40results about How to "Keep sharp" patented technology

The present invention discloses a wear-resisting cutting pick and its production method. Said production method includes the following steps: adopting high-energy beam irradiation to make cutting pick head portion formed by means of a certain processing method be formed into a melting bath, at the same time feeding wear-resisting alloy powder into said melting bath, making the wear-resisting alloy powder and said melting bath be molten together, mixed and solidified so as to form the wear-resisting alloy pick head, then sharpening the pick head, making heat treatment and anticorrosive treatment so as to obtain the invented wear-resisting cutting pick.

An illumination device worn at chest height to illuminate an area proximate to the wearer.

The invention discloses a high-temperature diamond-impregnated drill bit matrix and a manufacturing method of a drill bit. The matrix comprises, by weight, 45-55 parts of pure Cu powder, 20-30 parts of pure Co powder, 12-18 parts of pure Sn powder, 3-8 parts of pure Ti powder and 3-8 parts of pure Cr powder. The matrix can be closely combined with diamond and has good performance in binding with diamond and good wear characteristics. The manufacturing method of the high-performance diamond-impregnated drill bit comprising the matrix includes steps of matrix preparation, mixing with diamond, hot-press sintering, temperature holding, cooling and brazing. The diamond-impregnated drill bit manufactured by the method has high wear resistance and machining quality, and working life of the drill bit when being used for machining structural ceramic can reach higher than 2200mm.

The invention relates to a depth image super-resolution reconstruction method based on high-quality edge information guidance. The method comprises the following steps that: preprocessing one group ofhigh-resolution example images to obtain high-resolution and low-resolution image block pairs; carrying out joint training on the high-resolution and low-resolution image blocks to construct the dictionary pair of the high-resolution and low-resolution image blocks; inputting a low-resolution test image, amplifying an interpolation to a target size, using impact filtering to process the interpolated image, and extracting the edge of the filtered image using a training dictionary to carry out sparse representation on the edge image to construct a high-quality edge; and under the guidance of the high-quality edge information, using an improved joint two-sided filter to carry out interpolation construction on the low-resolution test image so as to obtain an expected high-resolution depth image. By use of the method, the phenomena of edge blur and sawteeth in a reconstruction process can be avoided, the sharpness of the image edge is kept, and in addition, noise can be effectively inhibited.

The invention discloses a light and small elevating quick assembling and disassembling rice and wheat harvester comprising a harvesting assembly, a chassis assembly, a power assembly and a straw cutting cutter row assembly, wherein an ear outlet of a shear and an ear inlet of a threshing barrel are directly connected to form an integral harvesting assembly; the straw cutting cutter row assembly is positioned on the front end of the lower underframe of the chassis assembly; the rear part of the harvesting assembly is provided with an affiliated embedding spile assembly; the upper end of the chassis assembly is provided with an affiliated embedding socket assembly; the rear lower part of the chassis assembly rack is provided with a spile slot and a tensioner; the top of the chassis assembly is provided with a cord drawing device; the lower part of the power assembly is provided with a spile; and the movable cutter bar of the straw cutting cutter row assembly is provided with a left grass feeding huge-tooth assembly, a right grass feeding huge-tooth assembly and a grass separator. The harvester can be free from the limitation of hills, montanic field narrow roads or single bridge. During harvesting, the harvester is free from limitation of muddy feet depth and abnormity, small plots and bent and narrow fields. The working efficiency of the harvester is higher than any rice and wheat harvester which can be carrier by two people for times.

The invention provides a self-cooling technology and a machining method of a metal plate spiral stepped blade twist drill, and relates to a metal plate spiral stepped blade twist drill. The metal plate spiral stepped blade twist drill is characterized in that a sub spiral cutting edge is arranged on each spiral bar, a sub spiral cutting face is formed along the outer sides of the sub spiral cutting edges, a spiral cutting face is formed along the inner sides of the sub spiral cutting edges, a composite spiral cutting face with at least one step is formed on the spiral cutting face in a stepped protruding mode, the top face of the front end of the spiral cutting face is a rear cutting face, and the spiral cutting face or the composite spiral cutting face intersects with the rear cutting face to form a stepped cutting edge, namely a stepped blade; the back face corresponding to the spiral cutting face in the rotating direction of the metal plate spiral stepped blade twist drill is a rear spiral face, at least one spiral groove is formed in the rear spiral face, or a spiral table is formed on the two sides of the groove, or a cooling pipe is integrally arranged in the spiral groove, or a sealed spiral face is integrally arranged or welded on the spiral table, a cooling hole communicated with the spiral groove or the cooling pipe is formed in the handle of a tool at the top end of the spiral groove or the spiral table, and a connecting opening communicated with the outside is formed in the top end of the handle of in the handle.

The invention provides a high-efficiency self-cooled reamer, and mainly relates to a center bit or a countersink bit for machining. The high-efficiency self-cooled reamer is characterized in that a cutting edge is arranged on each spiral strip of the reamer; a cutting surface is formed along the outer side of the cutting edge; the cutting surface is arranged on the front part of the cutting edge facing to the cutting direction; cooling holes or cooling troughs are formed in the axial center of the reamer and nearby; the lower ends of the cooling holes or the cooling troughs are communicated with cooling ports in grooves in the front parts of the cutting surfaces of the center bit or the countersink bit; the upper end of the center bit or the countersink bit is communicated with an integrally-formed cooling pipe on a handle part of the center bit or the countersink bit; connecting ports are formed on a handle body or at the front end of the axial center of the handle part of the center bit or the countersink bit.

The invention provides a self-cooling center driller or self-cooling countersink driller and mainly relates to a center driller or countersink driller used for machining. The self-cooling center driller or self-cooling countersink driller is characterized in that each spiral bar of the center driller or countersink driller is provided with a cutting blade; a cutting surface is formed along the outer side of the cutting blade; the cutting surface is formed on the front part of the cutting blade facing to a cutting direction; cooling holes or cooling slots are arranged at the axial center and the positions, close to the center of the center driller or countersink driller; the lower ends of the cooling holes or cooling slots are communicated with cooling openings arranged in the grooves on the front part of the cutting surface of the center driller or countersink driller; the upper end of the center driller or countersink driller is communicated with an integrally arranged cooling pipe of a shank of the center driller or countersink driller; a connecting port is arranged on a shank body of the shank or at the front end at the axial center of the shank of the center driller or countersink driller.

The invention provides a machining method of a high-precision superhard-abrasive integral abrasive cutting wheel. The problems that in the prior art, when a grinding process is adopted for machining athin abrasive cutting wheel, efficiency is low, the rate of finished products is low, and operation condition and environment pollution are likely to be caused are solved. The method is characterizedin that the abrasive cutting wheel is a sintered body formed by blending a binding agent and a superhard abrasive material, an abrasive cutting wheel blank is fixed to a carrier through a thermoplastic material, then the carrier is fixed to a workbench of a grinding machine tool, material removing machining is conducted on the blank through an abrasion wheel grinding method, and a finished product with the needed form and location tolerance and size precision is obtained, the abrasion wheel is a common abrasive grinding wheel, by the adoption of the machining method of the high-precision superhard-abrasive integral abrasive cutting wheel, deformation and damage of the abrasive cutting wheel are reduced, the machining yield is increased, and an unexpected technical effect is achieved.

The invention relates to a material grabbing mechanism for a portable bag closer, which comprises a material grabbing upper pressure rack and a material grabbing lower retainer, wherein a machine needle passes through the material grabbing upper pressure rack and the material grabbing lower retainer from top to bottom, the upper surface of the material grabbing lower retainer is provided with sawteeth, the material grabbing upper pressure rack and the material grabbing lower retainer can be kept close to each other to feed materials cooperatively, the upper surface of the material grabbing lower retainer is also provided with skid-proof needle points of which the tops are higher than the sawteeth, the lower surface of the material grabbing upper pressure rack is provided with a needle hiding groove, the height of the skid-proof needle points is not greater than the depth of the needle hiding groove, the length of the needle hiding groove is not less than the sum of the diameter of theskid-proof needle points and the forward and backward moving strokes of the skid-proof needle points, and the skid-proof needle points extend into the needle hiding groove when the material grabbing lower retainer is kept close to the material grabbing upper pressure rack. The structure can avoid the hard abrasion generated between the skid-proof needle points and a material feeding upper pressure rack so as to effectively keep the sharpness of the skid-proof needle points and bring the beneficial effect that the material grabbing mechanism grabs materials firmly and feeds the materials reliably.

The invention discloses a three-dimensional object printing method, a data processing device and computer equipment. The invention provides a three-dimensional object printing method and a device thereof as well as computer equipment. The method comprises the following steps: acquiring first data of a three-dimensional digital model of a to-be-printed three-dimensional object, wherein the first data comprises shape data; acquiring geometrical characteristic information of the to-be-printed three-dimensional object according to the shape data, wherein the geometrical characteristic information comprises at least one of the angle of the surface, the sharpness of the ridge and the sharpness of the vertex in the to-be-printed three-dimensional object; determining second data of a supporting part for supporting the three-dimensional object according to the geometrical characteristic information, wherein the second data comprises extension width of the supporting part; and generating printing data according to the first data of the three-dimensional digital model and the second data of the supporting part, and printing based on the printing data to obtain a three-dimensional object comprising the extended supporting part. According to the three-dimensional object printing method provided by the embodiment of the invention, the supporting part can support the entity part of the three-dimensional object so as to prevent the three-dimensional object from being deformed due to the geometrical characteristic of the three-dimensional object; and the forming precision of the three-dimensional object is improved.

The invention discloses an internal blowing cleaning blade type threshing roller, which comprises a roller body. A threshing knife lug for mounting a threshing knife is arranged on the outer peripheral surface of the roller body. The threshing roller further comprises a threshing roller shaft; the two ends of the threshing roller shaft are mounted through bearing bases; the roller body is internally hollow; the roller body sleeves the middle part of the threshing roller shaft and can rotate along with the threshing roller shaft; a distribution cavity is reserved between the outer circumferential face of the threshing roller shaft and the inner wall of the roller body; a main pipeline and branch pipelines are arranged in the threshing roller shaft; the main pipeline is arranged in the axialdirection of the threshing roller shaft; one end of the main pipeline is communicated with a rotary connector; the distribution cavity is communicated with the main pipeline through the branch pipelines; cleaning holes are formed in the circumferential face of the roller body; the cleaning holes are internally communicated with the distribution cavity; and spray heads are arranged on cleaning hole outlets. The nozzle is arranged in the threshing roller, gas or other fluid cleaning media enter the threshing roller with the hollow interior through the rotary connector and are sprayed out of thenozzle to clean the threshing knife lug and the threshing knife, so that sharpness and cleanliness of the threshing knife are kept all the time, labor consumption and the equipment failure rate are greatly reduced, and production efficiency is guaranteed.

The invention relates to the field of envelope binding equipment, in particular to an integrated envelope eyelet binding machine. The integrated envelope eyelet binding machine comprises a rack, an envelope feeding device, an envelope tongue opening position pressing and buckling device, a rope threading device, an envelope front face position pressing and buckling device and a finished product output device are arranged on the rack in sequence, the rope threading device is located below the envelope tongue opening position pressing and buckling device, the envelope tongue opening position pressing and buckling device and the envelope front face position pressing and buckling device are same in structure, the envelope front face position pressing and buckling device comprises a punching mechanism, a feeding roller, an inserting hole device, a pressing and buckling device and an air suction device which are mounted on the rack in sequence, according to the integrated envelope eyelet binding machine, punching, rivet putting and envelope nailing integration of a strip blank material can be achieved, error accumulation caused by in-advance punching can be avoided, the nailing error canbe prevented, work efficiency is improved, through a punching mechanism, the strip blank is punched, punching precision is improved, it is ensured that the hole inner wall is free of burrs, failuresof the envelope eyelet binding machine are avoided, and the binding quality of envelopes can be improved.

The invention relates to a method for manufacturing composite steel for cutting tools. (1) firstly perform surface deoxidation and decontamination treatment on the cutting edge steel with a carbon content of more than 0.5% and matrix steel; (2) combine the cutting edge steel and the matrix After the steel is stacked, weld the surrounding edges, and set 2 to 6 reserved vent holes at the rear end of the rolling direction to make a billet; Raise the temperature and heat it to 1050°C-1200°C in a protective atmosphere, carry out multiple directional rolling on the billet, the first two pass reduction rate is 40%-55%, and make a composite steel; (4) Stress relief annealing deal with. By controlling the heating temperature and speed of the two metal blanks, the invention can make the composite interface of the two metals bonded stably after high-temperature hot rolling of the two solid-phase metals, with clear composite interface, material cross-section combination size and steel ratio accuracy High, high yield, does not reduce the mechanical properties of cutting edge steel, and is easy to industrialized production.

The invention provides a production method of a 300-series stainless steel kitchen cutter. The production method includes the steps that an initial cutter body and an initial cutter handle are provided; hardening treatment is carried out on the cutting edge part of the initial cutter body by adopting high-temperature fusion, seamless welding or high-temperature forging; the initial cutter handle and the initial cutter body are welded together to form an initial cutter; a cutter handle of the initial cutter is polished and trimmed; the end surface of a cutter body of the initial cutter is ground by adopting water grinding equipment; the cutter handle and the cutter body of the initial cutter are polished; the polished initial cutter is subjected to edging treatment; and the initial cutter subjected to edging treatment is cleaned and subjected to oil immersion treatment, so that the final cutter is formed. According to the production method of the 300-series stainless steel kitchen cutter, the cutting edge part of the initial cutter body is hardened by adopting high-temperature fusion, seamless welding or high-temperature forging, so that the hardness and the wear resistance of the cutting edge part of the manufactured cutter can be enhanced, and the manufactured cutter can be kept sharp for a long time.

The invention discloses a sewing machine thread trimming device and a using method thereof, and belongs to the field of sewing machines. The sewing machine thread trimming device comprises a device plate; a thread trimming groove is formed in the side wall of the device plate; a sliding groove and a clamping groove are formed in the left inner wall and the right inner wall of the thread trimming groove; a blade is slidably connected into the sliding groove; an air storage tank is arranged in the device plate; a sliding cavity is formed in the inner wall of the sliding groove; a piston is slidably connected into the sliding cavity; the side wall of the piston is fixedly connected with the side wall of the blade through a connecting rod; the blade is elastically connected with the inner wall of the sliding groove through a reset spring; an air outlet pipe of the air storage tank extends into the sliding cavity; silk thread abutting mechanisms are arranged on the upper side wall and the lower side wall of the blade; a device cavity is formed in the device plate; and an air inflation mechanism connected with the air storage tank is arranged in the device cavity. The thread trimming device can fix a silk thread during thread trimming, so that the thread trimming efficiency is higher, and the functions are more complete.

The invention provides a self-cooling technology for a machined twist drill and a machining method of the machined twist drill, and mainly relates to a machined twist drill. The machined twist drill is characterized in that a spiral secondary cutting blade is arranged on each spiral strip; a spiral secondary cutting face is formed along the outer side of the spiral secondary cutting blade; a spiral cutting face is formed in the front of the spiral secondary cutting blade in the cutting direction; the surface at the top of the front end of the spiral cutting face of the spiral strip at the front end in the axial center of the cutter head is a rear cutting face; the spiral cutting face is intersected with the rear cutting face to form a cutting blade; the included angle between the cutting blade and the spiral secondary cutting blade is set to be a flat blade, an arc-shaped blade or an inclined blade; a notch blade or a trapezoidal blade is arranged on the inner side of the flat blade, the arc-shaped blade or the inclined blade; a drill point or a stepped drill point is convexly arranged in the center of the cutting blade; the surface of the back side opposite to the spiral cutting face in the rotation direction of the machined twist drill is a rear spiral face; at least one spiral groove is formed in a rear spiral face, or spiral platforms are machined on the two sides of the spiral groove, or a water pipe is arranged in the spiral groove, or spiral sealing faces are arranged or welded on the spiral platforms, the shank portion of the top end of the spiral groove or the shank portion of the top end of the spiral platforms is provided with a cooling hole communicated with the spiral groove or the water pipe, and the top end of the shank portion or the shank is provided with a connecting port communicated with the outside.