WO2010073681A1 - 切削用インサートおよびこれを用いた刃先交換式歯切工具 - Google Patents
切削用インサートおよびこれを用いた刃先交換式歯切工具 Download PDFInfo
- Publication number
- WO2010073681A1 WO2010073681A1 PCT/JP2009/007215 JP2009007215W WO2010073681A1 WO 2010073681 A1 WO2010073681 A1 WO 2010073681A1 JP 2009007215 W JP2009007215 W JP 2009007215W WO 2010073681 A1 WO2010073681 A1 WO 2010073681A1
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- Prior art keywords
- insert
- cutting
- cutting edge
- tool
- rake
- Prior art date
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- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010042674 Swelling Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
- B23F21/12—Milling tools
- B23F21/14—Profile cutters of disc type
- B23F21/143—Profile cutters of disc type with inserted cutting elements
- B23F21/146—Profile cutters of disc type with inserted cutting elements in exchangeable arrangement
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/17—Gear cutting tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/17—Gear cutting tool
- Y10T407/1715—Hob
- Y10T407/173—Hob for cutting involute gear tooth
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
- Y10T407/1908—Face or end mill
- Y10T407/1924—Specified tool shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
- Y10T407/1942—Peripherally spaced tools
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/24—Cutters, for shaping with chip breaker, guide or deflector
- Y10T407/245—Cutters, for shaping with chip breaker, guide or deflector comprising concave surface in cutting face of tool
Definitions
- the present invention relates to a cutting insert used for gear cutting for cutting a tooth gap such as a gear and the like, and particularly to a tool related to cutting of an involute gear, using an edge-changing gear cutting tool using the same.
- a total shape cutting tool is used for gear cutting by a molding method in which the tooth profile of the gear is cut with a blade profile having the same contour as the gear profile of the gear to be processed.
- a conventionally known full-cutting tool is a mechanical insert of a throw-away tip on a plurality of tip mounting seats arranged along the circumferential direction at the outer periphery of a substantially disc-shaped body that rotates about an axis. It is attached.
- the throw-away tip attached to this throw-away gear cutting tool is typically a negative tip having a substantially rectangular flat plate shape.
- the chip includes a cutting edge at a crossing ridge line portion between a flank surface provided on a quadrangular surface and a rake surface provided on a side surface orthogonal thereto.
- the cutting edge has an involute curve shape corresponding to the involute tooth profile used in most gears.
- the side surface 104c of the chip body 104 is changed from the upper surface 104a to the lower surface 104b of the chip body 104.
- the tip of the tip body 104 is formed so as to incline gradually toward the inside, and the intersecting ridge line between the side surface 104c of the tip body 104 and the upper surface 104a of the tip body 104 cuts the tooth bottom and tooth surface portion of the involute gear.
- the cutting edge ridges 105a and 105b are used.
- the side surface 104c of the chip body 104 which is a rake face, is a flat surface inclined at a constant angle.
- a cutting edge ridge 105a for cutting the tooth bottom portion of the involute gear disposed at a low blade tip height from the lower surface 104b of the tip body 104 to the cutting edge ridge 105 is obtained.
- the cutting edge ridge 105b for cutting the tooth surface portion of the involute gear arranged at a position where the cutting edge height is high is the outside of the chip body 104 in a plan view as viewed from the direction facing the upper surface 104a of the chip body 104.
- the radial rake angle ⁇ f in the vicinity of the cutting edge ridge 105a for cutting the tooth bottom portion of the gear becomes too negative, and the cutting edges of other parts The sharpness is worse than that of the ridge 105b. Therefore, this conventional type of chip has a disadvantage in that the inclination angle that can be attached to the side surface 104c of the chip body 104, which is a rake face, is limited.
- This invention is made
- the insert for cutting which can suppress the difference in the radial rake angle (gamma) f in each part of a cutting blade, and a blade-tip-exchange-type gear cutting tool using the same are provided. With the goal.
- One aspect of the present invention is a cutting insert that is detachably attached to an insert mounting seat formed on an outer peripheral portion of a substantially disk-shaped tool body that rotates about an axis, and has a substantially rectangular shape in plan view.
- a substantially flat insert body formed; a flank provided on an upper surface of the insert body; a rake face provided on a side surface of the insert body intersecting the flank; and an intersection of the rake face and the flank
- a cutting edge provided on the ridge line portion, and the cutting edge is formed so as to form a substantially involute curve in a side view of the insert body, and the rake face extends from the upper surface to the lower surface of the insert body.
- at least a tip portion disposed on the outer peripheral side of the tool main body is formed in a concave curved surface shape forming a part of a substantially conical side surface.
- the rake face may be composed of a plurality of concave curved surfaces constituting a part of a substantially conical side face.
- the cutting edge may be formed to be substantially linear in the plan view.
- Another aspect of the present invention is a cutting edge replaceable cutting tool in which the cutting insert according to claim 1 is arranged, and a tool main body having a substantially disk shape rotated about an axis, and the tool main body And a plurality of insert mounting seats provided in a zigzag pattern along the circumferential direction, and the cutting insert is detachably mounted on the insert mounting seat so as to have a negative radial rake angle. It is characterized by being.
- FIG. 1 is a perspective view showing a gear cutter according to an embodiment of the present invention.
- FIG. 2 is a front view of the gear cutter shown in FIG.
- FIG. 3A is a side view of the gear cutter shown in FIG.
- FIG. 3B is a conceptual diagram illustrating a cutting state of the gear cutter shown in FIG.
- FIG. 4 is a partially enlarged view of FIG. 3A.
- FIG. 5 is a partially enlarged view of FIG. 6A is a perspective view showing a cutting insert attached to the gear cutter of FIG. 6B is a plan view showing a cutting insert attached to the gear cutter of FIG.
- FIG. 7A is a left side view showing the cutting insert of FIG.
- FIG. 7B is a right side view showing the cutting insert of FIG. 6.
- FIG. 7C is a front view showing the cutting insert of FIG. 6.
- 7D is a rear view showing the cutting insert of FIG.
- FIG. 8A is a conceptual diagram illustrating the shape of the cutting insert of FIG.
- FIG. 8B is a conceptual diagram illustrating an inclined state of the rake face of the cutting insert in FIG. 6.
- FIG. 9A is a side view showing a modification of the gear cutter shown in FIG.
- FIG. 9B is a conceptual diagram illustrating a cutting state of a modification of the gear cutter shown in FIG.
- FIG. 10A is a conceptual perspective view illustrating the shape of a throw-away tip attached to a conventional throw-away gear cutting cutter.
- FIG. 10B is a conceptual plan view illustrating the shape of a throw-away tip attached to a conventional throw-away type gear cutting cutter.
- FIG. 10C is a conceptual side view for explaining the shape of a throw-away tip attached to a conventional throw-away type gear cutting cutter.
- the gear cutting cutter according to the present embodiment includes a tool body 1, an insert body 10, and a mounting screw 20, as shown in FIGS.
- the tool body 1 has a substantially disk shape that is rotated around an axis.
- the insert main body 10 is detachably mounted on the outer peripheral portion of the tool main body 1 as a blade portion.
- the attachment screw 20 is used for attaching the insert body 10 to the tool body 1.
- the tool body 1 is made of steel or the like, and includes a through hole 2, a plurality of chip pockets 3, and a plurality of insert mounting seats 4.
- the through hole 2 is formed through the central portion of the tool body 1 along the axis, and is used to attach the tool body 1 to the main shaft of the machine tool.
- the plurality of chip pockets 3 are recessed in the zigzag shape along the circumferential direction on the outer peripheral portion of the tool body 1, and facilitates generation, storage, and discharge of chips during cutting.
- the plurality of insert mounting seats 4 are formed on a wall surface facing the tool rotation direction T in each insert pocket 3 and seat the insert body 10.
- the insert mounting seat 4 includes a bottom surface 5 that is a flat surface on which the insert body 10 is placed, a side wall 6 that stands from the bottom surface 5 and faces the tool rotation direction T, and the tool body 1. And a side wall 7 facing the outer peripheral side.
- the bottom surface 5 is formed with a female screw-like screw hole 8 to be screwed with the mounting screw 20.
- the insert mounting seat 4 is formed so that the radial rake angle (radial rake) ⁇ f becomes negative when the insert body 10 is mounted on the insert mounting seat 4.
- the insert mounting seats 4 configured in this way are alternately arranged at equal intervals along the circumferential direction on the left and right side surfaces of the tool body 1, and a plurality of insert mounting seats 4 are arranged in a staggered manner. Yes.
- the insert body 10 is composed of high-speed steel, cemented carbide, cermet, ceramic, ultra-high pressure sintered body, etc., as shown in FIG. 6 and FIG. I am doing.
- the insert body 10 is a so-called positive-shaped insert, and includes a flank surface 11, a pair of rake surfaces 12, 12, a pair of cutting edges 13, 13, a seating surface 14, and a mounting hole 15.
- the flank 11 is provided on the upper surface of the insert body 10.
- the pair of rake surfaces 12, 12 are provided on the left and right side surfaces on the long side intersecting the flank surface 11 at an acute angle.
- the pair of cutting edges 13, 13 are provided at the intersection ridge line portion between the rake face 12, 12 and the flank face 11.
- the seating surface 14 is provided on the lower surface facing the flank 11 and is a flat surface.
- the attachment hole 15 is formed through the central portion in the thickness direction.
- the insert body 10 is detachably fixed to the insert mounting seat 4 as shown in FIG. After the insert 10 is placed on the bottom surface 5 of the insert mounting seat 4 with the lower surface facing the flank 11 as a seating surface 14, one of the rake surfaces 12, 12 is connected to the insert mounting seat 4.
- the mounting screw 20 is attached to the mounting hole 15 in a state where the flat contact surface 16 provided on the side surface on the short side is in contact with the side wall 7 of the insert mounting seat 4. It is fixed by screwing into the screw hole 8 through.
- the insert body 10 can be mounted on either the left or right side of the insert mounting seat 4 arranged in a staggered manner.
- the flank 11 is a convex curved surface that is slightly raised in a substantially semicircular shape that is substantially rectangular in plan view.
- the rake face 12 has two concave portions that form a part of a substantially conical side surface that is inclined from the flank face 11 toward the seating face 14 toward the inside of the insert body 10. It consists of a curved surface.
- the two concave curved surfaces are constituted by a concave curved surface provided at the tip portion 12a disposed on the outer peripheral side of the tool body 1 and a concave curved surface provided at the other portion 12b.
- the conical buses L1 and L2 are formed along the cutting edge 13 by shifting P2.
- the apexes P1 and P2 are on the upper side of the insert body 10, that is, on the flank 11 side.
- the inclination angle of the front end portion 12a and the inclination angle of the other portion 12b are set to the same angle, and two concave curved surfaces are smoothly connected to form one rake face 12.
- the inclination angle ⁇ of the rake face 12, that is, the angle formed by the conical axis M1 (M2) of the concave surface of the tip 12a and the generatrix L1 (L2) is set within a range of 10 ° to 20 °. For example, 15 °.
- the rake face thus configured has an axial rake angle (axial rake) ⁇ p at least in most parts other than the tip end portion 12 a when the insert body 10 is attached to the insert attachment seat 4. Is positive.
- the axial rake angle (axial rake) ⁇ p becomes smaller toward the outer peripheral side of the tool body 1.
- the axial rake angle (axial rake) ⁇ p1 between the conical generatrix L1 and the axis O at the front end portion 12a is preferably set within a range of 0 ° to 10 °, for example, 0.0 ° to 6. It is set to 6 °.
- the axial rake angle (axial rake) ⁇ p2 between the conical generatrix L2 and the axis O in the portion 12b other than the tip is preferably set within a range larger than 0 ° and smaller than 15 °. It is set between 6 ° and 9.0 °.
- the angle formed by the line N that is, the radial rake angle (radial rake) ⁇ f is negative.
- the radial rake angle (radial rake) ⁇ f is substantially constant over the entire length of the cutting edge 13, and is preferably set within a range of ⁇ 10 ° to 0 °, for example, ⁇ 3.8. ⁇ .
- the vertical rake angle ⁇ o is positive at least in most parts other than the tip end portion 12 a, and the vertical rake angle ⁇ o is the same as that of the tool body 1. It becomes smaller toward the outer peripheral side.
- the vertical rake angle ⁇ o1 at the distal end portion 12a is, for example, 5.5 ° to 9.4 °.
- the vertical rake angle ⁇ o2 in the portion 12b other than the tip portion is, for example, 9.4 ° to 9.6 °.
- the cutting edge inclination ⁇ is positive and increases toward the outer peripheral side of the tool body 1.
- the cutting edge inclination angle ⁇ 1 at the distal end portion 12a is, for example, 7 ° to 15 °. Further, the cutting edge inclination angle ⁇ 2 in the portion 12b other than the tip is set to 0 ° to 7 °, for example.
- the cutting edge 13 has a substantially involute curve shape that is convex in a side view of the insert body 10 as viewed from the direction facing the rake face 12, and the rotation trajectory of the cutting edge 13. Is formed to draw an involute curve. As shown in FIG. 6B, the cutting edge 13 is also formed to be substantially linear in a plan view of the insert body 10 viewed from the direction facing the flank 11.
- the cutting edge 13 is provided at each of the side ridges of the pair of rake surfaces 12 and 12 to form a pair of cutting edges 13 and 13.
- the cutting edge 13 includes a right cutting edge 13 a disposed on the right side toward the rake face 12 in a state where the insert body 10 is attached to the tool body 1, and a left side toward the rake face 12.
- the left cutting edge 13b can be used properly. That is, the right cutting edge 13a and the left cutting edge 13b are alternately installed by attaching the insert body 10 having the same shape to each of the plurality of insert mounting seats 4 arranged in a staggered manner. As shown in FIG.
- the left and right cutting edges 13a and 13b form a continuous series of cutting edges as the tool body 1 is rotated about the axis, and this series of cutting edges.
- the involute curve drawn by is transferred to the workpiece and the involute tooth profile is cut out.
- This gear cutting cutter is attached to the main shaft of a machine tool, is fed around the axis O while the tool body 1 is rotated around its axis O, and is used while being moved in contact with the workpiece. Is done. Then, as shown in FIG. 3B, the gear teeth are processed one by one so that the involute curve formed by the rotation trajectory of the cutting edge 13 is transferred to the workpiece. That is, it is mainly used as an overall shape cutting tool for cutting a tooth groove of an involute gear by a molding method, and is preferably used for gear cutting of a large module internal gear used in a large industrial machine such as a construction machine.
- the insert main body 10 to be mounted on the gear cutter is used as the left cutting edge 13b by changing the mounting position on the insert mounting seat 4 left and right when the right cutting edge 13a is damaged due to cutting, for example.
- one insert body 10 can be used twice.
- it is possible to increase the number of times of use by regrinding the rake face 12, and since it is usually possible to regrind 2 to 3 times, one insert body can be used 6 to 8 times. It has become.
- the rake face 12 is formed so as to incline toward the inside of the insert body 10 from the flank face 11 toward the seating face 14.
- the axial rake angle (axial rake) ⁇ p at the time of attachment can be changed in the positive direction.
- the tip portion 12a of the rake face 12 disposed on the outer peripheral side of the tool body 1 is formed of a concave curved surface that forms a part of the substantially conical side surface. Therefore, when the rake face 12 is inclined, the involute It is possible to prevent the involute curve formed by the cutting edge 13 at the portion corresponding to the roundness of the tooth bottom of the gear from being broken. Further, since the portion 12b other than the tip portion also has a concave curved surface that constitutes a part of the substantially conical side surface, the portion corresponding to the tooth surface of the involute gear when the inclination angle ⁇ of the rake face 12 is increased. It is possible to prevent the involute curve formed by the blade 13 from being broken.
- the inclination angle ⁇ of the rake face 12 can be set to a desired angle, and the rake angle in the axial direction when the insert body 10 is attached to the tool body 1 by attaching the large inclination angle ⁇ to the rake face 12.
- (Axial rake) ⁇ p can be made positive. Even if the insert body 10 is arranged so that the radial rake angle (radial rake) ⁇ f is negative, by increasing the axial rake angle ⁇ p, the vertical rake angle ⁇ o and the cutting edge inclination angle ⁇ become positive. Since it changes, the sharpness is improved and the cutting resistance is reduced. As a result, chatter vibration is suppressed and cutting heat is reduced, so that excellent machining accuracy can be obtained and damage to the cutting edge can be prevented to extend the tool life.
- the cutting edge 13 is formed so as to be substantially linear in a plan view as viewed from the direction facing the flank 11, a radial rake angle (radial) when the insert body 10 is attached to the tool body 1.
- Rake) ⁇ f is substantially constant over the entire length of the cutting edge 13.
- the axial rake angle (axial rake) ⁇ p decreases toward the outer peripheral side of the tool body 1, and the vertical rake angle ⁇ o1 at the tip 12a is smaller than the vertical rake angle ⁇ o2 at the other portion 13b. Therefore, it is possible to prevent damage to the cutting edge 13 at the portion that cuts the tooth bottom of the involute gear that is most easily damaged.
- the rake face 12 is formed of a concave curved surface, the discharge direction of chips discharged by machining is directed toward the center of the tool body 1. As a result, it is possible to prevent chips from rubbing on the processed surface and reducing the quality of the processed surface.
- the rake face 12 is composed of two concave curved surfaces constituting a part of the substantially conical side surface.
- the distal end portion 12a has a substantially conical side surface.
- the other portion 12b may be formed of an inclined surface formed of a flat surface.
- the rake face 12 may be constituted by three or more concave curved surfaces constituting a part of a substantially conical side face.
- the inclination angle ⁇ of the rake face 12 is constant without being different between the tip portion 12a and the other portion 12b, but instead, it may be set to a different inclination angle depending on the position. .
- the inclination angle ⁇ of the rake face 12 is 15 °, but the inclination angle ⁇ is not limited to this and may be any other angle.
- the inclination angle ⁇ of the rake face 12 is preferably set within a range of 10 ° to 20 °, and advantageously 12 ° to 18 °. It is preferable to set within the range. If the inclination angle ⁇ of the rake face 12 is less than 10 °, the insert mounting seat 4 is formed such that the radial rake angle (radial rake) ⁇ f when the insert body 10 is attached is negative.
- the axial rake angle ⁇ p becomes negative also in the portion 12b other than the tip, and there is a possibility that the expected effect cannot be obtained. Further, if the inclination angle ⁇ exceeds 20 °, the strength of the blade edge may be lowered, and the seating surface 14 may be reduced, which may cause a problem that the size of the insert body 10 must be increased. There is.
- the axial rake angle (axial rake) ⁇ p1 at the tip 12a is 0.0 ° to 6.6 °
- the axial rake angle (axial rake) ⁇ p2 at the other portion 12b is 6.
- the angle is 6 ° to 9.0 °
- the axial rake angle (axial rake) ⁇ p is not limited to this and may be any other angle.
- the axial rake angle ⁇ p1 of the tip 12a should be set within a range of 0 ° to 10 °. Is preferable, and it is preferably set within a range of 0 ° to 8 °.
- the axial rake angle ⁇ p2 of the portion 12b other than the tip portion is preferably set within a range larger than 0 ° and smaller than 15 °, and advantageously larger than 0 ° and smaller than 10 °. It is preferable to set within the range. If the angle is 0 ° or less, so-called negative cutting may occur, and there is a possibility that the cutting resistance reduction effect cannot be expected. If the angle is 15 ° or more, the cutting edge angle becomes sharp, and chipping or chipping is likely to occur during machining. There is a fear.
- the radial rake angle (radial rake) ⁇ f is set to ⁇ 3.8 °.
- the radial rake angle (radial rake) ⁇ f is not limited to this, and any other arbitrary rake angle (radial rake) ⁇ f is used.
- the angle can be Considering the effect of suppressing chipping and chipping that occur at the start of contact between the work material and the cutting edge 13, the radial rake angle (radial rake) ⁇ f is set within the range of ⁇ 10 ° to 0 °. It is preferably set within the range of ⁇ 8 ° to ⁇ 3 °.
- the angle is less than -10 °, the cutting resistance increases, so there is a risk that the machining accuracy will decrease due to the occurrence of chatter vibration, etc., and the tool damage may be expanded. There is a risk of chipping or chipping at the start of contact.
- the vertical rake angle ⁇ o1 at the distal end portion 12a is set to 5.5 ° to 9.4 °
- the vertical rake angle ⁇ o2 at the other portion 12b is set to 9.4 ° to 9.6 °.
- the vertical rake angle ⁇ o is not limited to this, and may be any other angle.
- the vertical rake angle ⁇ o1 of the distal end portion 12a is preferably set within a range of ⁇ 5 ° to 20 °, and the vertical rake angle ⁇ o2 in the portion 12b other than the distal end portion is greater than 0 ° and smaller than 15 °. It is preferable to set within the range.
- the cutting edge inclination angle ⁇ 1 at the tip 12a is set to 7 ° to 15 °
- the cutting edge inclination angle ⁇ 2 at the other portion 12b is set to 0 ° to 7 °.
- the cutting edge inclination angle ⁇ 1 of the tip end portion 12a is preferably set in the range of ⁇ 5 ° to 20 °
- the cutting edge inclination angle ⁇ 2 in the portion 12b other than the tip portion is 0 ° to 10 °. It is preferable to set within the range.
- the gear cutting cutter including the single-type tool body 1 that cuts tooth spaces of the internal gear one by one has been described as an example with reference to FIGS. 1 to 5.
- a cutting edge-replaceable gear cutting tool is not limited to this, but instead, for example, as shown in FIGS. 9A and 9B, a duplex-type tool that simultaneously cuts two gear teeth A gear cutter comprising the main body 30 may be adopted.
- the present invention is not limited to the internal gear, and can also be used for a gear cutting tool such as a hobbing tool for cutting a tooth groove of another gear such as an external gear.
- the insert body 10 has a substantially rectangular flat plate shape, more specifically, a substantially bowl shape.
- the shape of the chip is not limited to this, and any other arbitrary shape such as a triangular flat plate shape may be used. A shape may be adopted.
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Abstract
Description
Claims (4)
- 軸線回りに回転される略円盤状をなす工具本体の外周部に形成されたインサート取付座に着脱可能に取り付けられる切削用インサートであって、
略平板状のインサート本体と、
該インサート本体の上面に設けられた逃げ面と、
該逃げ面と交差するインサート本体の側面に設けられたすくい面と、
該すくい面と前記逃げ面との交差稜線部に設けられた切れ刃とを備え、
該切れ刃が、前記インサート本体の側面視で略インボリュート曲線状をなすように形成されており、
前記すくい面が、前記インサート本体の上面から下面に向けて内側に傾斜するとともに、少なくとも前記工具本体の外周側に配置される先端部が、略円錐の側面の一部を構成する凹曲面状に形成されていることを特徴とする切削用インサート。
- 前記すくい面が、略円錐の側面の一部を構成する複数の凹曲面から構成されることを特徴とする請求項1に記載の切削用インサート。
- 前記切れ刃が、前記平面視で略直線状をなすように形成されていることを特徴とする請求項1に記載の切削用インサート。
- 請求項1に記載の切削用インサートが配置される刃先交換式歯切工具であって、
軸線回りに回転される略円盤状をなす工具本体と、
該工具本体の外周部に周方向に沿って千鳥状に設けられた複数のインサート取付座とを備え、
前記切削用インサートが、前記インサート取付座に、径方向すくい角を負とするように着脱自在に取り付けられていることを特徴とする刃先交換式歯切工具。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09834487.2A EP2386376B1 (en) | 2008-12-25 | 2009-12-24 | Cutting insert and indexable tooth cutting tool using the same |
CN200980153133.XA CN102264499B (zh) | 2008-12-25 | 2009-12-24 | 切削用刀片以及使用该切削用刀片的刃尖更换式切齿刀具 |
CA2745968A CA2745968C (en) | 2008-12-25 | 2009-12-24 | Cutting insert and indexable tooth cutting tool using the same |
BRPI0922414A BRPI0922414A2 (pt) | 2008-12-25 | 2009-12-24 | inserto e ferramenta de corte. |
JP2010543893A JP4756408B2 (ja) | 2008-12-25 | 2009-12-24 | 切削用インサートおよびこれを用いた刃先交換式歯切工具 |
KR1020117014648A KR101173843B1 (ko) | 2008-12-25 | 2009-12-24 | 절삭 인서트 및 이것을 이용한 인덱서블 치절 공구 |
US13/169,860 US8308399B2 (en) | 2008-12-25 | 2011-06-27 | Cutting insert and indexable tooth cutting tool using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008329919 | 2008-12-25 | ||
JP2008-329919 | 2008-12-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/169,860 Continuation US8308399B2 (en) | 2008-12-25 | 2011-06-27 | Cutting insert and indexable tooth cutting tool using the same |
Publications (1)
Publication Number | Publication Date |
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WO2010073681A1 true WO2010073681A1 (ja) | 2010-07-01 |
Family
ID=42287322
Family Applications (1)
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PCT/JP2009/007215 WO2010073681A1 (ja) | 2008-12-25 | 2009-12-24 | 切削用インサートおよびこれを用いた刃先交換式歯切工具 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8308399B2 (ja) |
EP (1) | EP2386376B1 (ja) |
JP (1) | JP4756408B2 (ja) |
KR (1) | KR101173843B1 (ja) |
CN (1) | CN102264499B (ja) |
BR (1) | BRPI0922414A2 (ja) |
CA (1) | CA2745968C (ja) |
RU (1) | RU2465989C1 (ja) |
WO (1) | WO2010073681A1 (ja) |
Cited By (8)
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EP2433735A1 (en) * | 2010-09-24 | 2012-03-28 | Sandvik Intellectual Property AB | A gear milling cutter as well as a replaceable milling insert therefor |
CN102886572A (zh) * | 2011-07-18 | 2013-01-23 | 钴碳化钨硬质合金公司 | 切削镶片,特别是用于切齿刀具的切削镶片 |
WO2013018724A1 (ja) * | 2011-07-29 | 2013-02-07 | 株式会社タンガロイ | 切削インサートおよび回転切削工具 |
CN103658799A (zh) * | 2012-09-07 | 2014-03-26 | 山特维克知识产权股份有限公司 | 铣削刀具 |
JP2015058491A (ja) * | 2013-09-17 | 2015-03-30 | 株式会社根本製作所 | 歯切用むくバイト、及び歯切用むくバイトにチップブレーカを形成する際に使用する加工治具 |
JPWO2015029440A1 (ja) * | 2013-08-30 | 2017-03-02 | 兼房株式会社 | カッターの替刃及びカッター |
JP2019508265A (ja) * | 2016-01-22 | 2019-03-28 | ハルトメタル−ウェルクゾーグファブリック ポール ホーン ゲゼルシャフト ミット ベシュレンクテル ハフツング | フライス工具 |
JP2019048379A (ja) * | 2012-12-27 | 2019-03-28 | 株式会社タンガロイ | 切削インサート及び刃先交換式回転切削工具 |
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WO2013175478A2 (en) * | 2012-05-24 | 2013-11-28 | Gershon System Ltd. | Method for designing a cutting edge of a cutting tool, cutting tools comprising the same, and cutting elements with multiple such cutting portions |
EP2990149B1 (en) | 2014-09-01 | 2017-03-01 | Sandvik Intellectual Property AB | Cutting insert and gear milling cutter |
US9597740B2 (en) * | 2014-10-30 | 2017-03-21 | Kennametal Inc. | Cutting insert with elliptical cutting edge |
PL233453B1 (pl) * | 2017-08-24 | 2019-10-31 | Politechnika Czestochowska | Frez krążkowy modułowy do obróbki zębatych kół walcowych |
PL233454B1 (pl) * | 2017-08-25 | 2019-10-31 | Politechnika Czestochowska | Frez krążkowy modułowy do obróbki zębatych kół walcowych |
CN107363311A (zh) * | 2017-09-14 | 2017-11-21 | 广东东方精工科技股份有限公司 | 一种梯形槽铣刀 |
RU2693578C2 (ru) * | 2017-12-11 | 2019-07-03 | Открытое акционерное общество "Свердловский инструментальный завод" | Сборная червячно-модульная фреза |
JP6835288B1 (ja) * | 2020-11-11 | 2021-02-24 | 株式会社タンガロイ | 切削インサート及び歯切工具 |
RU2754916C1 (ru) * | 2021-02-24 | 2021-09-08 | Общество с ограниченной ответственностью "Сборные конструкции инструмента, фрезы Москвитина" | Режущая пластина для модульной фрезы и фреза для ее использования |
EP4331761A4 (en) * | 2021-04-27 | 2024-05-29 | Sumitomo Electric Hardmetal Corp. | ROTARY CUTTING TOOL |
US11433460B1 (en) | 2021-10-26 | 2022-09-06 | Prince Mohammad Bin Fahd University | Cutting insert |
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- 2009-12-24 CN CN200980153133.XA patent/CN102264499B/zh not_active Expired - Fee Related
- 2009-12-24 RU RU2011126157/02A patent/RU2465989C1/ru not_active IP Right Cessation
- 2009-12-24 JP JP2010543893A patent/JP4756408B2/ja not_active Expired - Fee Related
- 2009-12-24 WO PCT/JP2009/007215 patent/WO2010073681A1/ja active Application Filing
- 2009-12-24 CA CA2745968A patent/CA2745968C/en not_active Expired - Fee Related
- 2009-12-24 BR BRPI0922414A patent/BRPI0922414A2/pt not_active IP Right Cessation
- 2009-12-24 EP EP09834487.2A patent/EP2386376B1/en not_active Not-in-force
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012066380A (ja) * | 2010-09-24 | 2012-04-05 | Sandvik Intellectual Property Ab | ギアミーリングカッタ及び交換可能な転削インサート |
EP2433735A1 (en) * | 2010-09-24 | 2012-03-28 | Sandvik Intellectual Property AB | A gear milling cutter as well as a replaceable milling insert therefor |
KR101852195B1 (ko) * | 2010-09-24 | 2018-04-25 | 산드빅 인터렉츄얼 프로퍼티 에이비 | 기어 밀링 커터 뿐만 아니라 이를 위한 교체 가능한 밀링 인서트 |
US8708609B2 (en) | 2010-09-24 | 2014-04-29 | Sandvik Intellectual Property Ab | Gear milling cutter as well as a replaceable milling insert therefor |
DE102011107789B4 (de) * | 2011-07-18 | 2015-05-28 | Kennametal Inc. | Zahnradfräser-Schneideinsatz und Zahnradfräser mit einem solchen Zahnradfräser-Schneideinsatz |
CN102886572A (zh) * | 2011-07-18 | 2013-01-23 | 钴碳化钨硬质合金公司 | 切削镶片,特别是用于切齿刀具的切削镶片 |
DE102011107789A1 (de) | 2011-07-18 | 2013-01-24 | Kennametal Inc. | Schneideinsatz, insbesondere für Zahnradfräser |
US9427812B2 (en) | 2011-07-18 | 2016-08-30 | Kennametal Inc. | Cutting insert for tooth cutters |
WO2013018724A1 (ja) * | 2011-07-29 | 2013-02-07 | 株式会社タンガロイ | 切削インサートおよび回転切削工具 |
JPWO2013018724A1 (ja) * | 2011-07-29 | 2015-03-05 | 株式会社タンガロイ | 切削インサートおよび回転切削工具 |
CN103658799A (zh) * | 2012-09-07 | 2014-03-26 | 山特维克知识产权股份有限公司 | 铣削刀具 |
JP2019048379A (ja) * | 2012-12-27 | 2019-03-28 | 株式会社タンガロイ | 切削インサート及び刃先交換式回転切削工具 |
JPWO2015029440A1 (ja) * | 2013-08-30 | 2017-03-02 | 兼房株式会社 | カッターの替刃及びカッター |
JP2015058491A (ja) * | 2013-09-17 | 2015-03-30 | 株式会社根本製作所 | 歯切用むくバイト、及び歯切用むくバイトにチップブレーカを形成する際に使用する加工治具 |
JP2019508265A (ja) * | 2016-01-22 | 2019-03-28 | ハルトメタル−ウェルクゾーグファブリック ポール ホーン ゲゼルシャフト ミット ベシュレンクテル ハフツング | フライス工具 |
US10625351B2 (en) | 2016-01-22 | 2020-04-21 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Milling tool |
Also Published As
Publication number | Publication date |
---|---|
JPWO2010073681A1 (ja) | 2012-06-07 |
US8308399B2 (en) | 2012-11-13 |
EP2386376B1 (en) | 2013-10-02 |
CN102264499A (zh) | 2011-11-30 |
KR101173843B1 (ko) | 2012-08-13 |
EP2386376A4 (en) | 2012-07-11 |
JP4756408B2 (ja) | 2011-08-24 |
BRPI0922414A2 (pt) | 2015-12-15 |
KR20110094088A (ko) | 2011-08-19 |
RU2465989C1 (ru) | 2012-11-10 |
CN102264499B (zh) | 2012-09-26 |
CA2745968C (en) | 2012-06-26 |
US20110255925A1 (en) | 2011-10-20 |
EP2386376A1 (en) | 2011-11-16 |
CA2745968A1 (en) | 2010-07-01 |
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