is wrapped and is fixed with polishing sand paper, the outer side screw joint of mounting seat has the limit cover, the utility model discloses through drive motor and drives mounting seat rotation, cooperation mounting seat bottom end fixed sponge piece and the outer side wrapping of polishing sand paper, solved the problem that conventional disc type or plane zonal polishing device is difficult to adapt curved surface part. The sponge piece has good flexibility and adhesion, can adjust with the part curved surface form self -adaptation, ensure that the polishing sand paper and the curved surface surface layer contact fully, realized the even polishing of curved surface part surface layer, polished to ideal state, and through motor drive's high -efficient rotation replaces manual operation, polishing work efficiency is improved significantly.

The utility model relates to the technical field of industrial automation, in particular to an abrasive paper replacing system, a tool table is composed of a workbench frame and a table top plate, the table top plate is arranged at the top of the workbench frame, and a mill calibration mechanism, an abrasive paper tearing mechanism and an abrasive paper feeding mechanism are sequentially arranged at the top of the table top plate. The mill calibration mechanism comprises a detection mounting plate fixed to the top of the countertop through a bolt, the top of the detection mounting plate is sleeved with a linear bearing in a penetrating manner, a guide shaft is sleeved with the linear bearing in a penetrating manner, and a detection disc is fixed to the top end of the guide shaft through a bolt; the grinding machine calibration mechanism is used for adjusting and calibrating the angle of a grinding machine, the abrasive paper tearing mechanism is used for tearing off abrasive paper on the grinding machine, the abrasive paper feeding mechanism is used for installing the abrasive paper on the grinding machine, and the grinding machine calibration mechanism, the abrasive paper tearing mechanism and the abrasive paper feeding mechanism are fixed to the top of the table board through bolts and can be conveniently and independently detached for maintenance and replacement.

This invention discloses a composite abrasive cloth and its preparation method, the process of which is as follows: A sand-planting device is used to implant abrasives of different particle sizes and / or different types onto a base adhesive, thereby distributing the abrasives of different particle sizes and / or different types in a longitudinal strip pattern on the surface of the substrate, forming several longitudinal abrasive surfaces, with adjacent abrasive surfaces having different abrasive particle sizes and / or abrasive types; the sand-planting device includes a sand box, an upper electrode plate, a lower electrode plate, and a sand conveying belt. The lower electrode plate is located below the sand conveying belt, and the substrate is located below the upper electrode plate and opposite to the sand conveying belt. The sand box is provided with several sand box partitions to divide the sand box into several sand-loading units, and the sand conveying belt is provided with several sand conveying belt partitions to divide the sand conveying belt into several conveying units. The abrasive falls from the sand outlet at the bottom of the sand-loading unit into the corresponding conveying unit. The sand conveying belt moves parallel to and towards the substrate, and under the action of an electric field, the abrasive on the sand conveying belt is adsorbed onto the surface of the substrate.

The invention relates to the technical field of precise grinding intelligent monitoring, and discloses an abrasive paper grinding site quality monitoring method based on edge AI. The method comprises the steps that grinding force, acoustic emission and thermal imaging data are collected and fused, and quality feature vectors are extracted through time-frequency transformation; and continuously tracking the feature trajectory, and calculating the deviation degree and stability index of the feature trajectory. And when the indexes exceed the limit, grinding force non-stationarity, acoustic emission burst mode and thermal imaging gradient anomaly are analyzed in parallel, and a collaborative diagnosis anomaly mark is generated. And positioning an abnormal stage, backtracking a feature track, and constructing an abnormal event file containing an abnormal mode, feature evolution and process parameters. And based on the file, a process parameter compensation instruction is generated in real time, a monitoring threshold value is updated, then a compensation effect is evaluated, diagnostic logic is iteratively optimized, and closed-loop monitoring is formed. According to the method, the abnormality diagnosis accuracy and the process adaptive capability are improved.