819results about "Workpieces" patented technology

A cutting insert includes a rake face, a flank face, and a cutting edge constituted of a ridgeline between the rake face and the flank face. The cutting edge has a first cutting edge portion for corner processing, a second cutting edge portion for low cut-in pulling processing, a third cutting edge portion for high cut-in pulling processing, a fourth cutting edge portion for finished-surface processing, a first connection cutting edge portion, a second connection cutting edge portion, and a third connection cutting edge portion. The fourth cutting edge portion is disposed between the first cutting edge portion and the second cutting edge portion. The second cutting edge portion is disposed between the fourth cutting edge portion and the third cutting edge portion. Each of the first cutting edge portion, the second cutting edge portion, and the fourth cutting edge portion has a curved shape.

The present invention belongs to the technical field of composite material processing, and relates to a hole making tool for aramid fiber-reinforced plastic and a design method thereof. The drill bit has a step reversed point angle structure, which can reduce a trust force during drilling and effectively cut off a high toughness aramid fiber, thus to improve the hole making quality of an AFRP-related component. It is proved that the new tool can significantly improve the hole making quality of an AFRP component, improve the service life and safety degree, and greatly reduce the processing cost. Therefore, the present invention has a broad application prospect in the fields of aerospace, military industries and civil application.

A cutting tool comprising a base material and a coating disposed on the base material, wherein the coating comprises a hard particle layer; the hard particle layer is formed from a plurality of hard particles including titanium, silicon, carbon, and nitrogen; in the hard particles, a concentration of the silicon periodically changes along a first direction set in the hard particles; and an orientation of the hard particle layer is a (311) orientation.

The invention provides a preparation method of a wear-resistant and strength-coordinated hard alloy product. The method comprises the following steps: (1) hard phase pretreatment: mixing tungsten carbide powder with a yttrium-stabilized zirconia precursor solution; (2) nano coating modification: placing the mixed material in a planetary ball mill for ball milling to obtain yttrium-stabilized zirconium oxide coated tungsten carbide composite powder; (3) preparing a binding phase; (4) mixing and pressing; (5) performing gradient sintering to obtain a sintered body; and (6) the sintered body is placed in a vacuum furnace to be subjected to aftertreatment, and the wear-resistant and strength-coordinated hard alloy product is obtained. Through multi-dimensional innovation of material proportion innovation, process optimization and equipment improvement, the technical problems of traditional hard alloy in the aspects of hardness and toughness balance, high-temperature performance stability, production cost control and the like are successfully solved, and a hard alloy solution which is excellent in performance and economical and feasible is provided for the field of high-end equipment manufacturing.

The present invention provides a process of forming a cutting tool comprising the steps of: additive deposition of a tool material comprising at least one of: tungsten carbide, TaNbC, a tungsten carbide containing alloy or composite, or a TaNbC containing alloy or composite onto a base substrate having a longitudinal axis, said tool material being deposited onto the base substrate to form a deposit body configured to form at least one cutting formation therein; and subsequently subtracting selected portions of the deposit body to produce at least one cutting formation having a selected cutting edge configuration, thereby forming the cutting tool.

A coated cutting tool for metal machining has a base body of cemented carbide, cermet, ceramics, steel or high-speed steel, and a wear resistant coating deposited thereon. The coating includes a layer of Ti1-xAlxCyNz with 0.40≤x≤0.95, 0≤y≤0.10 and 0.85≤z≤1.15, and a portion of MeCaNb, 0≤a≤1, 0≤b≤1, a+b=1, present on the layer of Ti1-xAlxCyNz. The portion of MeCaNb covers from 5 to 28% of the layer of Ti1-xAlxCyNz. A process for the production of the coated cutting tool and the use of the coated cutting tool in machining of stainless steel is also provided.

The invention is suitable for the technical field of milling cutter machining, and provides a hard alloy milling cutter cutting edge passivation process which comprises the following steps that a passivation solution containing Fe < 3 + > and Zn < 2 + > is prepared, and the passivation solution comprises abrasive particles and a nanometer reinforcing phase; the tool is immersed in a passivation solution to be subjected to chemical-mechanical composite treatment; the cutting edge is subjected to plasma impact treatment; a cutting edge grain boundary is reconstructed through laser irradiation, and atomic-scale reconstruction of the hard alloy cutting edge and multi-scale optimization of structure strengthening are achieved through combination of a chemical-mechanical-energy field composite effect, a metal ion passivation reaction and plasma / laser modification and cooperation of metal ion selective passivation, grain boundary engineering regulation and control and nanometer enhancement. On the basis of chemical passivation, the mechanical performance of the cutting edge of the milling cutter is improved through a composite passivation film generated through Fe < 3 + > / Zn < 2 + > reaction, plasma impact and laser reconstruction are coupled through an energy field, the problems of microdefects and grain boundary weakening are solved respectively, and the strength of the cutting edge is further improved through the synergistic effect of the three.

The present invention relates to a drill bit (10) comprising: - a body (12), with a central longitudinal axis (AX) and longitudinally delimited by an end rim (14), intended to be rotated about the longitudinal axis to penetrate longitudinally from the end rim through a block in a penetration direction (T1); - a series of teeth (18) carried by the body and projecting from the end rim (14) in the penetration direction to contact the block, these teeth being spaced apart along the circumference of the end rim; wherein recesses (20) are formed in the body and spaced apart along the circumference of the end rim, each recess extending from the end rim; and wherein each tooth (18) is arranged circumferentially from each recess (20). Figure 2a

A cutting tool includes: a cutting edge configured on an intersecting line of a rake surface and a flank; a breaker wall formed inside the cutting edge and protruding above the cutting tool; a boss part including a boss surface formed above the breaker wall; and a plurality of recessed parts formed in the boss part so as to extend toward the cutting edge. The width of the breaker wall in a direction in which the cutting edge extends along an intersecting line (including a virtual intersecting line or a virtual extension of the intersecting line) of the boss surface and the breaker wall, is greater than the width of a groove formed by the recessed part along the same intersecting line.

A cutting tool includes a substrate at least partially coated with a coating. The substrate is a cemented carbide, cermet or ceramic. The coating includes a layer of Ti(C,N), a layer of Al2O3 and there between a bonding layer. The Ti(C,N) layer is composed of columnar grains, wherein an average grain size D422 of the Ti(C,N) layer is 25-50 nm, and wherein the Ti(C,N) layer includes a portion B1 that is adjacent to the bonding layer. An average grain size of the Ti(C,N) grains in portion B1 is larger than the average grain size D422 in the whole Ti(C,N) layer. In the portion B1 of Ti(C,N) layer the Ti(C,N) grains has an average grain size of 140-300 nm.

To provide methods and systems for secure connections in individual layer segments connected to each other from one end to the other end.SOLUTION: A method of manufacturing a part with a plurality of cut segments includes receiving a sheet of material with a machining apparatus, removing material with the machining apparatus to form a plurality of segments in the sheet of material, and forming complementary shapes in ends of two or more segments of the plurality of segments. The method further includes forming slots in the two or more segments, aligning the slots in the two or more segments to form a cavity, and inserting a connecting device to fill the cavity.SELECTED DRAWING: Figure 2A

A cutting tool includes: a cutting edge configured on an intersecting line of a rake surface and a flank; a breaker wall formed inside the cutting edge and protruding above the cutting tool; a boss part including a boss surface formed above the breaker wall; and a plurality of recessed parts formed in the boss part so as to extend toward the cutting edge. The width of the breaker wall in a direction in which the cutting edge extends along an intersecting line (including a virtual intersecting line or a virtual extension of the intersecting line) of the boss surface and the breaker wall, is greater than the width of a groove formed by the recessed part along the same intersecting line.

The high-efficiency low-deformation machining method suitable for the aviation blade disc comprises the following steps that S1, a cutting force model is constructed based on a ball-head spiral conical milling cutter, a cutting test is carried out, and therefore a cutting force coefficient is determined; s2, performing numerical control simulation on the milling cutter by adopting special software, determining a machining path according to a principle of maximum rigidity of a cutting system, extracting a cutting area and a cutting edge length through the special software on the basis of the machining path so as to calculate real-time cutting force in the machining path, and then constructing a finite element model of the blade disc, carrying out transient mechanical analysis in the blade curved surface coordinate system, adjusting cutting parameters and the inclination angle of a workbench when cutting deformation exceeds a set range, and determining a parameter interval I of the feeding amount and the cutting depth; and S3, modal testing is carried out to obtain modal parameters, then calculation software is adopted to sequentially calculate parameter intervals of different machining parameters and the rotating speed of the main shaft, and effective machining parameters are obtained.

The invention discloses an aluminum alloy plate punching device for constructional engineering, and relates to the technical field of plate punching. The device comprises an operation table, a rack is fixedly mounted on the upper surface of the operation table, a lifting motor is fixedly mounted on the upper surface of the rack, two supporting strips are slidably mounted on the upper surface of the operation table, upper clamping blocks are slidably mounted at the ends, close to the rack, of the two supporting strips, and lower clamping blocks are slidably mounted at the ends, away from the rack, of the two supporting strips; through the arrangement of the operation table, the supporting strips, the lower clamping blocks, the threaded rods, the upper clamping blocks, the fixing blocks, the clamping plates and the threaded blocks, a plate can slide in the four horizontal directions, operation is simplified, the working efficiency is improved, and through the arrangement of the lower clamping blocks, the upper clamping blocks and the clamping plates, the machining efficiency is improved. And the clamping angles of the clamping plates on the two lower clamping blocks and the two upper clamping blocks can be automatically adjusted according to the contact surfaces of the contacted plates, so that the plates in irregular shapes are fixed.

Provided is a surface-coated cutting tool including a complex carbonitride layer on the tool body, wherein a ratio of crystal grains having a NaCl type face-centered cubic structure is 80 area % or more, xavg and yavg satisfy 0.60≤xavg≤0.90 and 0.000≤yavg≤0.050, respectively, a composition of the Ti—Al complex carbonitride layer being represented by (Ti1-xAlx)(CyN1-y), the xavg being an average of x that is an Al content in a total content of Al and Ti, and the yavg being an average of y that is a C content in a total content of C and N, the crystal grains having the NaCl type face-centered cubic structure include crystal grains in which the x repeatedly increases and decreases, the crystal grains include 10 to 40 area % of crystal grains G1 having an average distance of 40 to 160 nm and crystal grains Gs having an average distance of 1 to 7 nm.

A cutting insert in an aspect of the present disclosure has a cutting part. The cutting part has a first surface, a second surface, a third surface located between the first surface and the second surface, and a flow path extending from the first surface toward the second surface. The flow path has an outflow port opening into the first surface, and a first flow path extending from the outflow port toward the second surface. In a first cross section that passes through a central axis of the first flow path and is orthogonal to the first surface, a width of the first flow path in a direction parallel to the first surface increases as going away from the first surface.

A cutting tool comprising a base material and a coating film disposed on the base material, wherein: the coating film includes a first layer; the first layer is formed of a plurality of hard particles; the hard particles are each formed of titanium, silicon, carbon, and nitrogen; the hard particles have a cubic crystal structure; the first layer has a columnar structure; in the first layer, the average of the ratio NSi / (NTi+NSi) of the number NSi of silicon atoms with respect to the total of the number NTi of titanium atoms and the number NSi of silicon atoms is 0.01-0.10; in the first layer, the average of the ratio NC / (NC+NN) of the number NC of carbon atoms with respect to the total of the number NC of carbon atoms and the number NN of nitrogen atoms is 0.60-0.85; the hard particles each have a laminate structure in which a first unit layer and a second unit layer are alternately laminated; the first unit layer and the second unit layer are each formed of the titanium, the silicon, the carbon, and the nitrogen; the ratio x1 of the number of silicon atoms with respect to the total of the number of titanium atoms and the number of silicon atoms in the first unit layer is greater than the ratio x2 of the number of silicon atoms with respect to the total of the number of titanium atoms and the number of silicon atoms in the second unit layer; and the ratio y1 of the number of carbon atoms with respect to the total of the number of carbon atoms and the number of nitrogen atoms in the first unit layer is greater than the ratio y2 of the number of carbon atoms with respect to the total of the number of carbon atoms and the number of nitrogen atoms in the second unit layer.

One deployment (1), showing: a boron nitride sintered body (3) having a first surface (7), a second surface (9) and a cutting edge (13) which is arranged at least on a part of a comb part (11) of the first surface (7) and the second surface (9), wherein the boron nitride sintered body (3) comprises cubic boron nitride and compressed boron nitride, wherein in a transmission X-ray diffraction of a cross-section of the boron nitride sintered body (3) perpendicular to the first surface (7), in a direction perpendicular to the first surface (7) is the X-ray intensity at the tip of a 111 diffraction peak of cubic boron nitride IcBN(111)v and the X-ray intensity at the tip of a 002 diffraction peak of compressed boron nitride IhBN(002)v, in a direction parallel to the first surface (7), the X-ray intensity at the tip of a 111 diffraction peak of cubic boron nitride IcBN(111)h and the X-ray intensity at the tip of a 002 diffraction peak of compressed boron nitride IhBN(002)h, a value for the content of compressed boron nitride, given by (IhBN(002)v+IhBN(002)h) / (IcBN(111)v+IcBN(111)h), is greater than 0.002 and less than 0.01, a cubic orientation value specified by IcBN(111)v / (IcBN(111)v+IcBN(111)h) is greater than 0.5, and an orientation value of the compressed boron nitride specified by IhBN(002)v / (IhBN(002)v+IhBN(002)h) is greater than the cubic orientation value.

The metal cutting insert has a substrate of carbide, cermet or ceramic, and at least one cutting edge defined between a rake face and a flank face. The cutting insert has a CVD coating, and the CVD coating includes a layer of aluminum titanium nitride, has a face-centered cubic lattice structure, and is represented by the formula (Al x Ti 1-x M y )C z N 1-z , where the stoichiometric coefficient of aluminum is 0.30 < x < 0.95, M is at least one element selected from the group consisting of Cl and Ar, the stoichiometric coefficient of M is 0 < y < 0.01, and the stoichiometric coefficient of carbon is 0 ≦ z ≦ 0.3. (Al x Ti 1-x M y )C z N 1-z layer satisfies the relationship 10 < |S1 - S2| < 500 MPa, where S1 is the residual stress measured on the rake face and S2 is the residual stress measured on the flank face.

A cutting insert includes: a rake face; a flank face; and a cutting edge constituted of a ridgeline between the rake face and the flank face. The cutting edge has a first cutting edge portion for corner processing, a second cutting edge portion for pulling processing, a third cutting edge portion for finished-surface processing, a first connection cutting edge portion, and a second connection cutting edge portion. The third cutting edge portion is disposed between the first cutting edge portion and the second cutting edge portion. The first cutting edge portion has a curved shape. A curvature radius of the first cutting edge portion is 0.1 mm or more and 2.4 mm or less. The second cutting edge portion has a straight line shape or a curved shape having a curvature radius of 3 mm or more.

A non-limiting example of the coated cutting tool of the present application has a substrate and a coating layer on the substrate. The coating layer has a first coating layer having a first layer containing Al2O3 particles and a second layer on the first layer. The second layer has, in order from the substrate side, a first film, a second film in contact with the first film, and a third film in contact with the second film. The first film, the second film, and the third film each contain Ti. The first film, the second film, and the third film each contain at least one selected from C and N. When the amount of N contained in the first film is a first N amount, the amount of N contained in the second film is a second N amount, and the amount of N contained in the third film is a third N amount, the following relationship is satisfied: the first N amount > the third N amount > the second N amount.

A cutting tool, including: a base; and a coating disposed on the base, wherein the coating includes a first layer composed of hexagonal W(C1-aNa)x, a represents 0.3 or more and 0.8 or less, and x represents 0.8 or more and 1.2 or less.

A method is provided for modifying a via from a PCB including a plurality of subassemblies comprising a plurality of layers. The method may include drilling a via of the PCB to form a through-hole to remove an unwanted material in the via of the PCB. The method may also include depositing a carbon-based material over an inner wall of the through-hole. The method may further include back drilling a first portion of the through-hole by a drill from the top of the PCB to form a first blind via. The method may also include selectively plating a conductive material over the carbon-based material to form a plated through-hole.

A cutting tool is a cutting tool comprising a substrate and a coating film disposed on the substrate, in which the coating film includes a first layer, the first layer is composed of an alternate layer where a first unit layer and a second unit layer are alternately stacked, the first unit layer is composed of Ti1-a-bAlaCebN, a is 0.350 or more and 0.650 or less, b is 0.001 or more and 0.100 or less, the second unit layer is composed of AlcV1-cN, c is 0.40 or more and 0.75 or less, and a and c satisfy a relationship of c > a.

A coated tool of the present invention includes a substrate and a hard coating on the substrate. The hard coating is a nitride or a carbonitride containing 65 atom % or more and 90 atom % or less of Al and 10 atom % or more and 35 atom % or less of Cr with respect to a total amount of metal elements including metalloid elements, and containing 0.50 atom % or less of argon (Ar), and has a face-centered cubic lattice structure. The hard coating shows a maximum intensity Ia in an α angle range of 80° to 90° in an X-ray intensity distribution on an α-axis in a positive pole figure of a (111) plane of the face-centered cubic lattice structure, and an intensity in an α angle range of 0° to 70° is 35% or less of the maximum intensity Ia.

A cemented carbide includes second hard phase grains each including a carbonitride containing Ti and Nb, wherein each of the second hard phase grains includes a core portion, the core portion is composed of a composite carbonitride represented by (Ti1-X-ZNbXMZC1-YNY), the M is at least one impurity element selected from a group consisting of V, Cr, and Mo, the X is more than or equal to 0.1 and less than or equal to 0.2, the Y is more than or equal to 0.3 and less than or equal to 0.6, the Z is more than or equal to 0 and less than or equal to 0.02, and in a case where a total of 70 unit regions that are each constituted of a square having each side of 8 µm are provided by successively arranging 7 unit regions in a longitudinal direction and 10 unit regions in a lateral direction in an electron microscope image of any cross section of the cemented carbide captured at a magnification of 1500x, where the total number of core portions in the total of 70 unit regions is calculated by counting the number of core portions in each of the unit regions, and where a percentage of the number of core portions in each of the unit regions with respect to the total number of core portions is calculated, the number of unit regions in which the percentage is less than 0.43% or more than 2.43% is less than or equal to 10.

A coated cemented carbide includes: a substrate consisting of a cemented carbide; and a diamond layer disposed directly on at least a portion of the substrate, wherein the cemented carbide includes a tungsten carbide grain and cobalt, the substrate includes an outer region and an inner region, the outer region having a gradient composition in which a content ratio of the cobalt is increased from an interface between the substrate and the diamond layer toward an inner portion of the substrate, the inner region being located on the inner portion side of the substrate with respect to the outer region, the content ratio of the cobalt in the inner region is 2 mass % or more, and a percentage (T2 / T1)×100 of a standard deviation T2 μm of a thickness of the outer region with respect to an average thickness T1 μm of the outer region is 30% or less.

The invention belongs to the technical field of drilling tools, and discloses a coating drilling tool and a machining method.The coating drilling tool comprises a drill tip part, the drill tip part comprises a front tool face and two tool end faces, the two tool end faces intersect to form a chisel edge, each tool end face comprises a first rear tool face, and the first rear tool faces intersect with the front tool face to form a main cutting edge; the drill tip part further comprises a first machining area, the first machining area is arranged on the front tool face and intersects with the main cutting edge, a first micro-texture is arranged in the first machining area, and / or the drill tip part further comprises a second machining area, the second machining area is arranged on the first rear tool face and intersects with the chisel edge and the main cutting edge, and a second micro-texture is arranged in the second machining area. A second microstructure is arranged in the second machining area. The first microtextures and the second microtextures can improve the surface roughness of the front tool face and the first rear tool face, improve the coating binding force, slow down tool abrasion, improve the cutting performance and reduce abrasive particle abrasion and bonding abrasion between interfaces.

The invention relates to a machining device (1) for producing at least one orifice (3) in a part (2) made of composite material, the machining device (1) comprising a tool holder (4) and at least one drill bit (5) mounted on the tool holder (4), the drill bit (5) being intended to be driven in rotation about an axis of rotation (10). According to the invention, the machining device (1) comprises a cylindrical guide body (20) coaxial with the axis of rotation (10), mounted on the tool holder (4), and surrounding the drill bit (5), the guide body (20) being intended to bear on the part (2) during the production of the orifice (3) and the drill bit projecting from the guide body (20). Figure for abstract: Fig.1

A cutting tool for machining titanium alloy or superalloy includes a Me-B-N coating. The Me-B-N coating is Me1-B-N; Me1 is one or more selected from transition metal elements Hf, V, Nb, Ta and Mo, and the atomic percentage of each element is: Me1: 8-40%, B: 15-60%, and N: 10-65%; and the Me-B-N coating includes Me1Nx phase and BN phase; or, the Me-B-N coating is Me1-Me2-B-N, Me1 is one or more selected from transition metal elements Hf, V, Nb, Ta and Mo; Me2 is one or more selected from transition metal elements Ti, Zr, Cr, and W; and the atomic percentage of each element is: Me1: 4-36%, Me2: 4-36%, B: 15-60%, and N: 10-65%; and the Me-B-N coating includes Me1Nx phase, Me2Nx phase and BN phase.