208 results about "Wear particle" patented technology

The invention provides a reinforced diesel engine friction pair on-line wear detection device and a wear detection method. The reinforced diesel engine friction pair on-line wear detection device comprises a wear calculation terminal, an NI-PXIe8115 acquisition instrument, a sampling detection circulating oil path, a cylinder pressure sensor, a rotating speed sensor, a vibration sensor, an acoustic emission sensor, a six-in-one lubricating oil physical and chemical sensor, an abrasive particle sensor, an abrasive particle visual sensor and a CAN / USB / RS485 communication interface. The method has the beneficial effects that the load of a friction pair of the strengthened diesel engine is large, the process from symptoms to failure is extremely short, and serious fault events are difficult to control, the device can quickly warn an abnormal state after being implemented, gives a corresponding action instruction to a user, and provides a reliable identification means for strengthening research, development and operation safety of the diesel engine.

The invention belongs to the technical field of mechanical equipment wear state monitoring. The method comprises the following steps of: extracting wear rate characteristics, wear degree characteristics, cutting index characteristics, fatigue index characteristics and oxidation index characteristics in an abrasive particle sample image, and respectively clustering to obtain five groups of discrete stage labels; carrying out normalization processing on the five groups of discrete stage labels to obtain a normalized data matrix; according to the data matrix, weights corresponding to all the features are calculated in multiple modes, and the average value of the weights calculated in the multiple modes serves as the final weight of all the features; according to the final weight of each feature and the normalized data matrix, calculating a comprehensive score sequence of all the abrasive particle sample images; performing clustering according to the comprehensive score sequence to obtain a plurality of optimal clustering centers, and determining a current wear stage according to the optimal clustering centers; and more comprehensive and more accurate division of the wear stages is realized.

The invention discloses an electrostatic induction and optical imaging principle-fused online monitoring device and method for wear particles of a water-lubricated bearing, and belongs to the field of state monitoring of mechanical equipment. The device comprises a square insulation detection cavity, a detection electrode array, an electromagnetic shielding shell, a high-speed optical imaging module and a signal processing unit, the square insulation detection cavity is installed in a bearing lubrication water loop. The detection electrode array is fixed to the outer wall of the cavity and used for capturing electrostatic signals generated when the abrasion particles pass through. The electromagnetic shielding shell wraps the detection cavity and is grounded through a wire to eliminate environmental electromagnetic interference. The high-speed optical imaging module integrates a high-magnification microscope lens and a CMOS sensor, is coaxially mounted with the detection cavity, and obtains the morphology characteristics of the wear particles in real time; and the signal processing unit performs multi-modal data fusion analysis on the electrostatic signal and the optical image. Through cooperative detection of electrostatic induction and optical imaging, the monitoring precision and reliability of the wear particles of the water-lubricated bearing are remarkably improved.

The invention discloses a surface wear volume time-space distribution prediction method combining abrasive particle and vibration monitoring, which comprises the following steps: constructing an abrasive particle size distribution driven Markov process, representing a random wear process, and realizing dynamic and probability representation of real-time wear volume time evolution; a physically constrained double-branch mapping model is constructed, fuzzy mapping of the surface wear volume and the vibration time-frequency characteristics is established, and precise observation of wear volume space distribution is achieved; the two physical mechanisms are fused on the basis of a state space modeling framework, a digital twinborn model combining abrasive particle monitoring and vibration monitoring is constructed, and accurate prediction of the abrasion volume of the friction pair part in the time dimension and the space dimension is achieved. According to the method, the wear volume space-time distribution is predicted by fusing the wear particle information and the physical correlation between the vibration characteristics and the wear process, and the precise monitoring of the wear process is realized.

The invention relates to the technical field of grinding machining, and particularly discloses a four-row cylindrical bearing raceway grinding machining device and method.The four-row cylindrical bearing raceway grinding machining device comprises a loading unit, a grinding unit and a grinding unit, the loading unit comprises a rotary table, a flexible clamping piece matched with a bearing outer ring is arranged on the rotary table, and a concave part is arranged in the flexible clamping piece; the grinding unit comprises a grinding motor, the output end of the grinding motor is connected with a rotating shaft, a grinding disc is arranged at the lower end of the rotating shaft, and a multidirectional dynamic cooling piece is arranged on the lower end face of the lifting air cylinder. Uniform clamping force is applied to the outer wall of the bearing outer ring through the flexible clamping piece, clamping stress is restrained, clamping deformation is small, and microscopic cracks caused by stress concentration are avoided. The multidirectional dynamic cooling piece integrates axial injection and radial injection, thermal damage is blocked, the temperature rise of a grinding area is effectively reduced, and the risk of surface burn is eliminated; the high-pressure cooling liquid scours a grinding interface in a turbulent flow mode, and microscopic cracks caused by secondary extrusion of abrasive particles are avoided.

The invention provides a subsurface damage depth prediction and control method for ultra-precision grinding of a semiconductor wafer. The method comprises the following steps that the subsurface damage depth difference of ductile grinding and brittle grinding is analyzed; calculating the critical cutting depth of ductile-brittle transition; establishing the relationship between the subsurface damage depth and the normal force of a single abrasive particle; specifically, on the basis of the relation between the normal force of a single abrasive particle and the plastic radius of a plastic deformation area in ductile grinding and the median crack depth in brittle grinding, the relation between the subsurface damage depth of wafer grinding and the normal force of the single abrasive particle is obtained in combination with ductile-brittle transformation judgment conditions; establishing the relationship between the normal force of a single abrasive particle and the cutting depth of the abrasive particle; establishing the relationship between the abrasive particle cutting depth and the grinding process parameters; and establishing the relationship between the subsurface damage depth and the grinding process parameters. According to the method, the grinding process parameters are reversely solved based on the subsurface damage depth model, the grinding process can be formulated according to specific damage indexes, and the machining efficiency is improved on the basis of meeting the machining requirements.

The invention discloses a grinding wheel wear degree identification method and device based on adaptive neural fuzzy reasoning. The method comprises the steps that a grinding temperature signal, grinding force and the surface quality of a workpiece are obtained; determining the abrasion stage of the grinding wheel according to the surface quality, the grinding force and the grinding temperature; extracting the total number of thermal pulses in the grinding temperature signal as the number of dynamic effective abrasive particles; a grinding wheel surface topography graph is obtained, abrasive dust and abrasive particle abrasion in the grinding wheel surface topography graph are recognized and distinguished through an HSV segmentation method, the area rate is calculated, and the abrasive dust proportion and the abrasive particle abrasion proportion are obtained; and the abrasive dust proportion, the abrasive particle abrasion proportion and the dynamic effective abrasive particle number serve as input, the abrasion stage serves as output, the self-adaptive neural fuzzy inference system is trained, and the trained self-adaptive neural fuzzy inference system is obtained for abrasion degree recognition. According to the method, the abrasion condition of the grinding wheel can be accurately and conveniently judged by utilizing the self-adaptive neural fuzzy reasoning technology and synthesizing the multi-dimensional characteristic signals in the grinding process.

A preparation method for an implant with a bionic anti-wear texture. The preparation method comprises the following steps: placing on a mobile platform of a femtosecond pulse laser processing system a titanium alloy to be processed, and performing femtosecond pulse laser processing according to a preset bionic texture diagram, so as to obtain an implant with a bionic anti-wear texture. In the preparation method, femtosecond pulse laser light is used to process textured patterns on the surface of a medical titanium alloy, so as to form a bionic texture, such that contamination from impurity ions can be reduced, and splashing and the generation of molten particles are reduced, thereby greatly improving the processing quality of a textured surface; moreover, an undulating bionic texture is designed on the surface of a material on the basis of bionic technology, such that the generation of particles during wearing can be reduced, and wearing particles are captured, thereby improving the stability of the titanium alloy during wearing, and thus reducing the extent of wearing on the surface of the material; and neither a secondary surface treatment after texturing nor other modification techniques are required, thereby improving the wear resistance of an implant.

The invention belongs to the technical field of gear box wear state evaluation. The invention provides a vibration and oil fused wind power gear box wear state evaluation method and system, and the method comprises the steps: converting a vibration signal of a wind power gear box into a time-frequency domain image through employing a Markov transfer field, carrying out the resampling of the time-frequency domain image, and obtaining a vibration two-dimensional time-frequency graph with the same pixel as a two-dimensional image of an abrasive particle ring; performing down-sampling on the two-dimensional image of the abrasive particle ring and the two-dimensional time-frequency image of the vibration, fusing the two-dimensional image of the abrasive particle ring after down-sampling and the two-dimensional time-frequency image after down-sampling, and performing up-sampling on a fusion result; and obtaining a wear state evaluation result according to an up-sampling result. According to the method, feature selection deviation caused by subjective factors is avoided, and the accuracy and robustness of wear state recognition are improved.

The invention relates to a polishing performance evaluation method and device and a polishing system for improving the polishing performance. The polishing performance evaluation method comprises the steps that the track lengths of all abrasive particles of a polishing disc are obtained; based on the track lengths of all the abrasive particles, calculating to obtain a track average value and a variance; and based on the trajectory average value and the variance, trajectory distribution uniformity is obtained through calculation. The wafer polishing device has the advantages that the rotating motion of the polishing disc unit and the linear motion of the polishing pad unit are combined, so that the wafer polishing uniformity can be improved, the polishing time is shortened, and the polishing efficiency is improved; the rotating motion of the polishing disc unit and the linear motion of the polishing pad unit are combined, so that uneven abrasion of the polishing pad unit can be avoided, the service life of the polishing pad unit is prolonged, and the cost is reduced.

The invention belongs to the field of fault diagnosis, and particularly discloses a friction pair wear state observation method and system based on online abrasive particle detection. According to the method, the dynamic modeling method on the macroscale and the model parameter estimation method combining the abrasive particle information and the machine learning thought are used, so that the initial state and the model parameters of the model can be further obtained on the basis of the theoretical model; according to the wear state observation method, the limitation that a microscopic model is prone to falling into actual wear complexity can be overcome, and a macrodynamic model capable of representing the actual wear state can be obtained through data-driven parameter estimation, so that the wear process of a mechanical system is diagnosed in real time by utilizing online abrasive particle detection information; and the purpose of tracking and predicting the wear state is achieved.

The invention belongs to the technical field of optical glass, and discloses an optical glass structure with a high-hardness scratch-resistant coating, which comprises the following structures: a chemically strengthened glass substrate; the refractive index gradient transition layer is deposited on the surface of the substrate; and the diamond-like carbon-based hard coating covers the surface of the transition layer. The defect is thoroughly overcome through a gradient strengthening system, the diamond-like carbon coating resists invasion of external abrasion particles through a crystal bonding network close to absolute hardness, so that the surface microhardness breaks through the upper limit of a brittle material, the gradient transition layer constructs an elastic buffer strip below the coating, impact stress is dissipated through the porous nano laminated layer, and the hardness of the coating is improved. The cooperation of the two ensures that no visible scratch is generated on the glass surface even if the glass surface is exposed to a high-wear environment for a long time, thereby fundamentally blocking linkage failures such as light path scattering, imaging blurring and dispersion imbalance caused by surface damage, and ensuring that the light transmittance of a precise optical system in the whole life cycle is stabilized at a theoretical extreme value.

The invention discloses wear-corrosion-resistant high-strength steel for a power transmission tower and a preparation method thereof, and belongs to the technical field of metal materials. The wear-corrosion-resistant high-strength steel for the power transmission tower provided by the invention has good corrosion resistance and wear resistance, has excellent wear resistance in a soil environment of sulfate ions with the concentration of 300 mg / kg-50000 mg / kg and chloride ions with the concentration of 500 mg / kg-10000 mg / kg, and meets various environmental performance requirements of an acid soil environment, an atmospheric corrosion environment and the like. In an acid soil environment, the corrosion resistance is more than 8 times that of plain carbon steel, and the relative corrosion rate is lower than 10%; compared with Q355B, the corrosion rate of atmospheric corrosion resistance is lower than 40%, and the abrasive wear rate is 26.5%-28.0%; and through reasonable matching of corrosion-resistant elements, the requirements of corrosion resistance in various environments are met. The yield strength is 775 MPa-805 MPa, the tensile strength is 952 MPa-985 MPa, the percentage elongation after fracture A50 is larger than or equal to 28%, the low-temperature impact toughness at the temperature of-60 DEG C is larger than or equal to 260 J, meanwhile, the forming performance is excellent, and the 180-degree cold bending requirements that d is equal to 1.0 a are met.

The utility model discloses a tensile steel wire rope, relates to the technical field of steel wire ropes, and aims to solve the problems that in the dynamic use process of the existing steel wire rope in the prior art, due to heat generated by friction and accumulation of abrasion particles, the surface abrasion of the steel wire rope is intensified, and the overall structural strength is influenced. The steel wire rope comprises a steel wire rope body, a rope core and a plurality of steel wire stranded ropes are arranged in the steel wire rope body, the steel wire stranded ropes are wound on the outer side of the rope core, a winding cloth belt is wound on the outer sides of the steel wire stranded ropes, a silicon rubber sleeve is arranged on the outer side of the winding cloth belt, and a rubber sleeve is arranged on the outer side of the rope core. A plurality of oil storage cavities are formed in the rubber sleeve and annularly distributed, oil storage cotton is arranged in the oil storage cavities, and a plurality of lubricating holes are formed in the rubber sleeve along the outer sides of the oil storage cavities.

The invention discloses an on-line monitoring system and method for gearbox oil of a wind turbine generator, belongs to the technical field of gearbox oil monitoring, and solves the problem of how to improve the real-time performance and accuracy of gearbox oil monitoring. According to the invention, multiple sensors are deployed to cooperatively collect oil quality information signals and vibration signals, monitoring is carried out from multiple dimensions of the oil state, and the limitation of monitoring of a single parameter is effectively avoided; by monitoring the oil viscosity, the moisture content and the abrasive particle index of the gear box in real time, the abnormal state caused by lubrication failure or abrasion aggravation can be recognized, and the non-planned shutdown loss can be reduced through a predictive maintenance strategy formulated based on the oil parameter change trend; by monitoring moisture and metal particles in the oil, secondary abrasion caused by lubrication degradation can be effectively inhibited, all-weather state monitoring is conducted on the gear box, safety accidents caused by sudden failures are avoided, and the real-time performance and accuracy of monitoring of the oil in the gear box are effectively improved.

The invention discloses an automobile part grinding constant-force grinding device, and relates to the technical field of constant-force grinding, the automobile part grinding constant-force grinding device comprises a longitudinal adjusting assembly, a transverse adjusting assembly, a clamping assembly, a grinding assembly and a grinding wheel wear monitoring assembly, the three-direction force sensing module is used for measuring the stress variation of the clamping assembly in the X-axis direction, the Y-axis direction and the Z-axis direction, the total grinding force direction and amplitude are obtained, the control terminal receives data and controls the Y-axis motor, the X-axis motor and the Z-axis motor to conduct position compensation on the clamping assembly, the grinding force is adjusted in real time through closed-loop feedback control, quick response is achieved, and the grinding efficiency is improved. A longitudinal damping vibration attenuation module and a transverse damping vibration attenuation module are arranged in the grinding assembly, damping force is changed through current, the influence of vibration on grinding force adjustment is reduced, the grinding wheel abrasion monitoring assembly can obtain abrasion data of abrasive particles on the surface of a grinding wheel through a laser detection module, and the abrasive particles can be replaced in time after abrasion exceeds a threshold value.

The utility model discloses a guiding structure and a magneto-rheological damper with the guiding structure, and relates to the technical field of guiding structures, the guiding structure comprises a guiding sleeve, a dustproof sealing ring, a guiding bearing, a buffering sealing ring and a static sealing ring, a dustproof sealing ring is arranged at the outer end of an inner hole of the guide sleeve, a buffering sealing ring is arranged at the inner end of the inner hole of the guide sleeve, the inner diameters of the dustproof sealing ring and the buffering sealing ring are matched with the piston rod, a static sealing ring is arranged between the guide sleeve and a cylinder body of the piston cylinder, and a guide bearing is arranged on the inner side of the buffering sealing ring. The buffering sealing ring can prevent iron powder particles from entering the guide sleeve, abrasive particle abrasion to the guide bearing is prevented, the service life of the guide sleeve and the service life of the guide bearing are prolonged, the sealing reliability is improved through two-end sealing, and friction force between the guide sleeve and the piston rod is reduced; assembly operation is simple, the device is suitable for automatic assembly production, the structure is simple, parts are few, and the production cost can be greatly reduced.

The invention relates to the technical field of state monitoring, in particular to a ship main transmission device wear state real-time monitoring and maintenance system which comprises a load path recognition module, an abrasive particle distribution monitoring module, a thermal field response judgment module, a crack evolution tracking module and a maintenance adjustment module. According to the method, the strain data of the front end and the rear end of the main shaft are subjected to time sequence comparison, so that the strain transfer trend in a transmission path can be dynamically captured, and path parts in an abnormal abrasive particle peak value state can be screened out in combination with the mapping relation between the number of particulate matters and the particle size grade; according to the method, a potential thermal response imbalance area in a local structure is identified by combining the change trend of the difference between the axial temperature rise rate and the radial temperature rise rate, meanwhile, pre-judgment of a crack initiation section is completed by combining the peak sudden change characteristic of the number of structural node strain fluctuation times, and real-time identification, trend study and judgment and risk early warning of the running state of the main transmission device are achieved. And timeliness and accuracy of maintenance response are improved.

This application relates to the technical field of mixer accessories, and in particular to a mixer blade and a preparation method thereof. The mixer blade includes: a ductile matrix, a wear-resistant part, and a wear-resistant layer; wherein, the ductile matrix is formed with a plurality of forming holes, and the wear-resistant part is arranged in the forming holes; the wear-resistant layer covers the surfaces of the ductile matrix and the wear-resistant part. It can be seen that the wear-resistant part and the wear-resistant layer have a certain hardness, that is, they have good wear resistance, while the ductile matrix has a certain toughness. The toughness of the ductile matrix is used to make up for the brittleness of the wear-resistant part and the wear-resistant layer, achieving complementary advantages, that is, the overall impact toughness of this mixer blade is relatively high, solving the problem of fracture during application, and also having good resistance to abrasive wear.

The invention discloses a wear resistance detection method and equipment for a gantry machine tool spindle system, and relates to the technical field of machine tool spindle state detection.The method comprises the steps that when a spindle runs, torque and rotating speed signals are collected firstly, and friction power input energy is calculated; synchronously collecting a main shaft and lubricating oil feature set to establish heat loss energy, and calculating acoustic emission energy by using an acoustic emission array; executing oil detection to establish abrasive particle generation potential, and calculating equivalent wear energy to obtain a first path wear detection result; activating the ultrasonic sensor to obtain a second path of wear detection result; and outputting a wear resistance detection result after interactive authentication. The gantry machine tool spindle system wear resistance detection method solves the technical problems that the gantry machine tool spindle system wear resistance detection means is single, the wear state cannot be reflected in real time, only the local physical quantity can be captured, detection data are one-sided, and accuracy and reliability are insufficient, and achieves multi-dimensional real-time comprehensive detection of the gantry machine tool spindle system wear resistance. And the comprehensiveness, the accuracy and the reliability of the detection data are improved.

The invention discloses an ultrasonic longitudinal-torsional composite vibration grinding method and device for an inner hole of a pipe with a large length-diameter ratio, and aims to solve the problems that according to an existing grinding method for the inner hole of the pipe with the large length-diameter ratio, edge breakage or microcracks are likely to be generated, the machining quality of a workpiece is affected, meanwhile, the machining efficiency of the whole workpiece is reduced, and mass production cannot be achieved. The grinding mode of the inner hole of the pipe with the large length-diameter ratio and the ultrasonic longitudinal-torsional composite vibration mode are coupled for use, abrasive particles of a grinding tool can generate periodic high-frequency micro-amplitude movement in the axial direction and the tangential direction at the same time, the composite action mechanism of high-frequency impact and shearing is achieved, the grinding force of the abrasive particles is reduced, and meanwhile the grinding efficiency is improved. In addition, the contact characteristic of abrasive particles on the grinding tool and the workpiece is changed through vibration superposition, the workpiece material is promoted to be removed in a plastic mode, surface edge breakage and microcracks are greatly reduced, the integrity of the machined surface is improved, machining damage of hard and brittle materials is remarkably reduced, the removal efficiency of the workpiece material can be improved, and mass production is achieved.

The present invention employs a configuration without a base material, and provides a base material-less abrasive material that flexibly deforms to conform to the surface of the object to be polished, especially if the surface has a curved shape, and has good polishing characteristics. The substrate-less abrasive material 1 of the present invention does not have a substrate, and a plurality of abrasive grains 2 are held in a dispersed state in a base portion 3 which contains a total of 60 volume% or more of at least one of the base components of resin and elastomer. The type A durometer hardness measured in accordance with the hardness test specified in JIS K7311-1995 is 50 to 80, the tensile strength is 70 to 250 MPa, and the tensile elongation is 10 to 360%.

The invention discloses a functional structure integrated optimization polishing pad capable of uniformly removing materials. The functional structure integrated optimization polishing pad comprises a polishing layer and an elastic layer, the polishing layer is composed of a plurality of protrusions, and the protrusions are arranged in a honeycomb shape. The elastic layer is of a concentric partition structure and comprises a soft area and a hard area. By designing surface patterns of the polishing pad, abrasive particle tracks on the surface of the workpiece are uniformly distributed; by designing the polishing pad structure, the contact pressure on the surface of the workpiece is uniformly distributed. The surface pattern and structure of the polishing pad are subjected to comprehensive optimization design, integrated optimization of the functional structure of the polishing pad is achieved, the abrasive particle motion trail and contact pressure distribution can be cooperatively regulated and controlled, and the material removal uniformity of the surface of a workpiece is improved.

The application relates to the technical field of coating preparation, in particular to a wear particle wear-resistant coating heat treatment method and a preparation device thereof, which comprises a main part, a release part and a preparation device; the main part comprises a mixing assembly, a quantitative assembly arranged in the mixing assembly and a shielding assembly arranged outside the quantitative assembly; the release part comprises a partition assembly arranged in the mixing assembly, a control assembly arranged outside the shielding assembly and a guide assembly arranged outside the control assembly; firstly, the crushed material is sent into the mixing assembly, then the material is proportioned through the quantitative assembly, the quantitative assembly and the shielding assembly are controlled to rotate, the shielding assembly is separated from the discharge port of the quantitative assembly under the resistance of the guide assembly, the material enters the partition assembly, the proportioning of the ceramic particles and the metal powder is realized, when a certain amount of material is accumulated in the partition assembly, the partition assembly releases the material into the stirring cavity A2, and the mixing and proportioning of the ceramic particles and the metal powder are realized.

An object of the present invention is to provide an abrasion powder collection method and an abrasion powder collection device capable of collecting abrasion powder while preventing aggregation of the abrasion powder.SOLUTION: A method for collecting abrasion powder of the present invention includes a collecting step of sucking and collecting abrasion powder obtained by pressing a rubber piece against an abrasion drum and rotationally abrading the rubber piece by a suction device, wherein in the collecting step, powder for preventing aggregation is supplied to a rotational abrasion surface between the abrasion drum and the rubber piece, and a supply flow amount of the powder for preventing aggregation is 0.5 to 6.0 (cm3 / min). A device for collecting abrasion powder of the present invention includes an abrasion drum configured to be capable of pressing a rubber piece, a suction machine for sucking abrasion powder, and a supply unit for supplying powder for preventing aggregation to a rotational friction surface between the abrasion drum and the rubber piece, in which the suction machine includes a suction nozzle, and the suction nozzle is disposed immediately below the rotational friction surface of the abrasion drum with the rubber piece.SELECTED DRAWING: Figure 1

An apparatus for rapidly measuring the content of ferromagnetic wear particles in used lubricating grease includes a test mainframe. Inside the housing of the mainframe, there are a coil and a circuit module. The coil is connected to the input end of the circuit module, and the output end of the circuit module is connected to a display. A display and function keys are installed on the panel of the housing of the mainframe. A test port is provided on the housing of the mainframe, and the coil is provided around the test port. There is also a sampler that cooperates with the test port. The advantages of the present invention are: simple and compact structure, capable of sampling and measuring on-site, or measuring in a laboratory after sampling with the sampler, rapidly analyzing the sampled used lubricating grease, short time period, strong correspondence between the results and the spectrometry method, and suitable for on-site maintenance of equipment. Especially for the characteristics of high grease consistency, poor fluidity, and difficulty in extracting wear particles, there is no need to pretreat the sample, which is convenient, fast, and highly operable.

The utility model relates to the technical field of grinding wheels. In order to overcome the defects that an existing grinding wheel is difficult in chip removal and short in service life, the utility model provides a light-weight combined type grinding wheel which comprises a bottom plate, a cover plate and an adapter. Wherein the bottom plate and the cover plate are coaxially attached and are fixed through the adapter. A plurality of bosses are formed on the surface of the side, away from the cover plate, of the bottom plate. The bosses are evenly distributed around the axis of the bottom plate at intervals. Abrasive particles are laid on the top face of each boss. The bosses are spaced from each other, and a chip groove is formed between every two adjacent bosses. And the chip groove is used for discharging abrasive dust generated by grinding. According to the utility model, the boss and the chip groove are arranged on the cover plate, and the diamond abrasive particles are laid on the top surface of the boss in a brazing manner, so that the convenience of the grinding wheel during chip accommodating and chip removal is improved, and dust generated during grinding is reduced. And under the condition that the abrasive particles are abraded and fall off, the bottom plate can be independently replaced, so that the service life of the grinding wheel is longer.

1. Name of the design product: Ferrograph (double rotary). 2. Use of the design product: An instrument for depositing, collecting ferromagnetic wear particles in oil and removing oil and other contaminants by rotating centrifugal force, gravity and magnetic force. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention relates to a machining method and system for a hard and brittle material workpiece. In one aspect, the machining method comprises the steps that a viscous medium is applied to the to-be-machined surface of a workpiece; and the fixed abrasive tool makes contact with the to-be-machined surface and generates relative movement for grinding machining, in the grinding machining process, abrasive particles falling off from the fixed abrasive tool in the grinding machining process are captured by the viscous medium and suspended at the contact interface of the fixed abrasive tool and the workpiece, so that a free abrasive layer is formed, and the free abrasive layer is separated from the to-be-machined surface. And therefore, the abrasive particles in the free abrasive material layer perform in-situ grinding on the to-be-machined surface. Therefore, the cutter lines are reduced or even eliminated, and the surface machining quality of the workpiece is improved.

The invention belongs to the technical field of metal finish machining, and particularly relates to an all-dimensional polishing device and method for a bare wire iron pan. The all-dimensional polishing device comprises a back adjusting plate, a main body unit is arranged in the space on one side of the back adjusting plate, a control unit is arranged at the end, close to the back adjusting plate, of the main body unit, and a fine grinding unit is arranged in the space on one side of the control unit; a monitoring unit is arranged in the fine grinding unit; the rigidity defect of integral grinding of a traditional grinding disc is flexibly treated by dividing the grinding disc, and the abrasion degree of the grinding disc in the corresponding area is reflected in real time through axial jumping of the vertical rod, that is, when an ejector pin makes contact with each spring pressure plate, it is indicated that the abrasion degree of the grinding disc in the current area reaches saturation, and the abrasion degree of the grinding disc in the current area reaches the saturation degree. And the end plate is used for rotating and reversing the dust cover and replacing the abrasive disc in an abrasion area, so that the phenomena of deformation and annealing caused by non-uniform abrasive particles of the abrasive disc are reduced, meanwhile, the cutting quality of the front and back of the abrasive disc is improved, and the generation probability of non-uniform abrasive particles, scratches and recesses of the abrasive disc is reduced to a certain extent.