142results about How to "Improve sharpness" patented technology

The invention provides a method for preparing a ceramic bond through solution heat preservation and a superhard grinding tool. The ceramic bonding agent prepared through a solution heat preservation method is fine in powder granularity and low in sintering temperature and contains a certain amount of crystals, the bonding agent has high impact resistance and self-sharpening performance due to existence of the crystals, and the prepared superhard ceramic grinding tool has the performance of high strength and good sharpness. The method has the advantages of short binding agent preparation period, low equipment investment cost, simplicity in operation and the like. The preparation method of the ceramic bond provided by the invention is not reported.

The invention relates to the technical field of protective fabric processing, and discloses high-performance protective fabric production cutting equipment which comprises a base and conveying rollers, the conveying rollers are symmetrically and rotationally connected to the interior of the base, a conveying belt is in transmission connection between the two conveying rollers, and a supporting plate is fixedly connected to the outer side of the base; a sliding mechanism is arranged in the supporting plate; due to the fact that the cutting edge of the cutting blade is located in the V-shaped groove in the surface of the grinding groove block, and the two sides of the cutting edge of the cutting blade are attached to the inner wall of the V-shaped groove of the grinding groove block, when the grinding groove block synchronously and horizontally slides along with the grinding sleeve, the two sides of the cutting edge of the cutting blade can be rubbed through the friction effect of the grinding groove block; and when the stable pressing plate is reset, the two sides of the cutting edge of the cutting blade are rubbed in a reciprocating circulation mode through the grinding sleeve and the grinding groove block, so that the surfaces of the two sides of the cutting edge of the cutting blade are smoother and smoother, and the sharpness of the cutting edge of the cutting blade can be improved.

The invention belongs to the technical field of optical adjustment, and particularly relates to a multimedia interactive teaching machine which is characterized in that replacement modules are symmetrically arranged at the bottom end of a display, a cleaning module is arranged at one side end of the display, a dustproof module is arranged at the other side end of the display, and an adjustment module is arranged between the replacement modules; according to the invention, dual cleaning operations of scraping and wiping are carried out on the display screen through the angle shovel and the anti-static sponge, so that the cleanliness of the display screen can be fully ensured; in the process, the board dust cabin is used for specifically adsorbing the dust overflowing in the scraping process of the corner shovel, and the dust is collected by the dust collecting pipe, so that the dust-free property of the teaching environment is improved; besides, in a non-teaching state, the roller shutter can be pulled out step by step through the adsorbability between the closing strip and the iron plate until the screen of the display is completely covered, so that the screen of the display is protected from the outside in a separated manner, the short circuit phenomenon of the display is fully reduced, and meanwhile, the display definition of the display is improved.

The invention relates to the technical field of knife sharpeners, and particularly discloses a knife sharpening mechanism capable of adjusting the knife sharpening angle and an electric knife sharpener, an angle adjuster, a support, a driving wheel, driven wheel sets and an abrasive belt, the driving wheel is arranged at the bottom in the support, the driven wheel sets are symmetrically arranged at the upper end in the support, and the driven wheel sets are arranged at the position obliquely above one side of the driving wheel at the lower end of the support; the abrasive belt is arranged on the driving wheel and the driven wheel set in a sleeving mode, the abrasive belt is driven by the driving wheel to rotate to grind the cutter, and the angle adjuster is arranged at the front end of the support to adjust the grinding angle of the cutter so as to meet the grinding requirements of different cutters. A tensioning mechanism is arranged, a spring is arranged on a guide rod in a sleeving mode and located between a wheel frame and a fixing plate, in this way, the force of the spring acts on the wheel frame, a tensioning wheel is made to be tightly attached to the abrasive belt, and the abrasive belt has certain tension.

The invention provides a diamond trephine which comprises a steel base body and a tool bit, the tool bit comprises the following raw materials in percentage by weight: 50%-60% of superfine iron-nickel pre-alloy powder, 15%-30% of superfine copper powder, 2%-5% of tin powder, 15%-30% of superfine tungsten carbide powder, 5%-10% of yttrium oxide powder and the balance of diamond raw materials, and the diamond raw materials comprise the superfine iron-nickel pre-alloy powder, the superfine copper powder, the tin powder, the superfine tungsten carbide powder, the yttrium oxide powder and the diamond raw materials. The trephine is characterized in that the trephine comprises a steel base body, the steel base body is provided with a plurality of tool bits, the tool bits comprise 3%-6% by volume of yttrium oxide powder and 15%-50% by volume of diamond, the granularity of the tool bits is 400-700 microns, one faces of the tool bits are arranged on the steel base body at intervals through laser welding, the other faces of the tool bits are provided with U-shaped grooves, and the two side faces of the tool bits are further provided with V-shaped grooves. The method specifically comprises the steps of burdening, mixing, coating, cold press molding, hot press sintering, laser welding and the like. According to the trephine, the cutting speed of the trephine can be effectively increased, the service life of the trephine can be effectively prolonged, the U-shaped groove and the V-shaped groove are formed in the tool bit, the contact area between the tool bit and a cutting material is reduced, friction cutting resistance is reduced, and the chip removal capacity and sharpness of the trephine can be obviously improved.

The invention discloses a novel method for preparing a metal-based corundum edge grinding wheel through an infiltration method. The method comprises the following steps that S1, titanium powder, aluminum powder and carbon powder are subjected to granulation treatment; s2, performing titanium plating treatment on the surface of the diamond; s3, uniformly mixing all the components by using a three-dimensional mixer; s4, the blank is subjected to infiltration sintering; s5, the sintered diamond tool bit is subjected to edge grinding, and a diamond edge grinding wheel is obtained after welding; and S6, edging and paint spraying treatment are conducted, and the finished edge grinding wheel is obtained. The service time of the diamond edge grinding wheel prepared through the infiltration method ranges from 120 h to 150 h. And the grinding cost and the polishing line energy consumption are greatly reduced, pollutant discharge is reduced, and considerable economic benefits and society can be brought.

This invention discloses a differential VGA signal decoding and display device, relating to the display field. It includes a signal input module, an ESD protection module, a differential receiving module, a synchronization separation module, an image decoding driver module, a display module, an audio processing module, and a control module. These modules are interconnected and work together to decode, process, and display differential VGA signals. This differential VGA signal decoding and display device solves the problems of short transmission distance, weak anti-interference capability, limited resolution, and high power consumption associated with traditional VGA interfaces. It also achieves full compatibility with traditional VGA devices, integrating audio processing, local playback, intelligent signal enhancement, and remote monitoring and management functions. It achieves reliable conversion from analog to differential signals, supports high-definition display, and has a transmission distance of up to 50 meters, while maintaining full compatibility with traditional VGA devices. This technology is particularly suitable for professional fields such as industrial automation and medical imaging, meeting the diverse display and intelligent operation and maintenance needs of professional scenarios.

The utility model discloses a knife sharpener with a rolling guide mechanism, which comprises a main machine body, and a knife sharpening blade is arranged above the main machine body; the guide mechanism is arranged on one side of the sharpening blade and comprises a roller rotationally mounted above the main machine body; according to the knife sharpener, the rolling guide mechanism is arranged on the knife sharpener, a knife body of a knife abuts against the outer side face of the rolling wheel, a cutting edge of the knife abuts against the knife sharpening piece, the rolling wheel rolls to assist the knife in sharpening the knife, and the problems that a traditional knife sharpener lacks accurate guide and is large in grinding resistance are effectively solved by arranging the rolling guide mechanism on the knife sharpener. When the cutter body abuts against the outer side face of the roller and the blade of the cutter abuts against the cutter sharpening piece, the roller rolls to assist the cutter in sharpening the cutter. Wherein the roller provides stable guidance, so that a user can keep a consistent sharpening angle, the sharpening resistance is obviously reduced, and the sharpening efficiency and effect are improved.

This invention discloses a roughing and finishing integrated turning insert, belonging to the technical field of metal cutting tools, comprising a cutting section and sidewalls. The cutting section forms multiple cutting zones, including a sequentially connected tip area, a first cutting zone, a second cutting zone, and a third cutting zone. By dividing the cutting section into multiple cutting zones, the insert forms a spatially varying structure with progressively decreasing sharpness and structural strength. The insert exhibits a characteristic where the edge sharpness gradually decreases in the positive direction, while the edge strength and impact resistance gradually increase. This allows for a transition from high cutting force to high load-bearing capacity when different cutting zones are selected for different machining stages, enabling a single tool to cover all machining conditions from roughing to semi-finishing to finishing, fundamentally reducing tool change frequency and improving machining continuity and efficiency.

The application provides a superfine diamond ceramic bond tool bit and a preparation method and application thereof, relates to the technical field of grinding tools, and comprises a base material and a functional additive; the base material comprises the following raw materials in parts by mass: 10-30 parts of a ceramic bond, 50-70 parts of diamond abrasive, 1-20 parts of a filler and 1-20 parts of a nano polishing agent; wherein the diamond abrasive is an irregularly shaped diamond aggregate; the functional additive comprises a temporary binder and a dispersing agent, the temporary binder accounts for 1-10% of the total mass of the base material, and the dispersing agent accounts for 1-10% of the total mass of the base material. The superfine diamond is not caused to agglomerate in the mixing process by changing the mixing mode of the diamond and introducing the diamond in the form of an irregularly shaped diamond aggregate, and the surface roughness of a workpiece is greatly improved by adding a spherical nano polishing agent, and the process is simple, controllable and stable.

The invention discloses a honeycomb go chessboard with color grid stickers, and relates to the technical field of sports equipment, each flat-bottom chess groove at the intersection of 361 grid lines of the honeycomb go chessboard is provided with a color grid sticker, the size of the color grid stickers is consistent with that of the chess grooves, chessboard grid lines and color patterns are printed on the color grid stickers, and the 361 color grid stickers integrally form a picture. A user can personally customize the color grid paste patterns of the honeycomb go board, and the go board has the personalized setting function of the user. The color grid stickers can increase the sharpness of the chess grooves on the honeycomb surface of the chessboard, so that a part of disabled people can learn go and play chess with normal people.

The utility model discloses a kind of anti-deformation diamond saw blades, including base, the rim of base is provided with multiple circumferential array distribution plane, the surface of each plane is provided with two symmetrically distributed insertion cavities, the surface of base is provided with the through hole of insertion cavity, the insertion cavity is inserted with the insertion plate in each, the both sides of insertion plate are located in the through hole and are provided with lug, the surface of lug is provided with wear strip.The utility model is provided with wear strip, so that the both sides wear strip of base are projected from the surface of base, reduce the friction between base and the object to be cut, avoid the phenomenon of "clamping saw", prevent the deformation caused by the wear of base side at the same time, high-quality cut surface can be obtained by using the good grinding property of superfine abrasive.

The utility model discloses a kind of rubber roller surface processing device, including processing box;One end inside the processing box is equipped with fixed mechanism, the end of fixed mechanism away from inside the processing box is equipped with auxiliary support mechanism, the inner top of processing box is equipped with cooling mechanism, the side of processing box inner wall is equipped with driving mechanism, the moving end of driving mechanism is equipped with motor, the output end of motor is equipped with conversion plate;The utility model is cooperated by motor, conversion plate, coarse wheel component and fine wheel component, can drive conversion plate rotation by motor work, make coarse wheel component contact with rubber roller outer surface, can remove rubber roller surface burr and macroscopic error by coarse wheel component work, by motor driving conversion plate rotation, make fine wheel component turn to rubber roller side, continue to carry out fine grinding finishing to rubber roller, without shutdown disassembly replacement wheel group, to improve overall processing efficiency, in turn, it is favorable to device to process and handle rubber roller.

The utility model discloses a kind of outer hexagonal nut machining chip removal mechanisms, it is related to nut production technical field, including chassis, the middle fixed connection of chassis is limit sleeve one and limit sleeve two, the inner side wall of limit sleeve one is rotatably connected with rotating shaft one, the inner side wall of limit sleeve two is rotatably connected with rotating shaft two, in the utility model, three blades of processing tool cantilever after cutting outer hexagonal nut, its surface is easy to adhere to chip, if not cleaning can reduce blade sharpness and processing accuracy.Arc cover one is rotated 120 degrees in the range after corresponding blade leaves workpiece, airflow generated by axial fan is guided through arc cover two, when passing through the gradually narrow passage between the conical plate on the supporting plate, flow rate is enhanced, can efficiently blow off chip on blade, ensure that blade always maintains good sharpness, to ensure the accuracy of subsequent outer hexagonal nut polishing, reduce the processing error caused by chip residue, improve the stability of product quality.

The invention belongs to the technical field of cutting tools, and particularly relates to a drilling and reaming integrated inner-cooling forming tool for machining automobile parts, which comprises a drilling section, a clearance section, a reaming section and a clamping section which are connected together in sequence and are all cylinders, and the diameters of the drilling section, the clearance section and the reaming section are the same. The diameters of the three are smaller than the diameter of the clamping section; the drilling section comprises a drill tip part and a cutting part, the drill tip is in an E shape, a chisel edge is arranged on the drill tip, and two main cutting edges extending towards the outer wall of the cutting part are arranged at the two ends of the chisel edge. The spiral reaming blade is designed to be of a double-guide structure, the hole wall roughness of a valve plate workpiece after reaming and the design of a large first rear angle and a large second rear angle are guaranteed, the number of clearance of a rear tool face is increased, meanwhile, aluminum alloy machining heat is reduced, aluminum alloy flanging and burr damage are restrained, and machining quality is improved.

The utility model discloses a knife sharpener for a knife, and relates to the technical field of household appliances. The adjusting mechanism comprises a bottom shell and a top cover, the adjusting mechanism comprises a mounting block, an empty groove is formed in the mounting block, a movable block is arranged in the empty groove, a movable rod is arranged on one side of the movable block, and a rotating block is rotationally arranged at the other end of the movable rod. When the cutter is ground in the cutter grinding groove in a sliding mode, the contact face of the rotating block and the cutter acts, due to the spherical structure and the material characteristic of the rotating block, the rotating block can roll smoothly instead of generating sliding friction with the cutter, the physical principle that the resistance of rolling friction is smaller than that of the sliding friction is ingeniously utilized in the design, and meanwhile the cutter grinding effect is greatly improved. The original sliding friction between the cutter and the inner wall of the cutter sharpening groove is changed into rolling friction between the cutter and the rotating block, so that the resistance of the cutter in the sliding process is obviously reduced.

The invention belongs to the technical field of hard and brittle material processing, and relates to a drill bit and tool bit composition, a tool bit and a preparation method and application thereof. The drill bit and tool bit composition comprises matrix components and diamond, and the matrix components comprise 40 wt%-60 wt% of superfine FeCoNi, 25 wt%-45 wt% of superfine Co, 10 wt%-20 wt% of superfine CuSn and 1 wt%-5 wt% of B4C. The particle size of the diamond is 100-200 [mu] m and / or 350-600 [mu] m, and the volume concentration of the diamond is 40%-60% and / or 15%-30%. The diamond with small granularity and large volume concentration is preferentially used as the outer layer, and the diamond with large granularity and small volume concentration is used as the inner layer, so that the drill bit tool bit has a three-layer structure formed by clamping the inner layer by the two outer layers. The three-layer structure and component design tool bit are adopted, the chip containing and discharging capacity is high, the sapphire machining efficiency can be effectively improved, and the surface quality of a machined sapphire crystal bar is improved. The tool bit is welded on a drill bit steel substrate and can be used for drilling and cutting sapphire, monocrystalline silicon, polycrystalline silicon, jade and the like, and the problems of low processing efficiency and short service life of a sapphire drill bit are solved.

The invention discloses a binocular stereo matching depth estimation method and system based on hyperspectral reconstruction feature enhancement. The method comprises the following steps: S1, receiving left and right binocular RGB images; s2, performing high-dimensional spectral feature reconstruction on the left binocular RGB image and the right binocular RGB image by using a multi-stage spectral transformation module, and outputting a multi-channel hyperspectral feature map covering a visible light wave band by learning spectral reflectivity priori of a material; s3, adaptive channel selection and feature recombination are carried out on the multi-channel hyperspectral feature map through a learnable spectrum dimension reduction layer, and a left pseudo-color feature map and a right pseudo-color feature map with enhanced material physical attribute differences are generated; and S4, performing geometric feature extraction and parallax iterative optimization based on the left and right pseudo-color feature maps by using a stereo matching module, and outputting a final compact parallax map. According to the method, optical physical priori is learned through model training, so that low-cost RGB hardware can reproduce high-fidelity spectral features, and the problem of depth perception under complex materials and extreme shadows is effectively solved.

The invention discloses a mirror light edging method for a deep-color cutter face of a cutting type cutter, which comprises the following steps: S1, the cutter is pretreated, so that the cutter face is a colored cutter surface from light gray to black and even colored; s2, the tool is edged from coarse to fine through grinding materials with different fine degrees; and S3, after edging, a multi-leaf leather wheel, a soft leather wheel or a cotton cloth wheel is combined with polishing wax, burrs at the edge point are swept away, and the edge face is polished to form a highlight mirror face. The invention further discloses a cutter manufactured through the mirror light edging method for the dark cutter face of the cutting type cutter. The sharpness and the lasting sharpness of the cutter are improved.

The invention discloses a method and a system for machining a female die of a special-shaped blanking die. The method comprises the following steps: machining an inner hole and a maximum outline excircle of a hollow cylinder by utilizing a numerical control lathe; the two end faces of the machined hollow cylinder are polished so that the two end faces of the hollow cylinder can be parallel; the outer wall of the hollow cylinder is milled with the ground bottom face of the hollow cylinder as the standard, a conical face cutting edge is obtained, and the conical face cutting edge is located on one side of the hollow cylinder; the milled hollow cylinder is subjected to vacuum quenching and ice-cooling treatment; and the two end faces of the hollow cylinder subjected to ice-cooling treatment are finely ground through a surface grinding machine. According to the method, through a numerical control turning procedure, when the inner shape of the cutting edge of the female die is machined, allowance is reserved, the wall thickness of the cutting edge of the female die is indirectly increased, the strength of the cutting edge is guaranteed, and the quality and the machining precision of the taper of the cutting edge machined by a numerical control coordinate grinding machine are guaranteed; and in the heat treatment process, the quenching hardness of the material is improved, so that the female die has higher hardness, and the sharpness and the wear resistance of the cutting edge are improved.

The invention relates to the technical field of medical suture needle surface treatment, and particularly discloses a martensitic stainless steel suture needle, a preparation method thereof and an ion nitriding tool for the suture needle. The martensitic stainless steel suture needle comprises a needle tail, a needle body and a needle tip, the preparation method comprises the following steps: processing and molding the martensitic stainless steel wire, and polishing to obtain the suture needle with the needle tip, the needle body and the needle tail; the suture needle is placed in the ion nitriding tool for the suture needle, the needle tip of the suture needle is inserted into the nitriding hole, the needle tail is inserted into the limiting hole, and a tool for assembling the suture needle is obtained; and after a tool for assembling the suture needle is subjected to surface nitriding treatment in the environment of nitrogen and hydrogen, the suture needle is cleaned and dried, and the martensitic stainless steel suture needle subjected to surface nitriding treatment is obtained. According to the preparation method of the martensitic stainless steel suture needle, the hardness and sharpness of the suture needle are remarkably improved, the contradiction between high hardness and high toughness of the suture needle is solved, and the applicability of the suture needle is favorably expanded.

The utility model discloses a high-stability ultra-sharp bone file, which belongs to the field of medical instruments and comprises a bone file body and a handle connecting part, chip removal grooves are arranged on the surface of the bone file body in a staggered manner, tooth tips formed by staggered tracks of the chip removal grooves are cutting edges, and bevel edges on two sides of each cutting edge are cutting edges; the handle connecting part is arranged at the upper end of the bone file body, the handle connecting part is provided with two end faces, one end face is a parallel end face, the other end face is an inclined end face, an end face clamping groove is formed in the parallel end face, and a protruding cylindrical clamping piece is arranged on the inclined end face. According to the bone file, the cutting edge is sharp enough, the chip containing capacity is improved, accumulated chips can be conveniently taken out from a medullary cavity when the tool is pulled out, the medullary cavity can be conveniently cleaned, the bone file is used more smoothly, the annular groove reminds an operator of the driving depth in the process of using the bone file, and the accuracy of an operation is improved.

The utility model relates to a tool sharpener head fixing frame which comprises a mounting plate which is of a rectangular structure, and a grinding mechanism is fixedly mounted at the upper end of the front side face of the mounting plate and used for grinding a cutting edge of a tool. The positioning mechanism is fixedly mounted at the lower end of the front side face of the mounting plate, a positioning hole is formed in the middle of the positioning mechanism, and the lower end of the polishing mechanism penetrates through the positioning hole. The telescopic mechanism is fixedly mounted in the middle of the rear side face of the mounting plate and can drive the grinding mechanism to move front and back to adapt to the cutter edge radian of the cutter. Through the linkage design of the telescopic mechanism and the positioning mechanism, the grinding mechanism can dynamically adjust the front-back movement track along with the radian of a tool edge, so that the grinding head automatically forms an arc-shaped movement path and is accurately attached to a blade curve, and the problem that the radian area is not fully machined due to traditional linear grinding is effectively solved; and the uniformity and sharpness of the blade are obviously improved.

The invention provides a super-sharp ceramic tile cutting disc which comprises a base body and a cutting part located on the edge of the base body, and the cutting part comprises, by weight, 65-80 parts of diamond particles, 10-25 parts of an iron pentacarbonyl compound, 35-55 parts of a binding agent and 30-40 parts of copper-coated carbon with the particle size being 0.5-0.6 mm. According to the super-sharp ceramic tile cutting disc, the copper-coated carbon compound is applied, so that the cutting efficiency is improved; copper-coated carbon and diamond particles are combined more firmly, the cutting efficiency is higher, the edge breakage effect of the ceramic tile is effectively improved, the iron pentacarbonyl compound is applied and serves as a catalyst, so that the combination is firmer, the hardness is effectively improved, paraffin is gradually burnt in the sintering process, pores are formed, diffusion channels are provided by the pores, and the service life of the ceramic tile is prolonged. By means of the method, atoms or molecules among particles can be migrated more easily, combination among the particles is promoted, along with rising of the sintering temperature, pores begin to be closed gradually, the contact area among the particles is increased, the particles begin to be rearranged, and the abrasion resistance and hardness are effectively improved.

The invention discloses a preparation method of a diamond grinding wheel for wafer Notch groove grinding, which comprises the following steps: various raw materials of the diamond grinding wheel are obtained according to a preset formula, the various raw materials comprise a diamond grinding material, metallic bond powder and an additive, and the additive comprises one or more of ceramic powder and resin powder; mixing the various raw materials to obtain a mixed material; the grinding wheel base body is put into a mold, and the mixed material is put into the mold, so that a mold with a grinding wheel green body is obtained; the mold with the grinding wheel green body is subjected to hot pressing sintering and heat preservation, then the mold is detached, and a grinding wheel blank is obtained; and the grinding wheel blank is machined and trimmed, and the diamond grinding wheel is obtained. According to the diamond grinding wheel prepared through the method, ultra-precision grinding machining of a wafer Notch groove can be achieved, the service life is prolonged, and the machining precision is improved.

The utility model relates to the technical field of hydraulic engineering, in particular to an aquatic plant cleaning device which comprises a fixing plate, a rotating rod rotationally connected to the side face of the fixing plate, a blade fixedly connected to the outer surface of the rotating rod, a worm wheel fixedly connected to the side end of the rotating rod, a driving motor installed at the top of the fixing plate, and a worm fixedly connected to the output end of the driving motor. The worm is arranged on the side face of the worm gear and meshed with the worm gear, and the driving motor is sleeved with a waterproof sleeve. Through cooperative use of a worm, a worm gear, a driving motor, a rotating rod, a blade, an air pump, a connecting pipe and an air spraying hole, the worm can be driven to rotate through the driving motor, the blade is driven to rotate through the meshing effect between the worm and the worm gear, and aquatic plants can be cut up and treated through rotation of the blade; and meanwhile, air can be sprayed out from the connecting pipe through the air spraying holes, so that crushed grass attached to the surfaces of the blades is removed, the sharpness of the surfaces of the blades is improved, and the aquatic plant treatment efficiency is improved.

The present application discloses a PCD grinding head with grinding teeth, comprising a grinding head base and a grinding head fixedly connected; wherein a chip chamber is provided inside the grinding head, and a chip groove is provided on the outer surface of the chip chamber; the chip groove is connected to the chip chamber; the end of the grinding head is composed of a plurality of grinding teeth; the grinding teeth include tooth edges and tooth grooves arranged alternately; the grinding head base is made of cemented carbide material, and the grinding head is made of PCD material. The grinding head provided in the present application processes the end face of the entire PCD grinding head into a cutting edge with a certain angle, and designs the end face into a grinding tooth structure. On the premise of enhancing its own strength and wear resistance, it can also improve the grinding sharpness of the grinding head, and can also prevent slipping between the grinding head and the product to be processed, and has high hole grinding efficiency and quality.

The utility model belongs to the technical field of precision machining, and particularly relates to a gear type PCD trimmer. The gear type PCD trimmer comprises a supporting base body, a gear-shaped PCD piece and a reinforcing ring which are arranged in a split mode, gear teeth matched with the gear honed by the honing wheel are arranged on the supporting base body in the circumferential direction, and a gear shaft is integrally formed on the supporting base body. A central hole coaxially matched with a gear shaft is formed in the gear-shaped PCD piece, the gear-shaped PCD piece is tightly attached and fixed to the end face of the supporting base body and provided with dressing teeth which correspond to gear teeth one to one and are matched with the gear teeth in shape, and the dressing teeth are used for being meshed with the honing wheel to grind and dressed the honing wheel; the reinforcing ring is fixedly arranged on the gear shaft in a sleeving mode and fixedly attached to the gear-shaped PCD piece. The aluminum profile is low in manufacturing difficulty, high in strength and long in service life.

The present application relates to the technical field of diamond saw blade, and particularly relates to a matrix powder for diamond saw blade and a diamond saw blade. The matrix powder comprises, in mass percentage, metal elements, iron-based pre-alloy powder, high-thermal-conductivity micro powder, and inevitable impurities; wherein the metal elements are selected from at least one of Fe, Sn, Cu and Ni; the iron-based pre-alloy powder is selected from an iron-based pre-alloy powder containing Fe and at least two of Cu, Ni, Co, Sn and P; and the high-thermal-conductivity micro powder is selected from a copper-tin alloy or a tungsten-copper alloy. The diamond saw blade comprises a steel base and a diamond cutter head, the diamond cutter head comprises a working layer and a transition layer; the transition layer is made of the above-mentioned matrix powder, and the working layer is made of the above-mentioned matrix powder and diamond. By adopting the synergistic design of the multi-layer matrix structure and the high-thermal-conductivity micro powder material, the peak temperature of the local chip groove of the multi-layer structure is greatly reduced.

The invention discloses an enamelled wire surface paint retreatment process, and relates to the field of enamelled wire production. The invention relates to an enameled wire surface paint retreatment process, which comprises the steps of waste enameled wire screening, waste enameled wire paint removal, copper wire drawing and wire rod processing, the depainting step specifically comprises the steps that the waste enameled wire passes through a first wire-drawing die with the two ends turned over, the diameter of the input end of the turned first wire-drawing die is smaller than that of the output end, a depainting hole with the same diameter as the copper wire of the waste enameled wire is formed in the first wire-drawing die, the first wire-drawing die conducts depainting treatment on the waste enameled wire, and the copper wire is obtained; in the wire drawing step, a second wire drawing die is placed according to the initial state, the diameter of the input end of the second wire drawing die is larger than that of the output end, the copper wire is subjected to wire drawing through the second wire drawing die, and the copper wire is extruded and drawn through the multiple second wire drawing dies with the output end diameters sequentially reduced to obtain a wire. The technology for removing the paint film on the surface of the enameled wire and recycling the copper wire is low in cost.