WO2018159499A1 - Plaquette de coupe, outil de coupe et procédé de fabrication de pièce coupée - Google Patents

Plaquette de coupe, outil de coupe et procédé de fabrication de pièce coupée Download PDF

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Publication number
WO2018159499A1
WO2018159499A1 PCT/JP2018/006775 JP2018006775W WO2018159499A1 WO 2018159499 A1 WO2018159499 A1 WO 2018159499A1 JP 2018006775 W JP2018006775 W JP 2018006775W WO 2018159499 A1 WO2018159499 A1 WO 2018159499A1
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WIPO (PCT)
Prior art keywords
groove
edge
cutting
corner
cutting insert
Prior art date
Application number
PCT/JP2018/006775
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English (en)
Japanese (ja)
Inventor
義仁 池田
Original Assignee
京セラ株式会社
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 京セラ株式会社 filed Critical 京セラ株式会社
Priority to JP2019502963A priority Critical patent/JP7017553B2/ja
Publication of WO2018159499A1 publication Critical patent/WO2018159499A1/fr

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    • 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
    • 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
    • B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
    • 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
    • B23B27/22—Cutting tools with chip-breaking equipment

Definitions

  • the present disclosure relates to a cutting insert, a cutting tool, and a manufacturing method of a cut workpiece.
  • Patent Document 1 As an example of a cutting insert used for cutting, a throw-away tip (cutting insert) described in International Publication No. 2005/068117 (Patent Document 1) is known.
  • a super-hard sintered body having a cutting edge and a chip breaker is joined to the apex portion of the main body.
  • the chip breaker has a substantially symmetric shape with respect to a cross section that bisects the apex angle portion, and includes a projection portion and a flat portion positioned between the apex angle portion and the projection portion.
  • a cutting insert having such a sintered body is used for cutting work materials such as high hardness iron group metals and cast iron.
  • the present disclosure provides a cutting insert that exhibits good chip disposal even when a plurality of work materials having different hardnesses are cut at once, even when the surface of the work material having low hardness is processed. For the purpose.
  • the cutting insert based on this indication is provided with the 1st member and the 2nd member joined to the 1st member.
  • the second member has an upper surface, a side surface adjacent to the upper surface, and a ridge portion located at the intersection of the upper surface and the side surface.
  • the top surface is located along a first side, a second side, a corner located between the first side and the second side, the corner, the first side, and the second side, An edge that is inclined upward as it is away from the ridge, or the height of the ridge is the same, and a protrusion that is located inward of the ridge and protrudes upward And a first groove located between the edge and the protrusion.
  • the first width of the first groove in the direction perpendicular to the bisector of the corner is smaller than the second width of the protrusion in the direction perpendicular to the bisector.
  • FIG. 3 is an enlarged view of a region B1 in FIG. It is an enlarged view which shows the same area
  • FIG. It is a perspective view which shows the cutting insert which concerns on 2nd Embodiment of this indication. It is a top view of the cutting insert shown in FIG. It is an enlarged view of area
  • the insert 1 (hereinafter also simply referred to as the insert 1) according to the first embodiment of the present disclosure will be described with reference to FIGS.
  • the insert 1 of the present disclosure is an insert used for turning, and has a polygonal plate shape, more specifically, a square plate shape.
  • the insert 1 includes a first member (main body portion) 11 and a second member (super-hard sintered body portion) 12 joined to the main body portion 11. ing.
  • the main body 11 may be a part of the insert 1 for mainly attaching the insert 1 to the holder.
  • the sintered body portion 12 may be a portion mainly related to cutting in the insert 1 or may function as a cutting portion.
  • the main body 11 has a substantially square plate shape having two main surfaces 4 each having four corners. And the sintered compact part 12 is located in the part corresponding to one corner in one of the two main surfaces 4. That is, the main body 11 has a recess located at a portion corresponding to one corner on one of the two main surfaces 4, and the sintered body 12 is positioned in this recess. At this time, the sintered body portion 12 may be joined to the main body portion 11.
  • the other of the two main surfaces 4 can function as a seating surface attached to the holder 105 when the insert 1 is mounted on the holder 105.
  • the two main surfaces 4 are located away from each other. Therefore, it can be said that one main surface 4 is located on the opposite side of the other main surface 4.
  • the upper surface 3 in the example shown in FIG. 2 has a first side 3b1, a second side 3b2, and a corner 3a located between the first side 3b1 and the second side 3b2.
  • the upper surface 3 includes a corner 3 a and a first side 3 b 1 and a second side 3 b 2 that respectively extend from the corner 3 a.
  • the upper surface 3 is a surface through which chips mainly flow during cutting, and may function as a so-called rake surface.
  • the upper surface 3 is the upper surface because it is located on the upper side of the cutting tool 101 when the insert 1 is mounted on the holder 105 as will be described later, but is not limited thereto. That is, the upper surface 3 may not be positioned on the upper side in the cutting tool 10.
  • the top surface 3 may be a polygonal shape when viewed from above, and may have a plurality of corners and a plurality of sides.
  • the upper surface 3 in the example illustrated in FIG. 2 has a triangular shape, and includes at least a corner 3a, a first side 3b1, and a second side 3b2.
  • the polygonal shape does not mean a strictly polygonal shape.
  • the corner 3a on the upper surface 3 is not limited to a strict corner.
  • the side located so as to connect adjacent corners is not limited to a strict straight line.
  • the corner 3a shown in FIG. 2 has a curved shape that protrudes outward in a top view.
  • the top view means a state where the top surface 3 of the insert 1 is viewed from the front.
  • the main surface 4 of the main body portion 11 can be rephrased as a flat surface region located inward of the upper surface 3 of the sintered body portion 12.
  • the shape of the main surface 4 in the example illustrated in FIG. 1 has a quadrangular shape
  • the shape of the main surface 4 is not limited thereto.
  • the shape of the main surface 4 may be a triangle or a pentagon.
  • “inward” in the present specification means near the center of the upper surface of the upper surface of the insert 1 (the main surface 4 of the main body 11 and the upper surface 3 of the sintered body 12) in the top view. It is a side that is located and is away from the corner 3a and the first side 3b1 and the second side 3b2.
  • the lower surface 5 is located away from the upper surface 3 with the side surface 6 interposed therebetween, and in the example shown in FIG. 1, the lower surface 5 of the sintered body portion 12 is in contact with the main body portion 11.
  • the lower surface 5 may be a main surface joined to the main body portion 11 in the sintered body portion 12.
  • the side surface 6 is located between the upper surface 3 and the lower surface 5 and is adjacent to the upper surface 3 and the lower surface 5.
  • the side surface 6 may have a plurality of flat surface regions.
  • the side surface 6 may function as a so-called flank.
  • the insert 1 may include a through hole 13 that opens at the center of one main surface 4 and the center of the other main surface 4.
  • a member for fixing the insert 1 to the holder of the cutting tool may be inserted into the through hole 13.
  • a screw member and a clamp member are mentioned, for example.
  • the central axis of the through hole 13 may coincide with an imaginary straight line (center axis O1) passing through the centers of the two main surfaces 4. Further, the central axis of the through hole 13 may coincide with the central axis O1 of the insert 1.
  • the central axis of the through-hole 13 may be replaced with the central axis O1 of the insert 1. Even when it is difficult to specify the center axis 1 of the insert 1, the center axis of the through hole 13 may be replaced with the center axis O ⁇ b> 1 of the insert 1.
  • the central axis O1 of the insert 1 is an axis that penetrates the two main surfaces 4.
  • Examples of the material of the main body 11 include cemented carbide and cermet.
  • Examples of the composition of the cemented carbide include WC—Co, WC—TiC—Co, and WC—TiC—TaC—Co.
  • WC—Co is produced by adding cobalt (Co) powder to tungsten carbide (WC) and sintering.
  • WC—TiC—Co is obtained by adding titanium carbide (TiC) to WC—Co.
  • WC—TiC—TaC—Co is obtained by adding tantalum carbide (TaC) to WC—TiC—Co.
  • a cermet is a sintered composite material in which a metal is combined with a ceramic component.
  • the cermet includes a main component of a titanium compound such as titanium carbide (TiC) and titanium nitride (TiN).
  • the surface of the main body 11 may be coated with a film using a chemical vapor deposition (CVD) method or a physical vapor deposition (PVD) method.
  • CVD chemical vapor deposition
  • PVD physical vapor deposition
  • the composition of the coating include titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN), and alumina (Al 2 O 3 ).
  • Examples of the material of the sintered body 12 include a cBN sintered body and a diamond sintered body.
  • the sintered body portion 12 in the example shown in FIG. 1 has the upper surface 3, the lower surface 5, and the side surface 6.
  • the sintered compact part 12 in an example shown in FIG. 1 has the ridge part 2 in which the upper surface 3 and the side surface 6 are located in an intersection.
  • a cutting blade may be positioned at least at a part of the ridge 2 in the sintered body 12. In the example illustrated in FIG. 2, the cutting edge is located at a portion corresponding to the corner 3 a, the first side 3 b 1, and the second side 3 b 2 in the ridge 2.
  • the cutting blade is used for cutting a work material in a cutting process.
  • honing processing may be given to the part in which the cutting edge in the ridge part 2 is located.
  • honing processing R honing etc. are mentioned, for example.
  • the cutting edge is located in the portion corresponding to the corner 3 a, the first side 3 b 1, and the second side 3 b 2 in the ridge portion 2, but is not limited thereto.
  • the cutting edge may be positioned at least at the corner 3a and a part of the first side 3b1.
  • the cutting edge may have a first cutting edge 21 located on the first side 3 b 1 of the upper surface 3.
  • the first cutting edge 21 may function as a so-called main cutting edge.
  • the cutting blade may have the 2nd cutting blade 22 located in the corner
  • the second cutting edge 22 may function as a so-called corner cutting edge.
  • the upper surface 3 in the present disclosure includes an edge portion 7, a protruding portion 8, and a first groove 9, as shown in FIGS.
  • the edge 7 is located along the corner 3a, the first side 3b1, and the second side 3b2 in the upper surface 3.
  • the edge portion 7 is inclined upward as it is away from the ridge portion 2 or has the same height as the ridge portion 2.
  • the edge portion 7 in the example shown in FIGS. 5 to 10 is a flat surface region having a generally constant height from the lower surface 5.
  • the edge 7 is a flat surface region that is connected to the corner 3a, the first side 3b1, and the second side 3b2 and extends inward from the corner 3a, the first side 3b1, and the second side 3b2. There may be.
  • the edge portion 7 may function as a so-called rake face through which chips generated by the cutting blade pass. Note that the height from the lower surface 5 is not necessarily constant in a strict sense.
  • the protruding portion 8 is located inward of the upper surface 3 relative to the edge portion 7 and protrudes upward.
  • the first groove 9 is located between the edge portion 7 and the protruding portion 8. At this time, the first groove 9 is recessed downward so as to be positioned below the edge portion 7 and the protruding portion 8. As in the example shown in FIG. 5, the first groove 9 may extend along the corner 3a, the first side 3b1, and the second side 3b2. As shown in FIG. 5, the first groove 9 may be connected to the protruding portion 8.
  • the protruding portion 8 and the first groove 9 are located in the direction in which the chips that have passed through the edge portion 7 flow, and can be used to control the flow of the chips. That is, the protrusion 8 and the first groove 9 may have a role of curving the chips or controlling the direction in which the chips flow.
  • the width of the first groove 9 (hereinafter referred to as the first width) W1 in the direction perpendicular to the bisector M of the corner 3a is two of the corner 3a. It is smaller than the width (hereinafter referred to as the second width) W2 of the protruding portion 8 in the direction perpendicular to the equipartition M.
  • generated on the cutting conditions with a small cutting amount tends to contact the protrusion part 8 stably after passing the 1st groove
  • the first width W1 may be evaluated by the maximum width of the first groove 9 in the direction perpendicular to the bisector M of the corner 3a, for example, as shown in FIG.
  • the second width W2 may be evaluated by, for example, the maximum width of the protruding portion 8 in the direction perpendicular to the bisector M of the corner 3a.
  • the second width W2 is the same as the maximum width of the sintered body portion 12 in the direction perpendicular to the bisector M of the corner 3a.
  • each component of the upper surface 3 along the central axis O1 of the insert 1 where the direction from the lower surface 5 to the upper surface 3 is “upward” and the direction from the upper surface 3 to the lower surface 5 is “downward”. May be evaluated.
  • the protrusion 8 on the upper surface 3 protrudes upward means that the protrusion 8 protrudes in a direction away from the lower surface 5.
  • the direction along the central axis O1 of the insert 1 is defined as the height direction.
  • the lower surface 5 in the sintered body portion 12 or the other main surface 4 in the main body portion 11 may be used as a reference surface.
  • a virtual plane that is orthogonal to the central axis O1 and located between the upper surface 3 and the lower surface 5 may be set, and this virtual plane may be used as a reference surface.
  • the protrusion 8 is positioned higher than the ridge 2 with respect to the height of the ridge 2. Further, the first groove 9 is located lower than the ridge 2. Therefore, in the region from the first groove 9 to the protruding portion 8, the portion having the same height as the ridge portion 2 corresponds to the boundary between the protruding portion 8 and the first groove 9.
  • the edge 7 is parallel to the main surface 4 of the main body 11.
  • the edge portion 7 is a flat surface perpendicular to the central axis O1 of the insert 1 (the central axis of the through hole 13).
  • the first groove 9 may be separated from the ridge 2, and the edge 7 may be located between the first groove 9 and the ridge 2.
  • the strength of the cutting blade is high.
  • the edge portions 7 are located between the corner 3 a, the first side 3 b 1 and the second side 3 b 2 in the ridge portion 2, and the first groove 9.
  • a line orthogonal to the first side 3b1 is defined as a first virtual line L1
  • a line orthogonal to the second side 3b2 is defined as a second virtual line L2.
  • an intersection point closest to the corner 3a among the intersection points of the first virtual line L1 and the second virtual line L2 is defined as an intersection point P.
  • the second side passes through the boundary between the corner 3a and the first side 3b1, passes through the straight line perpendicular to the first side 3b1, passes through the boundary between the first imaginary line L1, the corner 3a and the second side 3b2.
  • a straight line perpendicular to 3b2 is defined as a second virtual line L2.
  • the portion corresponding to the bisector M may be located closer to the corner 3a than the intersection P in the first groove 9 in a top view.
  • channel 9 located on the bisector M may be located near the corner
  • the first groove 9 has the above-described configuration, chips can be stably brought into contact with the rising portion of the first groove 9 even in a cutting process with a small feed amount. Therefore, chips can be curled well.
  • the portion of the first groove 9 located above the bisector M since the portion of the first groove 9 located above the bisector M only needs to be located within the corner region 31, the entire first groove 9 is not necessarily within the corner region 31. It does not have to be located.
  • the tip of the protruding portion 8 may be located on the corner 3a side from the intersection P of the first virtual line L1 and the second virtual line L2.
  • tip part of the protrusion part 8 means the edge part located closest to the corner
  • the first groove 9 When viewed from above, the first groove 9 may be separated from the edge 7 or may be connected to the edge 7.
  • the first groove 9 in the example illustrated in FIG. 5 is connected to the edge portion 7.
  • the first groove 9 may have a convex shape protruding toward the corner 3a when viewed from above.
  • the boundary between the edge 7 and the first groove 9 may be a convex shape protruding toward the corner 3a.
  • the edge connected to the edge 7 in the first groove 9 (hereinafter referred to as the “outer edge” for convenience)
  • the edge (hereinafter referred to as “inner edge” for the sake of convenience) located on the opposite side of the edge may be a convex shape protruding toward the corner 3a.
  • the protruding portion 8 is positioned closer to the cutting edge. Therefore, the chip curling action by the protrusion 8 is improved.
  • the bottom 93 of the first groove 9 may be located on the bisector M.
  • the generated chips easily come into contact with the bottom portion 93 of the first groove 9, and thus the curl diameter of the chips tends to be small. Thereby, favorable chip discharge
  • emission property can be exhibited over the cutting conditions with a large feed amount from the cutting conditions with a small feed amount.
  • the bottom part 93 may exist only in one place in the 1st groove
  • the bottom portion 93 may extend linearly or may extend in a planar shape.
  • the bottom portion 93 means, for example, as shown in FIG. 7, a portion of the first groove 9 that is located at the lowest position. For example, even when the bottom portion 93 of the first groove 9 is located on the bisector M when viewed from above, the depth of the first groove 9 becomes shallower as the distance from the bisector M increases. Good. In other words, the depth of the first groove 9 may be deepest on the bisector M and shallowest at both ends.
  • the first groove 9 may have a concave curved surface shape.
  • channel 9 is said structure, since the bottom part 93 of the 1st groove
  • the first groove 9 may have a first inclined surface 91 and a second inclined surface 92.
  • the first inclined surface 91 is a surface that is inclined downward as the distance from the ridge 2 increases.
  • the second inclined surface 92 is a surface that is located inward of the first inclined surface 91 and is inclined upward as it is away from the first inclined surface 91.
  • the first angle ⁇ 1 of the first inclined surface 91 may be smaller than the second angle ⁇ 2 of the second inclined surface 92.
  • the first angle ⁇ 1 of the first inclined surface 91 and the second angle ⁇ 2 of the second inclined surface 92 can be defined as follows, for example. That is, the first angle ⁇ 1 of the first inclined surface 91 is, for example, as shown in FIG. 7, in the cross section perpendicular to the ridge 2, the first inclined surface 91 relative to the reference surface perpendicular to the central axis O1 of the insert 1. It can be an inclination angle.
  • the edge portion 7 when the edge portion 7 is a flat surface perpendicular to the central axis O1 of the insert 1, the edge portion 7 may be used as a reference surface.
  • the second angle ⁇ 2 of the second inclined surface 92 can be similarly defined.
  • the first angle ⁇ 1 and the second angle ⁇ 2 may be substantially constant over the entire length of the first groove 9. That is, the first angle ⁇ 1 and the second angle ⁇ 2 may be substantially constant along the ridge 2.
  • substantially constant does not require that the values match completely and does not change at all, and may include some error and may be substantially constant.
  • the generated chips are likely to stably flow into the first groove 9, and there is little possibility that the chips will contact the protruding portion 8 too strongly. Therefore, the effect
  • the first angle ⁇ 1 may be 12 ° to 30 °
  • the second angle ⁇ 2 may be 15 ° to 60 °.
  • the dimension (width) of the first inclined surface 91 in the direction perpendicular to the ridge 2 may be larger than the dimension (width) of the second inclined surface 92 in the direction perpendicular to the ridge 2.
  • the protruding portion 8 may have a first portion 81 and a second portion 82.
  • the first part 81 is a part that is inclined upward as it is away from the first groove 9, and the second part 82 is located inward of the first part 81 and is upward as it is away from the first part 81. It is the part which inclines toward.
  • the protruding portion 8 may have such a two-stage rising shape.
  • the second angle ⁇ 2 of the second inclined surface 92 may be larger than the third angle ⁇ 3 that is the inclination angle of the first portion 81 and the fourth angle ⁇ 4 that is the inclination angle of the second portion 82.
  • the area through which the chips pass is a three-stage rising shape including the protrusion 8 and the first groove 9.
  • the second angle ⁇ 2 of the second inclined surface 92 located closest to the ridge portion 2 is the first portion 81 located inward of the second inclined surface 92.
  • the third angle ⁇ 3 and the fourth angle ⁇ 4 of the second part 82 are larger.
  • the generated chips can make good contact with the second inclined surface 92 of the first groove 9 even under cutting conditions with a small depth of cut and a small amount of feed, a good chip curling action can be obtained. can get.
  • the third angle ⁇ 3 that is the inclination angle of the first part 81 and the fourth angle ⁇ 4 that is the inclination angle of the second part 82 are defined in the same manner as the first angle ⁇ 1 and the second angle ⁇ 2 described above. be able to. That is, as shown in FIG. 7, the third angle ⁇ 3 of the first portion 81 is, for example, in a cross section perpendicular to the ridge portion 2, more specifically, in a cross section passing through the bisector of the corner 3a. The inclination angle of the first part 81 with respect to the surface can be set. The same applies to the fourth angle ⁇ 4 of the second portion 82.
  • the third angle ⁇ 3 of the first part 81 may be smaller than the fourth angle ⁇ 4 of the second part 82.
  • the third angle ⁇ 3 may be 20 ° to 60 °
  • the fourth angle ⁇ 4 may be 40 ° to 70 °.
  • the edge 7 may have a first edge 7a, a second edge 7b, and a third edge 7c.
  • the first edge portion 7 a is a region located along the corner 3 a in the edge portion 7.
  • the second edge portion 7 b is a region located along the first side 3 b 1 in the edge portion 7.
  • the third edge 7 c is a region located along the second side 3 b 2 in the edge 7.
  • the first length D1 in the direction along the bisector M of the first edge 7a is the second maximum value in the direction perpendicular to the first side 3b1 in the second edge 7b.
  • the length D2 may be smaller than the third length D3 that is the maximum value in the direction orthogonal to the second side 3b2 at the third edge 7c.
  • the first groove 9 When the first groove 9 is located as described above, the first groove 9 is located closer to the ridge 2 at the corner 3a than at the first side 3b1 and the second side 3b2. . Therefore, the generated chips are likely to flow stably into the first groove 9 under a cutting condition with a large cut amount and a small feed amount. As a result, it is possible to improve the curling action of the chips under cutting conditions in which the cutting amount is large and the feeding amount is small.
  • the first length D1 to the third length D3 can be defined as follows, for example. That is, as shown in FIG. 5, for example, the first length D1 is the length from the ridge 2 to the first groove 9 in the direction along the bisector M of the corner 3a (that is, the edge) The dimension of the part 7).
  • the second length D2 is the maximum value of the length from the ridge 2 to the first groove 9 in the direction perpendicular to the first side 3b1 (that is, the dimension of the edge 7) in the top view.
  • the third length D3 can be defined similarly to the second length D2.
  • the outer edge of the first groove 9 has a circular arc shape, and the curvature radius R1 of the outer edge may be smaller than the curvature radius R2 of the corner 3a.
  • the width of the first groove 9 in the direction perpendicular to the ridge 2 may be maximum on the bisector M of the corner 3a.
  • vertical to the ridge part 2 may become small as it leaves
  • the width of the first groove 9 is the above-described configuration, chips are likely to flow into the first groove 9 under cutting conditions in which the cut amount is small and the feed amount is large. Therefore, the curling action by the first groove 9 described above is preferably exhibited.
  • the protrusion 8 includes a region corresponding to the corner 3a (first region 8a), a region corresponding to the first side 3b1 (second region 8b), and a region corresponding to the second side 3b2 (third region 8c). You may have.
  • the first region 8a corresponding to the corner 3a faces the corner 3a
  • the second region 8b faces the first side 3b1
  • the third region 8c faces the second side 3b2. .
  • the upper edge of the first region 8a may be a straight line orthogonal to the bisector M of the corner 3a.
  • the upper edge of the second region 8b may be a combination of two straight lines. Of these two straight lines, one straight line located on the side of the corner 3a is parallel to the corner 3a or inclined so as to move away from the first side 3b1 as the distance from the corner 3a increases, and the other straight line is You may incline so that it may approach 1st edge
  • a cutting insert 111 (hereinafter, also simply referred to as the insert 111) according to the second embodiment of the present disclosure will be described with reference to FIGS.
  • description will be made with a focus on the differences from the insert 1 of the first embodiment. Therefore, for the part having the same configuration as that of the first embodiment, the description in the first embodiment is cited and the description is omitted.
  • the insert 111 has a main body portion 11 and a sintered body portion 12 in the same manner as the insert 1 of the first embodiment.
  • the sintered body portion 12 has a ridge portion 2, an upper surface 3, a lower surface 5, a side surface 6, and a through hole 13.
  • the upper surface 3 has an edge portion 7, a protruding portion 8, and a first groove 9.
  • the protruding portion 8 has a first portion 81 and a second portion 82, and the first groove 9 has a first inclined surface 91 and a second inclined surface 92. That is, like the insert 1 of 1st Embodiment, if the protrusion part 8 and the 1st groove
  • the insert 111 is different from the insert 1 of the first embodiment in the specific configuration of the three-stage rising shape.
  • the second angle ⁇ 2 of the second inclined surface 92 is smaller than the first angle ⁇ 3 of the first part 81 and larger than the fourth angle ⁇ 4 of the second part 82. .
  • angular 3a can be exhibited, for example.
  • the first embodiment for example, thin chips generated when a hardened carburized layer portion is processed in carburizing removal processing can be suitably processed.
  • the second embodiment for example, even when the surface of a work material with low hardness is processed in carburization removal processing, good chip dischargeability can be exhibited.
  • the shape of the first groove 9 in the insert 111 may be different from that of the insert 1 of the first embodiment. That is, the first length D1 from the ridge 2 to the first groove 9 in the direction along the bisector M of the corner 3a is from the ridge 2 to the first groove 9 in the direction perpendicular to the first side 3b1. It may be larger than the third length D3 from the ridge 2 to the first groove 9 in the direction perpendicular to the second length D2 and the second side 3b2.
  • the first length D1 to the third length D3 can be defined in the same manner as described above.
  • the outer edge of the first groove 9 may have an arc shape in a top view, and the curvature radius R1 of the outer edge may be larger than the curvature radius R2 of the corner 3a.
  • the width of the first groove 9 in the direction perpendicular to the ridge 2 may be maximum on the bisector M of the corner 3a.
  • vertical to the ridge part 2 may become small as it leaves
  • the difference between the maximum value and the minimum value of the width of the first groove 9 in the direction perpendicular to the ridge 2 is larger than the above-described difference in the first embodiment.
  • channel 9 is the above structures, a chip can be made to contact the 2nd inclined surface 92 stably on cutting conditions with small feed amount. Therefore, the effect of curling the chips stably is increased.
  • the inner edge of the first groove 9 may be a straight line orthogonal to the bisector M of the corner 3a in a top view. That is, in the top view, the outer edge of the first groove 9 may be convex toward the corner 3a, while the inner edge of the first groove 9 may be orthogonal to the bisector M of the corner 3a.
  • generated under the cutting conditions with a large cutting amount and a small feed amount can be made to contact the 1st groove
  • the shape of the protrusion 8 may be different from the insert 1 of the first embodiment.
  • the upper edge of the second region 8b of the protruding portion 8 may be a single straight line that is inclined away from the corresponding first side 3b1 as the distance from the corner 3a increases. In such a case, the distance between the upper edge of the protruding portion 8 and the ridge portion 2 can be ensured behind the first side 3b1, so that chips are not easily clogged under cutting conditions with a large feed amount.
  • a cutting insert 211 (hereinafter also simply referred to as the insert 211) according to the third embodiment of the present disclosure will be described with reference to FIGS.
  • description will be made centering on portions that are different from the insert 1 of the first embodiment and the insert 111 of the second embodiment. Therefore, about the part which has the structure similar to 1st Embodiment and 2nd Embodiment, description in 1st Embodiment and 2nd Embodiment is used and description is abbreviate
  • the insert 211 has the main body part 11 and the sintered body part 12 like the insert 1 of the first embodiment.
  • the sintered body portion 12 has a ridge portion 2, an upper surface 3, a lower surface 5, a side surface 6, and a through hole 13.
  • the upper surface 3 has the edge part 7, the protrusion part 8, and the 1st groove
  • the protrusion 8 in the example shown in FIG. 21 includes a plurality of second grooves 14 extending in a direction inclined with respect to the first side 3b1 in the region along the first side 3b1.
  • the second time during the cutting process using the coolant (coolant) Since the coolant flows in the groove 14, the cooling efficiency is good.
  • the ridge 2 used as a cutting blade can be efficiently cooled.
  • the plurality of second grooves 14 extend in directions inclined with respect to the first side 3b1, the direction in which the chips flow is easily controlled by the second grooves 14.
  • the direction in which the chips flow is further easily controlled.
  • the chips are likely to be twisted. Therefore, it is hard to clog chips.
  • the plurality of second grooves 14 extend in a direction away from the corner 3 a as the distance from the first side 3 b 1 increases, the chip discharging property is higher.
  • the protrusion 8 in the example shown in FIG. 21 has a plurality of grooves in a region along the second side 3b2 as a groove corresponding to the plurality of second grooves 14 located in the region along the first side 3b1.
  • any one of the first side 3b1 and the second side 3b2 is a cutting edge. Even when used as a cooling efficiency.
  • a cutting insert 311 (hereinafter also simply referred to as an insert 311) according to a fourth embodiment of the present disclosure will be described with reference to FIGS.
  • description will be made with a focus on differences from the insert 1 of the first embodiment to the insert 211 of the third embodiment. Therefore, the description of the first embodiment to the third embodiment is applied to the portion having the same configuration as that of the first embodiment to the third embodiment, and the description is omitted.
  • the insert 311 has a main body portion 11 and a sintered body portion 12 in the same manner as the insert 1 of the first embodiment.
  • the sintered body portion 12 has a ridge portion 2, an upper surface 3, a lower surface 5, a side surface 6, and a through hole 13.
  • the upper surface 3 has an edge portion 7, a protruding portion 8, and a first groove 9.
  • the insert 311 has the 2nd groove
  • the first groove 9 in the example shown in FIG. 24 has a plurality of third grooves 15 extending in a direction inclined with respect to the first side 3b1 in the region along the first side 3b1. have.
  • channel 9 has the some 3rd groove
  • at the time of the cutting process using a coolant (coolant) Since the coolant flows through the three grooves 15, the cooling efficiency is good.
  • the ridge 2 used as a cutting blade can be efficiently cooled.
  • the plurality of third grooves 15 extend in the direction inclined with respect to the first side 3b1, the direction in which the chips flow is easily controlled by the third grooves 15.
  • the direction in which the chips flow is further easily controlled.
  • the plurality of third grooves 15 extend in directions inclined with respect to the first side 3b1, the chips are likely to be twisted. Therefore, it is hard to clog chips.
  • the plurality of third grooves 15 extend in the direction away from the corner 3a as they are away from the first side 3b1, the chip discharging property is higher.
  • channel 9 in an example shown in FIG. 24 is also a some groove
  • the first groove 9 has a plurality of grooves in each of the regions along the first side 3b1 and the second side 3b2, any one of the first side 3b1 and the second side 3b2 is cut. Even when used as a blade, the cooling efficiency is high.
  • the cutting tool 101 of the embodiment includes a holder 105 having an insert pocket 103 (hereinafter also simply referred to as a pocket 103) on the first end side, and an insert 1 mounted in the pocket 103.
  • the insert 1 may be mounted in the pocket 103 so that at least the cutting edge protrudes from the first end of the holder 105, in other words, the cutting edge protrudes outward from the holder 105.
  • the holder 105 in the embodiment may have a rod shape that is elongated from the first end toward the second end.
  • One pocket 103 is provided on the first end side of the holder 105 in the example shown in FIG.
  • the pocket 103 is a portion to which the insert 1 is mounted, and may be open to the end surface of the holder 105 on the first end side.
  • the insert 1 may be fixed to the insert pocket by a clamp member 107, for example. That is, the fixing screw 109 is inserted into the through hole of the clamp member 107 in a state where the tip end portion of the clamp member 107 is inserted into the through hole of the insert 1.
  • the distal end portion of the clamp member 107 presses the insert 1 against the holder 103 by inserting the distal end of the fixing screw 109 into a screw hole (not shown) formed in the holder 103 and screwing the screw portions together. . Thereby, the insert 1 is attached to the holder 103.
  • the method of fixing the insert 1 to the holder 103 is not limited to the method using such a clamp structure.
  • other methods such as fixing with screws without using the clamp member 107 may be adopted.
  • the material of the holder 105, the clamp member 107, and the fixing screw 109 for example, steel, cast iron or the like can be used. Among these materials, steel has high toughness.
  • the cut workpiece is produced by cutting the work material 201.
  • outer diameter processing is exemplified as the cutting processing.
  • the cutting process include an inner diameter process, a grooving process, and an end face process in addition to the outer diameter process.
  • the method for manufacturing a cut product according to the embodiment includes the following steps (1) to (3). (1) A step of rotating the work material 201. (2) A step of bringing at least the cutting edge of the cutting tool 101 typified by the above embodiment into contact with the rotating work material 201. (3) A step of separating the cutting tool 101 from the work material 201.
  • the work material 201 is rotated around the axis X in the X1 direction. Further, the cutting tool 101 is moved closer to the workpiece 201 by moving the cutting tool 101 in the X2 direction.
  • the work material 201 is cut by bringing the cutting edge of the cutting tool 101 into contact with the work material 201. At this time, the surface of the work material is processed by cutting the work material 201 while moving the cutting tool 101 in the X3 direction. Then, as shown in FIG. 29, the cutting tool 101 is moved away from the work material 201 by moving the cutting tool 101 in the X4 direction.
  • the cutting tool 101 is brought close to the work material 201 while the axis X is fixed and the work material 201 is rotated.
  • the work material 201 is cut by bringing the cutting blade of the insert 1 into contact with the rotating work material 201.
  • the cutting tool 101 is moved away while the work material 201 is rotated.
  • the cutting tool 101 is brought into contact with the work material 201 by moving the cutting tool 101 in each step, or the cutting tool 101 is moved from the work material 201 in each step.
  • the embodiment is not limited to such a form.
  • the work material 201 may be brought close to the cutting tool 101 in the step (1). Similarly, in the step (3), the work material 201 may be moved away from the cutting tool 101. In the case of continuing the cutting process, the state in which the workpiece 201 is rotated and the cutting blade of the insert 1 is brought into contact with a different portion of the workpiece 201 may be repeated.
  • examples of the material of the work material 201 include carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous metal.
  • the present disclosure is not limited to the above-described embodiment, and it is needless to say that the embodiment can be arbitrarily set without departing from the gist of the present disclosure.
  • Cutting insert (insert) 2 ... Ridge 21 ... 1st cutting edge 22 ... 2nd cutting edge 3 ... Upper surface 3a ... Corner 3b1 ... 1st side 3b2 ... 2nd side 31 ... Corner region 4 ... main surface 5 ... lower surface 6 ... side surface 7 ... edge 7a ... first edge 7b ... second edge 7c ... third edge 8 ⁇ .... Projection 8a ... 1st field 8b ... 2nd field 8c ... 3rd field 81 ... 1st part 82 ... 2nd part 9 ... 1st groove 91 ... 1st inclined surface 92 ... 2nd inclined surface 93 ... bottom part 11 ... 1st member (main-body part) 12 ...

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

La présente invention concerne une plaquette de coupe dotée d'un premier élément et d'un second élément joint au premier élément. Le second élément comprend : une surface supérieure comprenant un premier bord, un second bord et une partie de coin ; une surface latérale adjacente à la surface supérieure ; et une partie de crête positionnée au niveau de l'intersection de la surface supérieure et de la surface latérale. La surface supérieure comprend une partie de bord, une partie en saillie qui est positionnée davantage vers l'intérieur que la partie de bord et qui fait saillie vers le haut, et une première rainure positionnée entre la partie de bord et la partie en saillie. Dans une vue de dessus, une première largeur (W1) de la première rainure dans une direction perpendiculaire à une bissectrice du coin est inférieure à une seconde largeur (W2) de la partie en saillie dans la direction perpendiculaire à la bissectrice.
PCT/JP2018/006775 2017-02-28 2018-02-23 Plaquette de coupe, outil de coupe et procédé de fabrication de pièce coupée WO2018159499A1 (fr)

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EP4049774A1 (fr) * 2021-02-26 2022-08-31 Tungaloy Corporation Insert de découpe
WO2023084973A1 (fr) * 2021-11-09 2023-05-19 京セラ株式会社 Plaquette de coupe, outil de coupe, et procédé de fabrication de pièce coupée
EP4342607A1 (fr) * 2022-09-26 2024-03-27 Tungaloy Corporation Insert de coupe

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EP3006142B1 (fr) 2013-05-28 2021-10-27 Kyocera Corporation Plaquette de coupe et outil de coupe, ainsi que procédé permettant de produire des pièces coupées à l'aide d'un outil de coupe
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JP6462126B2 (ja) 2015-06-23 2019-01-30 京セラ株式会社 切削インサート、切削工具及びこれを用いた切削加工物の製造方法

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JPH0362708U (fr) * 1989-10-23 1991-06-19
JPH10128604A (ja) * 1996-10-31 1998-05-19 Kyocera Corp 切削インサート
JPH1110412A (ja) * 1997-06-25 1999-01-19 Kyocera Corp 切削インサート
JP2005288613A (ja) * 2004-03-31 2005-10-20 Mitsubishi Materials Corp スローアウェイチップ
JP2006110666A (ja) * 2004-10-14 2006-04-27 Mitsubishi Materials Corp 切削インサート
WO2011122242A1 (fr) * 2010-03-29 2011-10-06 住友電工ハ－ドメタル株式会社 Plaquette de coupe
WO2016035490A1 (fr) * 2014-09-05 2016-03-10 住友電工ハードメタル株式会社 Pointe jetable
WO2016136949A1 (fr) * 2015-02-26 2016-09-01 京セラ株式会社 Pièce rapportée, foret, et procédé de fabrication de pièce coupée l'utilisant

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EP4049774A1 (fr) * 2021-02-26 2022-08-31 Tungaloy Corporation Insert de découpe
US11772166B2 (en) 2021-02-26 2023-10-03 Tungaloy Corporation Cutting insert
WO2023084973A1 (fr) * 2021-11-09 2023-05-19 京セラ株式会社 Plaquette de coupe, outil de coupe, et procédé de fabrication de pièce coupée
EP4342607A1 (fr) * 2022-09-26 2024-03-27 Tungaloy Corporation Insert de coupe

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