17results about How to "Reduce cutting heat" patented technology

The invention relates to the technical field of machining, in particular to a multi-material combined deep hole machining method, a positioning block, a cutter and a part. Through rough machining of the bottom hole in the single-piece state, the difficulty of direct machining after multiple materials are combined is effectively reduced, the machining efficiency is improved, and the precision of the hole diameter is guaranteed. The roughly machined bottom holes of all the assembly parts are aligned and positioned, the deep holes to be machined are machined through a reaming milling cutter, and reamed holes are obtained; the axis deviation of the hole can be corrected, and an accurate reference is provided for subsequent machining. A reamer is used for machining a reamed hole, and a reamed hole milling cutter in a rear guiding mode is used for machining; deflection and vibration in the machining process are effectively restrained in the process, and the quality of machined holes is guaranteed. And the pre-machined deep hole is machined through a front guiding type reamer, so that the hole diameter of the pre-machined deep hole is enlarged to the target hole diameter, and machining of the multi-material combined deep hole is completed. The problems that in the prior art, machining precision is poor and efficiency is low in deep hole machining of various material combinations are solved.

A machining drill bit comprises a handle body, a cutting body and a blade body which are sequentially connected, the end, away from the cutting body, of the blade body is provided with two conical faces and two chip containing grooves, the two conical faces and the two chip containing grooves are sequentially and alternately arranged in the circumferential direction of the blade body, and cutting edge parts are formed between the groove walls of the chip containing grooves and the corresponding conical faces. The cutting body is provided with two chip grooves and two liquid inlet grooves, the two chip grooves and the two liquid inlet grooves are sequentially and alternately formed in the circumferential direction of the cutting body, each chip groove and each liquid inlet groove are spirally formed in the direction from the blade body to the handle body, and a cutting blade is formed in the position, between each liquid inlet groove and the corresponding chip groove, of the cutting body. The end, away from the handle body, of each chip discharging groove extends to the corresponding chip containing groove, and the end, away from the handle body, of each liquid inlet groove extends to the conical face. The machining device comprises the machining drill bit. The machining drill bit and the machining device can effectively reduce the cutting heat, improve the cutting efficiency and prolong the service life.

The invention discloses a C60 nanofluid minimal quantity lubrication turning method for a difficult-to-machine material, and belongs to a machining method. The cutter is especially suitable for cutting machining of difficult-to-machine materials. The nanofluid is prepared from fullerene C60 carbon nanospheres, trace lubricating oil based on plant components and a high-efficiency dispersing agent through accurate proportioning and a specific preparation process. The fullerene C60 carbon nanospheres can form a stable dispersion system in the cutting fluid due to the unique molecular structure and physicochemical properties, and exert excellent lubrication and antifriction effects in the cutting process. The trace lubricating oil has good biodegradability and environmental friendliness, and also has good lubricating performance and cooling performance. The dispersing agent ensures that the carbon nanospheres are uniformly dispersed in the cutting fluid, and agglomeration and precipitation are avoided. The nanofluid can remarkably improve the lubricating effect and cooling performance of cutting machining, reduce the cutting force and cutting heat, prolong the service life of a cutter and improve the machining quality and efficiency.

The utility model discloses a kind of concave composite chamfering cutter, belong to machining tool design technical field, the composite chamfering cutter includes two center symmetrical cutter teeth, cutter tooth is composed of back rake face, oblique front and cylindrical arc surface, wherein: the included angle range of back rake face and vertical face is 35 ° to 50 °, the included angle range of oblique front and vertical face is 8 ° to 15 °, cylindrical arc surface is the extension of cylindrical cutter body, the top end of cutter tooth is also provided with tooth end face, the included angle range of tooth end face and horizontal plane is 3 ° to 8 °. Compared with prior art, the composite chamfering cutter carries out mirror image processing to the two blades of tool, and designs specific cutter tooth angle, and the oblique front of specific angle can effectively increase the strength of tool, facilitate chip removal, and the back rake face of specific degree can reduce the wear of cutting edge while reducing vibration;The stability and service life of tool are improved, and the overall tool can effectively reduce the vibration interference in the machining process during the machining process, to ensure the stability and consistency of machining quality.

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.

The invention discloses a low-carbon, high-sulfur, bismuth-containing free-cutting steel and a manufacturing method thereof. The free-cutting steel is prepared by a certain ratio of manganese, sulfur and bismuth and a certain content of oxygen. Beneficial inclusions are precipitated during solidification and dispersed in the steel. The inclusions mainly include a manganese sulfide soft core structure, a manganese sulfide oxygen composite inclusion hard core structure, and a manganese sulfide bismuth composite inclusion hard core structure. The inclusions are dispersed in the steel, and during the rolling process, the manganese sulfide soft core structure is prevented from being elongated and deformed, so that the morphology of the inclusions changes to a spindle shape or a spherical shape that is beneficial to cutting, thereby achieving the purpose of improving the cutting performance and surface quality of the material.

The invention provides a total synthesis titanium alloy cutting fluid and a preparation method thereof. The total synthesis titanium alloy cutting fluid is prepared from the following raw materials in parts by weight: 55 to 60 parts of deionized water, 22 to 26 parts of sulfonate type ionic liquid, 7 to 9 parts of extreme pressure additive, 4.5 to 5.5 parts of antirust agent, 2.5 to 3.0 parts of catalase, 1.2 to 1.6 parts of antibacterial agent, 1.2 to 1.6 parts of stabilizer and 1.0 to 1.5 parts of defoaming agent. The prepared fully-synthesized titanium alloy cutting fluid can effectively lubricate titanium alloy for a long time under the conditions of high speed and high temperature, so that the abrasion of a tool in the machining process is remarkably reduced, and the service life of the tool is prolonged. And meanwhile, the surface machining quality of the titanium alloy workpiece is also remarkably improved, so that the workpiece is smoother and more accurate.

The utility model discloses a silicon rod grooving device, a silicon wafer and a battery piece, the silicon rod grooving device is used for forming a longitudinal through groove in a silicon rod, the silicon rod grooving device comprises an ultrasonic machining assembly and a grooving cutter connected with the ultrasonic machining assembly, and the ultrasonic machining assembly is used for driving the grooving cutter to make ultrasonic vibration. The grooving cutter connected with the ultrasonic machining assembly is adopted for grooving, compared with a traditional grinding grooving mode, the longitudinal through groove formed in the silicon rod is neat in groove shape and small in edge breakage and burr, the surface quality of the longitudinal through groove is improved, subsurface damage of the longitudinal through groove is reduced, and the service life of the longitudinal through groove is prolonged. Therefore, the fragment rate of the grooved silicon wafer in subsequent working sections such as degumming, cleaning, sorting and the like is reduced.

The invention relates to the technical field of machining, in particular to a long overhanging screw tap manual tapping device, equipment and method. The screw tap comprises a taper shank and a blade which are connected; positioning holes are formed in the positioning mechanism and comprise a taper shank positioning hole and a blade positioning hole; during tapping, a screw tap penetrates through the positioning hole and extends to the tapping hole, the taper shank is in clearance fit with the taper shank positioning hole, and the blade is in clearance fit with the blade positioning hole; the outer wall of the positioning mechanism is attached to the side wall of the part to be tapped. A taper shank of the screw tap is in clearance fit with a taper shank positioning hole of the positioning mechanism, and it is guaranteed that the taper shank does not deflect in the tapping process. The cutting edge of the screw tap is in clearance fit with the cutting edge positioning hole of the positioning mechanism, so that deviation of the positioning mechanism caused by hole edge protrusion, small scrap iron and the like during tapping can be avoided, and the tapping accuracy and precision are improved. The problem that the tapping quality and efficiency are affected due to deflection of a manual tapping screw tap of an existing long overhanging screw tap is solved.

The utility model provides a wear-resistant numerical control coating cutter which comprises a cutter handle and a cutter holder, a mounting groove is formed in the middle of the cutter handle, the cutter holder is embedded in the mounting groove, a positioning groove is formed in the upper surface of the cutter holder, a gasket is arranged in the positioning groove, and a blade is arranged on the gasket. The length of the tool apron is smaller than that of the tool handle, the rear end of the tool apron abuts against the tool handle, and a clamping assembly is arranged between the tool apron and the tool handle. The blade comprises a base layer, a reinforcing layer coated outside the base layer and a wear-resistant layer coated outside the reinforcing layer. The cutter holder is embedded in the cutter handle, the cutter holder and the cutter handle are arranged through the clamping assembly, the stability of the cutter holder is improved, shaking generated in the cutting process of the blade is prevented, disassembly and assembly are convenient, and the strength of the blade is improved and the service life of the blade is prolonged through the arrangement of the base layer, the strengthening layer and the wear-resistant layer.

The utility model provides a cutting tool which comprises a tool handle and a tool bit arranged at the end of the tool handle, a movable positioning plate and a movable wing plate are arranged on the tool bit, an installation groove used for containing a blade is formed between the movable positioning plate and the movable wing plate, and a base plate placed in the installation groove is arranged at the lower end of the blade. The blade is composed of four cutting units, each cutting unit comprises an upper surface, a lower surface and two side faces connected with the upper surface and the lower surface, and every two adjacent side faces are connected through a cylindrical face to form a tool nose vertex angle. The movable positioning plate and the movable wing plate are detachably arranged on the cutter head, so that when the blade needs to be replaced, only the movable positioning plate and the movable wing plate matched with the blade need to be replaced, the whole cutter does not need to be replaced, and the blade is composed of four cutting units. When one cutting unit is worn, the other cutting unit can be used for cutting, so that the service life of one blade is prolonged.

The utility model relates to the technical field of drill bit, especially to a variable helix integral hard alloy drill bit, including drill bit and drill handle, the drill bit and drill handle are integrally formed structure, the outer wall of drill bit is provided with the outer circle blade zone, the outer wall of drill bit is installed with the outer circle auxiliary blade zone, the outer wall of drill bit is provided with the rear blade angle, the outer wall of drill bit is provided with the top angle, the outer wall of drill bit is provided with helix angle one, the outer wall of drill bit is provided with excessive helix angle, through helix angle adjustment (high helix angle of entry section chip removal, low helix angle of exit section stable cutting), through the balance of chip removal and rigidity of groove type optimization, optimize the chip flow path, accelerate the chip removal, reduce the blockage and cutting heat, improve the hole wall quality, and the rigidity of the patent design product cutter is improved, in high -speed processing, reduce the blockage and heat accumulation, the precision and surface roughness of hole have been effectively improved, and with the cutting heat reduction, the tool life is further improved.

The invention discloses an ultralow-temperature cutting machining method for a shaped charge liner part and a clamp. The ultralow-temperature cutting machining method comprises the steps that a machine tool spindle is connected into a pipeline, a-198 DEG C liquid nitrogen coolant or a-78 DEG C liquid carbon dioxide coolant is introduced into the clamp, and the shaped charge liner part is cooled. According to the clamp, after the bottom face of a shaped charge liner is subjected to finish machining and the outer circle end face is subjected to semi-finish machining, a set of cutting combined clamp is adopted, and after the outer convex arc face of the shaped charge liner part is subjected to finish machining and a reaming hole is subjected to finish machining, the relative position of a clamp body on a machine tool is kept unchanged, and the part is turned over; therefore, the inner concave cambered surface of the shaped charge liner part can be finely machined. According to the fixture, one fixture main body is shared when the outer convex cambered surface and the inner concave cambered surface of the shaped charge liner are subjected to finish machining, so that the required special cutting fixture is reduced, the auxiliary machining time is shortened, the machining efficiency and the machining precision of shaped charge liner parts are improved, and high-efficiency and high-quality machining is realized.

This invention belongs to the field of ceramic matrix composite material machining technology, and discloses a SiC f A method for drilling small, oblique holes in SiC ceramic matrix composites includes: using a grinding head with applied ultrasonic vibration to drill the SiC... f The SiC ceramic matrix composite workpiece is subjected to dot-mapping to form a slanted small hole inlet platform; an ultrasonically vibrating drill bit is used at the slanted small hole inlet platform to drill the SiC to be processed. f This invention aims to solve the problem of drilling oblique small holes in SiC ceramic matrix composite workpieces. f The high hardness, brittleness, and inhomogeneity of SiC ceramic matrix composites present technical challenges, such as difficulty in drilling small oblique holes and easy tool breakage during the machining process.

The invention provides a high-speed high-temperature-resistant resin binder grinding wheel which comprises a base body and a grinding wheel body, and the grinding wheel body is prepared from 100 parts of grinding materials, 15-20 parts of binding agents and 5-13 parts of auxiliary materials. The grinding material comprises a main grinding material and an auxiliary grinding material, the main grinding material comprises 5-10 parts of diamond, 30-50 parts of brown fused alumina, 20-30 parts of cubic boron nitride and 5-10 parts of silicon carbide, and the auxiliary grinding material comprises 3-5 parts of white corundum and 5-8 parts of single crystal corundum; the binding agent comprises phenolic resin; and the auxiliary materials are polypropylene fibers for enhancing the hardness and toughness of the grinding wheel and high-temperature-resistant high-carbon steel wires. According to the grinding wheel, the polypropylene fibers are added into ingredients of the grinding wheel body, and due to the fact that the polypropylene fibers have certain strength, the polypropylene fibers can form an anchoring effect in the grinding wheel body and can instantly absorb certain damage energy, the brittleness of the grinding wheel body is reduced, and the toughness of the grinding wheel body is improved; the high-temperature-resistant high-carbon steel wire is added to serve as a supporting framework of the grinding wheel body, and the integrated structural strength of the grinding wheel body is further enhanced.

This invention discloses a cutting insert and a drilling tool for detachable mounting on a tool holder. The insert includes a first mounting plane and a second mounting plane, which form the seat surface of the insert; two V-shaped mating surfaces that fit and conform to the V-shaped positioning surface on the tool holder; at least one screw hole; four main cutting edges forming a polygonal outline on the V-shaped mating surfaces; a chip groove adjacent to the main cutting edges; a chisel edge connecting the main cutting edges; and a drill tip formed by the intersection of the theoretical extensions of the cutting edges of the main cutting edges. The insert as a whole has a symmetrical structure relative to the center line connecting the screw holes. The cutting insert can be mounted with either the first or second mounting plane facing the tool holder, allowing for drill tip interchangeability. This invention adopts a double-sided symmetrical design, overturning the traditional drill bit model that can only use one cutting tip, significantly improving the utilization rate of the insert material.

The utility model provides a cutting fluid injection pressure and injection angle adjustable high-pressure inner-cooling turning tool bar, which comprises a turning tool bar and a tool bit positioned at one end of the turning tool bar, a turning tool blade is mounted at the front end of the tool bit, cutting fluid is injected into the inner-cooling turning tool bar through a threaded hole at the bottom of the tool bit, the tool bit is provided with two spray nozzles A and B, and the spray nozzles A and B are communicated with the turning tool bar. The spraying pressure of the sprayers can be adjusted through the pressure adjusting screws, the spraying angle of the sprayers can be adjusted through the angle adjusting rods, spraying can be conducted on the front tool face and the cutting chip breaking position of the turning tool blade, the two nozzles are formed in the lower portion of the tool bit, and spraying can be conducted on the main rear tool face and the auxiliary rear tool face of the turning tool blade. The turning tool is used for turning hard-to-cut materials such as titanium-aluminum alloy and the like, and has the advantages of being convenient to disassemble and assemble, high in cooling efficiency, good in chip removal effect, capable of improving the quality of a machined surface, capable of prolonging the service life of the tool and the like.