WO2021117872A1 - インサート、切削工具及び同切削工具を用いた被削材切削方法 - Google Patents

インサート、切削工具及び同切削工具を用いた被削材切削方法 Download PDF

Info

Publication number
WO2021117872A1
WO2021117872A1 PCT/JP2020/046298 JP2020046298W WO2021117872A1 WO 2021117872 A1 WO2021117872 A1 WO 2021117872A1 JP 2020046298 W JP2020046298 W JP 2020046298W WO 2021117872 A1 WO2021117872 A1 WO 2021117872A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
boundary
cutting
along
corner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/046298
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
義仁 池田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to US17/757,145 priority Critical patent/US12454011B2/en
Priority to DE112020005293.1T priority patent/DE112020005293B4/de
Priority to CN202080084862.0A priority patent/CN114786849B/zh
Priority to JP2021564061A priority patent/JP7295972B2/ja
Publication of WO2021117872A1 publication Critical patent/WO2021117872A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
    • B23B27/143—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having chip-breakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/08—Rake or top surfaces
    • B23B2200/082—Rake or top surfaces with elevated clamping surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/08—Rake or top surfaces
    • B23B2200/086—Rake or top surfaces with one or more grooves
    • B23B2200/087—Rake or top surfaces with one or more grooves for chip breaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/201—Details of the nose radius and immediately surrounding area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/28—Angles
    • B23B2200/286—Positive cutting angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/32—Chip breaking or chip evacuation
    • B23B2200/321—Chip breaking or chip evacuation by chip breaking projections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/32—Chip breaking or chip evacuation
    • B23B2200/328—Details of chip evacuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/12—Boron nitride
    • B23B2226/125—Boron nitride cubic [CBN]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/31—Diamond
    • B23B2226/315—Diamond polycrystalline [PCD]

Definitions

  • This disclosure relates to an insert, a cutting tool, and a work material cutting method using the same cutting tool.
  • a cutting tool that cuts a work material has, for example, an insert in which the cutting edge faces outward. Upon contact of the inserts, the work material is cut to the desired size and shape.
  • Patent Document 1 the one disclosed in International Publication No. 2005/06817 (Patent Document 1) is known.
  • the substrate structure includes an upper surface, a lower surface located on the opposite side of the upper surface, a side surface connecting the upper surface and the lower surface, and a cutting edge including a boundary between the side surface and the upper surface.
  • the upper surface is located at a boundary with the side surface, and is connected to a corner portion having a convex curved shape bulging outward in a plan view and the corner portion, and constitutes the cutting edge together with the corner portion.
  • the cutting edge is separated from the cutting edge through the side portion, the rake surface extending downward along the side portion and the corner portion, and the rake surface inclined downward from the side portion and the corner portion, and the rake surface.
  • the first rising surface has a first region along the corner portion and a second region along the side portion.
  • the second rising surface has a third region along the corner portion and connected to the first region, and a fourth region along the side portion and connected to the second region.
  • the inclination angle of the first region on the first rising surface is larger than the inclination angle of the third region on the second rising surface.
  • the inclination angle of the second region on the first rising surface is larger than the inclination angle of the fourth region on the second rising surface.
  • the first boundary which is the boundary between the first region and the third region, is entirely located above the cutting edge.
  • the second boundary which is the boundary between the second region and the fourth region, has a portion located below the cutting edge.
  • the cutting tool has a holder having a length extending from the first end to the second end, and the cutting insert fixed to the first end side. ..
  • a method of cutting a work material includes a step of rotating the work material, a step of bringing the cutting tool into contact with the rotating work material, and a step of cutting the work material. It has a step of separating the cutting tool from the cut work material.
  • FIG. 5A shows a part of the cross section of the insert along the horizontal direction including the first rising surface
  • FIG. 6B shows a part of the cross section of the insert along the horizontal direction including the second rising surface. Shown.
  • FIG. 8A is a diagram in which the work material is cut with a small depth of cut
  • FIG. 8B is a diagram in which the work material is cut with a depth of cut larger than that in FIG. 8A
  • FIG. 8C is a diagram in FIG. 8B. It is the figure which cuts a work material with a larger depth of cut. It is a figure which showed the insert by the modification.
  • each direction of front, back, left, right, up and down mentioned above is used in relation to the attached drawing, and is not limited to front, back, left, right, up and down in the real space. That is, each of the above directions has no intention of being limited to a predetermined direction in the real space.
  • the work material Ob wood, metal, etc.
  • the cutting tool 10 may be fixed to the machine tool Mt.
  • the work material Ob may be rotatable via the machine tool Mt, and the cutting tool 10 may be movable back and forth, left, right, up and down via the machine tool Mt.
  • a cutting insert 11 (hereinafter, referred to as an insert) capable of cutting the work material Ob may be located at the tip of the cutting tool 10. For example, when the insert 11 is pressed against the rotating work material Ob, the work material Ob is cut into a desired size and shape.
  • the cutting tool 10 is detachably attached to the machine tool Mt (cutting tool stand).
  • the cutting tool 10 includes an outer diameter cutting tool for cutting the outer diameter of the work material Ob, an inner diameter cutting tool for cutting the inner diameter of the work material Ob, a grooving tool for grooving the work material Ob, a thread cutting tool, and the like. Examples include parting tools.
  • the cutting tool 10 can also be called a cutting tool.
  • the cutting tool 10 may have an insert 11, a holder 70 that supports the insert 11, and a clamp 13 that urges the insert 11 toward the holder 70.
  • the insert 11 may be fixed to the tip of the holder 70 (hereinafter, also referred to as the first end 70a).
  • the insert 11 in a state of being removed from the holder 70 will be focused on and described.
  • attention will be paid to the holder 70 in the state where the insert 11 is attached, and this will be described.
  • the explanation of the clamp 13 will be given in the explanation of the insert 11 and the holder 70.
  • the insert 11 may be a replaceable insert called a throwaway insert.
  • the insert 11 may be located in the pocket 72a lacking the tip 70a (hereinafter, also referred to as the first end 70a) side of the holder 70, and may be fixed by the clamp 13.
  • the shape of the insert 11 is arbitrary.
  • the shape of the insert 11 may be set according to the material and shape of the work material Ob (see FIG. 1). As shown in FIG. 2, the insert 11 may have a square plate shape. In other embodiments, the insert 11 may have a triangular or pentagonal shape.
  • the insert 11 may have a shape that is parallel in the vertical direction and symmetrical with respect to the surface including the VA-VA line (FIG. 4) (illustrated example), or may have an asymmetric shape.
  • the size of the insert 11 is arbitrary.
  • the thickness (length in the vertical direction) of the insert 11 may be 5 mm or more and / or 20 mm or less.
  • the width (length in the left-right direction) of the insert 11 may be 10 mm or more and / or 20 mm or less.
  • the material of the insert 11 is arbitrary.
  • the material of the insert 11 may be PCD (polycrystalline diamond), CBN (cubic boron nitride), cemented carbide and the like.
  • CBN is, for example, a sintered composite material in which ceramic and metal are composited.
  • Specific examples of CBN include, for example, a titanium compound containing TiC and / or TiN as a main component.
  • the cemented carbide may be, for example, WC-Co, WC-TiC-Co and WC-TiC-TaC-Co.
  • WC, TiC and TaC are hard particles.
  • Co is a binding phase.
  • the insert 11 may be composed of one kind of material or may be composed of a plurality of materials.
  • the insert 11 containing a plurality of materials may be, for example, partially composed of CBN and the rest composed of cemented carbide.
  • the ratio of the CBN to the cemented carbide may be 1% or less, 3% or less, 7% or less, or 7% or more.
  • the insert 11 may be composed of CBN only at the tip pressed against the work material Ob (see FIG. 1), for example. That is, the ratio of CBN may be smaller than the ratio of cemented carbide. This makes it possible to reduce the amount of CBN, which is more expensive than cemented carbide. As a result, an inexpensive insert 11 can be provided.
  • the ratio of PCD and cemented carbide the explanation of the ratio of CBN and cemented carbide can be incorporated.
  • the insert 11 may have a main body portion 30 and a cutting portion 40.
  • the main body 30 may occupy most of the insert 11.
  • the above-mentioned description of the shape and size of the insert 11 may be incorporated for the shape and size of the main body portion 30.
  • the main body 30 may be urged toward the holder 70 by the clamp 13.
  • the cutting portion 40 is a portion capable of cutting the work material Ob (see FIG. 1).
  • the cutting portion 40 may be located, for example, at a corner of the main body portion 30 which has a polygonal shape (rectangular shape in FIG. 3) in a plan view.
  • the cutting portion 40 has a blade portion 41 facing outward.
  • the blade portion 41 included in the cutting portion 40 comes into contact with the work material Ob (see FIG. 1) in a state where the insert 11 is fixed to the holder 70, and can cut the insert 11.
  • the blade portion 41 is composed of a cutting blade 41a, a rake surface 53, and a flank surface 43a, which will be described later.
  • the material of the cutting portion 40 may be the same as the material of the main body portion 30, or may be different from the material of the main body portion 30.
  • the cutting portion 40 may be made of CBN and the main body 30 may be made of cemented carbide.
  • the cutting portion 40 may be made of PCD and the main body 30 may be made of cemented carbide.
  • the cutting portion 40 and the main body portion 30 may be made of cemented carbide.
  • the combination of the main body portion 30 and the cutting portion 40 depending on the material is arbitrary.
  • the color of the cutting portion 40 may be the same as the color of the main body portion 30, or may be different from the color of the main body portion 30.
  • FIG. 3 shows an insert 11 having only one cutting portion 40.
  • the insert 11 may have two cutting portions 40, or may have three or more cutting portions 40.
  • the insert 11 has a rectangular plate shape and may have cutting portions (a total of four cutting portions) at each of the four corners.
  • the insert 11 has a triangular plate shape and may have cutting portions (a total of three cutting portions) at each of the three corners.
  • the insert 11 has a pentagonal plate shape and may have five cuttings (a total of five cuttings) at each of the five corners.
  • the insert 11 may have an upper surface 21, a lower surface 22, and a side surface 23. Further, the insert 11 may be provided with through holes 11a that open in the upper surface 21 and the lower surface 22. The upper surface 21 and the side surface 23 form the blade portion 41 of the insert 11. The blade portion 41 comes into contact with the work material Ob (see FIG. 1), and this is cut.
  • the upper surface 21 may be a surface facing above the main body portion 30 and the cutting portion 40.
  • the upper surface 21 may be a surface with which the clamp 13 abuts while the insert 11 is fixed to the holder 70.
  • the upper surface 21 may have, for example, a rectangular shape (including a rhombus), a triangular shape, or a pentagonal shape.
  • the upper surface 21 may or may not be parallel to the lower surface 22.
  • the upper surface 21 may have irregularities at least in part.
  • the upper surface 21 may have an upper surface 31 of the main body portion and an upper surface 50 of the cutting portion.
  • the upper surface 31 of the main body is a surface formed by the main body 30 and faces upward.
  • the upper surface 50 of the cutting portion may be a surface facing above the cutting portion 40.
  • the upper surface 31 of the main body may be a smooth surface as a whole, or may have irregularities in places.
  • the ratio of the upper surface 50 of the cutting portion to the upper surface 21 may be 3% or less, 7% or less, 15% or less, or 15% or more.
  • the shape of the upper surface 50 of the cutting portion is arbitrary.
  • the upper surface 50 of the cutting portion may have a triangular shape, a rectangular shape, or a substantially V shape (including a U shape).
  • the cutting portion upper surface 50 includes a corner portion 51 forming a corner of the cutting portion upper surface 50, side portions 52 and 52 connected to the corner portion 51, and a rake face extending along the corner portion 51 and the side portions 52 and 52. 53, a connecting surface 54 connected to the rake surface 53, a rising surface 60 connected to the connecting surface 54 and upward as the distance from the rake surface 53 increases, and a connecting surface 55 connecting the rising surface 60 and the upper surface 31 of the main body. , May have.
  • the corner portion 51 may be located at the boundary with the side surface 23 on the upper surface 50 of the cutting portion.
  • the corner portion 51 may exhibit a linear shape (convex curve shape) bulging outward in a plan view.
  • the corner portion 51 having a convex curved shape may be inclined upward, horizontally extended, or inclined downward in the direction from the apex of the convex portion toward the side portions 52, 52. May be good.
  • the convex curve shape described above is not limited to a convex curve having no thickness, and may have a predetermined thickness.
  • the curvature of the corner portion 51 exhibiting a convex curve shape is arbitrary.
  • the side portions 52 and 52 are connected to the corner portions 51, respectively, and may extend from the corner portions 51 toward the rising surface 60.
  • the ends of the side portions 52, 52 separated from the corner portions 51 may be connected to the rising surface 60 (second rising surface 62).
  • One side portion 52 is located on the right side of the corner portion 51 when the corner portion 51 is viewed from the front.
  • the other side portion 52 is located on the left side of the corner portion 51 when viewed from the same direction.
  • One side portion 52 and the other side portion 52 are separated from each other.
  • the side portions 52 and 52 may be linear (straight) from the corner portion 51 toward the upper surface portion 31 of the main body portion. From another viewpoint, the side portions 52, 52 may be portions extending linearly along the outer edge of the upper surface 50 of the cutting portion.
  • the straight line here does not have to mean a strict straight line. For example, assuming a straight line along the side portion 52, if the deviation between the side portion 52 and the straight line is 0.05 mm or less or 0.03 mm or less, the side portion 52 may be regarded as a straight line. ..
  • the meaning of the straight line used in other explanations may be the same.
  • the linear shape is not limited to a straight line having no thickness, and may include having a predetermined thickness and extending in a straight line.
  • the side portions 52, 52 may be inclined upward, horizontal, or downward toward the upper surface 31 (connecting surface 55) of the main body portion from the corner portion 51.
  • One side portion 52 may have the same inclination angle or may have a different inclination angle in relation to the other side portion 52.
  • one side 52 may have an upward tilt angle and the other side 52 may have a downward tilt angle.
  • the lengths of the sides 52 and 52 are arbitrary.
  • the side portions 52 and 52 may have the same length or different lengths from each other.
  • the side portions 52 and 52 may be longer than the corner portion 51 or shorter than the corner portion 51, respectively.
  • the side portions 52 and 52 may have the same length as the corner portions 51, respectively.
  • the corner portion 51 and the side portions 52, 52 may face the outside of the insert 11. Such corner portions 51 and side portions 52, 52 may form a cutting edge 41a that directly contributes to cutting of the work material Ob (see FIG. 1).
  • the cutting blade 41a is a part of the blade portion 41.
  • the cutting edge 41a is a portion of the insert 11 that bites into the work material Ob when cutting the work material Ob.
  • the cutting edge 41a may be a ridge line located between the upper surface 50 and the side surface 23 of the cutting portion.
  • the rake face 53 may be connected to the side portions 52, 52 and the corner portion 51. In other words, the rake face 53 may be connected to the cutting edge 41a. The rake face 53 may extend along the sides 52, 52 and the corners 51.
  • the rake face 53 may be inclined downward (lower surface 22) from the side portions 52, 52 and the corner portion 51.
  • the inclination angle of the rake face 53 is arbitrary.
  • the inclination angle of the rake face 53 may be 10 degrees or less, 25 degrees or less, or 25 degrees or more.
  • the inclination angle of the rake face 53 may be different at each portion of the rake face 53 along the corner portion 51 and the side portions 52, 52.
  • the lower edge (lower edge) of the rake face 53 that is inclined downward may or may not be curved.
  • the lower side of the rake face 53 may include a linear portion.
  • the shape of the rake face 53 in a plan view is arbitrary.
  • the rake face 53 may have a substantially V-shape (including a substantially U-shape) in a plan view.
  • the rake face 53 may have a flat surface, a convex curved surface, or a concave curved surface in part or in whole.
  • the width of the rake face 53 may be arbitrarily set when viewed in the direction along the side portions 52, 52 and the corner portions 51.
  • the connecting surface 54 shown in FIG. 4 connects the rake surface 53 and the rising surface 60.
  • the connecting surface 54 is connected to the lower side of the rake face 53 and the lower side of the rising surface 60.
  • the connecting surface 54 may have a predetermined width in the direction from the rake surface 53 to the rising surface 60 (the direction orthogonal to the linear corner portion 51 in a plan view).
  • the width of the connecting surface 54 may be the same or different in size along the rake face 53 and the rising surface 60.
  • the width of the portion of the connecting surface 54 located on the straight line L1 (hereinafter, also referred to as the straight line L1) that bisects the corner portion 51 is the portion farthest from the corner portion 51. It may be larger than the width.
  • the width of the portion of the connecting surface 54 along the corner portion 51 (the portion connected to the portion along the corner portion 51 on the rake face 53) may be constant.
  • the width of the portion of the connecting surface 54 along the side portions 52, 52 (the portion connected to the portion along the side portions 52, 52 on the rake face 53) may be different at each location.
  • the width of the portion along the rake face 53 connected to the side portions 52 and 52 may become smaller as the distance from the corner portion 51 increases.
  • the shape of the connecting surface 54 in a plan view can be set arbitrarily.
  • the shape of the connecting surface 54 in a plan view may be a substantially V shape (including a substantially U shape).
  • the connecting surface 54 may or may not have a predetermined inclination angle in the width direction thereof. That is, the connecting surface 54 may or may not be inclined upward or downward in the width direction thereof.
  • the rising surface 60 may be connected to the connecting surface 54 and the connecting surface 55.
  • the rising surface 60 is directed upward as the distance from the rake surface 53 increases.
  • the lower side of the rising surface 60 may be connected to the connecting surface 54.
  • the upper side of the rising surface 60 may be connected to the connecting surface 55.
  • These upper and lower sides may include a linearly extending portion or a curvedly extending portion in side view and / or plan view.
  • the rising surface 60 may have a first rising surface 61, a second rising surface 62, and a third rising surface 63.
  • the first rising surface 61 may be connected to the connecting surface 54 and the second rising surface 62.
  • the third rising surface 63 may be connected to the second rising surface 62 and the connecting surface 55.
  • the second rising surface 62 may be located between the first rising surface 61 and the third rising surface 63.
  • the first to third rising surfaces 61, 62, and 63 will be described.
  • the first rising surface 61 may be separated from the cutting edge 41a via the rake surface 53 and the connecting surface 54.
  • the first rising surface 61 may move upward as the distance from the cutting edge 41a increases. That is, the first rising surface 61 may have an uphill slope in the direction from the connecting surface 54 toward the second rising surface 62. Since the first rising surface 61 has an ascending slope, the insert 11 is formed with a groove formed by the rake surface 53, the connecting surface 54, and the first rising surface 61. This groove may have a flat bottom surface, for example.
  • the first rising surface 61 may have a first region 61a and second regions 61b and 61b.
  • the first region 61a may be connected to a portion along the corner portion 51 of the connecting surface 54. From another point of view, the first region 61a may be along the corner 51.
  • the second regions 61b and 61b may be connected to the portions along the side portions 52 and 52 of the connecting surface 54. From another point of view, the second regions 61b, 61b may be along the sides 52, 52.
  • the first region 61a and the second regions 61b, 61b may be continuous with each other.
  • the details of the first region 61a and the second regions 61b and 61b will be described.
  • the first region 61a may be a straight line from the connecting surface 54 toward the second rising surface 62 in a cross-sectional view along a straight line L1 that bisects the corner portion 51.
  • the first region 61a may be linearly curved from the connecting surface 54 toward the second rising surface 62 in cross-sectional view along the straight line L1.
  • the straight line mentioned above does not have to mean a strict straight line as described above.
  • the curvature may be convex or concave.
  • the first region 61a may have an upward inclination angle in the direction from the connecting surface 54 to the second rising surface 62.
  • ⁇ 1 is, for example, 80 degrees or more and 90 degrees or less, 65 degrees or more and 80 degrees or less, 45 degrees or more and 65 degrees or less, or 0 degrees or more and less than 45 degrees. May be done.
  • the inclination angle ⁇ 1 may be obtained by measuring the inclination angle of the first region 61a in the cross section of the insert 11 along the straight line L1.
  • the inclination angle ⁇ 1 of the first region 61a is the lower side and the upper side of the first region 61a in the cross section of the insert 11 along the bisector of the corner portion 51. It may be obtained by measuring the inclination angle of the straight line connecting and.
  • the method of obtaining the inclination angle of the third region 62a which will be described later, may be the same as this.
  • the first region 61a may exhibit a convex shape toward the outside (cutting edge 41a) in plan perspective (cross-sectional view along the horizontal direction). Further, in a cross-sectional view along the horizontal direction, the first region 61a may have a curve that bends along the corner portion 51. This curve may appear in the whole, the central portion, or a portion distant from the central portion in the first region 61a in the vertical direction. However, in the cross-sectional view along the horizontal direction, the first region 61a may be configured not to include a curve. The size and shape of the first region 61a are arbitrary.
  • the sizes of the second regions 61b and 61b are arbitrary.
  • the second regions 61b and 61b may be larger than the first region 61a, may be the same size as the first region 61a, or may be smaller than the first region 61a.
  • one of the second regions 61b may be located on the right side of the first region 61a. Seen in the same direction, the other second region 61b may be located to the left of the first region 61a.
  • One second region 61b may be the same size as the other second region 61b, or may be different in size from the other second region 61b.
  • the second regions 61b, 61b are directed from the connecting surface 54 to the second rising surface 62. It may be straight.
  • the second regions 61b, 61b may be linearly curved from the connecting surface 54 toward the second rising surface 62. The curvature may be convex or concave with respect to the outside.
  • the second regions 61b and 61b may have an upward inclination angle in the direction from the connecting surface 54 to the second rising surface 62.
  • ⁇ 2 and ⁇ 2 are For example, it may be 60 degrees or more and 90 degrees or less, 35 degrees or more and 60 degrees or less, or more than 0 degrees and less than 45 degrees.
  • the inclination angles ⁇ 2 and ⁇ 2 of the second regions 61b and 61b may be obtained by measuring the inclination angle of the cross section along the straight line L2.
  • the second regions 61b and 61b When the second regions 61b and 61b are curved, it may be obtained by measuring, for example, the inclination angles ⁇ 2 and ⁇ 2 of a straight line connecting the lower side and the upper side of the second regions 61b and 61b.
  • the method of obtaining the inclination angles ⁇ 4 and ⁇ 4 of the fourth regions 62b and 62b, which will be described later, may be the same as this.
  • the tilt angles ⁇ 2 and ⁇ 2 of the second regions 61b and 61b may have the same magnitude as the tilt angle ⁇ 1 of the first region 61a, or may differ in magnitude from the tilt angle of the first region 61a. .. In the latter case, either may be larger than the other.
  • the inclination angles ⁇ 2 and ⁇ 2 of the second regions 61b and 61b may have the same size or may be different in size.
  • the second rising surface 62 may move upward as the distance from the cutting edge 41a increases. That is, the second rising surface 62 may have an ascending slope in the direction from the first rising surface 61 to the third rising surface 63.
  • the second rising surface 62 may have a third region 62a, a fourth region 62b, 62b, and a fifth region 62c, 62c.
  • the third region 62a may be connected to a portion along the corner portion 51 of the first rising surface 61.
  • the fourth regions 62b and 62b may be connected to portions along the side portions 52 and 52 of the first rising surface 61.
  • the fifth regions 62c and 62c may be connected to the fourth regions 62b and 62b, respectively.
  • the third region 62a may be along the corner portion 51.
  • the lower side of the third region 62a may be connected to the first region 61a, and the upper side may be connected to the third rising surface 63.
  • the size of the third region 62a is arbitrary.
  • the third region 62a may be larger, the same size, or smaller than the first region 61a.
  • the third region 62a is larger than the first region 61a.
  • the third region 62a may be a straight line from the first region 61a toward the third rising surface 63 in a cross-sectional view along a straight line L1 that bisects the corner portion 51.
  • FIG. 5A shows a curved linear third region 62a from the first region 61a to the third rising surface 63 in a cross-sectional view along the straight line L1.
  • the third region 62a which is curved in this way, may have a convex shape toward the outside (obliquely upward), for example, in a cross-sectional view along the straight line L1 (may have a concave shape).
  • the third region 62a may be a convex curve toward the corner 51 in a cross-sectional view along the horizontal direction while including the third region 62a.
  • the third region 62a has an upward inclination angle in the direction from the first region 61a toward the connecting surface 55.
  • the inclination angle ⁇ 3 may be, for example, 45 degrees or more and 90 degrees or less, 25 degrees or more and 90 degrees or less, or more than 0 degrees and less than 25 degrees.
  • the tilt angle ⁇ 3 may be smaller than, for example, the tilt angle ⁇ 1 of the first region 61a.
  • the shape of the third region 62a is arbitrary.
  • the third region 62a may have a substantially rectangular shape or a trapezoidal shape as a whole.
  • the first boundary Bo1 when the boundary between the first region 61a and the third region 62a is the first boundary Bo1, the first boundary Bo1 includes a portion located at least partially above the cutting edge 41a (corner portion 51). I'm out.
  • the first boundary Bo1 may be entirely located above the cutting edge 41a.
  • the first boundary Bo1 may be a convex curve toward the cutting edge 41a in a plan view.
  • the first boundary Bo1 may have a portion along the corner portion 51.
  • the fourth regions 62b, 62b may extend along the sides 52, 52. As shown in FIG. 4, in the fourth regions 62b and 62b, the lower side may be connected to the second regions 61b and 61b, and the upper side may be connected to the third rising surface 63.
  • the size and shape of the fourth regions 62b and 62b are arbitrary.
  • the fourth regions 62b and 62b may be larger, the same size, or smaller than the second regions 61b and 61b.
  • the shapes of the fourth regions 62b and 62b may be, for example, a rectangular shape or a trapezoidal shape.
  • the fourth regions 62b and 62b may extend straight from the second regions 61b and 61b toward the third rising surface 63, or may extend in a curved manner.
  • the curvature may be convex or concave with respect to the outside.
  • the inclination angles ⁇ 4 and ⁇ 4 may be, for example, 45 degrees or more and 90 degrees or less, 25 degrees or more and 90 degrees or less, or 0 degrees or more and less than 25 degrees. ..
  • the inclination angles ⁇ 4 and ⁇ 4 (in FIGS. 5B and 5C, only the inclination angle ⁇ 4 of one of the fourth regions 62b is shown) are smaller than the inclination angles ⁇ 2 and ⁇ 2 of the second regions 61b and 61b. Good.
  • the second boundaries Bo2 and Bo2 are at least partially below the cutting edge 41a in lateral view. It has a located part.
  • the portion farthest from the first boundary Bo1 may be located below the cutting edge 41a, and the portion closest to the first boundary Bo1 is above the cutting edge 41a. It may be located.
  • the second boundary Bo2 and Bo2 may be inclined downward in the direction away from the first boundary Bo1.
  • the second boundary Bo2, Bo2 may exhibit a linear shape extending along the side portions 52, 52.
  • the second boundaries Bo2 and Bo2 may be, for example, linear or curved.
  • the second boundary Bo2, Bo2 may have a portion along the side portions 52, 52.
  • the fifth regions 62c and 62c may extend from the fourth regions 62b and 62b to the outer edge of the upper surface 50 of the cutting portion, respectively.
  • the size and shape of the fifth regions 62c and 62c are arbitrary. In one embodiment, the fifth regions 62c, 62c may be larger than the second regions 61b, 61b.
  • the fifth regions 62c and 62c may be larger, smaller, or the same in size as compared with the fourth regions 62b and 62b.
  • the shapes of the fifth regions 62c and 62c may be, for example, a rectangular shape or a trapezoidal shape.
  • the fifth regions 62c and 62c may be inclined upward in the direction from the rake surface 53 to the third rising surface 63.
  • the fifth regions 62c and 62c that are inclined in this way may be linear or curved from the rake face 53 toward the third rising surface 63.
  • the curved shape may be concave or convex with respect to the outside.
  • the inclination angles of the fifth regions 62c and 62c are set to ⁇ 5 (not shown), the inclination angles ⁇ 5 and ⁇ 5 may be larger than, for example, the inclination angles ⁇ 4 and ⁇ 4 of the fourth regions 62b and 62b. It may be smaller or the same.
  • the third rising surface 63 may move upward as the distance from the cutting edge 41a increases. That is, the third rising surface 63 may have an upward slope in the direction from the second rising surface 61 toward the upper surface 31 of the main body.
  • the third rising surface 63 may have a sixth region 63a, a seventh region 63b, 63b, and an eighth region 63c, 63c.
  • the sixth region 63a may be connected to a portion (third region 62a) along the corner portion 51 of the second rising surface 62.
  • the seventh regions 63b and 63b may be connected to the portions (fourth regions 62b and 62b) along the side portions 52 and 52 of the second rising surface 62.
  • the eighth regions 63c and 63c are connected to the seventh regions 63b and 63b, respectively, and extend from the seventh regions 63b and 63b to the outer edge of the insert 11.
  • the sixth region 63a may be along the corner portion 51. As shown in FIG. 4, in the sixth region 63a, the lower side may be connected to the third region 62a and the upper side may be connected to the connecting surface 55. As for the description of the size and shape of the sixth region 63a, the description of the size and shape of the third region 62a may be incorporated.
  • the sixth region 63a may or may not be a curved surface.
  • the inclination angle of the sixth region 63a is ⁇ 6
  • the inclination angle ⁇ 6 may be smaller, larger, or the same as, for example, as compared with the inclination angle ⁇ 3 of the third region 62a. Good.
  • the seventh regions 63b and 63b may be along the sides 52 and 52. As shown in FIG. 4, in the seventh region 63b, 63b, the lower side may be connected to the fourth region 62b, 62b, and the upper side may be connected to the connection surface 55. As for the description of the size and shape of the seventh regions 63b and 63b, the description of the size and shape of the fourth regions 62b and 62b may be incorporated.
  • the seventh regions 63b and 63b may or may not be curved surfaces. Assuming that the inclination angles of the seventh region 63b are ⁇ 7 (only the inclination angle ⁇ 7 of one of the seventh regions 63b is shown in FIGS. 5B and 5C), the inclination angles ⁇ 7 and ⁇ 7 are, for example, the fourth. It may be smaller, larger, or the same as the inclination angles ⁇ 4 and ⁇ 4 of the regions 62b and 62b.
  • the eighth regions 63c and 63c connect the fifth regions 62c and 62c with the connecting surface 55.
  • the description of the size and shape of the eighth regions 63c and 63c the description of the size and shape of the fifth regions 62c and 62c may be incorporated.
  • the eighth regions 63c and 63c may or may not be curved surfaces.
  • the inclination angles of the eighth regions 63c and 63c are set to ⁇ 8 (not shown)
  • the inclination angles ⁇ 8 and ⁇ 8 may be larger than the inclination angles ⁇ 5 and ⁇ 5 of the fifth regions 62c and 62c. It may be small or the same.
  • the first region 61a, the third region 62a, and the sixth region 63a have portions located on a straight line L1 extending along the bisector of the corner portion 51 in a plan view.
  • the second regions 61b and 61b, the fourth regions 62b and 62b and the seventh regions 63b and 63b have portions located on the straight line L2 extending in the horizontal direction and orthogonal to the side portions 52 and 52. ..
  • the upper side and the lower side of the first region 61a, the third region 62a, and the sixth region 63a may be curved, for example.
  • the upper and lower sides of the second region 61b, 61b, the fourth to fifth regions 62b, 62b, 62c, 62c and the seventh to eighth regions 63b, 63b, 63c, 63c may be linear, for example.
  • the connecting surface 55 may be larger, smaller, or the same as the portion obtained by removing the connecting surface 55 from the upper surface 50 of the cutting portion.
  • the connecting surface 55 may be the surface located at the uppermost position among the surfaces constituting the upper surface 50 of the cutting portion.
  • the lower surface 22 of the insert 11 is located on the opposite side of the upper surface 21.
  • the lower surface 22 is a surface facing the holder 70 side when the insert 11 is fixed to the holder 70 (see FIG. 2). At this time, the lower surface 22 may come into contact with the holder 70.
  • the description of the shape of the lower surface 22 the description of the shape of the upper surface 21 may be incorporated.
  • the distance d1 (FIG. 5A) in the vertical direction from the lower side (lower edge) of the first region 61a to the lower surface 22 may be constant along the lower side of the first region 61a.
  • the constant here may be defined as, for example, that the distance does not change by 0.05 mm or more when viewed along the lower side of the first region 61a.
  • the entire boundary between the first region 61a and the connecting surface 54 also referred to as the third boundary Bo3 may extend along the horizontal direction.
  • the third boundary Bo3 mentioned above is the lower side of the first region 61a.
  • FIGS. 5A to 5C for convenience, the distance d1 and the distances d2 and d3 described later are shown shorter than these distances in FIG.
  • the distance from the lower side (lower edge) of the second regions 61b and 61b to the lower surface 22 (see FIG. 3) in the vertical direction may be shorter as the distance from the first region 61a is increased.
  • the distance from the second regions 61b and 61b to the lower surface 22 in the vicinity of the first region 61a is d2.
  • the distance from the second regions 61b and 61b to the lower surface 22 at a location away from the first region 61a is d3.
  • the relationship between the two may be d2> d3.
  • the lower sides of the second regions 61b and 61b may be inclined downward in a direction away from the first region 61a.
  • the inclination angle of the lower side may be, for example, 3 degrees or less, 10 degrees or less, 20 degrees or less, or 20 degrees or more.
  • the lower sides of the second regions 61b and 61b form a boundary between the second regions 61b and 61b and the connecting surface 54, and can also be referred to as a fourth boundary Bo4.
  • the side surface 23 is located between the upper surface 21 and the lower surface 22.
  • the side surface 23 may be a surface connecting the upper surface 21 and the lower surface 22.
  • the side surface 23 may be bulged toward the outside, may be recessed toward the inside, or may be a surface having no curvature. Further, the side surface 23 may be a smooth surface as a whole, or may be a surface having irregularities in places.
  • the side surface 23 may have a main body portion side surface 33 and a cutting portion side surface 43.
  • the side surface 33 of the main body constitutes a part of the side surface of the main body 30.
  • the side surface 43 of the cutting portion constitutes the rest of the side surface of the cutting portion 40.
  • the side surface 43 of the cutting portion may be continuous with the side surface 33 of the main body portion.
  • the cutting portion side surface 43 may include a flank surface 43a constituting the blade portion 41.
  • the flank 43a is connected to the rake face 53 and intersects the rake face 53 at a predetermined angle so that the insert 11 does not come into contact with the work material Ob more than necessary.
  • the cutting edge 41a is located at the boundary between the flank surface 43a and the rake surface 53. That is, it can be said that the cutting edge 41a includes the ridgeline of the flank surface 43a and the rake surface 53.
  • the holder 70 may have, for example, a length extending from the front end 70a (first end 70a) to the rear end 70b (hereinafter, also referred to as the second end 70b). As shown in the illustrated example, the holder 70 may have a rod shape.
  • the length of the holder 70 can be set arbitrarily. For example, the length of the holder 70 may be set in the range of 50 mm or more and 200 mm or less.
  • the size of the holder 70 can be set arbitrarily.
  • the width (horizontal direction) and thickness (vertical direction) of the holder 70 may be 10 mm or more, 19 mm or more, 25 mm or more, or 50 mm or more.
  • the width and thickness of the holders 70 may be the same or different from each other.
  • the thickness of the holder 70 may increase toward the tip 70a.
  • the material of the holder 70 can be set arbitrarily.
  • the material of the holder 70 may be steel, cast iron, or the like.
  • the toughness of the holder 70 can be increased.
  • the holder 70 may have a shank portion 71 and a fixing portion 72.
  • the shank portion 71 constitutes the second end 70b side of the holder 70.
  • the shank portion 71 may be, for example, a solid inside.
  • the shape of the shank portion 71 is arbitrary. For example, in a cross section perpendicular to the direction in which the shank portion 71 extends, the shank portion 71 may have a rectangular or circular shape. As shown in FIG. 2, the shank portion 71 may have a first surface 71a, a second surface 71b, a third surface 71c, and a fourth surface 71d.
  • the first surface 71a may face the direction in which the flank 43a of the insert 11 faces.
  • the second surface 71b may be located on the opposite side of the first surface 71a.
  • the third surface 71c may connect the first surface 71a and the second surface 71b and face the direction in which the rake surface 53 faces.
  • the fourth surface 71d may connect the first surface 71a and the second surface 71b and may be located on the opposite side of the third surface 71c.
  • the first to fourth surfaces 71d may be the surface of the shank portion 71 that connects the second end 70b and the fixing portion 72.
  • the fixing portion 72 is located on the first end 70a side of the holder 70.
  • An insert 11 capable of cutting the work material Ob is fixed to the fixing portion 72.
  • the insert 11 may be fitted in the pocket 72a lacking a part of the fixing portion 72.
  • the insert 11 may be fixed by being urged downward by the clamp 13.
  • the tip of the clamp 13 for urging the insert 11 toward the holder 70 may be inserted into the through hole 11a formed in the insert 11.
  • the insert 11 may be sandwiched between the bottom surface of the pocket 72a and the clamp 13 and fixed to the holder 70.
  • the clamp 13 may be fixed by a screw screwed into the holder 70.
  • the fixing portion 72 constitutes the first end 70a side of the holder 70.
  • FIG. 7 shows each step of the work material cutting method.
  • the work material cutting method may start from, for example, a step of attaching the work material Ob to the machine tool Mt (a step of fixing the work material). After that, for example, the cutting tool 10 may be attached to the machine tool Mt (for example, the tool post) (step of fixing the tool).
  • the step of fixing the work material may be performed, for example, after the step of fixing the tool is completed.
  • the cutting tool 10 (insert 11) may be positioned (positioning step). For example, the size and / or shape of the work material Ob may be confirmed, and the positional relationship between the work material Ob and the cutting tool 10 may be confirmed. The positioning step may be performed manually (visually) or automatically.
  • the work material Ob is rotated via the machine tool Mt (rotation process). While the work material Ob is rotating, the cutting tool 10 may be brought into contact with the work material Ob via the machine tool Mt (cutting process). Specifically, the cutting portion 40 of the insert 11 may be brought into contact with the work material Ob. Then, the work material Ob is cut until it has a desired size and shape.
  • the cutting tool 10 may be separated from the work material Ob (step of releasing the cutting tool). After that, the rotation of the work material Ob is stopped (stop process), and the work material Ob is removed from the machine tool Mt (work material removal process). Thereby, the cut work material Ob can be obtained.
  • FIGS. 8A-8C show a diagram in which the blade portion 41 comes into contact with the work material Ob (see FIG. 1), whereby the work material Ob is cut.
  • the cut portion becomes chip Du.
  • the cutting is performed only around the corner portion 51 of the insert 11, and a small chip Du is generated from the work material Ob.
  • the cut of the insert 11 with respect to the work material Ob is large, the cutting is performed by the corner portions 51 and the side portions 52 and 52, and a large chip Du is generated from the work material Ob.
  • FIG. 8A shows a diagram in which the work material Ob is cut only at a part of the corner portion 51 of the insert 11, and as a result, chip Du having a small width is generated.
  • the chip Du having a small width generated by cutting is, for example, the boundary between the first region 61a along the corner portion 51 and the second regions 61b and 61b along the side portions 52 and 52 via the rake face 53. Proceed toward the vicinity of Bo0.
  • the entire first boundary Bo1 which is the boundary between the first region 61a and the third region 62a, is located above the cutting edge 41a.
  • the chip Du can come into contact with the first region 61a (first rising surface 61) more reliably. In other words, the chip Du can be brought into contact with the first region 61a to more reliably reduce the speed of the chip Du.
  • FIG. 8B shows a diagram in which the work material Ob is cut in a wide range at the corner portion 51 of the insert 11 to generate chips Du having a small width.
  • the small-width chip Du generated by cutting advances toward the first region 61a along the corner portion 51, for example, through the rake face 53.
  • the entire first boundary Bo1 which is the boundary between the first region 61a and the third region 62a, is located above the cutting edge 41a. Since the entire first boundary Bo1 is located above the cutting edge 41a, the chip Du can come into contact with the first region 61a (first rising surface 61) more reliably. In other words, the chip Du can be brought into contact with the first region 61a to more reliably reduce the speed of the chip Du.
  • FIG. 8C shows a diagram in which the work material Ob is cut around the corner portion 51 and the side portions 52, 52 of the insert 11, thereby generating chips Du having a large width.
  • the large-width chip Du generated by cutting is directed to the first region 61a along the corner portion 51 and the second regions 61b and 61b along the side portions 52 and 52, for example, via the rake face 53.
  • the second boundaries Bo2 and Bo2 which are the boundaries between the second regions 61b and 61b and the fourth regions 62b and 62b, have a portion located below the cutting edge 41a.
  • the chip Du toward the first region 61a and the second regions 61b and 61b is positioned below the cutting edge 41a. It can be guided to the second boundary Bo2 and Bo2 side. As a result, the contact of the thick chip Du with the first rising surface 61 is reduced. Thick chip Du slowdown is reduced.
  • the chip Du generated from the work material Ob becomes smaller in width.
  • a chip Du (thin chip Du) having a small width is unstable in the traveling direction, and sometimes heads toward the work material Ob while having a predetermined speed.
  • the entire first boundary Bo1 which is the boundary between the first region 61a and the third region 62a in the present disclosure, is located above the corner portion 51 (cutting edge 41a).
  • the chip Du generated from the work material Ob travels along the rake face 53, and there is a high probability that the first region 61a (first region 61a) It comes into contact with the rising surface 61).
  • the speed of the chip Du can be reduced.
  • the chip Du generated from the work material Ob becomes large in width.
  • a wide chip Du thin chip Du
  • the second boundaries Bo2 and Bo2 which are the boundaries between the second regions 61b and 61b and the fourth regions 62b and 62b, have a portion located below the side portions 52 and 52 (cutting blade 41a). There is. Since at least a part of the second boundary Bo2 and Bo2 is located below the cutting edge 41a, the thick chip Du is guided to the second boundary Bo2 and Bo2 side located below the cutting edge 41a. Thereby, the probability of contacting the first rising surface 61 can be reduced. As a result, it is possible to reduce the decrease in the speed of the thick chip Du.
  • the insert 11 of the present disclosure when the chip Du is thin, the speed is reduced, and when the chip Du is thick, the speed reduction can be reduced. That is, it is possible to reduce the risk of the chip Du heading toward the work material Ob and the risk of the chip Du staying on the insert 11. Therefore, it is possible to provide the insert 11 capable of stable cutting.
  • the second boundary Bo2 and Bo2 extend along the side portions 52 and 52, and the portion farthest from the first boundary Bo1 is located below the side portions 52 and 52 (cutting blade 41a). Since the portion of the second boundary Bo2 and Bo2 farthest from the first boundary Bo1 is located below the cutting edge 41a, the thick chip Du can more reliably proceed along the second regions 61b and 61b. Can be done. Thereby, it is possible to further reduce the contact of the thick chip Du with the first region 61a. As a result, it is possible to provide an insert 11 capable of more stable cutting.
  • the portion closest to the first boundary Bo1 is located above the side portions 52 and 52 (cutting blade 41a). Since the portion of the second boundary Bo2 and Bo2 closest to the first boundary Bo1 is located above the cutting edge 41a, even when the fine chip Du generated by cutting is directed to the second regions 61b and 61b, The first surface 71a allows reliable contact. This makes it possible to provide an insert 11 capable of more stable cutting.
  • the first boundary Bo1 is a convex curve toward the cutting edge 41a.
  • the first region 61a includes a convex curved surface toward the cutting edge 41a.
  • the chip Du in contact with the first region 61a is advanced along the convex curved surface, and the second regions 61b and 61b are formed. It can be separated from the work material Ob through the work material Ob. Therefore, it is possible to further reduce the amount of chips Du heading toward the work material Ob.
  • the second boundaries Bo2 and Bo2 are linear. Since the second boundaries Bo2 and Bo2 are straight lines, the heights of the second regions 61b and 61b gradually change along the second boundaries Bo2 and Bo2. Thereby, the chip Du that contacts the first rising surface 61 and the chip Du that does not contact the first rising surface 61 can be separated according to the size of the width. This makes it possible to provide the insert 11 capable of more stable cutting.
  • the first region 61a is a convex curve toward the corner 51 in a cross-sectional view along the horizontal direction.
  • the chip Du in contact with the first region 61a can be more reliably advanced along the convex curved surface and separated from the work material Ob via the second regions 61b and 61b.
  • the first region 61a is a straight line in the cross-sectional view of the cutting insert 11 along the bisector of the corner portion 51.
  • the chip Du in contact with the first region 61a can be advanced upward, and the chip Du can be reduced from staying on the first rising surface 61.
  • the third region 62a is a convex curve toward the corner 51 in a cross-sectional view along the horizontal direction. As a result, for example, it becomes easy to advance the chip Du that has advanced upward from the first region 61a further upward.
  • the third region 62a is an outwardly convex curve in cross-sectional view along the bisector of the corner 51. This makes it easy to move the chip Du to the second regions 61b and 61b. It is possible to reduce the chip Du from staying on the second rising surface 62. As a result, it is possible to provide an insert 11 capable of more stable cutting.
  • the cutting tool 10 has an insert 11 fixed to the first end 70a side. As a result, it is possible to provide a cutting tool 10 capable of stably cutting the work material Ob.
  • FIG. 9 shows a cross-sectional view of the insert 11A in the modified example.
  • FIG. 9 corresponds to FIG. 5A.
  • reference numerals are used and detailed description thereof will be omitted.
  • the upper surface 50A of the cutting portion may have a corner portion 51, side portions 52 and 52, a rake surface 53, and a rising surface 60A.
  • the first rising surface 61A is connected to the lower side of the rake surface 53.
  • the first rising surface 61A is inclined upward in the direction from the rake face 53 to the second rising surface 62.
  • the first region 61Aa may be connected to the lower side of the rake face 53 along the corner portion 51.
  • the groove formed by the rake face 53 and the first region 61Aa may exhibit a substantially V shape (including a substantially U shape) in a cross-sectional view that bisects the corner portion 51. Good. That is, the rising surface 60 (first rising surface 61) may be separated from the cutting edge 41a only through the rake face 53.
  • the third boundary Bo3 may be the boundary between the first region 61Aa and the rake face 53.
  • the fourth boundary Bo4 may be the boundary between the second region 61Ab and the rake face 53.
  • inserts and cutting tools in the present disclosure are not limited to the embodiments and modifications described above.
  • the following are some examples of inserts and cutting tools with deformed shapes.
  • the rising surface is composed of the first to third rising surfaces.
  • the third rising surface may be omitted if necessary. That is, the second rising surface may be directly connected to the connecting surface.
  • the third region may be connected to a portion along the corner portion of the connecting surface, or the fourth region may be connected to a portion along the side portion of the connecting surface.
  • the illustrated cutting tool is right-handed.
  • the cutting tool in the present disclosure is not limited to right-handed cutting tools, and can also be applied to left-handed cutting tools.
  • the cutting tool in the present disclosure can be applied without permission.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
PCT/JP2020/046298 2019-12-11 2020-12-11 インサート、切削工具及び同切削工具を用いた被削材切削方法 Ceased WO2021117872A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US17/757,145 US12454011B2 (en) 2019-12-11 2020-12-11 Insert, cutting tool, and method for cutting workpiece using the cutting tool
DE112020005293.1T DE112020005293B4 (de) 2019-12-11 2020-12-11 Einsatz, schneidwerkzeug und verfahren zum schneiden eines werkstücks mit dem schneidwerkzeug
CN202080084862.0A CN114786849B (zh) 2019-12-11 2020-12-11 刀片、切削工具以及使用该切削工具的被切削件切削方法
JP2021564061A JP7295972B2 (ja) 2019-12-11 2020-12-11 インサート、切削工具及び同切削工具を用いた被削材切削方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019223521 2019-12-11
JP2019-223521 2019-12-11

Publications (1)

Publication Number Publication Date
WO2021117872A1 true WO2021117872A1 (ja) 2021-06-17

Family

ID=76330009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/046298 Ceased WO2021117872A1 (ja) 2019-12-11 2020-12-11 インサート、切削工具及び同切削工具を用いた被削材切削方法

Country Status (5)

Country Link
US (1) US12454011B2 (https=)
JP (1) JP7295972B2 (https=)
CN (1) CN114786849B (https=)
DE (1) DE112020005293B4 (https=)
WO (1) WO2021117872A1 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020090737A1 (ja) * 2018-10-29 2020-05-07 京セラ株式会社 切削インサート、切削工具及び切削加工物の製造方法
JP7269540B1 (ja) * 2022-09-28 2023-05-09 株式会社タンガロイ 切削インサート

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010069614A (ja) * 2008-08-22 2010-04-02 Mitsubishi Materials Corp 切削インサート
JP2013505845A (ja) * 2009-10-02 2013-02-21 セラティチット オーストリア ゲゼルシャフト ミット ベシュレンクテル ハフツング 切削工具のための切削インサート
WO2018042957A1 (ja) * 2016-08-31 2018-03-08 住友電工ハードメタル株式会社 切削インサート

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11197911A (ja) * 1998-01-19 1999-07-27 Mitsubishi Materials Corp スローアウェイチップ
KR100312957B1 (ko) * 1999-07-31 2001-11-07 유창종 광범위 칩브레이커 붙이 절삭 인써트
US6848868B2 (en) * 2001-04-23 2005-02-01 Kennametal Inc. Multiple groove chip control for cutting insert
JP4704212B2 (ja) 2004-01-14 2011-06-15 住友電工ハードメタル株式会社 スローアウェイチップ
JP4729894B2 (ja) * 2004-09-15 2011-07-20 三菱マテリアル株式会社 インサートおよびスローアウェイ式切削工具
KR100661527B1 (ko) * 2006-03-31 2006-12-26 한국야금 주식회사 개선된 칩브레이커를 가지는 절삭 인서트
US7476064B2 (en) * 2006-04-27 2009-01-13 Kyocera Corporation Cutting tool and method of cutting workpiece
KR100832869B1 (ko) * 2006-07-20 2008-05-28 한국야금 주식회사 절삭저항을 감소시키는 절삭 인서트
JP5260924B2 (ja) * 2007-09-14 2013-08-14 京セラ株式会社 切削インサート及びそれを用いた切削工具並びに切削方法
JP5197070B2 (ja) * 2008-02-29 2013-05-15 京セラ株式会社 切削インサート及び切削工具、並びに切削方法
JP5158490B2 (ja) * 2008-03-06 2013-03-06 住友電工ハードメタル株式会社 刃先交換式切削チップ
JP2009233799A (ja) * 2008-03-27 2009-10-15 Kyocera Corp 切削インサート及び切削工具、並びに切削方法
JP4597269B2 (ja) * 2008-11-21 2010-12-15 京セラ株式会社 切削インサートおよび切削工具並びにそれを用いた切削方法
KR101039888B1 (ko) * 2008-12-31 2011-06-09 한국야금 주식회사 절삭인서트
JP5365285B2 (ja) * 2009-03-18 2013-12-11 三菱マテリアル株式会社 切削インサート
KR101107444B1 (ko) * 2009-06-10 2012-01-19 대구텍 유한회사 절삭 공구 및 절삭 공구용 인서트
BR112012006490B1 (pt) * 2009-09-25 2020-09-29 Tungaloy Corporation Inserto de corte com uma borda de corte
CN102548689B (zh) * 2009-10-15 2014-06-04 株式会社钨钛合金 切削刀片
US8997610B2 (en) * 2009-11-27 2015-04-07 Kyocera Corporation Cutting insert, cutting tool, and method of manufacturing machined product using the same
JP5315569B2 (ja) * 2010-03-29 2013-10-16 住友電工ハードメタル株式会社 切削インサート
WO2012002267A1 (ja) * 2010-06-30 2012-01-05 京セラ株式会社 インサートおよび切削工具、並びにそれらを用いた切削加工物の製造方法
JP5853613B2 (ja) * 2010-11-15 2016-02-09 三菱マテリアル株式会社 切削インサート
US9199312B2 (en) * 2011-03-07 2015-12-01 Kennametal Inc. Cutting insert with discrete cutting tip and chip control structure
KR20130048531A (ko) * 2011-11-02 2013-05-10 대구텍 유한회사 선삭 가공용 절삭 인서트
JP5926366B2 (ja) * 2012-02-29 2016-05-25 京セラ株式会社 切削インサート、切削工具および切削加工物の製造方法
SE536986C2 (sv) * 2013-03-20 2014-11-25 Sandvik Intellectual Property Månghörnigt svarvskär med spånkontrollerande styrytor
JP6096895B2 (ja) * 2013-05-28 2017-03-15 京セラ株式会社 切削インサートおよび切削工具ならびにそれを用いた切削加工物の製造方法
JP2015000446A (ja) * 2013-06-14 2015-01-05 三菱マテリアル株式会社 切削インサート
US10029311B2 (en) * 2013-10-29 2018-07-24 Kyocera Corporation Cutting insert, cutting tool, and method of manufacturing machined product using them
CN103551615B (zh) * 2013-11-01 2016-01-20 株洲欧科亿硬质合金有限公司 可转位双面切削刀片
EP3078438B1 (en) * 2013-12-03 2020-02-26 Tungaloy Corporation Cutting insert and cutting tool comprising same
CN105939804B (zh) * 2014-02-07 2018-09-04 株式会社泰珂洛 切削刀片
US9796024B2 (en) * 2014-04-07 2017-10-24 Kennametal India Limited Cutting insert with enhanced chip breaking performance
WO2017135469A1 (ja) * 2016-02-05 2017-08-10 京セラ株式会社 インサート、切削工具及び切削加工物の製造方法
US10710167B2 (en) * 2017-08-02 2020-07-14 Iscar, Ltd. Negative finish turning insert with chip forming arrangement
JP6940334B2 (ja) * 2017-08-29 2021-09-29 京セラ株式会社 切削インサート、切削工具及び切削加工物の製造方法
JP2019141936A (ja) 2018-02-16 2019-08-29 三菱マテリアル株式会社 切削インサート
EP3560638B1 (en) * 2018-04-26 2021-01-13 AB Sandvik Coromant Turning insert

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010069614A (ja) * 2008-08-22 2010-04-02 Mitsubishi Materials Corp 切削インサート
JP2013505845A (ja) * 2009-10-02 2013-02-21 セラティチット オーストリア ゲゼルシャフト ミット ベシュレンクテル ハフツング 切削工具のための切削インサート
WO2018042957A1 (ja) * 2016-08-31 2018-03-08 住友電工ハードメタル株式会社 切削インサート

Also Published As

Publication number Publication date
US12454011B2 (en) 2025-10-28
US20230056761A1 (en) 2023-02-23
CN114786849A (zh) 2022-07-22
DE112020005293T5 (de) 2022-08-18
JPWO2021117872A1 (https=) 2021-06-17
DE112020005293B4 (de) 2024-05-16
CN114786849B (zh) 2024-07-30
JP7295972B2 (ja) 2023-06-21

Similar Documents

Publication Publication Date Title
US9199312B2 (en) Cutting insert with discrete cutting tip and chip control structure
EP2623236B1 (en) Cutting insert, cutting tool with said cutting insert, and method for producing cut product using said cutting tool
JP7168655B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
WO2021246321A1 (ja) 切削インサート、切削工具及び切削加工物の製造方法
US7264425B1 (en) Tool
WO2021117872A1 (ja) インサート、切削工具及び同切削工具を用いた被削材切削方法
US11980945B2 (en) Cutting insert, cutting tool, and method for manufacturing machined product
KR102367686B1 (ko) 절삭 인서트, 절삭 공구, 및 절삭 가공물의 제조 방법
JP7325510B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP7381599B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP7370392B2 (ja) インサート、切削工具及び同切削工具を用いた被削材切削方法
JP7592867B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP6990245B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP7630531B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
KR102540681B1 (ko) 절삭 인서트, 절삭 공구 및 절삭 가공물의 제조 방법
JP7417494B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP7739448B2 (ja) 切削インサート、切削工具、及び切削加工物の製造方法
JP7177908B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP7204882B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP2019130647A (ja) 切削インサート、切削工具及び切削加工物の製造方法
JP7239480B2 (ja) 切削インサート、切削工具及び切削加工物の製造方法
WO2026042420A1 (ja) 切削インサート、切削工具及び切削加工物の製造方法
WO2021241623A1 (ja) 切削インサート、切削工具及び切削加工物の製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20898535

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021564061

Country of ref document: JP

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 20898535

Country of ref document: EP

Kind code of ref document: A1

WWG Wipo information: grant in national office

Ref document number: 17757145

Country of ref document: US