1149results about "Workpieces" patented technology

A method of manufacturing a part includes removing material with a cutting machine (11) to form a plurality of segments (13A-13D, 14A-14D, 15A-15D), at least two of the segments including an anchoring structure, connecting two or more segments to form a first layer, and connecting two or more additional segments to form a second layer. The method also includes connecting the first layer to the second layer and connecting a support structure directly to two of the anchoring structures.

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 invention relates to a tool holder for the, in particular force-fit, mounting of a tool, in particular a rotary tool, and to a kit, in particular for such a tool holder. The tool holder comprises a receiving body which has a rotary axis, a rear interface for receiving the tool holder in a work spindle of a machine tool, a front receiving section for the force-fit retention of the tool, in particular the rotary tool, a coolant bore arranged along the rotary axis between the interface and the receiving section, by means of which coolant can be guided along the rotary axis from the interface to the receiving section and which has a first area with a second area adjoining it in the direction of the rotary axis towards the receiving section, wherein a diameter of the first area is larger than a diameter of the second area, and a coolant pipe arranged in the first area of ​​the coolant bore which has a diameter larger. Towards the receiving section, a cavity is formed in the receiving body or in the first area with the increased diameter between the coolant pipe and the smaller diameter second area of ​​the coolant bore. To improve the coolant flow and thus the cooling of a tool, the tool holder is designed with a bridging element in the cavity between the coolant pipe and an interface-side end of the smaller diameter, second area. This bridging element is designed to allow coolant flow and seal the coolant flow against the cavity.

This drill has an integrally formed extension (3) at its front end, which is smaller in diameter than the other drill bit (1). The extension (3) at the front end of the drill bit (1) preferably has a diameter d that is half the diameter D of the remaining drill bit (1) located behind the extension (3). The drill bit allows for perfect positioning, centering, and guidance of the hole along the intended drilling line.

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 invention discloses a titanium alloy material cutting tool and a machining method, and the machining method comprises the following steps: proportioning a hard phase WC, a binding phase and an additive according to a ratio, carrying out ball milling, spray drying and compression molding to obtain a tool blank, carrying out segmented sintering treatment, machining and molding to obtain the cutting tool, and then carrying out heat treatment to obtain the titanium alloy material cutting tool. Sequentially carrying out electromagnetic coupling strengthening treatment and surface coating plating treatment to form a TiN layer, a CrAlN layer, a CrAlSiN layer and a CrAlBN layer; the titanium-based alloy powder is added into the binding phase, so that the high-temperature strength, the heat resistance and the lightweight characteristic of the cutting tool can be enhanced; the modified CeO2 can improve the microstructure uniformity, the interface bonding force and the oxidation resistance of the cutter, so that the density and the crack resistance are improved; electromagnetic coupling strengthening treatment and multi-layer coating deposition treatment are carried out on the cutting tool, the hardness, wear resistance, oxidation resistance and high temperature resistance of the surface of the tool can be remarkably improved, and meanwhile coating stripping is effectively prevented.

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.

The invention relates to the technical field of coated cutters, and provides a cutting tool with a high-hardness self-lubricating coating and a preparation method of the cutting tool. The cutting tool comprises a tool base body and the coating formed on the tool base body; the coating is of a multi-layer structure and sequentially comprises a first sub-coating, a first gradient layer, a second sub-coating, a second gradient layer and a third sub-coating from inside to outside. The content of Si in the first gradient layer is increased in a gradient mode from inside to outside and is not higher than the content of Si in the second sub-coating; the content of B in the second gradient layer is increased in a gradient mode from inside to outside and is not higher than the content of B in the third sub-coating.

The invention relates to the technical field of coated cutting tools, and provides a chemical vapor deposition hafnium boride multilayer coated cutting tool and a preparation method thereof.The chemical vapor deposition hafnium boride multilayer coated cutting tool comprises a base body and multiple coatings sequentially arranged on the surface of the base body; the multi-layer coating comprises a first sub-coating HfBN layer and a second sub-coating HfBx layer, and x is larger than or equal to 1.8 and smaller than or equal to 2.2; the first sub-coating HfBN layer is composed of HfB2, HfN and a BN phase, the volume fraction of the HfB2 phase is 60-90%, and the first sub-coating HfBN layer grows in a columnar crystal mode; the second sub-coating HfBx layer grows in a columnar crystal mode, and the grain size of the second sub-coating HfBx layer is larger than that of the first sub-coating HfBN layer. The high-wear-resistance and low-friction-coefficient cutting fluid has high wear resistance, high bonding strength, high adhesion resistance and low friction coefficient, so that the cutting machining requirements of difficult-to-machine materials such as stainless steel, titanium alloy and nickel-based high-temperature alloy are met.

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 relates to a turning device for cutting a workpiece, comprising: a workpiece holder configured to receive the workpiece and driven in rotation about a virtual axis of rotation; the turning tool is provided with a cutter; a main feed drive which causes a main feed movement in the feed direction, the turning tool and the workpiece holder being movable close to or away from each other by means of the feed movement; the turning tool and the axis of rotation can be moved closer to or away from each other by means of the main transverse movement, and a secondary transverse drive for driving the turning tool and the axis of rotation to move closer to or away from each other by means of the main transverse movement. The secondary transverse movement of the secondary transverse drive is oriented in the same direction as the transverse movement of the primary transverse drive, wherein the turning tool and the axis of rotation can be moved close to and away from each other by superposition of the primary and secondary transverse movements.

To provide a coated cutting tool which can extend a tool life in both high speed working and high feed working.SOLUTION: A coated cutting tool includes a base material, and a coating layer formed on the base material, wherein the coating layer has a first alternately laminated structure that two or more layers A and layers B are alternately formed, the layer A contains (AlaCrbTi1-a-b)N, the layer B contains (AlcTi1-c-dBd)N, average thickness of the first alternately laminated structure is 0.50 μm or more and 10.00 μm or less, and average thickness per one layer of each of the layers A and the layers B in the first alternately laminated structure is 2 nm or more and 300 nm or less.SELECTED DRAWING: Figure 1

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

This drill (1) comprises a shaft-shaped tool body (10) that is rotated about a central axis, the drill having a chip discharge groove (14) formed on the outer periphery of the tool body (10), and a cutting blade (15) formed at an intersecting ridge portion between the chip discharge groove (14) and a tip flank (13) of the tool body (10)). The tool body (10) has a base material and a hard coating (17) formed in a region of a prescribed length from the tip of the base material. The chip discharge groove (14) has, in the central axis direction, in order from the tip of the tool body (10), a first section (S1) having a first surface roughness and a second section (S2) positioned closer to the rear end side than the first section (S1) and having a second surface roughness less than the first surface roughness. The first section (S1) has a length of at least 0.5 times a tool diameter (D). The hard coating (17) is formed in the first section (S1), and a hard coating (S17) is not formed in the second section (S2).

The invention belongs to the technical field of hard alloy material preparation, and relates to a high-hardness and high-strength hard alloy coating blade which comprises a base body and a coating. The matrix raw materials comprise the following components in percentage by weight: 89-90% of tungsten carbide WC, 6-7% of Co, 1-3% of a tungsten-titanium solid solution and 1-3% of a tantalum-niobium solid solution; the coating comprises an AlTiN substrate layer, a TiAlSiN functional layer and a TiSiN surface layer. The high-hardness and high-strength hard alloy matrix is prepared by adding the reinforcing solvent, and the coating with the specific gradient composite structure is deposited by combining the arc ion plating technology, so that the internal defects of the coating are reduced, the internal stress of the coating is reduced, the toughness and the film-substrate binding force of the coating are improved, and the coating is uniform and compact, has high hardness and high-temperature oxidation resistance, and can be applied to the field of high-temperature-resistant coating. The service life of the blade is greatly prolonged through good matching of the coating and the blade base body.

A method for producing a cutting tool including a tool body including a hard coating, the method comprising: applying the hard coating to the tool body at least in an area of a cutting edge, a flank, and a chipping surface; depositing the hard coating on a surface of the tool body, of the cutting tool in an area of the cutting edge, of the flank adjacent to the cutting edge, and of the chipping surface adjacent to the cutting edge; sharpening the cutting edge that is provided with the hard coating and that forms a dull rounded edge by partially removing the hard coating in the area of the flank of the cutting edge by laser machining to form a sharpened cutting edge so that an angle δ is enclosed between a first geometric plane in which a surface of the tool body extends.

A cutting insert includes a first and a second pair of opposing side surfaces. As seen towards a first side surface, a first axial relief face and a first axial abutment face form part of a first surface grouping on a first side of a longitudinal plane. As seen towards a second side surface, a second axial relief face and a second axial abutment face form part of a second surface grouping on the first side of the longitudinal plane. The first axial abutment face forms a substantially flat surface and extends perpendicularly to a median plane of the insert. The second axial abutment face forms a substantially flat surface and extends perpendicularly to the median plane. A second side surface of the first pair of opposing side surfaces has a first and a second radial abutment face.

A method of manufacturing a drill bit includes providing a piece of bar stock having a first end, a second end opposite the first end, and an axis of rotation extending centrally through the bar stock between the first and second ends, cutting the first end of the bar stock to form a first tip angle at an oblique angle measured through the axis of rotation, cutting the first end of the bar stock at a second tip angle measured through the axis of rotation to form first tip surfaces and second tip surfaces. The first tip surfaces have the first tip angle and the second tip surfaces have the second tip angle. The second tip angle is smaller than the first tip angle. Finally forming a flute in the bar stock between the first and second ends and forming a shank at the second end of the bar stock.

The present invention relates to a metallic fluid tube (100) for a fluid connection arrangement (300) comprising: a metallic tube wall (101) having an inner tube wall (103) which defines an interior space (105) of the fluid tube (100), and having an outer tube wall (107) which faces away from the interior space (105) of the fluid tube (100) and towards an exterior space (109) of the fluid tube (100), wherein the tube wall (101) has a tube end (113) with a tube opening (115) which connects the interior space (105) of the fluid tube (100) with an exterior space (109) of the metallic fluid tube (100), wherein the tube wall (101) has a raised section (117) which surrounds the outer tube wall (107) and is spaced apart from the tube end (113), wherein the The outer surface of the pipe wall (107) has a circumferential sealing geometry (119),which is designed to provide a fluid-tight connection between the metallic fluid tube (100) and another fluid-carrying component (301) of the fluid connection arrangement (300), and wherein the circumferential sealing geometry (119) extends on the outside of the tube wall (107) from the raised section (117) to the tube end (113), and wherein the circumferential sealing geometry (119) has rotary grooves (121) which extend along a groove extension direction (123), wherein the groove extension direction (123) is transverse to a longitudinal extension direction (111) of the fluid tube (100).

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.