JPWO2020194288A5 - - Google Patents

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JPWO2020194288A5
JPWO2020194288A5 JP2021545705A JP2021545705A JPWO2020194288A5 JP WO2020194288 A5 JPWO2020194288 A5 JP WO2020194288A5 JP 2021545705 A JP2021545705 A JP 2021545705A JP 2021545705 A JP2021545705 A JP 2021545705A JP WO2020194288 A5 JPWO2020194288 A5 JP WO2020194288A5
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edge
insert
cutting
minor
cutting insert
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JP2022524575A (en
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Priority claimed from US16/366,088 external-priority patent/US11027342B2/en
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切削インサート（２０）であって、前記切削インサート（２０）は、
外周側面（２４）によって相互接続される２つの対向する端面（２２ａ、２２ｂ）と、前記対向する端面（２２ａ、２２ｂ）を通過する第１のインサート軸（Ａ１）と、を備え、
各前記端面（２２ａ、２２ｂ）は、中心凹面（５８）を有し、
前記外周側面（２４）は、２つの対向する主側面（２６ａ、２６ｂ）と２つの副側面（２８ａ、２８ｂ）とを有し、
主縁部（３０）は、各前記主側面（２６ａ、２６ｂ）と各前記端面（２２ａ、２２ｂ）との交線に形成され、
主切れ刃（３４）は、各前記主縁部（３０）の少なくとも一部分に沿って形成され、
副縁部（３２）は、各前記副側面（２８ａ、２８ｂ）と各前記端面（２２ａ、２２ｂ）との交線に形成され、
副切れ刃（３６）は、各前記副縁部（３２）の少なくとも一部分に沿って形成され、
中央平面（Ｍ）は、前記第１のインサート軸（Ａ１）に直交し、前記外周側面（２４）に交差し、インサート境界線（ＢＬ）を形成し、
各前記端面（２２ａ、２２ｂ）は、前記中央平面（Ｍ）に対し、２つの対角対向隆起コーナ（ＲＣ）と、２つの対角対向沈下コーナ（ＬＣ）と、を有し、
各前記隆起コーナ（ＲＣ）は、凸状に湾曲する隆起コーナ縁部（４６）を有し、
前記隆起コーナ縁部（４６）は、前記外周側面（２４）と、付随する端面（２２ａ、２２ｂ）と、の交線に形成され、
各前記隆起コーナ縁部（４６）は、第１の主点（ＮＪ１）で前記主縁部（３０）の１つに隣接し、
隆起コーナ切れ刃（５０）は、各前記隆起コーナ縁部（４６）の少なくとも一部分に沿って形成され、
各前記沈下コーナ（ＬＣ）は、凸状に湾曲する沈下コーナ縁部（４８）を有し、
前記沈下コーナ縁部（４８）は、前記外周側面（２４）と、付随する端面（２２ａ、２２ｂ）と、の交線に形成され、
各前記沈下コーナ縁部（４８）は、第３の主点（ＮＪ３）で前記主縁部（３０）の１つに隣接し、
沈下コーナ切れ刃（５２）は、各前記沈下コーナ縁部（４８）の少なくとも一部分に沿って形成され、
前記切削インサート（２０）の主側面図において、
各前記主縁部（３０）の前記第１の主点（ＮＪ１）及び前記第３の主点（ＮＪ３）は、前記中央平面（Ｍ）に平行に測定される主辺長（ＳＬ）を画定し、
前記主辺長（ＳＬ）は、等しい第１の長さ部分（Ｌ１）、第２の長さ部分（Ｌ２）及び第３の長さ部分（Ｌ３）に分割され、
前記第１の長さ部分（Ｌ１）は、前記第１の主点（ＮＪ１）によって境界を定められ、
前記第３の長さ部分（Ｌ３）は、前記第３の主点（ＮＪ３）によって境界を定められ、
各前記主縁部（３０）は、付随する第１の仮想直線（ＬＭ１）を有し、
前記第１の仮想直線（ＬＭ１）は、第１の主点（ＮＪ１）及び第３の主点（ＮＪ３）と隆起縁部分（６２）とを含み、
前記隆起縁部分（６２）は、前記第１の仮想直線（ＬＭ１）の一方の側に位置し、
前記インサート境界線（ＢＬ）は、前記第１の仮想直線（ＬＭ１）のもう一方の側に位置し、
各前記隆起縁部分（６２）は、第２の主点（ＮＪ２）を有し、
前記第２の主点（ＮＪ２）は、（ｉ）付随する前記第１の仮想直線（ＬＭ１）から最も遠く、（ｉｉ）付随する前記主辺長（ＳＬ）の前記第３の長さ部分（Ｌ３）内に位置する、切削インサート（２０）。 A cutting insert (20), said cutting insert (20) comprising:
comprising two opposing end faces (22a, 22b) interconnected by a peripheral side face (24) and a first insert axis (A1) passing through said opposing end faces (22a, 22b);
each said end surface (22a, 22b) having a central concave surface (58);
said peripheral side (24) has two opposing major sides (26a, 26b) and two minor sides (28a, 28b);
a main edge (30) is formed at the intersection of each of said main side surfaces (26a, 26b) and each of said end surfaces (22a, 22b);
a major cutting edge (34) is formed along at least a portion of each said major edge (30);
a minor edge (32) is formed at the intersection of each of said minor side surfaces (28a, 28b) and each of said end surfaces (22a, 22b);
a minor cutting edge (36) is formed along at least a portion of each said minor edge (32);
a central plane (M) is perpendicular to said first insert axis (A1) and intersects said peripheral side surface (24) to form an insert boundary line (BL);
each said end face (22a, 22b) having two diagonally opposed raised corners (RC) and two diagonally opposed sunken corners (LC) with respect to said midplane (M);
each said raised corner (RC) having a convexly curved raised corner edge (46);
said raised corner edge (46) is formed at the intersection of said peripheral side surface (24) and associated end surfaces (22a, 22b);
each said raised corner edge (46) adjoins one of said major edges (30) at a first principal point (NJ1);
a raised corner cutting edge (50) is formed along at least a portion of each said raised corner edge (46);
each sunken corner (LC) having a convexly curved sunken corner edge (48);
the sunken corner edge (48) is formed at the intersection of the outer peripheral side surface (24) and the associated end surfaces (22a, 22b);
each said sunken corner edge (48) adjoins one of said major edges (30) at a third principal point (NJ3);
a sunken corner cutting edge (52) is formed along at least a portion of each said sunken corner edge (48);
In a main side view of said cutting insert (20),
The first principal point (NJ1) and the third principal point (NJ3) of each major edge (30) define a major side length (SL) measured parallel to the midplane (M). death,
said major side length (SL) is divided into equal first length portions (L1), second length portions (L2) and third length portions (L3);
said first length portion (L1) is bounded by said first principal point (NJ1);
said third length portion (L3) is bounded by said third principal point (NJ3);
each said main edge (30) having an associated first imaginary straight line (LM1);
said first imaginary straight line (LM1) includes a first principal point (NJ1) and a third principal point (NJ3) and a raised edge portion (62);
said raised edge portion (62) is located on one side of said first imaginary straight line (LM1);
the insert boundary line (BL) is located on the other side of the first imaginary straight line (LM1);
each said raised edge portion (62) having a second principal point (NJ2);
Said second principal point (NJ2) is (i) furthest from said first imaginary straight line (LM1) associated therewith, and (ii) said third length portion of said associated principal side length (SL) ( L3), the cutting insert (20). 前記切削インサート（２０）の主側面図において、
各前記主縁部（３０）は、付随する第２の仮想直線（ＬＭ２）を有し、
前記第２の仮想直線（ＬＭ２）は、前記第１の主点（ＮＪ１）及び前記第２の主点（ＮＪ２）を含み、突出交点（ＮＩ）で前記副切れ刃（３６）の１つに交差し、
各前記突出交点（ＮＩ）は、隣接する前記第３の主点（ＮＪ３）よりも、前記中央平面（Ｍ）から遠くに位置する、請求項１に記載の切削インサート（２０）。 In a main side view of said cutting insert (20),
each said main edge (30) having an associated second imaginary straight line (LM2);
Said second imaginary straight line (LM2) includes said first principal point (NJ1) and said second principal point (NJ2), and extends to one of said minor cutting edges (36) at a projecting intersection point (NI). crossed,
The cutting insert (20) according to claim 1, wherein each said projecting intersection point (NI) is located farther from said median plane (M) than the adjacent said third principal point (NJ3). 各前記端面（２２ａ、２２ｂ）は、付随する前記副切れ刃（３６）のそれぞれに直に隣接する副ランド面（４０）を含み、
前記２つの副側面（２６ａ、２６ｂ）の間に位置し、前記突出交点（ＮＩ）の１つを含む第２の平面（Ｐ２）で取った断面において、前記隣接する副ランド面（４０）は、隣接する副側面（２８ａ、２８ｂ）と共に内側副切削角度（α１）を形成し、
前記副切削角度（α１）は、少なくとも６５度、多くとも１１５度である、請求項１又は２に記載の切削インサート（２０）。 each said end face (22a, 22b) includes a minor land surface (40) immediately adjacent each of said associated minor cutting edges (36);
In a cross-section taken in a second plane (P2) located between said two minor side surfaces (26a, 26b) and containing one of said protruding intersections (NI), said adjacent minor land surface (40) is , forms an inner minor cutting angle (α1) with the adjacent minor flanks (28a, 28b),
Cutting insert (20) according to claim 1 or 2, wherein the minor cutting angle (α1) is at least 65 degrees and at most 115 degrees. 各前記突出交点（ＮＩ）は、前記中央平面（Ｍ）から第１の高さ（Ｈ１）で位置し、
各前記第３の主点（ＮＪ３）は、前記中央平面（Ｍ）から第２の高さ（Ｈ２）で位置し、
前記第１の高さ（Ｈ１）は、前記第２の高さ（Ｈ２）の少なくとも１２０パーセントである、請求項２又は３に記載の切削インサート（２０）。 each said projecting intersection point (NI) is located at a first height (H1) from said median plane (M);
each said third principal point (NJ3) is located at a second height (H2) from said mid-plane (M);
The cutting insert (20) according to claim 2 or 3, wherein said first height (H1) is at least 120 percent of said second height (H2). 前記第１の高さ（Ｈ１）は、前記第２の高さ（Ｈ２）の２２０パーセント以下である、請求項４に記載の切削インサート（２０）。 5. The cutting insert (20) of claim 4, wherein said first height (H1) is less than or equal to 220 percent of said second height (H2). 前記２つの主側面（２６ａ、２６ｂ）の間に位置し、前記副切れ刃（３６）の１つに交差するいずれかの平面で取った断面において、前記隣接する副ランド面（４０）は、前記隣接する副側面（２８ａ、２８ｂ）と共に内側副切削角度（α１）を形成し、
前記副切削角度（α１）は、少なくとも６５度、多くとも１１５度である、請求項１～５の何れか一項に記載の切削インサート（２０）。 In a cross-section taken in any plane located between the two major side surfaces (26a, 26b) and intersecting one of the minor cutting edges (36), the adjacent minor land surface (40) is: forming an inner minor cutting angle (α1) with the adjacent minor side surfaces (28a, 28b);
The cutting insert (20) according to any one of the preceding claims, wherein said minor cutting angle (α1) is at least 65 degrees and at most 115 degrees. 前記切削インサート（２０）の端面図において、各前記副縁部（３２）は、前記インサート境界線（ＢＬ）と一致するか、又は、前記インサート境界線（ＢＬ）の外側に位置する、請求項１～６の何れか一項に記載の切削インサート（２０）。 4. The claim wherein, in an end view of said cutting insert (20), each said minor edge (32) coincides with said insert boundary line (BL) or lies outside said insert boundary line (BL). A cutting insert (20) according to any one of claims 1-6. 前記各副切れ刃（３６）は、付随する前記副縁部（３２）の全長を延在させる、請求項１～７の何れか一項に記載の切削インサート（２０）。 The cutting insert (20) according to any one of the preceding claims, wherein each minor cutting edge (36) extends the entire length of the associated minor edge (32). 前記外周側面（２４）は、４つの凸状湾曲コーナ面（４２）を含み、
前記凸状湾曲コーナ面（４２）は、前記２つの主側面（２６ａ、２６ｂ）及び前記２つの副側面（２８ａ、２８ｂ）と交互である、請求項１～８の何れか一項に記載の切削インサート（２０）。 said peripheral side surface (24) includes four convexly curved corner surfaces (42);
9. The method of any one of claims 1 to 8, wherein the convexly curved corner surfaces (42) alternate with the two major side surfaces (26a, 26b) and the two minor side surfaces (28a, 28b). A cutting insert (20). 前記中央平面（Ｍ）で取られ、前記４つのコーナ面（４２）に交差する断面において、
前記４つのコーナ面（４２）は、４つのコーナ点（ＮＣ）で前記２つの副側面（２８ａ、２８ｂ）に隣接し、
前記４つのコーナ点（ＮＣ）は、第１の対の仮想平行辺（Ｓ１）及び第２の対の仮想平行辺（Ｓ２）を有する仮想平行四辺形（ＰＬ）を画定し、
前記第１の対の仮想平行辺（Ｓ１）は、各前記主縁部（３０）の主辺長（ＳＬ）に直交する、請求項９に記載の切削インサート（２０）。 In a cross-section taken in said mid-plane (M) and intersecting said four corner faces (42),
said four corner surfaces (42) adjoin said two minor side surfaces (28a, 28b) at four corner points (NC);
said four corner points (NC) define a virtual parallelogram (PL) having a first pair of virtual parallel sides (S1) and a second pair of virtual parallel sides (S2);
10. The cutting insert (20) according to claim 9, wherein said first pair of imaginary parallel sides (Sl) are orthogonal to the major side length (SL) of each said major edge (30). 前記切削インサート（２０）の副側面図において、各前記副切れ刃（３６）は、
付随する前記隆起コーナ縁部（３０）に隣接するワイピング縁部分（６６）と、
付随する沈下コーナ縁部（３４）に隣接するランピング縁部分（６８）と、
前記ワイピング縁部分（６６）と前記ランピング縁部分（６８）との間に延在する凸形状接合縁部分（７０）と、
を含む、請求項１～１０の何れか一項に記載の切削インサート（２０）。 In a secondary side view of said cutting insert (20), each of said secondary cutting edges (36):
a wiping edge portion (66) adjacent said associated raised corner edge (30);
a ramping edge portion (68) adjacent the associated sunken corner edge (34);
a convex joining edge portion (70) extending between said wiping edge portion (66) and said ramping edge portion (68);
The cutting insert (20) according to any one of the preceding claims, comprising a 前記切削インサート（２０）の副側面図において、各前記ランピング縁部分（６８）は、
付随する前記沈下コーナ縁部（４８）に隣接する第１のランピング縁部小部分（６８ａ）と、
付随する前記接合縁部分（７０）に隣接する第３のランピング副部分（６８ｃ）と、
前記第１のランピング縁部小部分（６８ａ）と前記第３のランピング縁部小部分（６８ｃ）との間に延在する第２の凹形状ランピング縁部小部分（６８ｂ）と、
を含む、請求項１１に記載の切削インサート（２０）。 In a secondary side view of said cutting insert (20), each said ramping edge portion (68):
a first ramping edge subsection (68a) adjacent to the associated sunken corner edge (48);
a third ramping sub-portion (68c) adjacent said associated joining edge portion (70);
a second concave ramping edge subportion (68b) extending between said first ramping edge subportion (68a) and said third ramping edge subportion (68c);
A cutting insert (20) according to claim 11, comprising: 各前記端面（２２ａ、２２ｂ）は、各前記第１のランピング縁部小部分（６８ａ）に隣接する副ランプ面（７２）を含み、
前記２つの主側面（２６ａ、２６ｂ）の間に位置し、前記第１のランピング縁部小部分（６８ａ）の１つに交差する第５の平面（Ｐ５）で取った断面において、前記隣接する副ランプ面（７２）は、前記中央平面（Ｍ）から離れて傾斜する一方で、前記第１のランピング縁部小部分（６８ａ）の１つから離れて延在する、請求項１２に記載の切削インサート（２０）。 each said end surface (22a, 22b) includes a secondary ramp surface (72) adjacent each said first ramping edge subsection (68a);
In a cross-section taken in a fifth plane (P5) located between said two major sides (26a, 26b) and intersecting one of said first ramping edge subportions (68a), said adjacent 13. A secondary ramp surface (72) according to claim 12, wherein a secondary ramp surface (72) slopes away from said central plane (M) while extending away from one of said first ramping edge sub-portions (68a). A cutting insert (20). 前記２つの主側面（２６ａ、２６ｂ）の間に位置し、前記第１のランピング縁部小部分（６８ａ）の１つに交差するいずれかの平面で取った断面において、前記隣接する副ランプ面（７２）は、前記中央平面（Ｍ）から離れて傾斜する一方で、前記第１のランピング縁部小部分（６８ａ）の１つから離れて延在する、請求項１３に記載の切削インサート（２０）。 said adjacent minor ramp surface in a cross-section taken in any plane located between said two major side surfaces (26a, 26b) and intersecting one of said first ramping edge subportions (68a); 14. The cutting insert of claim 13, wherein (72) extends away from one of said first ramping edge subportions (68a) while sloping away from said mid-plane (M). 20). 前記切削インサート（２０）は、前記第１のインサート軸（Ａ１）回りに回転対称を呈する、請求項１～１４の何れか一項に記載の切削インサート（２０）。 The cutting insert (20) according to any one of the preceding claims, wherein the cutting insert (20) exhibits rotational symmetry about the first insert axis (A1). 第２のインサート軸（Ａ２）は、前記２つの主側面（２６ａ、２６ｂ）を通過し、
インサート貫通穴（４４）は、前記第２のインサート軸（Ａ２）に沿って延在し、前記２つの主側面（２６ａ、２６ｂ）に交差する、請求項１～１５の何れか一項に記載の切削インサート（２０）。 a second insert axis (A2) passes through said two main sides (26a, 26b),
The insert through-hole (44) according to any one of the preceding claims, wherein the insert through-hole (44) extends along the second insert axis (A2) and intersects the two main side surfaces (26a, 26b). cutting insert (20). 前記切削インサート（２０）は、前記第２のインサート軸（Ａ２）回りに回転対称を呈する、請求項１６に記載の切削インサート（２０）。 17. The cutting insert (20) according to claim 16, wherein the cutting insert (20) exhibits rotational symmetry about the second insert axis (A2). 各前記隆起縁部分（６２）は、付随する前記主縁部（３０）の第３の主点（ＮＪ３）まで延在しない、請求項１～１７の何れか一項に記載の切削インサート（２０）。 The cutting insert (20) according to any one of the preceding claims, wherein each said raised edge portion (62) does not extend to a third principal point (NJ3) of said associated main edge (30). ). 各沈下コーナ縁部（４８）は、それに付随する中心凹面（５８）よりも、完全に前記中央平面（Ｍ）の近くに位置する、請求項１～１８の何れか一項に記載の切削インサート（２０）。Cutting insert according to any one of the preceding claims, wherein each sunken corner edge (48) lies completely closer to said central plane (M) than to its associated central concave surface (58). (20). 各隆起コーナ縁部（４６）は、それに付随する中心凹面（５８）よりも、完全に前記中央平面（Ｍ）の近くに位置する、請求項１～１９の何れか一項に記載の切削インサート（２０）。Cutting insert according to any one of the preceding claims, wherein each raised corner edge (46) lies completely closer to said central plane (M) than to its associated central concave surface (58). (20). 各中心凹面（５８）は、平坦であり、前記中央平面（Ｍ）に平行である、請求項１～２０の何れか一項に記載の切削インサート（２０）。The cutting insert (20) according to any one of the preceding claims, wherein each central concave surface (58) is flat and parallel to said central plane (M). 回転方向（ＲＴ）で工具軸（ＡＴ）回りに回転可能な回転切削工具（８２）であって、
少なくとも１つのインサート受入れポケット（８６）を有する切削本体（８４）と、
前記インサート受入れポケット（８６）内に取り外し可能に固着される請求項１～２１の何れか一項に記載の少なくとも１つの切削インサート（２０）と、
を備える、回転切削工具（８２）。 A rotary cutting tool (82) rotatable about a tool axis (AT) in a direction of rotation (RT), comprising:
a cutting body (84) having at least one insert receiving pocket (86);
at least one cutting insert ( 20 ) according to any one of the preceding claims removably secured within said insert receiving pocket (86);
A rotary cutting tool (82) comprising: 前記工具軸（ＡＴ）は、前方向（ＤＦ）－後方向（ＤＲ）を画定し、
各前記インサート受入れポケット（８６）は、前記切削本体（８４）の前方端面（８８）で開口し、
前記各副切れ刃（３６）は、付随する前記副縁部（３２）の全長を延在させ、
各前記切削インサート（２０）の全有効副切れ刃（３６）は、前記前方端面（８８）の軸方向前方に位置する、請求項２２に記載の回転切削工具（８２）。 the tool axis (AT) defines a forward direction (DF) - a rearward direction (DR);
each said insert receiving pocket (86) opens at a forward end face (88) of said cutting body (84);
each said minor cutting edge (36) extending the full length of the associated said minor edge (32);
23. The rotary cutting tool ( 82 ) of claim 22, wherein all effective minor cutting edges (36) of each said cutting insert (20) are located axially forward of said forward end face (88). 各前記切削インサート（２０）の有効主切れ刃（３４）は、前記工具軸（ＡＴ）に対して正の軸方向すくい角（δ１）を形成する、請求項２２又は２３に記載の回転切削工具（８２）。 A rotary cutting tool according to claim 22 or 23 , wherein the effective main cutting edge (34) of each said cutting insert (20) forms a positive axial rake angle (δ1) with respect to said tool axis (AT). (82). 前記インサート受入れポケット（８６）は、
前記回転方向（ＲＴ）で面する座面（９２）と、
前記座面（９２）に横断する径方向外向き第１のポケット壁（９４）と、
前記座面（９２）に横断する軸方向前向き第２のポケット壁（９６）と、を有し、
前記２つの端面（２２ａ、２２ｂ）の１つは、前記座面（９２）と接触し、
前記２つの主側面（２６ａ、２６ｂ）の１つは、前記第１のポケット壁（９４）と接触し、
前記２つの副側面（２８ａ、２８ｂ）の１つは、前記第２のポケット壁（９６）と接触する、請求項２２～２４の何れか一項に記載の回転切削工具（８２）。 Said insert receiving pocket (86) comprises:
a bearing surface (92) facing in said direction of rotation (RT);
a radially outward facing first pocket wall (94) transverse to said seating surface (92);
an axially forward second pocket wall (96) transverse to said seating surface (92);
one of the two end surfaces (22a, 22b) is in contact with the bearing surface (92);
one of said two major sides (26a, 26b) is in contact with said first pocket wall (94);
A rotary cutting tool (82) according to any one of claims 22 to 24 , wherein one of said two minor side surfaces (28a, 28b) contacts said second pocket wall (96). 前記座面（９２）は、穴軸（ＡＢ）に沿って延在するねじ穴（９８）を含み、
第２のインサート軸（Ａ２）に沿って延在するインサート貫通穴（４４）は、前記インサートの２つの主側面（２６ａ、２６ｂ）に交差し、
締付けねじ（１００）は、前記貫通穴（４４）を通過し、前記ねじ穴（９８）を螺合する、請求項２５に記載の回転切削工具（８２）。 said bearing surface (92) includes a threaded hole (98) extending along a hole axis (AB);
an insert through hole (44) extending along the second insert axis (A2) intersects two major sides (26a, 26b) of said insert,
26. The rotary cutting tool (82) of claim 25 , wherein a clamping screw (100) passes through said through hole (44) and threads into said threaded hole (98).
JP2021545705A 2019-03-27 2020-02-27 Double-sided cutting inserts with diagonally opposed uplift corners and diagonally opposed subsidence corners, and rotary cutting tools Pending JP2022524575A (en)

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