811 results about "Surface smoothness" patented technology

A graphene composite nanoparticle abrasive flexible fluid electric field-ultrasonic auxiliary polishing method comprises the following steps that S1, primary chemical bonding and graft copolymerization of graphene and nanoparticles are achieved through a dynamic high shear field-ultrasonic synergistic induction method; and then compounding the primary abrasive material and the secondary graphene into the graphene composite nano-particle abrasive material of a multi-layer structured coating system with a core-shell structure through a dynamic high shear field-ultrasonic synergistic induction method. S2, arranging and moving of the particles on the surface are adjusted by applying an electric field; s3, ultrasonic waves are applied in the polishing process, contact between particles and the surface is improved, and surface defects are removed; and S4, the micro state of the abrasive particles and the surface state of the workpiece in the polishing process are tracked. The invention further provides a device for implementing the method. The polishing precision, the surface smoothness, the polishing speed and the polishing uniformity are improved, and the energy consumption is reduced; the polishing consistency and stability are improved, the machining cost is reduced, and the rejection rate is reduced.

An additive manufacturing method based on micro-selective laser melting technology. By using a spot size of 30 μm or less, a metal powder layer thickness of 10 μm or less and ultrafine metal powders having a D90 particle size of 30 μm or less, and in combination with the control of a scanning laser power, a scanning rate, a linear energy density and a volumetric energy density within specific ranges, the method can print complex-structured metal parts having extremely high resolutions and surface smoothness, and can obtain a high-density internal structure of a component even under a relatively low energy density or power condition, thereby effectively protecting an optical system. Moreover, a printed component exhibits a defect-free microstructure, and has excellent electrical properties, thermal properties and mechanical properties. Particularly, ultrafine grains and a high dislocation density provide superior mechanical properties compared to conventional manufacturing materials. An infrared laser device can be used, thereby achieving low costs.

The invention provides a secondary sizing agent as well as a preparation method and application thereof. The secondary sizing agent comprises the following components: a main film-forming agent, an auxiliary film-forming agent, a lubricant, a silane coupling agent and water, wherein the main film-forming agent is an aqueous epoxy solution, the auxiliary film-forming agent comprises a low molecular weight epoxy emulsion and an aqueous polyurethane emulsion, and the lubricant comprises an organosilicon lubricant and an ionic lubricant. In the scheme, the secondary sizing agent formed by mixing the main film-forming agent, the auxiliary film-forming agent, the lubricant and the silane coupling agent with proper types and proper contents can endow the silicon carbide fiber with excellent wear resistance, folding resistance and mechanical properties. Compared with one-time sizing, the number of times of wear resistance of the fiber yarn is increased by more than 10 times, the yarn breaking rate in the fabric processing process is greatly reduced from 10% to 0.5%, the surface smoothness of the prepared fiber fabric is greatly improved, the performance of the composite material prepared through the impregnation method is integrally improved, the bending strength is obviously improved, and the performance requirement of the three-dimensional fabric can be completely met.

The present disclosure provides high bulk tissue products, as well as an apparatus and methods for manufacturing the same. The tissue products provided herein not only have high bulk, but they also have improved surface smoothness, particularly compared to tissue products of similar basis weights.

Methods and systems for coating metal substrates are provided. The methods and systems include sequential application of low flow and high flow powder coatings followed by a single heating step to provide a cured coating. The methods and systems include a marker that allows coating uniformity to be monitored and assessed during application. The described methods provide coatings with optimal surface smoothness and edge coverage.

The invention belongs to the technical field of grinding equipment, and particularly relates to a welded pipe mold cambered surface smoothness accurate grinding device which comprises a workbench, a fixing assembly is arranged on one side of the upper end of the workbench and comprises two first circular plates arranged at the upper end of the workbench in a sliding mode, and an accurate grinding assembly is arranged on one side of the fixing assembly. The accurate grinding assembly comprises an arc-shaped plate slidably arranged at the upper end of the workbench, the side, close to the first circular plate, of the arc-shaped plate is wrapped with abrasive paper, second rectangular strips are rotatably arranged at the two ends of the side, away from the abrasive paper, of the arc-shaped plate, and a third rectangular strip is arranged between the second rectangular strips. A fourth rectangular strip is fixedly connected to the end, away from the arc-shaped plate, of the third rectangular strip, a second rectangular hole is formed in the position, corresponding to the third rectangular strip, of the fourth rectangular strip, and the third rectangular strip is slidably arranged in the second rectangular hole. And the practicability is low.

The invention discloses an automatic surface smoothness detection device, which relates to the technical field of surface smoothness detection, and comprises an optical platform, the upper end face of which is provided with a strip-shaped positioning through hole; the wedge interference mechanism comprises a standard plane slide I and a workpiece clamping and positioning mechanism; the first standard plane slide is perpendicular to the upper end face of the optical platform. A clamping part of the workpiece clamping and positioning mechanism can clamp and move a to-be-detected workpiece, so that the to-be-detected workpiece horizontally corresponds to the standard plane slide I, an air wedge I with a preset included angle I is formed, and the to-be-detected workpiece can be driven to descend to penetrate through the strip-shaped positioning through hole; the CCD scanning mechanism comprises a light source part and a CCD scanning detection part; the light source part is mounted on the CCD scanning detection part; the sorting mechanism is located below the optical platform and corresponds to the strip-shaped positioning through holes so as to bear the workpieces to be detected and carry out classified conveying. The method can rapidly and accurately carry out automatic nondestructive detection on the surface smoothness of the workpiece to be detected, has relatively high detection efficiency and stability, and can meet the batch detection requirement.

The invention relates to the technical field of carbon materials, in particular to a preparation method and application of a heat conduction material and a maleic anhydride grafted graphene material.The preparation method comprises the steps that maleic anhydride and graphene are evenly mixed, and a prefabricated mixture is obtained; uniformly mixing the prefabricated mixture with a peroxy initiator, heating to react for a certain time, cleaning a product, and drying to obtain the maleic anhydride grafted graphene material. According to the preparation method, graphene is grafted with strong polar groups to serve as a connecting bridge between the graphene and a plastic matrix, so that the strong bonding capacity between the graphene and the plastic matrix is obtained, then the toughness, surface smoothness, breaking strength and other mechanical properties of the corresponding plastic heat-conducting composite material are improved, and meanwhile the heat-conducting property of the heat-conducting composite material is remarkably improved. In addition, maleic anhydride and graphene are directly mixed without the help of an organic solvent or a dispersing agent and the like, the process is simple and pollution-free, the environmental protection property is improved, and the complexity of the preparation process is reduced.

The invention relates to the technical field of intelligent manufacturing equipment, in particular to grinding equipment for plastic mold accessory production. Comprising a plurality of containing cavities evenly distributed in the circumferential direction and arranged on a base, the base is provided with symmetrically-distributed electric control push rods, telescopic parts of the symmetrically-distributed electric control push rods are jointly and fixedly connected with a fixing frame, a motor is installed in the fixing frame, and an output shaft of the motor is fixedly connected with a first gear; second gears which are evenly distributed in the circumferential direction are rotationally connected into the fixing frame, the number of the second gears is the same as that of the containing cavities, and a grinding roller is arranged in the base. The multiple guide columns are ground through the multiple grinding rollers at the same time, so that the grinding time and the grinding degree of the multiple guide columns on the same die are the same, and the situation that due to state fluctuation of the grinding rollers during one-by-one grinding, the surface smoothness difference of the multiple guide columns on the same die is caused is reduced, and the grinding efficiency of the guide columns and the quality after grinding are guaranteed through grinding.

The invention discloses an automobile part grinding control system, which relates to the technical field of automobile part grinding control, and ensures that a grinding tool always keeps an optimal focal length and an accurate position in an operation process by accurately controlling a first focusing instruction, a first translation instruction and a first rotation instruction. A strain sensor is introduced to monitor the deformation of the workpiece in real time, and the deformation can be found in time and compensated in real time in the grinding process. The system can optimize temperature control management for different workpiece materials by considering heat conductivity coefficients k and heat conduction factors Rczz of different materials. Multiple factors of stress distribution, heat conduction, cooling efficiency and surface smoothness are considered by integrating the grinding quality index Mzqs, the machining quality grade is generated after comprehensive evaluation is provided for the grinding quality, parameters including the grinding depth, the workpiece feeding speed and the cooling system are adjusted according to the grade result, and therefore the machining quality of the final workpiece is improved.

The invention discloses a metal mold aluminum alloy low-pressure casting device and method, and belongs to the field of low-pressure casting. The metal mold aluminum alloy low-pressure casting device comprises a base, the top of the base is fixedly connected with a crucible and a supporting column, the top of the supporting column is fixedly connected with a supporting table, the side wall of the crucible is communicated with an air injection pipe, and the top of the supporting table is fixedly connected with a bottom die; two semicircular side dies are symmetrically arranged on the front portion and the rear portion of the bottom die, an upper die is arranged on the tops of the two side dies, and a liquid rising pipe is fixedly connected to the top of the crucible; according to the invention, the problems of stress and deformation caused by overlarge temperature difference of the mold are reduced, the dimensional precision and surface smoothness of a product are maintained, the product quality is improved, the problem of cracks or deformation on the surface of the mold possibly caused by overhigh cooling speed is prevented, the service life of the mold is further prolonged, and the quality of a casting is further improved.

The invention discloses a preparation method of a high-precision small gear assembly, which comprises the following steps: S1, selecting metal powder, mixing the metal powder with a high-molecular binder in proportion, mixing and uniformly preparing a granulation feed, and finally performing quality inspection on the feed to ensure that the feed is suitable for a subsequent forming process; s2, after the granulation feed is added into an injection molding machine, temperature and pressure parameters are adjusted, it is ensured that the material uniformly flows into a mold, the high-precision mold is used, the dimensional tolerance is controlled within + / -3 micrometers, the material fluidity needs to be kept in the injection process to prevent defects, the mold is cooled after injection is completed, and the material is obtained; the gear manufacturing precision can be improved, the surface smoothness is improved, flaws are reduced, it is guaranteed that the product dimensional tolerance meets the national standard grade requirement, meanwhile, the defects and deformation of a finished product are reduced through strict process control, it is guaranteed that a gear assembly has the longer service life and the higher performance stability, and the gear assembly is suitable for batch high-precision manufacturing.

The utility model relates to the technical field of culvert construction, and discloses a culvert overall efficient pouring trolley which comprises a rail, the top of the rail is connected with a trolley hydraulic walking mechanism in a sliding mode, a bottom beam is arranged at the top of the trolley hydraulic walking mechanism, a first portal is arranged at the top of the bottom beam, and a second portal is arranged on the right side of the first portal. The first door frame and the second door frame are connected through a connecting beam. By means of the arrangement of the whole plastic steel formwork, gaps in the surface of the culvert are reduced, the gap processing time is greatly saved, the construction period is greatly shortened, due to the fact that the plastic steel formwork is light in weight, equipment is easier to move, and the problem that an existing formwork is made of a single formwork and made of steel, and the construction cost is low is solved. The existing culvert wall is small in area and heavy in weight, and needs to be combined with a plurality of templates, but gaps can be formed between the templates, so that the appearance quality problems of low surface smoothness, surface drawing marks and the like of the demoulded culvert wall are solved.

The invention discloses an ultrahigh-voltage direct-current shielding material and a preparation method thereof, and the shielding material is prepared from the following raw materials in parts by mass: 65-80 parts, preferably 70-80 parts, of matrix resin; 15 to 25 parts of carbon black-MXene-ionic liquid composite conductive agent, preferably 18 to 23 parts of carbon black-MXene-ionic liquid composite conductive agent; 0.2 to 5 parts of an antioxidant, preferably 0.5 to 2.5 parts of the antioxidant; 1-2 parts, preferably 1-1.5 parts, of a lubricant; 0.5 to 2 parts of cross-linking agent, preferably 0.8 to 1.2 parts of cross-linking agent. By introducing the MXene-ionic liquid modified superconductive carbon black, the conductive effect is improved, the use amount of the carbon black is reduced, and uniform dispersion of the conductive filler is realized, so that the generation of surface bulges is reduced, the surface smoothness of the shielding material is improved, and meanwhile, due to the synergistic conductive effect of the ionic liquid and MXene, the shielding material has good conductivity. The PTC effect of the shielding material is reduced; and the generation of space charges is reduced.

The invention relates to a continuous casting and rolling rapid processing technology of a medicine foil. The process comprises the steps of raw material preparation, smelting and refining, continuous casting, cooling treatment, heating and rough rolling, finish rolling, annealing treatment, surface treatment, slitting and the like. By controlling the smelting temperature, the casting speed, the rolling speed, the roller surface roughness, the annealing parameters and other process conditions, efficient production of the aluminum foil is achieved, and the surface smoothness, the thickness precision, the tensile strength and the ductility of the medicine foil are guaranteed. The thickness of the finished medicine foil is 0.02-0.04 mm, the tensile strength is 80-120 MPa, the ductility is not lower than 1.5%, and the surface roughness Ra value is controlled to be 0.1-0.3 micron. The process can produce high-quality medicine foil meeting the medicine packaging requirement, has the advantages of being efficient, stable, energy-saving and environment-friendly, and is suitable for large-scale industrial production.

The invention discloses a clamping and supporting tool for thin-wall parts, and relates to the field of clamping and supporting tools, the clamping and supporting tool comprises a box body part, a square inner groove is formed in the middle of one end of the box body part, a first clamping tool is arranged in the square inner groove, and the first clamping tool is of a frame type structure and is matched with the square inner groove in the box body part; a plurality of first inner grooves which are symmetrically distributed are formed in the peripheral wall of the first clamping tool, the first inner grooves are blind grooves, and clamping springs are fixedly installed at the bottoms of the first inner grooves; by means of the combined structure of a frame type / rod-shaped clamp, an elastic support and a process plate, traditional rigid clamping is replaced, clamping force can be evenly dispersed, plastic deformation during thin-wall part machining is effectively avoided, the size precision, shape tolerance and surface smoothness of parts are guaranteed, and the rejection rate of the parts is reduced; and meanwhile, damage to the inner wall caused by excessive supporting is prevented through the process plate (or the follow-up process plate), and the qualification rate of parts is further increased.

Methods and systems for coating metal substrates are provided. The methods and systems include sequential application of low flow and high flow powder coatings followed by a single heating step to provide a cured coating. The methods and systems include a marker that allows coating uniformity to be monitored and assessed during application. The described methods provide coatings with optimal surface smoothness and edge coverage.

The present invention discloses an inner ring smoothness processing device for gear processing, which specifically relates to the technical field of gear processing, and comprises a base, a control box is fixedly installed at the front end of the base, a shell is fixedly connected to the upper end of the base, a frame is fixedly connected to the upper end of the shell, a clamping and rotating assembly is arranged on the inner surface of the base, and a cleaning and polishing assembly is arranged on the upper inner surface and the upper end of the shell. The inner ring smoothness processing device for gear processing described in the present invention is provided with a revolution mechanism, a clamping mechanism and a rotation mechanism, so that the gear can realize automatic clamping operation during the rotation process, and when the gear revolves to a set angle, the gear can realize self-rotation and rotate together with the polishing component, which is helpful to realize uniform polishing of the inner ring, improve surface smoothness, reduce friction and wear, thereby improving the transmission efficiency of the gear, extending the service life, reducing noise and vibration, and improving the surface quality of the inner ring.

The invention relates to the technical field of optical processing, and provides a monocrystalline silicon aspherical lens and a numerical control polishing process thereof, a numerical control polishing machine is used for carrying out the main steps of rough polishing, fine polishing, fine trimming and the like, process parameters are adjusted according to the characteristics of monocrystalline silicon, and therefore the monocrystalline silicon aspherical lens with the diameter smaller than 320 mm can be polished. By means of a numerical control polishing machine tool, the optimized front surface type PV can reach 0.3 mu m or below, the surface smoothness can reach 40 / 20, and the method has reference significance for monocrystalline silicon aspherical lenses with the diameter of 320 mm or above.

The invention belongs to the technical field of heavy machine tool machining, and particularly relates to a transmission structure for heavy horizontal machine tool machining and a machining method. Comprising a moving seat, the two ends of the upper surface of the moving seat are fixedly connected with a tool apron and a skewness measuring assembly respectively, the skewness measuring assembly comprises a measuring tool connecting arm, the measuring tool connecting arm comprises a first measuring tool arm, one end of the first measuring tool arm is rotationally connected to a lifting seat and is in transmission connection with a stepping motor, and the stepping motor is fixedly connected to the lifting seat. The device can assist a wheel velocimeter in more conveniently and accurately measuring the rotating speed and the skewness of the outer surface of a turning billet in real time, and is more convenient for lifting a workpiece, so that cuttings generated in turning are reduced, and the cuttings are prevented from scratching the machined surface; built-up edges can be reduced, the surface smoothness is improved, and the surface roughness is reduced; and in the turning process, the turning speed is adjusted in real time along with the change of the shape and the quality of the machined steel blank so as to keep the optimal turning rotating speed.

The invention provides a preparation method of 3D printing ceramic slurry and a ceramic shaping method, and the preparation method of the 3D printing ceramic slurry comprises the following steps: S1, loading nano-scale silicon dioxide on the surface of micro-nano-scale aluminum oxide to obtain nano-silicon dioxide modified aluminum oxide; s2, coating the surface of the nano silicon dioxide modified aluminum oxide with aluminum hydroxide to obtain modified aluminum oxide; and S3, ball-milling and mixing the modified aluminum oxide and a dispersing agent, and then mixing and stirring with a binder, an auxiliary agent and a solvent. The 3D printing ceramic slurry provided by the invention can realize high solid content, has good dispersibility and fluidity, is strong in stability, is not liable to cause problems of layering, precipitation and the like, the surface smoothness of extruded silk threads is high, and a prepared ceramic product is high in strength.

The invention provides a large-size optical mold material for aspheric glass lens mold pressing, a preparation method of the large-size optical mold material and a large-size optical mold for aspheric glass lens mold pressing, wherein the large-size optical mold is made of the large-size optical mold material. The large-size optical mold material is formed by tungsten carbide and a sintering inhibitor through SPS sintering, the diameter of the large-size optical mold material is 100-200 mm, and the height of the large-size optical mold material is 10-100 mm; the fracture toughness of the large-size optical mold material is 7.4-7.5 MPa.m < 1 / 2 >, and the content of the sintering inhibitor is 0.1 wt.%-2 wt.%. The large-size optical mold material has the advantages of high density, high hardness, proper thermal expansion coefficient, favorable processability, excellent surface smoothness and uniform and consistent radial hardness, and is suitable for processing and forming a large-size optical mold for mold pressing of aspheric glass lenses.

The invention relates to the technical field of cable welding equipment, in particular to pre-refrigeration end heating cable connection section welding equipment and a welding process thereof.The pre-refrigeration end heating cable connection section welding equipment comprises a supporting frame, a guide rod, a welding mechanism and a clamping mechanism, the supporting frame is fixed to an external machine tool, the guide rod is vertically fixed in the supporting frame, and the welding mechanism is slidably connected to the guide rod; the two clamping mechanisms are arranged at the upper end and the lower end of the supporting frame, mechanical surrounding welding is achieved through the arrangement of the welding mechanism, current, voltage and welding speed can be adjusted in real time when a cable is welded, local overheating or insufficient penetration caused by manual operation is avoided, and the defects of incomplete penetration, undercut and the like of a weld joint are reduced; and meanwhile, through a 360-degree surrounding type welding path, uniform distribution of heat input is achieved, phase change or looseness of a magnesium oxide insulating layer due to local high temperature is prevented, the consistency of welding seams is effectively improved, and it is ensured that the size and surface smoothness of the welding seams meet the standard through programmed parameter setting.

Chemically treating ionically conductive sulfide glass solid electrolyte separators or separator layers can improve performance. In particular, treatment involving chemically etching a surface or surface region of the sulfide glass separator to blunt, lessen or remove edge defects or surface flaws, and / or to enhance surface smoothness is cost effective, reliable and well suited for high production environments compared to physical methods of removing scratches or smoothing surfaces, such as mechanical grinding and polishing.

The invention relates to the technical field of inspection climbing robots, in particular to a foot end component of an inspection robot and the inspection robot, and the foot end component of the inspection robot comprises a foot end shell, a suction cup unit, a sliding block and a telescopic rod. When the telescopic rods contract to drive the pull rods to slide away from the sucker bodies, the tops of the sucker bodies are driven to move towards the bottoms, and negative pressure cavities are formed between the sucker bodies and adsorbed objects. Due to the fact that the multiple suction cup units are arranged on the foot end component of the inspection robot side by side, each suction cup unit can independently suck the surface of the object closest to the sucked object, and it is guaranteed that the foot end component can suck the different surfaces or different radians of the sucked object; therefore, the foot end unit can still be stably adsorbed under the condition that the foot end unit has a certain radian or the surface smoothness degree is limited, climbing inspection is achieved through cooperation of different foot end components, and the application scene is expanded.

The invention relates to the technical field of post-processing of 3D printed parts, in particular to a universal coloring post-processing method for 3D printing. The method comprises the following steps: (a) preparing an organic solvent mixed dyeing solution; (b) preparing a 3D printed piece with a rough dye attachment surface on the surface; (c) dipping the 3D printed piece in an organic solvent mixed dye solution, and promoting coloring through physical and chemical effects; and (d) slightly dissolving the surface of the 3D printed piece by using an organic solvent to promote the sealing of surface micropores so as to fix the dye. The invention provides a general coloring post-processing method which is low in cost, high in efficiency, free of requirements on geometrical shapes of workpieces, higher in applicability to high-molecular 3D printed workpieces with various complex structures, and capable of improving the problem of uneven coloring of fine structures, improving the surface smoothness of products and improving the mechanical property and attractiveness.

To provide a curable composition which enables provision of a cured product having high strength and is suitable for a fiber-reinforced composite material, and a fiber-reinforced composite material which enables provision of a molded article excellent in film peelability, moldability and surface smoothness.SOLUTION: A curable composition contains an epoxy group-containing compound (A), a polyol compound (B) having a hydroxyl equivalent of 125 to 600 g / equivalent, a polyisocyanate compound (C), and a curing agent (D) for an epoxy resin or a curing accelerator (E) for an epoxy resin, wherein the compound (C) contains a first polyisocyanate compound (C-1) having an NCO group content of 33.0 mass% or more and a second polyisocyanate compound (C-2) having an NCO group content of 30.1 mass% or more and 32.9 mass% or less, 15 to 50 mass% of the compound (C-2) is contained, and an NCO / OH ratio is within a range of 1.2 to 3.0.SELECTED DRAWING: None

The utility model relates to the technical field of polishing detection, in particular to a piston rod polishing surface detection device which comprises a supporting body, a pushing plate, a motor support and a positioning rod, the supporting body is a U-shaped supporting frame, the pushing plate is parallel to the bottom face of the supporting body and is connected with two side plates of the supporting body in a sliding mode, and the motor support is fixedly installed on one side plate of the supporting body. The positioning rod is slidably connected to the upper surface of the motor support, the other side plate of the supporting body is rotationally connected with a hook-shaped rotating body, and an infrared detector is connected to the upper portion of the supporting body. According to the utility model, whether the surface smoothness of the piston rod is qualified or not can be detected only by inserting the hook-shaped rotating body into the positioning pin at one end of the piston rod to be detected, placing the piston rod to be detected on the pushing plate and operating each motor, the operation is convenient, and the detection is rapid and accurate.

The invention discloses a tension real-time feedback and slitting online monitoring system for a slitting machine, which belongs to the technical field of coiled material slitting and comprises a first guide roller group, a second guide roller group, a third guide roller group, a shearing mechanism and a polishing mechanism which are mounted on a fixing frame. The tension real-time feedback and slitting online monitoring system of the slitting machine further comprises a second mounting plate and a controller. The power of the first shearing roller is transmitted to the two sets of grinding assemblies through the first transmission belt, so that the multiple grinding parts of the two sets of grinding assemblies rotate synchronously, the top face and the bottom face of the coiled material obtained after slitting are ground, corners and burrs generated in the slitting process are removed, and the requirement of subsequent machining for the surface smoothness of the coiled material is met. The controller can be matched with the corresponding grinding rotating speed according to the burr conditions of different cut coiled materials, the situation that the coiled materials are damaged due to excessive grinding is avoided, and the defect that grinding is insufficient and residues exist is also avoided.

The utility model relates to an inner-row type trepanning cutter for deep holes, belongs to the field of deep hole machining, and solves the problems that an existing trepanning cutter is poor in machining linearity, severe in cutter abrasion, poor in machining surface smoothness and low in machining efficiency. The inner row type trepanning cutter for the deep holes comprises a circular-tube-shaped cutter crown, and the cutter crown comprises a cutter body mounting part; the four cutter body mounting parts are uniformly arranged on the cutter crown along the circumferential direction; and the outer wall of each cutter body mounting part is provided with an alloy guide key and a shock absorption damping block which are different in circumferential position and staggered in axial position. The trepanning cutter provided by the utility model has better machining linearity and coaxiality, higher machining precision and efficiency, capability of effectively ensuring the smoothness of an inner hole, and longer service life.