111results about How to "Reduce cutting resistance" patented technology

The invention relates to the field of sampling, in particular to a drilling and sampling device for road construction. The sampler comprises a frame and a sampling assembly arranged on the frame, the sampling assembly comprises a drilling cylinder and an inner cylinder, a plurality of drilling tools are hinged to the lower end of the drilling cylinder, the inner cylinder is coaxially inserted into the drilling cylinder, the inner cylinder is of a grating structure and comprises a first cylinder body and a second cylinder body, and a film is arranged in the inner cylinder. When a road surface part is drilled, the drilling tool is in a horizontal state, the contact area between the drilling tool and the road surface is large, large cutting supporting force can be kept, a drilling barrel is prevented from being stressed and deformed, when a roadbed part is drilled, the drilling tool is in an upright state, the contact area between the drilling tool and the roadbed is small, the cutting speed is increased, and the cutting efficiency is improved, so that different drilling requirements are met; meanwhile, when the roadbed part is cut, the inner cylinder is inserted into the roadbed in advance to support the roadbed, after drilling is finished, the thin film is pulled open to wrap the sample core, it is guaranteed that the distribution state of all layers of structures of the sample core is accurate, and the authenticity of the sample is guaranteed.

The invention relates to the technical field of machine tool intelligent machining, and discloses a machining method based on deep learning and multi-sensor fusion, which comprises the following steps: collecting data in the machining process of a numerical control machine tool, and preprocessing the data in the machining process of the numerical control machine tool to obtain a data set; inputting the obtained data set corresponding to the data acquired by the plurality of sensors into a Kalman filtering algorithm for Kalman recursive filtering processing to obtain fused actual observation data acquired by the sensors; inputting a data set corresponding to the fused actual observation data acquired by the sensor and the data acquired by the numerical control system into a depth Q network algorithm, and predicting to obtain an optimal tool path; a magnetic field is applied to the machined workpiece through the excitation module; and machining a machined workpiece model along the optimal tool path by adopting an ultrasonic tool high-frequency machining method. According to the invention, the surface quality of the to-be-processed workpiece can be obviously improved.

The invention provides a spiral fluted tap which is provided with a thick handle part, a neck part and a thick-head thread part which are coaxially arranged, the helical angle beta of the thread part is greater than 40 degrees; the groove profile of the thread part is of a three-groove structure and is in a straight-line three-arc form; the screw tap is made of a high-speed steel material subjected to vacuum heat treatment and subzero treatment and is subjected to passivation treatment. The technical problems that a spiral fluted tap is unsmooth in chip rolling and discharging, short in service life, prone to being broken, unstable in performance and low in working efficiency are solved. The cutter is beneficial to numerical control multi-line grinding machining, sharp in cutting, beneficial to tight chip rolling, long in service life, high in machining stability and high in efficiency.

The invention discloses a manufacturing method of an electromagnetic valve material with high corrosion resistance and easy cutting, which relates to the technical field of stainless steel and mainly comprises the following steps: melting in a heating furnace, AOD (argon oxygen decarburization) refining, LF (ladle furnace) refining, pouring, heat treatment, pretreatment, primary electroplating, secondary electroplating and finished product obtaining. And meanwhile, tin-bismuth alloy with specific content is introduced as a modifier for modification treatment, a slag former is added for refining and slagging-off, and the electromagnetic valve material which is good in corrosion resistance, high in strength and free of cutting is successfully prepared.

The invention discloses a novel method for machining a last blade lock notch groove through a planing and slotting machine, relates to the technical field of machining of rhombic lock notch grooves of steam turbine rotors, and aims to solve the problems that according to an existing last blade lock notch groove method, when an acute angle is machined, a tool is prone to breakage, so that the lock notch groove is punctured, and the perpendicularity of the lock notch groove is poor. The method comprises the following steps that firstly, a to-be-machined lock notch rhombus and quadrilateral CAD drawing is drawn and comprises to-be-machined parts at the left end and the right end of a lock notch and a feed space, and each to-be-machined part is divided into an acute triangle part, a rectangular part and an obtuse triangle part; 2, a tool is selected, and a rough slotting tool is selected as the tool; the machining method is used for machining the locking groove of the tail blade of the steam turbine rotor, the machining allowance is sequentially reduced through rough machining, semi-finish machining and finish machining, the machining efficiency is ensured, and the possibility that the cutter is broken when the acute angle is machined is also prevented.

The invention provides a fully synthetic cutting fluid special for a copper part and a preparation process thereof. The fully synthetic cutting fluid special for the copper part comprises the following raw materials in parts by weight: 0.5-2.0 parts of a defoaming agent, 1.0-3.0 parts of an antioxidant, 0.5-2.0 parts of a corrosion inhibitor, 2.0-5.0 parts of a surfactant, 0.5-1.5 parts of a metal ion complexing agent and 80.0-100.0 parts of deionized water. Wherein the antioxidant is prepared from carnosol, daidzin and butylated hydroxytoluene. The carnosol and the daidzin can be used for reducing the oxidation reaction by capturing free radicals, and the butylated hydroxytoluene can be used for further enhancing the anti-oxidation effect by interrupting the oxidation chain reaction. And through the combined action and mutual complementation of different anti-oxidation mechanisms, a synergistic effect is formed, and oxidation of the copper part in the machining process is effectively prevented. Wherein the metal ion complexing agent is composed of isothiocyanate, polyaspartic acid and amino trimethylene phosphonic acid, multiple protection mechanisms are formed, and the corrosion resistance of the copper part is remarkably improved. And the existence of the metal ion complexing agent is also beneficial to improving the stability of the cutting fluid.

The invention discloses an ultrasonic vibration cutting tool, and belongs to the technical field of ultrasonic vibration machining. The cutter assembly comprises a first clamping flange, a second clamping flange, a cutter and an ultrasonic vibrator, and the two clamping flanges and the cutter are fixedly connected and form an ultrasonic vibrator mounting part for accommodating the ultrasonic vibrator; a conducting layer and an insulating layer are arranged between the ultrasonic vibrator and the two clamping flanges, after the cutter is tightly fixed on the cutter holder by the fixing nut, the cutter is matched with the conducting layer to form an ultrasonic vibrator grounding end circuit, and the other side of the ultrasonic vibrator abuts against the power supply ejector pin; a cylindrical mounting part is arranged on the first clamping flange and provided with a conical matching hole matched with the conical mounting part of the tool apron, a plurality of Z-shaped elastic connecting sets are formed between the cylindrical mounting part and the conical matching hole, the design of through holes in special shapes has obvious buffering and vibration isolation effects, and the tool is divided into a mounting part and a vibration part during working. During assembly, the fixing nut is only in contact with the mounting part, so that the inhibition effect of mounting factors on the amplitude of the ultrasonic cutting knife is greatly weakened, and the cutting efficiency and quality are improved.

The invention discloses a cutting chain type transverse shaft type cutting mechanism suitable for a coal roadway and a half-coal-rock roadway and a heading machine. The cutting mechanism comprises a main machine frame, a motor, a cutting chain, a left cutting head and a right cutting head, the motor, the cutting chain, the left cutting head and the right cutting head are installed on the main machine frame, the left cutting head and the right cutting head are located on the two sides of the cutting chain respectively, and the motor drives the cutting chain to rotate and drives the left cutting head and the right cutting head to rotate; wherein a plurality of middle cutting teeth are distributed on the cutting chain; a plurality of left cutting teeth are distributed on the left cutting head; a plurality of right cutting teeth are distributed on the right cutting head; at least part of the middle cutting picks are matched with the left cutting picks to form a spiral line shape, and at least part of the middle cutting picks are matched with the right cutting picks to form a V shape. The problem that an existing cutting mechanism is low in cutting efficiency is solved.

The utility model discloses a boring tool for an inner spherical surface of a flange hole, and belongs to the field of machining. A boring tool for the inner spherical surface of a flange hole comprises a boring tool rod and a molded surface boring tool. The boring cutter rod comprises a conical boring cutter rod handle and a rotary cutter rod connected with the boring cutter rod handle, a screw hole matched with the blind rivet is formed in the end of the boring cutter rod handle, a square hole used for installing the molded surface boring cutter is formed in the rotary cutter rod, a bolt used for fastening the molded surface boring cutter is arranged on one side of the square hole, and a threaded hole matched with the threaded hole is formed in the other side of the square hole. The profile boring cutter is specially designed in structure according to the inner spherical surface of a flange hole. Complex machining of the inner spherical surface of the flange hole can be completed at a time, multi-procedure errors are avoided, the size and shape precision is guaranteed, the requirement of a drawing is met, traditional step-by-step machining can be replaced, the tool changing frequency and the clamping time are reduced, efficiency is greatly improved, and production cost is reduced.

The utility model relates to the technical field of drilling tools, in particular to a tower-shaped stepped drill bit. The tower-shaped stepped drill bit comprises a handle body and a drill body which are integrally connected, the drill body is formed by arranging a plurality of steps step by step, each step is provided with a cutting portion, a chip groove is formed in the side wall of the drill body, a crescent groove is formed in a main cutting edge of the cutting portion of the first step located at the tip of the drill body, and the crescent groove is communicated with the chip groove. An outer edge, an arc edge and an inner edge are sequentially formed on the main cutting edge in the direction from the outer side to the inner side of the drill body, the groove face of the chip groove is a front tool face, the end face of the first step is a first rear tool face, the main cutting edge is formed at the intersecting line of one side of the front tool face and the first rear tool face, and a rear edge is formed at the intersecting line of the other side of the front tool face and the first rear tool face. An arc groove is formed in the first rear cutter face and located in the rear edge. According to the tower-shaped stepped drill bit, the center positioning capacity is improved, swinging during drilling is reduced, and the drilling efficiency is improved.

This utility model proposes an alloy end mill, including a shank and a drill body. Four main cutting edges extend outward from the center of the drill body away from the shank end. Secondary cutting edges are evenly spaced along the sides of the drill body, each secondary cutting edge corresponding to a main cutting edge. The secondary cutting edges have a stepped structure. By setting a multi-step secondary cutting edge structure, efficient integrated machining of multiple hole diameters can be achieved, effectively reducing cutting resistance. A double clearance angle structure is provided between the main cutting edges, balancing cutting sharpness and vibration resistance, improving machining stability. Simultaneously, by setting redundant transition sections and controlling the width of the secondary cutting edges, the rigidity and durability of the tool body are enhanced, comprehensively improving the tool's machining efficiency and service life.

To address the issues of insufficient performance and high cost associated with integral casting and additive manufacturing methods for parts with small-entry elliptical gradient deep cavities, and the difficulties, low efficiency, and high cost of metal removal methods, this invention proposes a machining method for elliptical gradient deep cavities with small entry points. The method involves first rough drilling and rough turning to obtain a deep hole. Then, a step-by-step machining approach is adopted, dividing the part into regions and machining them axially and radially. First, the part is tilted to machine the regions on both sides of the major axis of the ellipse. Then, the part is turned upright to machine the regions on both sides of the minor axis of the ellipse. During the upright machining, a radial layering and thin-cutting fast-running method is used. Several layers are machined using the first toolpath until the machining residue in the undercut and triangular regions is removed. Then, a second toolpath is used for contour machining to obtain a gradient deep cavity with an elliptical cross-section. Finally, the gradient deep cavity is precision milled until its internal dimensions and surface roughness meet the design requirements.

The present invention provides a rail online repair milling cutter, which belongs to the technical field of machining tools. The present invention sets a plurality of groups of tool grooves including top surface machining grooves and side surface machining grooves on the wheel surface of a wheel-shaped cutter disc, and the large surface of the blade in the top surface machining groove is arranged in a plane inclined with the radial direction of the cutter disc, and the large surface of the blade in the side surface machining groove is arranged in a plane inclined with the axial direction of the cutter disc, so that when the cross section of the rail is taken as a reference, each blade is arranged flat, so that the contact area between the cutter disc and the blade in the cutting direction is larger, the supporting performance is better, the clamping is more stable, the cutting resistance is smaller, and the milling efficiency is higher. At the same time, the blade can be pressed by a pressing block to prevent the blade from being punched and affecting the structural strength. The blade has a long service life and a low replacement frequency. The blade can be taken and placed when the pressing block is slightly loose, and the blade is more convenient to replace, which is suitable for continuous repair of long rails.

A test bench and test method for a bending and shearing combined corn stalk cutting device, relating to the technical field of agricultural machinery, comprises a cutting device frame, a power input device, a cutting device and a stalk conveying device, wherein the power input device is fixed at the rear of the cutting device frame, the cutting device is fixed above the cutting device frame, the stalk conveying device is fixed at the front of the cutting device frame, the single-tooth reed-pulling tooth is fixed to the upper part of a slotted conveying chain plate through a reed-pulling tooth mounting plate, the double-tooth reed-pulling tooth is fixed to the middle part of the slotted conveying chain plate through a reed-pulling tooth mounting plate, the upper cutting knife is fixed to the lower outer side of an upper special-shaped chain group, and the three are installed with an offset in a vertical direction, so that the cutting device can realize a "bending-shearing" type stalk cutting method, the damping hinges are symmetrically distributed on both sides above the base, and the angle of the damping hinges can be adjusted to simulate the inclination angle of the cutting table during actual operation, and the device can significantly reduce the process time required in the design, production and testing of the cutting table, effectively improve research and development efficiency and reduce costs.

This utility model discloses a novel submersible motor upper seat structure for wells, including a motor upper seat with an oil chamber and a bearing chamber inside. A mechanical seal chamber is located above the bearing chamber for installing the mechanical seal. The oil chamber and the mechanical seal chamber are connected by a slot. Positioning holes are evenly distributed along the circumference of the side of the motor upper seat, with the positioning holes positioned higher than the highest point of the oil chamber, and the highest point of the mechanical seal chamber higher than the oil chamber. This utility model modifies the positional relationship between the oil chamber, the mechanical seal chamber, and the positioning holes, reducing quality risks in casting and machining, improving product quality and production efficiency; it increases oil saturation, completing oil injection in one step, significantly saving labor costs; the upper seat is made of hard-anodized aluminum alloy, which has low cutting resistance, is easy to machine, causes less tool wear, is less prone to corrosion, has minimal impact on the appearance of the electric pump, and has a cost similar to that of gray cast iron upper seats. Aluminum alloy is lightweight, reducing transportation and assembly costs, and has good thermal conductivity, which can lower the temperature of the motor during operation.

The utility model discloses a high-performance milling cutter for processing titanium alloy, which comprises a cylindrical cutter bar and a cutter head, the end part of the cutter head far away from one end of the cutter bar is hemispherical, the cutter head comprises a front end surface and six circumferential blades, the six circumferential blades are uniformly distributed on the outer surface of the cutter head, and a chip groove which rotates rightwards towards the direction of a cutter handle is formed between every two adjacent circumferential blades. A plurality of chip breaker grooves are formed in each circumferential blade, and two end blades are arranged on the front end face; according to the high-performance milling cutter for machining the titanium alloy, the six right-handed chip removal grooves are adopted, the heat dissipation area is increased, and the cutter can smoothly remove chips and disperse cutting force during cutting, so that the cutting resistance is reduced, the heat dissipation efficiency is improved, stress concentration points are reduced, resonance is reduced, and the cutting stability is good; and the chip breaker grooves are uniformly formed in the circumferential blade, so that chips are cut off, the length of the chips is reduced, the chip removal efficiency is improved, the cutting resistance is reduced, the friction force is reduced, the cutting heat is reduced, the service life of the cutter is prolonged, and the cutting stability is further improved.

This invention provides a multi-energy field assisted ultrasonic cutting device and method for CFRP preforms, relating to the fields of intelligent manufacturing and precision machining technology. The invention uses a laser generator to precisely and locally heat the cutting area, softening the resin matrix in the processing area and significantly reducing the material's strength and cutting resistance. Simultaneously, eddy current tubes cool the non-cutting areas of the workpiece, enhancing the stiffness of the resin matrix in these areas and the constraint force on the carbon fibers, effectively suppressing excessive deformation and displacement of the carbon fibers during processing. Ultrasonic vibration further induces brittle fracture of the carbon fibers through high-frequency impact, reducing the tensile effect caused by resin viscosity. Ultimately, this achieves the beneficial effects of high-quality, high-efficiency, and low-damage processing of CFRP preforms.

The utility model provides a drill bit, and belongs to the technical field of hardware tools. The technical problems that an existing drill bit is low in efficiency, poor in heat dissipation effect, short in service life and the like are solved. The drill bit comprises a drill rod and a tool bit, the tool bit is fixedly arranged at one end of the drill rod, the tool bit is provided with at least two cutting edges, all the cutting edges are evenly distributed in the circumferential direction of the tool bit at intervals, and the cutting edges are gathered at the center line of the tool bit to form a tool nose after extending in the direction of the center line of the tool bit in a linear inclination or arc inclination mode; a plurality of grooves are formed in the outer side face of each cutting edge, and the two ends, in the length direction, of each groove penetrate through the two sides of the corresponding cutting edge correspondingly. The cutting efficiency of the drill bit is greatly improved, the heat dissipation effect is good, the cutting edges are not prone to damage, and the service life is long.

The utility model discloses a front groove multi-edge centripetal inlaid bit blade which comprises a bit blade body, a square positioning groove is formed in the middle of the rear end of the bit blade body, two sets of positioning holes are formed in the front face of the bit blade body, and two sets of rear cutting faces and front cutting faces which are arranged in a staggered mode are arranged at the upper end of the bit blade body. A front cutting face is arranged on the center line of the drilling circle, a chip breaker groove is formed in the front cutting face, an arc-shaped front cutter face is arranged in the chip breaker groove, a blade is arranged at the front end of the chip breaker groove, and chip dividing grooves are evenly formed in the front cutter face and located on the center line of the drilling circle. Fish scale-shaped multi-cutting-edge centripetal chip dividing grooves are ground in the front cutter face, chip breaking grooves are formed at the same time, the left cutting force and the right cutting force are equal, and multi-stage chip dividing of the front cutter face is achieved; the extension lines of all the chip dividing groove blades intersect at the center of the drill bit blade, all the chip dividing groove blades are located on the center line of a drilling circle, cutting resistance is reduced, and cutting power consumption is reduced. And during drilling, multi-stage step hole wall guiding is formed, and the drilling precision is improved.

The application provides a special drilling tool for drilling a taper hole and a manufacturing method thereof, and steps are as follows: step 1, preparing a blank; step 2, processing a taper; step 3, processing a grinding groove; step 4, processing a main flank surface 2 of a chisel; step 5, grinding two main flank surfaces 1 of a drill tip; and step 6, grinding a first chip flute. The application is used for drilling a small inner hole and a large outer hole, effectively improves the drilling efficiency of the taper hole, and solves the processing problem of one-time forming of the taper hole.

The utility model discloses an anti-collapse combined tooth-shaped circular saw blade, and belongs to the field of diamond circular saw blade machining. The saw blade mainly comprises a saw blade body, a plurality of cutting tooth sets are arranged on the outer circumference of the saw blade body, when each cutting tooth set acts on the same tangent plane of a cutting material, the shape of the cutting section of the cutting tooth set is of a smooth transition structure, each cutting tooth set comprises more than two cutting teeth which are sequentially arranged, and the cutting edge of each cutting tooth is of a sawtooth-shaped structure. And tooth peaks and tooth valleys of the sawtooth-shaped structures in the cutting edges of the adjacent cutting teeth are arranged in a staggered manner. According to the utility model, the adjacent cutting teeth with different tooth shapes are combined into one cutting tooth group, and when the cutting tooth group acts on the same section of a cutting material, the shape of the cutting section is of a smooth transition structure, so that when different cutting teeth in the cutting tooth group are used for cutting, the cutting resistance is reduced, the anti-collapse performance of the cutting tooth group is improved, and the service life of the cutting tooth group is prolonged. Therefore, the cut noodles are smoother, and the quality of the cut noodles is improved.

The application relates to the technical field of insulator manufacturing, and discloses a roughing device for an electric porcelain insulator blank, which comprises a rack, a mold is rotationally connected to the upper surface of the rack, and a lifting frame is slidably connected to the outer surface of the rack; an adjusting shaft is rotationally connected to the outer surface of the lifting frame, a first roughing cutter and a second roughing cutter are fixedly connected to one end of the adjusting shaft, and a first adjusting assembly is arranged at the other end of the adjusting shaft and used for controlling the rotating angle of the adjusting shaft. The roughing device for the electric porcelain insulator blank can effectively solve the problem that, when the cutting amount of the blank is large, the cutting resistance of the roughing cutter is large, the roughing cutter vibrates, scratches, unevenness, burrs and other defects appear on the surface of the blank, the surface flatness is reduced, the size precision of the electric insulator blank is reduced, and the electrical performance and appearance of the insulator are affected.

The utility model relates to the technical field of milling cutters, in particular to an inner-cooling bionic indexable disc milling cutter which comprises a cutting groove formed in a cutter disc, a blade installed on the side wall of the cutting groove, a front cutter face arranged at the rhombus position of the blade, a crescent-shaped pit arranged at the corner of the front cutter face and a fishbone-shaped micro-texture arranged at the crescent-shaped pit. A flow guide boss is arranged on the side wall of the blade, different from randomness of traditional external spraying and limitation of a traditional inner cooling channel, the local cooling efficiency is effectively improved through cooperation of a bent cooling liquid channel in the cutter head and the structure on the blade; compared with a single-function micro-texture, through cooperation of the crescent-shaped concave pit-fishbone-shaped micro-texture-needle-shaped convex texture, the blade has the multiple capabilities of bending and cutting chips, breaking chips, reducing cutting resistance and prolonging the service life of the blade.

The invention provides a cutting device for aluminum alloy door and window machining, and belongs to the technical field of metal cutting equipment. The device comprises a mounting frame, and a limiting sliding groove and a reciprocating lead screw which are arranged on the mounting frame; through cooperation of the cutting and abutting device, the clamping and cleaning device, the lubricating and cooling device, the triggering device and the like, automatic cutting of the aluminum alloy door and window can be achieved, gas sprayed out of an airflow nozzle can blow away cuttings, meanwhile, the temperature of a cutting area can be reduced, a telescopic device can elastically abut against the upper side wall of the aluminum alloy door and window, and the cutting efficiency is improved. A flow guide hole with a port arranged in a big-in and small-out mode can filter lubricating liquid in a liquid storage box, the lubricating liquid can be shaken up through rotation of a cutting wheel disc, along with continuous rising of heat, a pneumatic floating plate can drive a pressure contact piece to make contact with a bearing contact piece under pushing of gas, at the moment, an electromagnetic valve is opened, and the lubricating liquid in the liquid storage box can be cut off; and the lubricating liquid can flow out from the corresponding flow dividing grooves, so that accurate cooling and lubricating treatment can be carried out on tooth spaces of the cutting wheel disc.

The utility model relates to the technical field of wet tissue processing, and discloses a wet tissue machine continuous slitting device which comprises a rack, a wet tissue slitting mechanism is arranged on the rack, the wet tissue slitting mechanism comprises an upper cutting roller and a lower cutting roller which are arranged in a relative rotation mode, upper slitting knives are evenly distributed on the upper cutting roller in the circumferential direction, and lower slitting knives are evenly distributed on the lower cutting roller in the circumferential direction. Upper slitting cutters matched with the upper slitting cutters are evenly distributed on the upper cutting roller in the circumferential direction, lower slitting cutters matched with the upper slitting cutters are evenly distributed on the lower cutting roller in the circumferential direction, a conveying channel is arranged between the upper cutting roller and the lower cutting roller, and a rotary wet tissue clamping mechanism is arranged at the position, corresponding to an outlet of the conveying channel, of the rack and comprises a rotary clamping roller rotationally arranged on the rack; the wet tissue slitting mechanism comprises a rack, a rotary clamping roller is arranged on the rack, clamping grooves are evenly formed in the rotary clamping roller around a shaft, clamping plates are arranged in the clamping grooves in the axial direction, clamping gaps are formed between the clamping plates and the clamping grooves, and a driving device used for driving the clamping gaps to change circularly is arranged on the rack. And the slitting efficiency is greatly improved.

The present invention is specifically a brush wire telescopic descaling device for an electrochemical reaction chamber, which solves the problem of deterioration of water quality during water treatment in an existing electrochemical reaction chamber. A brush wire telescopic descaling device for an electrochemical reaction chamber, the reaction chamber body includes a cylindrical inner cathode cylinder located in the middle, an outer cathode cylinder is arranged on the outer side of the inner cathode cylinder, and a plurality of electrode cylinders are arranged between the inner cathode cylinder and the outer cathode cylinder, and the electrode cylinder is composed of a cathode cylinder and an anode cylinder; a descaling brush body is arranged on the outer side of the inner cathode cylinder, the inner side of the outer cathode cylinder, and the inner and outer sides of the cathode cylinder, and a brush wire is slidably penetrated on the lower part of the circumferential surface of the descaling brush body. In the present invention, the brush wire is a telescopic profiling brush wire, the front blade surface of the cutting end has a small squeezing effect on the scale layer to be cut, and the cutting end has good cutting performance, which not only removes scale cleanly, but also consumes less energy for descaling. In addition, the descaling brush body rotates while moving, and the cutting end forms a peeling cutting on the scale layer, and the energy-saving effect is more significant.

The efficient three-blade drill comprises a cutter body with a cutter handle portion and a cutting portion, the cutting portion comprises a spiral face and a conical face, the spiral face is connected with the conical face and the cutter handle portion, the conical face is arranged on the end face, away from the cutter handle portion of the cutting portion, of the cutter handle portion, and three main cutting blades are arranged on the conical face. The side wall of the cutting part is provided with auxiliary cutting edges which are in one-to-one correspondence with the main cutting edges and are spirally arranged with the cutter handle part as the axis, a main chip groove is formed in one side of each main cutting edge, a first chip groove and a second chip groove are formed in one side of each main chip groove, the main cutting edges are in curve design, and the first chip groove and the second chip groove are in curve design. The curved surface between the main cutting edge and the auxiliary cutting edge is the main cutting surface, and the angle of each main cutting surface is gradually reduced from the main cutting edge to one side far away from the auxiliary cutting edge, so that the cutting resistance is reduced, the abrasion of the cutting edges is reduced, the service life of the drill bit is prolonged, and the processing efficiency is improved.

The invention discloses a bending-shearing combined corn straw cutting device test bed and a test method, and relates to the technical field of agricultural machinery, the bending-shearing combined corn straw cutting device test bed comprises a cutting device rack, a power input device, a cutting device and a stalk conveying device, the power input device is fixed at the rear part of the cutting device rack, and the cutting device is fixed above the cutting device rack; the stalk conveying device is fixed to the front portion of the cutting device rack, the single-tooth reel tooth is fixed to the upper portion of the slotting conveying chain plate through a reel tooth mounting plate, the double-tooth reel tooth is fixed to the middle of the slotting conveying chain plate through a reel tooth mounting plate, the upper cutter is fixed to the lower portion of the outer side of the upper special-shaped chain set, and the stalk conveying device, the single-tooth reel tooth and the double-tooth reel tooth are installed in an offset mode in the vertical direction. The cutting device can conveniently achieve a bending-shearing type stalk cutting mode, the damping hinges are symmetrically distributed on the two sides of the upper portion of the base, the inclination angle of the header in actual operation can be simulated by adjusting the angles of the damping hinges, the process time needed in the header design, production and test process can be remarkably shortened, the research and development efficiency is effectively improved, and the cost is reduced.

The milling process of the wheel disc mortise comprises the following steps: roughly milling an upper section of the mortise; roughly milling a straight groove and an inclined surface of the mortise; the middle throat part is roughed, the allowance of the middle throat part is formed and milled through a T-shaped milling cutter, and the allowance of the opening area of the middle throat part is further removed; forming and rough milling are carried out on the middle throat part, forming and milling are carried out, and an irregular allowance area in rough milling is removed; performing semi-finish milling and forming milling; semi-finishing molded lines of a middle throat part and a bottom part; carrying out semi-finish milling on an area; the upper section is subjected to finish milling through an upper section polishing tool; eccentric finish milling; a smooth-edge eccentric finish milling cutter is used for completing single-side milling; finish-milling the bottom molded line: finish-milling the bottom molded line; a wheel disc clamping and dividing device for machining wheel disc mortises comprises a dividing rotary table, a transition disc, a circular pressing plate, a double-end stud, a circular mandrel and a nut. A transition disc is mounted on the indexing turntable, and a hole and a groove are pre-formed in the transition disc; end face teeth are arranged on the upper portion of the transition disc and used for meshing with the wheel disc to transmit torque after automatic centering and positioning.

The invention relates to a high-hardness die fillet milling cutter, which is applied to the technical field of milling cutters, and comprises a cutter handle and a cutting part arranged at one end of the cutter handle, and the cutting part comprises a plurality of cutting edges and a spiral chip groove. The tool nose fillet blade is of the arc structure and adopts the variable rake angle structure, the design can reduce cutting resistance, improve the strength and durability of the tool nose arc and reduce vibration and noise in the cutting process, and the arc-shaped structure ensures the stability of end blade cutting and circumferential blade cutting, avoids tipping of the tool nose and improves the cutting efficiency. The end edge, the circumferential edge and the tool nose fillet edge are all subjected to blunt rounding treatment, microdefects of the cutting edge are reduced, and the cutting stability is improved. The cutting edge in the obtuse round shape can reduce the interaction force in the cutting process and reduce the cutting heat and abrasion in the machining process, so that the strength of the cutting edge is higher, and the service life of the cutter is prolonged.