1260results 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 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.

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.

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.

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.

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 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

The invention provides a dual-V-shaped clamping multi-specification adaptive modular cutter with chip removal and cooling functions, and relates to the technical field of hole machining cutters, the dual-V-shaped clamping multi-specification adaptive modular cutter comprises a cutter bar and a cutting head, the cutting head is provided with a connecting hole, and a positioning rod is arranged at the lower end of the cutting head; the top of the cutter bar comprises a V-shaped end, the inner side of the V-shaped end comprises two V-shaped faces, and the V-shaped end penetrates through the connecting hole through a locking bolt to achieve fixation of the cutter bar and the cutting head. A positioning hole is formed in the bottom of the V end, a pre-tightening assembly matched with the positioning hole is arranged at the lower end of the positioning rod, five-face positioning of the cutting head is achieved through matching of the V end on the cutter bar and the supporting face, in the installation process, by installing the pre-tightening assembly in advance, the cutting head can be conveniently installed in the V end, pre-tightening force can be provided, and therefore the cutting head can be installed conveniently. And the cutting head and the V end can be conveniently fixed by the locking bolt.

The anti-loosening 90-degree corner milling shaft cutter handle comprises a middle bearing fixing seat, a cutter changing fixing ring, a cutter handle body and a gear box body, the middle bearing fixing seat is located at the upper end of the gear box body, the cutter changing fixing ring is rotationally arranged at the upper end of the middle bearing fixing seat, and an anti-loosening clamping groove is formed in the outer edge of the cutter changing fixing ring; a connecting seat is arranged on one side of the middle bearing fixing seat, an elastic nut is elastically installed on the connecting seat, an anti-loosening pressing rod is hinged to the connecting seat, one end of the anti-loosening pressing rod is connected with the elastic nut, the other end of the anti-loosening pressing rod is pressed in the anti-loosening clamping groove, and the lower end of the gear box body is connected with a transmission piece. According to the anti-loosening 90-degree corner milling shaft cutter handle with the pre-tightening force, the anti-loosening pressing rod is controlled by the elastic structure to press the cutter changing fixing ring, so that the cutter can be fixedly locked at a single position after cutter changing is completed every time, and the mounting stability after cutter changing is guaranteed.

The invention relates to the technical field of part machining, and discloses a multi-station anti-vibration cutter stabilizing mechanism for carbon fiber part machining, which comprises a cutter chuck arranged on machining equipment; the milling cutter is used for machining parts; and the clamping mechanism is arranged on the cutter chuck and used for stably clamping the milling cutter, the clamping mechanism comprises a hollow sleeving ring, and the hollow sleeving ring axially moves after rotating. According to the multi-station anti-vibration cutter stabilizing mechanism for machining the carbon fiber parts, the positioning mechanism is arranged, and an axial hard positioning structure capable of being locked is arranged at the end of a milling cutter, so that end mechanical jacking and position locking are synchronously achieved after radial clamping of the cutter is completed, and the overall axial supporting rigidity of the cutter is remarkably improved; axial micro-motion and chatter caused by axial cutting force change and multi-station frequent reversing in the carbon fiber machining process are effectively restrained, and the quality defects such as layering and chatter marks on the machined surface are avoided.

A rotary cutting method includes producing a processed product by rotary cutting of a workpiece by a rotary tool. The rotary tool has at least one cutting edge of which both of a first rake angle in a rotation radial direction and a second rake angle in a rotation axis direction are negative. The at least one cutting edge has a slanted face connected with a rake face forming the first and second rake angles. The slanted face is connected with the rake face at a ridge line. The slanted face faces a rotating direction of the rotary tool. An angle of the slanted face to the rotation axis direction is positive.

A crescent-edge hard alloy milling cutter and a parameter design method thereof relate to the technical field of milling cutter design. The crescent-edge hard alloy milling cutter includes a front cutter head, a peripheral blade portion, and a shank portion, where a plurality of crescent peripheral blades extending helically toward the front cutter head are provided on the peripheral blade portion; a plurality of crescent cutting blades are provided on the front cutter head; and the crescent cutting blade and the crescent peripheral blade are in arc transition in pairs. With the design of the crescent cutting blade and the crescent peripheral blade, the crescent-edge hard alloy milling cutter has excellent cutting performance. Moreover, the crescent cutting blade and the crescent peripheral blade are in the arc transition, ensuring smoothness of the milling cutter to cut a metal workpiece.

A surface coated cutting tool is provided, in which a TiAlCN layer having an average layer thickness of 2.0 to 20.0 µm and represented by (Ti(1-x)Alx)(CyN(1-y)) is provided on a surface of a tool body 100, an average content ratio xavg of Al and an average content ratio yavg of C satisfy 0.60 ≤ xavg ≤ 0.95 and 0.00 ≤ yavg ≤ 0.05, an area ratio occupied by crystal grains having an NaCl-type face-centered cubic structure satisfies 90 area% or more, and when a crystal grain size d of each crystal grain in an upper layer side region obtained by bisecting the TiAlCN layer in a layer thickness direction is obtained, crystal grains 21 satisfying 0.01 µm <d ≤ 0.20 µm exist in 10 to 40 area% with respect to an entire area, and an average value of a maximum length in a direction parallel to the surface of the tool body 100 in each region in which the crystal grains having d of 0.01 µm <d ≤ 0.20 µm are adjacent and connected to each other in the upper layer side region is 5.0 µm or less.

The utility model discloses an anti-wear milling cutter for machining mechanical parts, which comprises a cutter bar, a cutter head is fixed at the bottom end of the cutter bar, and a liquid supply mechanism is sleeved outside the cutter bar; the liquid supply mechanism comprises a rotating shell. Through the rotating hole and the limiting groove, the rotating shell is rotationally connected with the cutter bar, meanwhile, the limiting ring is attached to the cutter bar, the circulating hole and the feeding hole can be communicated conveniently when the cutter bar rotates, cooling liquid can enter and flow out through the discharging hole, the lubricating and heat dissipation effects are achieved in the milling cutter turning process, excessive friction is avoided, and the anti-abrasion effect is achieved; one end of the sleeve is in threaded connection with the rotating shell, and the other end of the sleeve is in threaded connection with the infusion tube, so that quick disassembly and assembly are facilitated, cooling liquid is supplied, and the rotating shell is limited to avoid rotation along with the cutter bar to improve stability.

The utility model discloses a double-edge dislocation cutting round nose milling cutter which comprises a supporting plate, a transmission rod, a bearing plate, a limiting plate, a linkage toothed plate, a round nose milling cutter and a linkage adjusting mechanism, the supporting plate is fixed on an external machine tool, the transmission rod is rotatably connected to the supporting plate, the bearing plate is rotatably connected to one end of the transmission rod, the limiting plate is fixed on one side of the bearing plate, and the linkage toothed plate is fixed on the other side of the bearing plate. The linkage toothed plate is clamped in the limiting plate in a sliding mode, and the round nose milling cutter is arranged at one end of the linkage toothed plate. The linkage adjusting mechanism has the beneficial effects that the driven fluted disc is meshed and linked with the linkage toothed plate through the synchronous linkage structure of the first cam, the second cam and the transmission rod in the linkage adjusting mechanism and the phase difference design of cam curves, so that the axial adjustment of the round nose milling cutter is realized, and the service life of the round nose milling cutter is prolonged. And meanwhile, the second abutting plate rotates to drive the bearing plate to deflect, radial adjustment of the round nose milling cutter is achieved, axial feeding and radial compensation motion are coupled to a single driving system, and continuous track control over a milling path is achieved.

The utility model belongs to the technical field of cutters, and discloses an end mill, which is characterized in that bottom blades are distributed on a revolution surface formed by rotation of a 1 / 4 ellipse around a central axis of a cutting part, so that a tool cutting edge angle is gradually and slowly increased in the direction from the center of the end mill to the periphery of the end mill, and one end, connected with a circumferential blade, of each bottom blade can also be used for cutting. And under the same cutting depth, cuttings become thinner and longer, and the thinning cutting effect is better during fast feeding, so that the machining efficiency of difficult-to-machine materials such as titanium alloy and high-temperature alloy is improved. The end, connected with the circumferential edge, of the bottom edge is used for increasing the maximum cutting depth after cutting, and the front angle corresponding to the bottom edge is gradually increased in the radial direction, away from the central axis of the cutting part, of the cutting part, so that the end, close to the circumferential edge, of the bottom edge is sharper, cutting resistance is reduced, cutting force and cutting heat are reduced, and the wear resistance of the cutter is improved; and the service life of the cutter is prolonged.