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26 results about "Abrasive flow machining" patented technology

Abrasive flow machining (AFM), also known as abrasive flow deburring or extrude honing, is an interior surface finishing process characterized by flowing an abrasive-laden fluid through a workpiece. This fluid is typically very viscous, having the consistency of putty, or dough. AFM smooths and finishes rough surfaces, and is specifically used to remove burrs, polish surfaces, form radii, and even remove material. The nature of AFM makes it ideal for interior surfaces, slots, holes, cavities, and other areas that may be difficult to reach with other polishing or grinding processes. Due to its low material removal rate, AFM is not typically used for large stock-removal operations, although it can be.

Abrasive flow polishing device and method for gear tooth surface homogenization

PendingCN120862541AEdge grinding machinesPolishing machinesGear wheelAbrasive flow machining
The invention provides an abrasive flow polishing device and method for gear tooth surface homogenization. According to the method, tooth-shaped drainage pieces with the same shape as the gear are installed at the two ends of the upper portion and the lower portion of the gear, drainage section design is introduced, an abrasive flow medium path runner model is constructed, main parameters influencing an experiment are sampled and grouped through a Latin hypercube sampling method, abrasive flow polishing simulation is conducted in a grouped mode, and a Gaussian regression process is utilized to obtain an abrasive flow polishing simulation result. Selecting the minimum root-mean-square error of each group of PiVi data, determining the group of experimental parameters, obtaining a group of abrasive flow machining process parameters of optimal inlet pressure, back pressure and drainage section length, and finally guiding the experiment; according to the method, the influence of the inlet effect is relieved, the abrasive flow medium path runner model is constructed, a set of optimal abrasive flow machining process parameter combination is obtained, and the method is suitable for spur gears and bevel gears and high in universality.
Owner:CHONGQING UNIV

Method for judging machining performance of fluid abrasive for abrasive flow machining

PendingCN120538999AFlow propertiesPreparing sample for investigationAbrasive flow machiningViscosity
The invention relates to a method for judging the processing performance of a fluid abrasive material for abrasive flow processing, which is characterized by comprising the following steps of: 1, uniformly stirring the fluid abrasive material to ensure that hard abrasive particles are uniformly distributed in the fluid abrasive particles; 2, testing the viscosity of the fluid abrasive material to obtain a fluid abrasive particle viscosity curve; step 3, fitting the measured viscosity curve by using a judgment equation; step 4, obtaining fitted equation parameters; 5, the obtained equation parameters A0, c, B and A infinity are multiplied by passivation coefficients respectively, so that four performance parameters are obtained, and the four performance parameters are sequentially compared; and step 6, obtaining processability evaluation of the fluid abrasive based on a comparison result of the performance parameters. According to the method, a scientific decision basis is provided for selection of the fluid abrasives in actual production and processing of the abrasive flow, and the risk that the production cost is increased due to wrong selection of the fluid abrasives is reduced.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Ultrasonic abrasive flow surface texture machining device and method based on auxiliary magnetic field

PendingCN121715921AGrinding carriagesGrinding bedsSurface engineeringAbrasive flow machining
The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.
Owner:BEIJING UNIV OF TECH

Machining method for inner ring of short cylindrical roller bearing with flange-free outer ring

The invention discloses a processing method of an inner ring of a short cylindrical roller bearing with a flange-free outer ring, relates to a processing method of a bearing inner ring, and aims to solve the problem that the stability, the consistency and the bearing surface quality of the conventional processing method of the short cylindrical roller bearing with the flange-free outer ring cannot meet the requirements of a user on the bearing quality. The method comprises the following steps: carrying out rough turning and fine turning on a bearing inner ring in sequence, and then turning a raceway, an inner chamfer and an outer chamfer, turning an oil groove and drilling two rows of oil holes; heat treatment is conducted, then coarse grinding is conducted firstly, then fine grinding is conducted, tempering is supplemented at high temperature, then oil grooves and oil holes are cleaned, an inner raceway is subjected to final grinding, acid pickling is conducted, hydrogen removal is conducted, and the outer diameter of the inner ring and the inner diameter are subjected to final grinding; and respectively carrying out abrasive flow machining on the outer surface and the inner surface of the bearing inner ring, then carrying out flaw detection, finely grinding an inner raceway, and submitting inspection. By the adoption of the machining method, the precision scatter difference of the obtained bearing inner ring is controlled within 0.5 micrometer, the consistency and stability of the machining method are good, and the machining method is applied to the field of bearings.
Owner:AVIC HARBIN BEARING CO LTD

Chemical finishing method for thrust device mount having inner cavity structure with narrow flow channels

PCT designated stageWO2025227658A1Additive manufacturing apparatusAbrasive flow machiningDissolution
The present invention belongs to the technical field of the chemical finishing of additive manufacturing products. Disclosed is a chemical finishing method for a thrust device mount having an inner cavity structure with narrow flow channels. A chemical finishing solution comprises the following components: HF: 60-80 g / L, HNO3: 70-90 g / L, and an additive: 0.2 g / L, with the balance being water. The parameters of chemical finishing are as follows: the pump pressure is 0.2-0.5 kg / cm3, and the chemical finishing time is 2 min. The chemical finishing method for the inner cavity of an additive manufacturing product provided by the embodiments of the present invention polishes and flattens the inner cavity which is difficult to polish and flatten by means of conventional physical methods such as abrasive flow machining and mechanical polishing, and achieves uniform dissolution of powder particles in the inner cavity of a product, and the processed product is free of deformation, processing stress defects, the risk of hydrogen embrittlement, etc. By adding the additive, the amount of an acid mist that escapes during a chemical finishing process is reduced, and environmental pollution is avoided. By means of the chemical finishing method provided by the embodiments of the present invention, a flow channel in an inner cavity of a processed part has a good surface quality, and the liquid flow meets the requirements.
Owner:XIAN SPACE ENGINE CO LTD

Universal flow dividing tool for converting single outlet into multiple outlets of abrasive particle flow equipment

The invention relates to the technical field of abrasive flow machining equipment auxiliary devices, in particular to an abrasive flow equipment single-outlet-to-multi-outlet universal flow dividing tool which comprises a base, an adapter, a sealing plug and a hydraulic oil pipe. The foundation seat is a foundation of the whole tool structure, all the accessories are connected to the foundation seat, the outer side face of the foundation seat is provided with a plurality of sets of flow dividing holes in the radial direction and communicated with a plurality of flow channels, the adapters and internal threads of the flow dividing holes are installed in a matched mode, the two ends of the hydraulic oil pipe are provided with nuts, and the foundation seat and a matched tool are connected to convey abrasive particles. The flow dividing tool overcomes the defects that an existing flow dividing tool of abrasive flow equipment is poor in adaptability, uneven in flow dividing and unreliable in sealing, is used for the abrasive flow equipment, can achieve conversion from a single outlet to multiple outlets of the abrasive flow equipment, achieves flexible adaptation to parts of different sizes and different shapes, guarantees that the pressure and flow of abrasive media of all the outlets are uniform, and improves the flow dividing efficiency of the abrasive flow equipment. And meanwhile, the sealing performance in a high-pressure state is ensured, and the abrasive flow machining efficiency and machining quality are remarkably improved.
Owner:SHENYANG FORTUNE PRECISION EQUIP CO LTD

Method for processing diamond material by abrasive flow

ActiveCN121083531AAbrasion apparatusCarbide siliconAbrasive flow machining
The invention discloses a method for processing a diamond material by abrasive flow, which comprises the following steps of: bombarding the surface of a diamond to form a surface graphite layer by using an elastic abrasive material wrapped with 45-85 percent by weight of diamond abrasive particles under the bombardment pressure of 0.1-0.8 MPa at the bombardment speed of 100-5000ml / min; and bombarding the surface graphite layer by adopting an elastic abrasive material wrapped with silicon carbide abrasive particles or diamond abrasive particles to obtain the processed diamond material. According to the method, the complex diamond surface can be efficiently machined.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI

Machining process of EDU drilling and countersinking integrated cutter

PendingCN121199588ANumerical controlTool bit
The invention discloses a machining process of an EDU drilling and countersinking integrated cutter. The method comprises the following steps that S1, raw material preparation and nano coating treatment are conducted, specifically, ultra-fine grain WC-Co hard alloy powder and PCD composite sheet particles are selected as core raw materials, and a nano AlTiN coating is prepared on the surface of a PCD composite sheet through a vacuum arc ion plating technology; s2, integrally forming the cutter bar: mixing the raw materials subjected to the nano coating treatment in the step S1 according to a proportion, and putting the mixed raw materials into a vacuum hot pressing furnace for one-time hot pressing forming; s3, closed-loop machining of a tool bit functional structure is conducted, specifically, a five-axis linkage numerical control machining center is adopted, and a drilling edge is machined on the tool bar blank in combination with an ultrasonic-assisted cutting technology; s4, global precision calibration is carried out, wherein a high-precision main shaft runout instrument is adopted to detect the runout degree of the cutting edge of the tool bit and the runout degree of the handle part; and S5, surface treatment and final inspection are conducted, specifically, the cutting edge of the tool bit is subjected to passivation treatment through an abrasive flow machining technology, and the passivation value of the cutting edge reaches 0.005 mm. The EDU drilling and countersinking integrated cutter is resistant to abrasion and high in process machining precision.
Owner:SUZHOU SHANDE PRECISION TOOLS

Clamping device suitable for high-speed abrasive flow machining of gyroscope frame

ActiveCN223383252UEdge grinding machinesPolishing machinesGyroscopeAbrasive flow machining
The utility model relates to a clamping device suitable for high-speed abrasive flow machining of a gyroscope framework, which comprises a clamping mechanism, a rotating mechanism and a connecting mechanism, the clamping mechanism comprises a framework and a framework gland, and the framework is clamped between the framework and the framework gland; the rotating mechanism comprises a ball gland, a ball seat, a ball and a ball rod, the lower end of the ball is fixedly connected with the upper end of the ball rod, the upper end of the ball is installed in the ball seat, and the ball gland is connected with the ball seat and wraps the upper end of the ball; the framework is connected with the ball gland through the connecting mechanism. According to the clamping device, the application blank of the clamping device of the gyroscope frame in the high-speed abrasive flow deburring technology is filled up, the problem that the deburring quality of the gyroscope frame cannot meet the assembly and use requirements is solved, and the problems that burrs on a wire slot of the frame cut a lead wire to cause a short-circuit fault and the service life of the gyroscope is prolonged in the high-speed running process of the gyroscope are avoided. Due to the fact that burrs on a vibration frame fall off, the gyroscope is stuck or damaged, and potential quality hazards are generated.
Owner:CHINA STATE SHIPBUILDING CORP NO 707 RES INST

Tool for machining adaptive workpiece through abrasive flow

The utility model discloses a tool for abrasive flow processing of adaptive workpieces, which comprises an adaptive tool structure, the adaptive tool structure comprises an auxiliary pressing plate, a sleeve column and a polyurethane shrinkage bushing, the lower end of the sleeve column is sleeved in the middle of the upper end of the auxiliary pressing plate, the upper part of the outer surface of the sleeve column is sleeved with a fixing block, the upper end of the fixing block is fixedly provided with a workpiece supporting plate, and the upper end of the workpiece supporting plate is fixedly provided with a clamping groove. Workpieces penetrate through the edge of the workpiece supporting plate at equal intervals, the top end of the sleeve column is sleeved with a rotary pressing base, and the lower portions of the outer surfaces of the workpieces are sleeved with polyurethane shrinkage bushings. The rapid butt joint structure comprises a butt joint screw pipe, movable springs are fixed to the outer side of the step at equal intervals, a locking column is arranged in the butt joint screw pipe in a threaded mode, the outer edge of the upper end of the locking column is sleeved with a limiting ring, a limiting hole extending out of the pressing flange is formed in one side pipe of the outer surface of the limiting ring, and a limiting column is arranged in the limiting hole in a sleeved mode. The workpiece surface machining completeness can be ensured, the using effect is improved, and the using requirement is met.
Owner:RON GRINDING TECH (SUZHOU) CO LTD

Processing control method for closed flow channel of tubular diffuser

The invention discloses a tubular diffuser closed flow channel machining control method, and relates to the technical field of diffuser machining control, the method comprises the following steps: S1, collecting machining state data in electrolytic machining, electric spark machining and abrasive flow machining procedures in real time, after the electrolytic machining procedure, a three-dimensional scanning system is adopted to obtain an actual allowance distribution digital map of the inter-blade channel; s2, inputting the actual margin distribution digital map into a pre-constructed process chain digital twinborn model, and predicting processing results under different parameter combinations through virtual simulation to obtain an optimized initial process parameter set; s3, according to the optimized initial process parameter set and the actual margin distribution digital map, margin uniformity analysis is carried out, and regional electric spark machining path planning is generated; and S4, according to discharge state data monitored in real time in the electric spark machining process, thickness distribution of the remelting layer is predicted, and technological parameters of abrasive flow machining are determined based on a prediction result.
Owner:YANCHENG INST OF IND TECH

Nondestructive testing method for minimum curvature radius of micropore abrasive flow machining chamfer

The invention discloses a high-precision nondestructive testing method for the form of a micropore abrasive flow machining chamfer, and belongs to the technical field of precision machining. The method comprises the following steps: firstly, acquiring micropore characteristic parameters through image acquisition equipment, and inputting the micropore characteristic parameters into a mathematical model to obtain the minimum curvature radius of a chamfer; according to the method, a mathematical model is used for describing the micropore chamfer contour form, and the evolution law of main parameters in the micropore orifice form evolution process is provided. Meanwhile, the linear regression relation between the micropore orifice form and the chamfer minimum curvature radius is analyzed, a mathematical correlation model of the micropore orifice form and the chamfer is provided according to the regression analysis result, nondestructive testing and evaluation of the micropore chamfer minimum curvature radius can be achieved through the model, and the micropore chamfer detection process after abrasive flow machining is simplified.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Abrasive flow processing device for screw polishing and working method thereof

ActiveCN117226717BAbrasive machine appurtenancesElectric machineAbrasive flow machining
The invention discloses an abrasive flow processing device for screw polishing and a working method thereof. The abrasive flow processing device comprises a constraint pipe, one end of the constraint pipe is provided with a fixed box and a screw reduction motor, and the other end of the constraint pipe is connected to a convection section pipe; a screw is assembled in the constraint pipe, a forced feeder is installed on the constraint pipe, the constraint pipe and the convection section pipe are slidably mounted on a guide rail, an electric cylinder is slidably mounted on the guide rail through a bottom plate, and the electric cylinder is connected to the convection section pipe through a piston; the device formulates corresponding constraint pipes according to screws of different sizes, thereby improving the adaptability of the device; the device on the guide rail can slide to different positions along the guide rail direction, thereby solving the problem of difficult assembly and disassembly of the device.
Owner:ZHEJIANG UNIV OF TECH

Tool structure for abrasive particle flow of turbine blade

The utility model relates to the technical field of machining equipment, in particular to a turbine blade abrasive flow tool structure which comprises a cover plate A, a cover plate B, a base A, a base B and a turbine blade. The turbine blade is composed of a blade, an inner ring and an outer ring, the blade is arranged between the inner ring and the outer ring, and a circle of flange is arranged in the middle of the outer circle of the outer ring. The cover plate A is arranged above the inner ring, the cover plate B is arranged below the inner ring, and the cover plate A and the cover plate B are fixedly connected through a screw A; the base A is arranged above the outer ring, the base B is arranged below the outer ring, the base A and the base B are fixedly connected through a screw B, the base A is provided with a plurality of abrasive particle flow channels A, and the base B is provided with a plurality of abrasive particle flow channels B. According to the device, the turbine blade is accurately fixed in the abrasive flow treatment process, and the turbine blade is effectively prevented from moving or deforming in the machining process.
Owner:沈阳融创精密制造有限公司

Liquid metal abrasive particle flow processing device and method based on Halbach magnetic field

PendingCN121973085AImprove polishing uniformitySettlement inhibitionEdge grinding machinesPolishing machinesAbrasive flow machiningLiquid metal
The invention discloses a liquid metal abrasive particle flow machining device and method based on a Halbach magnetic field. The problem that in the prior art, the polishing uniformity of a complex curved surface is poor is solved. The machining device comprises a platform frame, a mounting plate is arranged on the platform frame, a visual machining module is arranged on the mounting plate, and the two ends of the visual machining module are in linkage with driving air cylinders through push rod assemblies. The visual machining module comprises a closed profiling constraint runner formed by transparent acrylic plates, a workpiece to be machined is fixed in the runner, and the two ends of the runner are connected with piston rods of the driving air cylinders through push rod assemblies. A Halbach permanent magnet array is arranged below the workpiece, and the Halbach permanent magnet array is formed by neodymium iron boron permanent magnets according to a Halbach polarity arrangement mode and used for generating a strong gradient directional magnetic field with one side enhanced and the back side weakened in a machining area.
Owner:ZHEJIANG UNIV OF TECH

A dynamic and static process control method for discharge-driven abrasive flow machining micro-needle die

PendingCN122165322AAbrasive feedersAbrasive machine appurtenancesMilling cutterAbrasive flow machining
The application discloses a kind of discharge driving abrasive flow processing microneedle die core dynamic and static process control method: S1 in the microneedle die core forming milling process, using PCD slope cutter, free abrasive liquid is added on workpiece, while programmable power supply anode is connected to microneedle die core, cathode is connected to milling cutter handle, and abrasive flow is formed in the gap between cutter and microneedle side face;Workpiece material is removed under the joint action of cutter and abrasive flow, and microneedle die core is formed;S2 effective pulse discharge energy is judged by discharge waveform, pulse discharge power is calculated and output to controller;S3 closed-loop feedback control is realized by controller during processing, and dynamic and static stability of control abrasive removal force in the gap between cutter and workpiece surface is realized.The application can effectively improve the machining precision of microneedle die core and reduce needle tip radius by controlling the processing of microneedle die core.
Owner:SOUTH CHINA UNIV OF TECH

V / W wave band low-loss metal waveguide and preparation method thereof

ActiveCN121440079AWaveguidesAbrasive flow machiningAlloy
The invention relates to the technical field of millimeter wave communication, in particular to a V / W wave band low-loss metal waveguide and a preparation method thereof. According to the preparation method provided by the invention, metal additive manufacturing, inner wall conductive metal deposition, ultra-smooth inner surface polishing and external single-point diamond turning technologies are combined, so that the waveguide manufactured by a composite process chain is high in yield; comprising an aluminum-magnesium (zirconium) alloy waveguide structure manufactured through laser beam melting additive manufacturing, a copper (silver) inner wall coating deposited through a chemical reduction plating technology, an inner wall surface with the roughness lower than 50 nm Ra through abrasive flow machining, and a self-alignment flange with the flatness lower than 0.1 micron and the butt joint surface roughness lower than 20 nm Ra through ultra-precision machining. And the electrical performance, the thermal interface consistency and the assembly precision are improved. According to the preparation method, the problems of high price-mode coupling, uncontrollable inner wall roughness and the like caused by high insertion loss and large structure assembly error of the existing waveguide structure in high-frequency application are solved.
Owner:JIALIN PRECISION OPTICS (SHANGHAI) CO LTD

Additively-manufactured electrical transmission line, and method of making

An additively-manufactured electrical transmission line is made as a single, unitary continuous monolithic additively-manufactured piece of material, including an outer housing defining a cavity therewithin, a conductive stripline passing through the cavity, and stubs within the cavity electrically coupling the outer housing to the stripline. The stripline may be a flat stripline. The stubs may be angled relative to the stripline, to facilitate surface treatment within the housing, such as abrasive flow machining to reduce surface roughness, which may be part of a method of making the electrical transmission line. The electrical transmission line may be part of an electrical installation including multiple such electrical transmission lines, which may have shapes, including curved shapes, for making desired electrical connections between components.
Owner:RAYTHEON CO

Abrasive particle flow machining device for cleaning sharp edges and burrs at deep hole ring groove

PendingCN120862576ACleaning using toolsAbrasive machine appurtenancesParticle flowAbrasive flow machining
An abrasive flow machining device for cleaning sharp edges and burrs at a deep-hole annular groove belongs to the technical field of aircraft part machining equipment.The abrasive flow machining device comprises a machining box and a six-axis manipulator located in an inner cavity of the machining box, a storage box is arranged on one side of the machining box, and a pump body A is fixedly mounted at the position, close to the middle, of the top of the storage box; a feeding pipe is fixedly installed at one end of the pump body A, the bottom end of the feeding pipe penetrates through an inner cavity of the storage box, a discharging pipe is fixedly installed at the other end of the pump body A, and a spraying pipe is fixedly installed at the bottom end of the discharging pipe. Iron-containing impurities in a fluid grinding material can be adsorbed through the electrified magnetic rod A and the electrified magnetic rods B. In the rotating process of the electrified magnetic rod A, the electrified magnetic rods B can move up and down in a reciprocating mode, so that the iron-containing impurities in the fluid grinding material can be fully and completely adsorbed, and the chipping treatment effect is improved.
Owner:CHENGDU YIGE MACHINERY CO LTD

A method and fixture for mirror polishing of large-diameter straight tubes using abrasive flow

The present invention belongs to the technical field of abrasive flow precision machining, and specifically relates to a method and fixture for abrasive flow mirror polishing of large-diameter straight tubes. The fixture comprises an upper flow guide assembly, a lower flow guide assembly, and a contoured core mold that matches the inner surface structure of the large-diameter straight tube. The large-diameter straight tube is sleeved on the outer periphery of the contoured core mold, and the two ends of the large-diameter straight tube are respectively nested in the groove-shaped step rings of the upper flow guide assembly and the lower flow guide assembly. The two ends of the contoured core mold are respectively fixedly connected to the upper flow guide assembly and the lower flow guide assembly via threads. Abrasive flow machining using the method of the present invention will not scratch the inner wall of the large-diameter straight tube or cause the coating to fall off. In addition, because an abrasive flow channel is formed between the outer surface of the contoured core mold and the inner cavity wall of the large-diameter straight tube, the abrasive flow area is reduced. When the abrasive passes through the channel, the pressure and flow rate increase due to the reduction in the flow area, and the shear stress increases, thereby achieving mirror polishing of the inner wall of the large-diameter straight tube by the abrasive flow.
Owner:SHAANXI JXTT MATERIAL TECH CO LTD

Horizontal type tool for abrasive flow machining

ActiveCN223572890UEdge grinding machinesPolishing machinesPull forceAbrasive flow machining
The utility model discloses a horizontal type tool for abrasive flow machining, which comprises a limiting component, a connecting component, a positioning component, a clamping component and a clamping component, and the limiting component comprises a fixed column, a guide column, a connecting shaft and a limiting plate; the fixing column is clamped in the supporting strip, the guide column is fixed to the upper surface of the fixing column, the connecting shaft is fixed in the top end of the guide column, and the limiting plate is rotationally connected to the outer surface of the connecting shaft. By means of the limiting assembly, when a workpiece needs to be placed, the workpiece is placed on the supporting strip at the corresponding position, the silica gel column is inserted into the supporting strip, the fixing column is clamped in the supporting strip, pulling force is applied to the guide plate, the limiting column is driven to be separated from the interior of the guide column, and under the action of the connecting shaft, the workpiece is placed on the supporting strip at the corresponding position. According to the scheme, the rotating force is applied to the limiting plate, the limiting plate is clamped in the other set of guide columns, the force applied to the guide plate is cancelled, and the limiting columns spring back to the interior of the limiting plate under the elastic force effect of the springs, according to the scheme, the workpiece is stably limited to the needed position, and the machining efficiency is improved.
Owner:RON GRINDING TECH (SUZHOU) CO LTD

Polishing medium returning device and method for abrasive flow one-way machining

The invention discloses an abrasive flow one-way machining polishing medium returning device which comprises a rack, one side of the top of the rack is connected with a thrust system through a supporting unit, the thrust system is connected with a hydraulic station through a pipeline, the outlet end of the thrust system is connected with a discharging pipe, the bottom of the rack is connected with a reverse thrust system, and the reverse thrust system is connected with the thrust system. The reverse thrust system is arranged under the discharging pipe. The invention further discloses a material returning method of the polishing medium material returning device for abrasive particle flow one-way machining. By means of the reverse thrust system and the thrust system, closed-loop circulation of extrusion, collection, backfilling and re-extrusion of the abrasive particles is constructed, medium recycling and backfilling can be completed without manual intervention, and the problems that in the prior art, operation is complex, consumed time is long, efficiency is low, maintenance is increased, and cost and potential safety risks are increased are solved. Continuous polishing operation is achieved, the manual operation time is greatly shortened, and the overall polishing efficiency and reliability are improved.
Owner:SHAANXI JXTT MATERIAL TECH CO LTD

A method for removing a remelt layer of an electro-machined complex profile

ActiveCN121447492BVisual inspectionAbrasive flow machining
This invention discloses a machining method for removing remelted layers from complex surfaces using electrical discharge machining (EDM), comprising: detecting the geometric dimensions and surface roughness of the part after EDM to obtain first geometric dimension data and first roughness data; performing metallographic analysis on the part after EDM to detect the residual thickness of the remelted layer and obtain first remelted layer thickness data; assembling the part after EDM into an abrasive flow tooling that matches the part after EDM; performing abrasive flow machining on the part after EDM using an abrasive flow device under set abrasive and machining parameters to remove the remelted layer; cleaning the residual abrasive on the part and cleaning the part; detecting the geometric dimensions and surface roughness of the part after abrasive flow machining to obtain second geometric dimension data and second roughness data; performing metallographic analysis on the part after abrasive flow machining to detect the residual thickness of the remelted layer and obtain second remelted layer thickness data; and comparing and analyzing the remelted layer removal effect based on the first remelted layer thickness data and the second remelted layer thickness data. The purpose of this invention is to solve the problems of inconsistent remelted layer residue on the surface of parts caused by manual clamping, the risk of dimensional deviation, and inconsistent visual inspection results, and to avoid fatigue failure caused by intergranular corrosion on the surface of electrical discharge machining surfaces under high temperature and high centrifugal load conditions.
Owner:AECC AVIATION POWER CO LTD

Abrasive grain flow processing machine tool abrasive cylinder cooling device

The application discloses a cooling device for an abrasive cylinder of an abrasive flow processing machine tool, which is characterized by comprising a heat dissipation water tank and a temperature control device. The heat dissipation water tank is similar in structure to a hollow sleeve and is tightly attached to the outer wall of the lower abrasive cylinder, and a cooling liquid is circulated in the flow channel. When the abrasive cylinder is working, the cooling liquid continuously flows. When the temperature is too high, the cooling system starts to work, and the heat is taken away through the circulation of the cooling liquid, so that the temperature of the abrasive in the abrasive cylinder is controlled, thereby solving the problem that the abrasive temperature cannot be effectively reduced during the traditional abrasive flow machine tool processing. In addition, a cooling pipeline is arranged above the lower abrasive cylinder and is integrated with the cooling water tank. The cooling pipeline is in the shape of a cross, a Y shape or a straight line, is grooved and is provided with the cooling liquid. When the machine tool is working, the abrasive directly contacts the cooling pipeline, and the heat exchange is further enhanced, so that the purpose of controlling the abrasive temperature is achieved. The application can effectively reduce the temperature in the abrasive cylinder and ensure the processing performance of the abrasive, and has a significant influence on the processing effect of the machine tool.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Multi-outlet adjustable abrasive flow tool for 3D printing valve body runner polishing

The invention is applicable to the technical field of abrasive flow machining, and provides a multi-outlet adjustable abrasive flow tool for 3D printing valve runner polishing, which comprises a base, a storage bin, a feeding pipe, a feeding motor, a tool plug, a valve, a tool plug, a tool pressing plate, a tool pressing plate shaft, a tool pressing plate gear, a gear motor, an abrasive recovery tank, a recovery pipe and a recovery motor. The storage bin is fixed to the base, one end of the feeding pipe is connected with the storage bin, the other end of the feeding pipe is provided with a plurality of outlets, and the outlets are connected with the valve body abrasive inlets through tool plugs. A feeding motor drives grinding materials to flow, a tool plug blocks an outlet of a non-machining runner of a valve body, a tool pressing plate is installed in a cavity of the valve body and fixed to a tool pressing plate shaft, the tool pressing plate shaft is connected with a tool pressing plate gear, and a gear motor drives the gear to operate so as to adjust the pressing plate. The problems that abrasive particles are not evenly distributed in a complex runner, and machining dead angles exist can be solved, the quality of the inner wall of the valve body and the machining efficiency are improved, the sealing performance and the adaptability are good, and the tool assembling and disassembling steps are reduced.
Owner:JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA

Method for removing burrs from tiny holes

The present invention provides a method for removing micropores and micropore burrs, comprising: step S1: preliminary cleaning of burrs at the micropore outlet of a part; step S2: grinding the surface of the micropore outlet of the part to turn the originally raised burrs inside the hole, below the surface of the micropore outlet, thereby weakening the adhesion between the burr root and the part; step S3: polishing and cleaning the ground surface; step S4: using an abrasive flow to process the part to completely remove the burrs turned inside the hole; and step S5: cleaning the abrasive flow abrasive inside the micropore of the part. The present invention combines grinding and abrasive flow processing methods to maintain the sharp edge of the hole mouth while completely removing the micropore burrs; significantly improving processing efficiency compared to the manual deburring currently used in the industry.
Owner:SHANGHAI INST OF SPACE PROPULSION