1666results about "Milling cutters" patented technology

In a processing machine, a machine body drives at least one of a workpiece and a tool to process the workpiece by the tool. A processing chamber isolates the workpiece, the tool, and a nozzle from at least part of the machine body while housing the workpiece, the tool, and the nozzle. An internal temperature sensor measures a temperature of an atmosphere in the processing chamber. An external temperature sensor measures a temperature of an atmosphere around the processing machine. A temperature adjustment part raises a temperature of the processing fluid to be supplied to the nozzle when a measured temperature of the internal temperature sensor is lower than a measured temperature of the external temperature sensor, and / or the temperature adjustment part lowers the temperature of the processing fluid to be supplied to the nozzle when the measured temperature of the internal temperature sensor is higher than the measured temperature of the external temperature sensor.

The invention belongs to the technical field of gear machining, and discloses a gear milling blade and a disc-shaped milling cutter. The gear milling blade is installed on the end faces of the two sides of a milling cutter disc and comprises a top edge, a side edge and an auxiliary edge, and the top edge is arranged between the side edge and the auxiliary edge. The outer contour line of the top edge protrudes towards the workpiece to be machined, the outer contour line of the top edge comprises a top edge arc line and a Bezier curve, one end of the top edge arc line is connected with the outer contour line of the side edge, and the other end of the top edge arc line is an end point E; one end of the Bezier curve is connected with the end point E and is tangent to the end point E, and the other end of the Bezier curve is connected with the outer contour line of the auxiliary blade. The gear milling blade has the outline shape of a Bezier curve, and can effectively improve curvature distribution on a tooth root transition curve, increase the curvature radius of the tooth root transition curve and reduce tooth root stress when cutting a tooth groove, so that the tooth root strength of an involute gear is improved.

The invention belongs to the technical field of gear machining, and discloses a gear milling blade and a disc-shaped milling cutter. The tooth milling blade comprises a side edge, a top edge and an auxiliary edge, wherein the top edge is arranged between the side edge and the auxiliary edge; the outer contour line of the top edge protrudes towards the workpiece to be machined, the outer contour line of the top edge comprises a top edge arc line and an oval arc line, one end of the top edge arc line is connected with the outer contour line of the side edge, and the other end of the top edge arc line is an end point E; one end of the elliptic arc line is connected with the end point E and is tangent to the end point E, and the other end of the elliptic arc line is connected with the outer contour line of the auxiliary blade. The tooth milling blade is provided with an elliptical profile curve, so that the curvature distribution on a tooth root transition curve can be effectively improved, the curvature radius of the tooth root transition curve is increased and the tooth root stress is reduced when a tooth groove is cut, and thus the tooth root strength of an involute gear is improved; and meanwhile, the elliptic arc line and the top edge arc line are connected and tangent at the end point E, so that the outer contour line of the top edge is ensured to be smooth.

The utility model discloses a milling cutter convenient to replace, which relates to the technical field of milling cutters, and comprises a milling cutter body and a positioning mechanism, the positioning mechanism comprises a lifting sleeve sleeved on the outer wall of a mounting seat, the bottom of the inner wall of the lifting sleeve is provided with an extrusion circular truncated cone surface, and the outer wall of the mounting seat is provided with a plurality of movable holes; connecting rods are movably connected to the inner walls of the multiple movable holes in a penetrating and inserting mode, and contact mechanisms are arranged between the connecting rods and the milling cutter body. By means of the arrangement of the lifting sleeve, the extrusion circular truncated cone face, the movable hole and the connecting rod, the lifting sleeve moves downwards on the outer wall of the installation base, the extrusion circular truncated cone face extrudes the connecting rod, and therefore the multiple contact mechanisms move at the same time till the multiple contact mechanisms tightly abut against the milling cutter body; therefore, the milling cutter body can be kept coaxial with the mounting seat after being mounted, so that the milling cutter body cannot eccentrically rotate when the mounting seat rotates to drive the milling cutter body to work, and the mounting stability of the milling cutter body is improved.

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 provides a design method for balancing cutting force between cutting edges of a symmetrical gradually-changing end mill, and relates to the technical field of shape characteristics of milling cutters, through the design of the gradually-changing cutting edges, a truncated edge is evolved into a sharp shape, and multifunctionality from rough machining to finish machining is achieved; the gradual change characteristic remarkably improves the chip breaking effect in the cutting process, tool adhesion is effectively prevented, meanwhile, cutting chip breaking is promoted by thinning cutting chips and reducing the bending rigidity of the cutting chips, in addition, due to the symmetrical design of the odd number of cutting edges and the even number of cutting edges, cutting force is balanced, cutting loads are reduced, abrasion is reduced, and the service life of the tool is prolonged. Further, the machining stability is enhanced, and high-quality surface quality and machining precision are ensured; through deep analysis of cutting force and distribution thereof, vibration is effectively reduced through the design, the stability of the cutter is further improved, the service life of the cutter is further prolonged, meanwhile, the fracture state of cuttings is optimized, and the machining efficiency is improved.

The invention relates to the technical field of cutting machining, in particular to a lengthened hard alloy spiral cutter strip and cutting equipment thereof, the cutter strip main body of the spiral cutter strip adopts a 60-degree large spiral angle and a lengthened design, so that a cutter provided with the spiral cutter strip can complete machining of a deep hole or a side wall at a time; the cutting force of the cutter can be more axial, and radial vibration in the cutting process is reduced; the cutting equipment comprises a rack and a bracket fixed to the top of the rack, a feeding part is installed on the rack, and a material changing part is fixedly installed on the bracket. The material changing part comprises a material frame fixed to the bracket, a material conveying belt installed at one end of the bottom of the material frame, a material stirring assembly installed in the middle of the material frame and a material clamping assembly used for stopping the material stirring assembly, and the material changing part further comprises an embedding groove, a clamping plate and a clamping positioning assembly. And a target piece on a machining station can be automatically clamped and corrected.

A cutting tool includes a tool body having at least one seat for receiving a cartridge or a cutting insert. The seat includes at least one support surface. The cutting tool body includes a sensor retaining structure adjoining the support surface and a piezo sensor arranged in the sensor retaining structure. The cutting tool has a clamping device for securing the cartridge or cutting insert. The piezo sensor is an elastically deformable piezo sensor, which has a central longitudinal axis and a direction of sensitivity perpendicular to the central longitudinal axis. The piezo sensor has a measuring section, along which the central longitudinal axis is substantially parallel to the support surface. The piezo sensor is elastically deformed in the sensor retaining structure to a pre-stressed initial state and deformable to a plurality of further stressed measuring states.

The utility model discloses an efficient crankshaft numerical control external milling machine tool, which relates to the field of machining equipment and comprises a machine tool body, at least two tool rest boxes are movably arranged on the upper portion of the machine tool body, the tool rest boxes are arranged on a sliding plate, the sliding plate is connected with a sliding saddle through an X-axis feeding system, and the sliding saddle is connected with a lathe through a Z-axis feeding system. The left spindle box is fixedly arranged on the lower portion of the lathe bed, the right spindle box corresponds to the left spindle box and is arranged on the lathe bed in a sliding mode, and the left spindle box and the right spindle box are used for being connected with the end of a crankshaft; the left center frame and the right center frame are arranged between the left spindle box and the right spindle box, the left center frame is fixed to the lathe bed, the right center frame is arranged on the lathe bed in a sliding mode, and the left center frame and the right center frame are used for clamping the middle of the crankshaft; the machining machine tool can achieve efficient and accurate machining of crankshafts, and the production requirements of crankshafts of different varieties and specifications are met.

The utility model provides an anti-chip-sticking metal ceramic milling cutter. The anti-chip-sticking metal ceramic milling cutter comprises a connecting column, the knife handle is arranged in the connecting column; the tool bit is arranged at one end of the tool handle, a chip removal groove is formed in a chip cutting part of the tool bit, and the tool handle and the tool bit are made of metal ceramic materials. The threaded rod is rotated to drive the conical block to move upwards, so that the threaded rod is separated from the screw hole, at the moment, the trapezoidal block is reset through the spring, the fixing rod is separated from the inserting hole, and then the extending length of the tool bit can be adjusted; and meanwhile, the conical block moves downwards to extrude the trapezoidal block and the fixing rod to move and compress the spring, so that the fixing rod extends into the insertion hole, and the cutter handle is fixed through the threaded rod and the fixing rod, so that the effect of adjusting the overall length of the milling cutter according to use requirements is achieved, and the use flexibility, applicability and efficiency of the milling cutter are effectively improved.

By analyzing the micro-texture of the machined surface, inverse estimation of tool mounting eccentricity is realized on the machine tool. [Solution] Under predetermined workpiece parameters, simulation machining is performed based on multiple parameter sets obtained based on different tool parameters, tool attitude parameter settings, and cutting parameters, and the surface shape after machining for each parameter set is obtained. An optimization variable set is constructed based on each parameter set, and the optimization variable set when waviness is most sensitive to changes in tool mounting eccentricity is determined. The tool mounting eccentricity during machining of the workpiece sample is calculated using the constructed relationship between the tool mounting error and the peak-to-peak value of waviness. If the tool mounting eccentricity exceeds the predetermined value, the bull nose end mill is reattached and the workpiece sample is replaced so that the workpiece can be actually machined, and this calculation of tool mounting eccentricity is repeated until the tool mounting eccentricity becomes smaller than the predetermined value.

The invention relates to the technical field of turning and milling machining, in particular to a double-spindle turning and milling combined machining center and a control method. The machining center comprises a base, a turning mechanism, a milling mechanism, a tool changing mechanism and a tool magazine; the turning mechanism and the milling mechanism are distributed on the base side by side in the Y-axis direction. The tool magazine is fixedly mounted on one side of the milling mechanism, a plurality of tools are detachably mounted on the tool magazine, and the tools circularly rotate along the edge of the tool magazine; and the tool changing mechanism is mounted above the turning mechanism, and the tool changing mechanism is used for moving between the milling mechanism and the tool magazine and is matched with the tool machining shaft to realize automatic tool changing. The technical problems that in the prior art, lathing and milling mostly depend on independent equipment to be implemented step by step, so that the machining precision is low, and the machining quality is poor can be solved.

The utility model discloses a facing cutter assembly with internal cooling, which relates to the field of facing cutters, and comprises a facing cutter body, a plurality of blade grooves are formed in the bottom surface of the facing cutter body at equal angle intervals, and tool bits are fixed on the flat and straight surfaces of the inner walls of the blade grooves through bolts; according to the milling cutter assembly with the internal cooling function, the arc-shaped cooling cavity and the cooling liquid flow channel are arranged, effective air cooling heat dissipation can be conducted on the cutter body through air flow, meanwhile, the cooling liquid flow channel is used for continuously injecting cooling liquid into the arc-shaped cooling cavity, the cooling liquid is powerfully blown away due to high-speed flowing of the air flow, and the cooling effect is improved. The cooling liquid forms a high-speed and uniform spray shape in the arc-shaped cooling cavity, so that the high-speed flowing cooling liquid not only greatly enhances the heat exchange efficiency with the cutter head body and the cutter head, but also effectively takes away a large amount of heat through the high speed of the cooling liquid.

The invention provides a lemniscate-shaped annular milling cutter and a design method, and relates to the technical field of milling cutter design, the lemniscate-shaped annular milling cutter comprises a cutter head part and a cutter handle part, the cutter head part is composed of an end edge part and a circumferential edge part, and the end edge part rotates by adopting a rotation generatrix composed of a Bernoulli lemniscate boundary curve and a transition arc to form a lemniscate ring surface; a spiral cutting edge is generated through an equal-spiral-angle edge line model, so that uniform distribution of cutting force and smooth chip removal are ensured; and the circumferential blade part intersects with the equal-helix-angle blade line through the cylindrical surface to form a spiral cutting edge. According to the design, cutting vibration is reduced through the variable curvature characteristic of the lemniscate, cutting force distribution is optimized, and meanwhile the chip removal capacity is improved by combining the equal helix angle design.

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.

To provide a cutting insert, a body, and a cutting tool capable of suppressing a thickness while being usable by switching four cutting edges.SOLUTION: A cutting insert 30 attached to a body 20 of a cutting tool 10 includes: a first surface 110 having a substantially parallelogram shape, including one end surface among a pair of end surfaces facing each other, and functioning as a surface including first rake surfaces 151, 152; a pair of first cutting edges 511, 512 formed along a pair of sides 111, 113 facing each other among sides defining the first surface 110; second surfaces 210, 220 having a substantially trapezoidal shape, including a pair of side surfaces facing each other, and functioning as a surface including second rake surfaces 621, 622; and second cutting edges 521, 522 formed along one side 201, 203 among sides defining the second surfaces 210, 220.SELECTED DRAWING: Figure 1

This surface-coated cutting tool comprises a base including a WC-based cemented carbide, and a coating layer provided on the base and comprising a lower layer and an upper layer overlying the lower layer, wherein the lower layer has an average thickness of 5-500 nm and has a composition represented by the formula WxTi1-x-y-z-sAyCzNs (A is at least one element selected from the group consisting of Cr, Ta, Nb, and V, the average of x, xavg, satisfies 0.05≤xavg≤0.30, the average of y, yavg, satisfies 0.00≤yavg≤0.05, the average of z, zavg, satisfies 0.00≤zavg≤0.10, the average of s, savg, satisfies 0.05≤savg≤0.30, and xavg≥2×zavg is satisfied) and the upper layer has an average thickness of 0.3-6.0 μm and has a composition represented by the formula AldM11-dN (M1 is at least one element selected from the group consisting of Ti, Cr, Ta, B, Si, Mo, and W, and the average of d, davg, satisfies 0.20≤davg≤0.80).

A coated tool according to the present disclosure comprises a substrate, a first coating layer, a second coating layer, and a third coating layer. The first coating layer contains Al, Ti, Cr, and N. The second coating layer includes a first film and a second film. The first film contains Al, Ti, Cr, and N and has a Ti / Al ratio higher than that of the first coating layer. The second film contains Al, Ti, Cr, and N and has a Cr / Al ratio higher than that of the first coating layer. The third coating layer includes a third film and a fourth film. The third film contains Al, Ti, Cr, and N and has a Ti / Al ratio higher than that of the first film. The fourth film contains Al, Ti, Cr, and N and has a Cr / Al ratio higher than that of the second film.

The present invention ensures that, when replacing a cutting insert, chips are less likely to become trapped between the cutting insert and the seat surface of a pocket. The pocket includes: the seat surface; a first restraining surface that faces a first main side surface of the cutting insert; a second restraining surface that faces a second main side surface of the cutting insert; and a recessed surface portion that is positioned between the first restraining surface and the second restraining surface, and faces a corner side surface of the cutting insert. A coolant flow path includes a first opening portion that opens to the recessed surface portion.

A coated cutting tool including: a base material; and a hard coat over the base material. The hard coat is a nitride or a carbonitride containing titanium (Ti) at 60 atom% or more and 95 atom% or less and silicon (Si) at 5 atom% or more and 40 atom% or less with respect to the total amount of metals including a metalloid. In the hard coat, in a case where a total of metal elements including a metalloid, and non-metal elements is set to 100 atom%, an atomic ratio (atom%) A of the metal elements including the metalloid and an atomic ratio (atom%) B of nitrogen satisfy a relationship of 1.1 < B / A. In the hard coat, a crystal structure is a cubic crystal and a full width at half maximum of a (200) plane of the cubic crystal in X-ray diffraction is 0.75° or more and 1.10° or less.

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.

The utility model discloses an alloy milling cutter which comprises a first cutter handle, a second cutter handle is arranged in the first cutter handle, and fixing blocks are fixedly connected to the outer walls of the two sides of the second cutter handle. In the actual use process, the first cutter handle is installed on a machine, and the first cutter point is used for machining a workpiece. When the cutter handle needs to be replaced, the connecting block is pushed downwards, the connecting block is limited in the inner groove, the second cutter handle is driven through the fixing block, the fixing block is limited in the sliding groove, the second cutter handle is pushed out, the second cutter point is exposed, the adjusting screw rod is rotated, the connecting sleeve and the ejection block are driven, the ejection block is limited in the inner cavity, the inclined face of the ejection block pushes the positioning block into the positioning groove, the second cutter handle is fixed, and the limiting block is limited in the limiting groove. By means of the structure, the problems that an existing milling cutter needs to be detached for replacement and is low in efficiency are solved, replacement in a traditional mode is tedious and time-consuming, and the structure achieves rapid cutter replacement without detachment, shortens cutter replacement time, improves machining efficiency through cooperation of components, and enables the milling cutter to be replaced more conveniently and efficiently.

The problem to be solved by the present invention is to provide a milling cutter having a tip that can be replaced with ease at low cost.　The milling cutter has: a blade part 10 that has a plurality of tips 12 each provided with a bottom blade 121 and an outer peripheral blade 122, and a blade body part 11 which is a plate-like body to which the plurality of tips 12 are fixed at an outer periphery and has grooves 113 formed to match the positions of the tips 12; and a body 20 having a front end part 21, which has a front end surface to which the rear end surface of the blade body part 11 is fixed in a contactable and detachable manner, and a front end outer peripheral section which has an outer diameter of 100 / 100-92 / 100 with respect to the outer diameter of the blade part 10 and in which body-side grooves 211 continuous to the grooves 113 of the blade body part 11 in close contact are formed, the body 20 being rotatable about a rotation axis. A blade part mounting hole 11a is formed in the center of the blade body part 11, and a body mounting hole / orifice is formed in the center of the front end part 21. By inserting a fastening bolt in which the outer peripheral surface of the shaft part is in close contact with the inner peripheral surface of each mounting hole into the hole, radial positioning becomes possible.

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 processing device comprising a receiver configured to receive from a cutting tool an output value of a sensor mounted on the cutting tool, a processor configured to calculate a physical quantity related to the cutting tool from the output value received by the receiver, and a displayer configured to display an image including a graph representing time-series data of the physical quantity and a distribution image representing distribution of the physical quantity.

The utility model discloses a multifunctional milling cutter integrating milling and double-sided chamfering. The multifunctional milling cutter consists of a profiling cutter part, a milling cutter part and a cutter handle part, the profiling cutter part is connected with the milling cutter part, and the milling cutter part is connected with the cutter handle part; the diameter of the milling cutter part is slightly smaller than that of the cutter handle part which can be matched with the milling cutter chuck; the diameter of the milling cutter part is the same as that of the bottom of the profiling cutter part; the profiling cutter part comprises a profiling cutter part blade and a profiling cutter part chip groove; the milling cutter part comprises a milling cutter part blade and a milling cutter part chip groove; the number of the profiling cutter part blades, the profiling cutter part chip grooves, the milling cutter part blades and the milling cutter part chip grooves is four. And the profiling cutter part chip removal groove is continuous with the milling cutter part chip removal groove. One-time forming can be achieved, chamfers on the two sides are consistent in size, machining efficiency is improved, cost is reduced, and the machining method is suitable for machining of various production part flanges; the problem that the number of tool positions of the tool turret of the numerical control lathe is insufficient can be solved, the machining period is shortened, and the method plays an important role in reducing process cost and improving energy and efficiency for enterprises.

The utility model provides a combined cutterhead which comprises a cutter handle, a cutterhead installation portion is arranged at the front end of the cutter handle, a second cutterhead and a first gasket, the first cutterhead, the second gasket and a third cutterhead are sequentially installed on the cutterhead installation portion, a plurality of first blades are arranged on the circumference of the first cutterhead, the first blades are three-face-edge blades and can conduct cutting on three faces, and the third cutterhead is a three-face-edge blade. A plurality of second blades are arranged on the outer circumference of the side, facing the first cutter disc, of the second cutter disc in the circumferential direction, the second blades are two-face-edge blades and can cut the two faces, a plurality of third blades are arranged on the outer circumference of the side, facing the first cutter disc, of the third cutter disc in the circumferential direction, the third blades are two-face-edge blades and can cut the two faces of the third cutter disc. And cutting on two surfaces can be carried out. The combined cutter head can complete inside and outside opening of the joint fork at a time, machining steps are reduced, machining efficiency and precision are improved, the blades can be replaced, and the cutter using cost is saved.

The utility model discloses a combined tool for machining a thrust surface of an engine cylinder block, which relates to the technical field of machining the thrust surface of the engine cylinder block and comprises a fixing plate, a lifting adjusting mechanism is arranged on one side of the fixing plate and comprises a support frame, and the support frame is fixedly connected to one side of the fixing plate. Through the arrangement of the lifting adjusting mechanism, the function of lifting and adjusting the height of the cutter according to the heights of different engine cylinder bodies can be achieved, in the using process, the first motor is started to drive the cutter body to ascend and descend to a proper height, and in the lifting process of the cutter body, the sliding block slides on the outer wall of the sliding rail, so that the cutter body can be lifted and descended. According to the combined cutter, the cutter body can ascend and descend more stably and smoothly, the situation that the height of an engine cylinder body is high or low and the cutter cannot normally mill a thrust surface due to the fact that the height of the combined cutter cannot be adjusted according to the height of an engine can be avoided, and the flexibility and the application range of the combined cutter are guaranteed.

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.

To provide a workpiece holder capable of measuring a position and a direction of a held workpiece.SOLUTION: A workpiece holder (3) couples a workpiece (2) provided with reference surfaces (30) to a machining device for manufacturing a rotational-symmetrical tool having at least one geometrically defined cutting edge. The workpiece holder (3) comprises: a machining portion part configured to be connectable to the machining device in a releasable rotationally fixed manner; and a clamping portion configured to receive and clamp the workpiece (2) in a releasable manner. The clamping portion of the workpiece holder (3) comprises at least one slot (40) provided at a circumference thereof and configured to provide access to the reference surfaces (30) of the clamped workpiece (2) through the slot (40).SELECTED DRAWING: Figure 4