• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    indexable cutting insert, and cutting tool the cutting tool (20) comprises a tool holder (22) having a main body (24) with an insert receiving cavity (26) formed at a front end (28) thereof, and a single-sided indexable square cutting insert (30) removably attached to the insert receiving cavity (26); the insert receiving cavity (26) comprising: a seat surface (60) having a bottom surface (62) with a single engaging groove (64) recessed therein and two separate support blocks (66) protruding from the same; the engagement groove (64) including a pair of parallel flank flank surfaces (68) forming a v-shaped cross section, and each of the support blocks (66) having a raised support surface (70 ), in which the two support surfaces (70) are coplanar, and the cutting insert (30) comprising: opposing square top and bottom surfaces (32, 34) and a peripheral lateral surface (36) extending between the same, the peripheral side surface (36) having four corner surfaces (40) alternating with four relief surfaces (42); a central geometric axis (a1) passing through the upper and lower surfaces (32, 34), around which the central geometric axis of the cutting insert (30) is indexable; and a corner cutting edge (44) formed at the intersection of the upper surface (32) with each of the four corner surfaces (40), the lower surface (34) including a base surface (46) and having exactly four ridges hitch (50) includes a pair of ridge flank surfaces that extend parallel (54) forming a v-shaped cross section, and each hitch ridge (50) intersects one of the four corner surfaces (40) and extends from it in the direction of the central geometric axis (a1), where the lower lower surface (34) of the cutting insert (30) is fixed against the seating surface (60) of the insert receiving cavity (26) only by : the pair of ridge flank surfaces (54) of the coupling ridge (50) located closest to the operating edge cutting edge (44) making contact with the corresponding pair of groove flank surfaces (68) in the single groove coupling (64); and the base surface (46) making contact with the two raised support surfaces (70) in two support zones (72) entirely located beyond the cutting edge of the operating corner (44) than the central geometric axis (a1 ).
    公开号:BR112015018165B1
    申请号:R112015018165-1
    申请日:2014-01-28
    公开日:2020-09-01
    发明作者:Gil Hecht；Daniel Hen
    申请人:Iscar Ltd；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to a cutting tool and a square shaped cutting insert for use in metal cutting processes in general, and for turning operations in particular. BACKGROUND OF THE INVENTION
    [002] Within the field of cutting tools used in turning operations, there are many examples of cutting inserts being removably trapped in an insert receiving cavity of a tool holder. In some cases, these cutting tools are configured in such a way that the cooperating surfaces of the cutting insert and the insert receiving cavity are formed with protrusions and recesses. In other cases, these cutting tools are configured so that the cooperating surfaces of the cutting insert and the insert receiving cavity are formed with male and female coupling elements.
    [003] US 7,201,545 describes a cutting tool having a carrier, shim and indexable cutting insert. The wedge, having a polygonal shape with substantially parallel upper and lower sides, is mounted in a carrier cavity. In an alternative embodiment of the invention, the cutting insert, having a square base shape, in analogy to the shim, can be mounted against the shim in four indexing positions, where three of the eight protuberances on a lower side of the cutting inserts are in 'active' contact with two support surfaces on the upper side of the shim, while two recesses on the upper side of the shim provide clearance for the other five 'passive' protuberances.
    [004] US 7,387,474 describes a cutting tool having a carrier, with an insert seat, and an indexable cutting insert, with a rhombic base shape, mounted thereon. The insert seat includes two male coupling portions in the form of elongated ridges oriented 90 ° between them, which form a T-shaped configuration. One bottom side of the cutting insert includes two sets of coupling portions of the female type, each set having two elongated grooves oriented at 90 ° to each other. In both indexing positions of the cutting insert, one set is actively engaged with two elongated ridges and another set is inactive.
    [005] An alternative square shaped indexable cutting insert derived from US 7,387,474, having four sets of female-type coupling portions and four indexing positions, is expected to result in unacceptably short elongated grooves and ineffective coupling.
    [006] It is an object of the present invention to provide an improved cutting tool.
    [007] It is also an object of the present invention to provide an improved cutting tool having an indexable cutting insert removably attached to a tool holder with a high level of clamping stability and resistance to transverse cutting forces.
    [008] It is additionally an object of the present invention to provide an improved cutting tool having an indexable cutting insert removably attached to a tool holder in four indexing positions.
    [009] It is additionally an object of the present invention to provide an inherently rigid and precise indexable cutting insert. SUMMARY OF THE INVENTION
    [0010] According to the present invention, a single-sided indexable cutting insert is provided comprising: opposing square top and bottom surfaces and a peripheral side surface extending between them, the peripheral side surface having four surfaces of machine alternating with four relief surfaces; a central geometric axis that passes through the upper and lower surfaces, on which the central geometric axis of the cutting insert is indexable; and a corner cutting edge formed at the intersection of the upper surface with each of the four corner surfaces, the lower surface comprising: a base surface; and exactly four coupling ridges that protrude from the base surface, each coupling ridge intersects one of the four corner surfaces and extends from it towards the central geometric axis to divide the base surface into at least four sub-surfaces. base surfaces, each engagement ridge including a pair of ridge flank surfaces that extend in parallel forming a V-shaped cross section.
    [0011] Also according to the present invention, a cutting tool is provided comprising: a tool holder having a main body with an insert receiving cavity formed at the front end thereof, and a cutting insert of the type described above, removably attached to the insert receiving cavity.
    [0012] Still according to the present invention, a cutting tool is provided comprising a tool holder having a main body with an insert receiving cavity formed at a front end thereof, and an indexable cutting insert single-sided square removably attached to the insert receiving cavity; the insert receiving cavity comprising: a seat surface having a bottom surface with a single recessed engagement groove in it and two separate support blocks protruding from it; the engagement groove including a pair of groove flank surfaces that extend in parallel forming a V-shaped cross section, and each of the two support blocks having a raised support surface, where the two support surfaces are coplanar , and the cutting insert comprising: the opposing square top and bottom surfaces and a peripheral side surface extending between them, the peripheral side surface having four corner surfaces alternating with four relief surfaces; a central geometric axis passing through the upper and lower surfaces, on which the central geometric axis of the cutting insert is indexable; and a corner cutting edge formed at the intersection of the upper surface with each of the four corner surfaces, the lower surface that includes a base surface and having exactly four engaging ridges protruding from the base surface, where each crest hitch includes a pair of ridge flank surfaces that extend in parallel forming a V-shaped cross section, and each hitch ridge intersects one of the four corner surfaces and extends in the direction of the central geometric axis, where the lower surface of the inserted cutting part is fixed against the seating surface of the insert receiving cavity only by: the pair of flank surfaces of the crest of the coupling ridge located close to the cutting edge of the operating corner making contact with the corresponding pair of flank surfaces of the groove in the single engaging groove; and the base surface making contact with the two raised support surfaces in two support zones entirely located beyond the cutting edge of the operating corner than the central geometric axis. BRIEF DESCRIPTION OF THE DRAWINGS
    [0013] For a better understanding, the invention will now be described, by way of example only, with reference to the accompanying drawings in which the dashed lines represent limit cut lines for partial views of a member and in which: Fig. 1 is a perspective view of a cutting tool according to some embodiments of the present invention; Fig. 2 is an exploded perspective view of the cutting tool shown in fig. 1; Fig. 3 is a bottom view of a cutting insert according to some embodiments of the present invention; Fig. 4 is a side view of the cutting insert shown in fig. 3; Fig. 5 is a top view of a toolholder according to some embodiments of the present invention; Fig. 6 is a cross-sectional view of the tool holder shown in fig. 5, taken along line VI-VI; Fig. 7 is a top view of the cutting tool shown in Fig. With a fixing screw removed; Fig. 8 is a sectional view of the cutting tool shown in Figure 7 taken along line VIII-VIII; Fig. 9 is a sectional view of the cutting tool shown in Figure 7 taken along line IX-IX; and Fig. 10 is a sectional view of the cutting tool shown in FIG. 7 taken along line X-X. DETAILED DESCRIPTION OF THE INVENTION
    [0014] The present invention relates to a cutting tool 20 comprising a tool holder 22, having a main body 24 with an insert receiving cavity 26 formed at a front end 28 thereof, and an indexable cutting insert single side 30 removably attached to the insert receiving cavity 26.
    [0015] In some embodiments of the present invention, as shown in Figs. 1 and 2, the cutting tool 20 can be in the form of a turning tool, having a carrier shank 82 extending beyond the front end 28 of the main body 24.
    [0016] In addition, in some embodiments of the present invention, the tool holder 22 can be manufactured from machined steel, and the cutting insert 30 can preferably be manufactured by pressing in the form and sintering of a cemented carbide, such as tungsten carbide, and can be coated or uncoated.
    [0017] According to the present invention, as shown in Figs. 3 and 4, the cutting insert 30 has opposing square top and bottom surfaces 32, 34 and a peripheral side surface 36 extending between them, the peripheral side surface 36 having four corner surfaces 40 alternating with four side surfaces 42 constituting relief surfaces 42. The four side surfaces 42 are the same length and the adjacent pairs of surfaces on four sides 42 form 90 ° angles to each other.
    [0018] A cutting edge 44 is formed at the intersection of the upper surface 32 with each of the four corner surfaces 40.
    [0019] In some embodiments of the present invention, the four corner surfaces 40 may be identical, and the four corner cutting edges 44 may be identical.
    [0020] In addition, in some embodiments of the present invention, each corner cutting edge 44 may have a substantially constant radius, which subtends at a 90 ° corner angle.
    [0021] Furthermore, in some embodiments of the present invention, the cutting insert 30 can be described as 'positive', with the four relief surfaces 42 angled inwardly away from the upper surface 32.
    [0022] Furthermore, in some embodiments of the present invention, the four relief surfaces 42 can be flat.
    [0023] According to the present invention, as shown in Figs. 3 and 4, the bottom surface 34 includes a base surface 46, a central geometric axis Al passes through the upper and lower surfaces 32, 34, and the cutting insert is indexable 30 on the central geometric axis Al.
    [0024] In some embodiments of the present invention, as shown in Fig. 4, the base surface 46 can define a base plane P1, and the central geometric axis A1 can be perpendicular to the base plane P1.
    [0025] Furthermore, in some embodiments of the present invention, as shown in Fig. 3, the cutting insert 30 may have four times rotational symmetry around the central geometric axis Al.
    [0026] In addition, in some embodiments of the present invention, as shown in Fig. 3, the cutting insert 30 may have mirror symmetry around a vertical insert plane P2 containing the central geometric axis and bisecting Al two diagonally opposite cutting edges 44.
    [0027] According to the present invention, as shown in Figs. 3 and 4, exactly four hitch ridge 50 protrude from the base surface 46, each hitch ridge 50 including a pair of ridge flank surfaces that extend parallel 54 forming a V-shaped cross section.
    [0028] In some embodiments of the present invention, as shown in Fig. 8, alongside ridge flank surfaces 54 of each engagement ridge 50 can form an obtuse engagement angle. The engagement angle c has a preferable range of 90o-150 °.
    [0029] In other embodiments of the present invention (not shown), the two surface components of the pair of flank surfaces of the ridge 54 of each engagement ridge 50 may be outwardly convex.
    [0030] According to the present invention, as shown in Fig. 3, each coupling ridge 50 intersects one of the four corner surfaces 40 and extends from it towards the central geometric axis Al, thereby dividing the base surface 46 on at least four separate base sub-surfaces 56.
    [0031] In some embodiments of the present invention, as shown in Figs. 3 and 4, each pair of flank surfaces of the ridge 54 can intersect their respective corner surface 40, thus providing good support for their associated corner cutting edge 44 when operating.
    [0032] Furthermore, in some embodiments of the present invention, as shown in Figs. 3 and 4, a central protrusion 48 may have a raised protrusion end surface 52, and each engagement ridge 50 may intersect the central protrusion 48, thereby separating the base sub-surfaces 56 from one another so that they do not communicate with each other.
    [0033] It should be noted that the four coupling ridges 50 join with the central projection 48 to form a single structural member, which improves the stiffness of the cutting insert 30 so that the deformations and inaccuracies resulting from the sintering process cutting insert 30 are reduced to a minimum.
    [0034] In some embodiments of the present invention, as shown in Fig. 3, the base surface 46 can have exactly four identical base sub-surfaces 56.
    [0035] In addition, in some embodiments of the present invention, in a bottom view of the cutting insert 30, as shown in Fig. 3, the central projection 48 can have a substantially circular shape.
    [0036] Furthermore, in some embodiments of the present invention, as shown in Fig. 4, the central projection 48 can project at a first distance D1 from the base plane PI and each of the four coupling ridges 50 can be project at a second distance D2 from the base plane Pl, where Dl is equal to D2.
    [0037] It should be understood that the use of the term "V-shaped" throughout the description and the claims, is not limited to a pair of flank surfaces that form a "V" shape and that intersect at a point vertex (when viewed in cross section), but is also responsible for additional surface spacing beyond the pair of flank surfaces.
    [0038] In some embodiments of the present invention, as shown in Figs. 3 and 4, each engagement ridge 50 may include an intermediate surface 58 spaced from its respective pair of ridge flank surfaces 54, and the end surface of the projection 52 the central projection 48 and the two intermediate surfaces 58 may be coplanar and continuous. Thus, the term "V shape" applies to each coupling ridge 50 having such an intermediate surface 58 spaced apart from its respective pair of ridge flank surfaces 54.
    [0039] Furthermore, in some embodiments of the present invention, as shown in Fig. 3, each intermediate surface 58 may have an intermediate width W, where W is greater than half of D2 and less than D2, that is, 0.5D2 <W <D2.
    [0040] It should be appreciated that the intermediate width W being greater than half of the second distance D2 provides each coupling ridge 50 with an advantageously compact and robust profile.
    [0041] It should also be appreciated that the intermediate width W being smaller than the second distance D2 causes each pair of flank surfaces of the ridge 54 to extend in close to their respective corner surface 40, thus providing good support for its associated cutting edge 44 when operating.
    [0042] According to the present invention, as shown in Figs. 5 and 6, the insert receiving cavity 26 includes a seating surface 60, the seating surface 60 having a bottom surface 62 with a single engaging groove 64 recessed within it and two separate support blocks 66 projecting from the same.
    [0043] The engagement groove 64 includes a pair of parallel flank surfaces of the groove 68 forming a V-shaped cross section, and each of the two support blocks 66 has an elevated support surface 70.
    [0044] As shown in Fig. 8, the V-shaped cross section of the flank surface pair of the groove 68 corresponds with the V-shaped cross section of the flank surface of the ridge 54 of the coupling ridge 50 located nearest of the operating edge cutting edge 44. However, the intermediate surface 58 of the engagement ridge 50 located closest to the operating edge cutting edge 44 does not contact any surface of the engagement groove 64.
    [0045] The two support surfaces 70 are coplanar and entirely located behind the coupling groove 64.
    [0046] It should be noted that the use of the term "rear" and "backward" throughout the description and claims, refers to a direction from the front end of the tool holder 28 towards the main body of the holder tool 24. This orientation is to the right, in figures 5 and 7.
    [0047] It should also be appreciated that the seating surface 60 being configured with the single coupling groove 64 and the two coplanar support surfaces 70, when opposed to an alternative configuration, with more than one coupling groove or crest, allows the insert receiving cavity 26 is manufactured more efficiently.
    [0048] In some embodiments of the present invention, as shown in Fig. 5, a bisector plane of cavity P3 can longitudinally bisect the engagement groove 64, and the seating surface 60 may show mirror symmetry around the bisector plane cavity P3.
    [0049] In addition, in some embodiments of the present invention, as shown in Fig. 5, a pair of flank surfaces of the groove 68 can be located entirely closer to the bisector plane of the cavity P3 which are the two support surfaces 70.
    [0050] According to the present invention, as shown in Figs. 7 to 10, the lower surface 34 of the cutting insert 30 is fixed against the seating surface 60 of the insert receiving cavity 26 solely by: the pair of flank surfaces of the ridge 54 of the coupling ridge 50 located closest to the edge cutting edge 44 making contact with the flank surface pair of groove 68 in the single engagement groove 64; and the base surface 46 making contact with the two raised support surfaces 70 in two support zones 72 entirely located beyond the operating edge cutting edge 44 than the central geometric axis A1.
    [0051] In some embodiments of the present invention, the bottom surface 34 of the cutting insert 30 can be fixed against the seating surface 60 of the insert receiving cavity 26 in one of the four indexing positions.
    [0052] Furthermore, in some embodiments of the present invention, as shown in Fig. 2, the two support zones 72 can be located on two base sub-surfaces 56.
    [0053] In addition, in some embodiments of the present invention, as shown in Figs. 5 and 6, the bottom surface 62 may include a central recess 74 and three clearance slots 38 extending therefrom.
    [0054] As shown in Figs. 9 and 10, the central recess 74 can provide clearance between the central projection 48 and the insert receiving cavity 26, and the three gap slots 38 can provide clearance between the non-operating latches 50 and the receiving cavity of the insert. insert 26.
    [0055] In addition, in some embodiments of the present invention, as shown in Figs. 2 and 10, each of the two support zones 72 of the cutting insert 30 can be delimited by a different one or two relief surfaces 42 located further away from the operating edge cutting edge 44.
    [0056] It should be appreciated that the bottom surface 34 of the cutting insert 30 is effectively fixed against the seating surface 60 of the insert receiving cavity 26 at three corner points of an imaginary triangle, where the central geometric axis Al intersects the imaginary triangle at a substantially central location to define an optimal point through which a clamping force can be applied, to achieve a high level of clamping stability. In some embodiments, the imaginary triangle is an isosceles triangle with raised support surfaces 72 being symmetrically arranged around the bisecting plane of cavity P3 and equidistant from where the flank surfaces of the groove 68 support the flank surfaces of the ridge 54 of the cutting insert 30. In some embodiments, the imaginary triangle can still be an equilateral triangle.
    [0057] In addition, by virtue of the ridge flank surfaces 54 associated with the four hitch ridges 50 and the flank surfaces of the groove 68 associated with the single hinge groove 64 having V-shaped cross sections, the insert cut 30 has a high level of resistance to shear forces at each index position.
    [0058] In some embodiments of the present invention, as shown in Figs. 3 and 4, a through hole 76 can extend coaxially with the central geometric axis A1 and open to the upper surface 32 and the end surface of the projection 52 of the cutting insert 30.
    [0059] In addition, in some embodiments of the present invention, as shown in Figs. 1 and 2, a fixing screw 78 can be located in the through hole 76 and threadedly engaged in a threaded hole 80 in the seating surface 60 to apply the fixing force.
    [0060] In other embodiments of the present invention (not shown), the through hole 76 can only open outwardly to the upper surface 32, and an alternative fastener can engage the through hole 76 to apply the clamping force.
    [0061] It should be noted that in addition to the benefits already described above, the improved stiffness of the cutting insert 30 provided by the single structural member, also advantageously reduces the susceptibility of the cutting insect 30 to fracture or deform during fixing and cutting operations.
    [0062] In some embodiments of the present invention, as shown in Figs. 5 and 6, the insert receiving cavity 26 may include a contact shoulder 84 84 behind the seating surface 60 having exactly two contact walls 86 entirely located beyond the engagement groove 64 than the two support surfaces 70 As shown in FIG. 5, in a top view of the tool holder 22, the two contact walls 86 can deviate in a forward direction.
    [0063] It should be noted that the use of the term "forward" throughout the description and claims, refers to a direction opposite to the backward direction. The forward direction is to the left, in Figs. 5 and 7.
    [0064] In addition, in some embodiments of the present invention, the through hole 76 and the threaded hole 80 can be eccentric to each other, such that a component of the clamping force can be directed backwards.
    [0065] As shown in Figs. 1, 2 and 7, while the lower surface 34 of the cutting insert 30 is fixed against the seating surface 60 of the insert receiving cavity 26, the peripheral side surface 36 of the cutting insert 30 can be simultaneously fixed against the shoulder contact 84 of the insert receiving cavity 26 solely by: each of the two relief surfaces 42 located beyond the operating edge cutting edge 44 making contact with a different one of the two contact walls 86. In addition, in some ways embodiments of the present invention, as shown in Fig. 7, the bisector planes of the vertical cavity and insert P2, P3 can be coplanar.
    权利要求:
    Claims (14)
    [0001]
    1. Single-sided square indexable cutting insert (30), comprising: opposing square top and bottom surfaces (32, 34) and a peripheral lateral surface (36) extending between them, the peripheral lateral surface ( 36) having four corner surfaces (40) alternating with four relief surfaces (42); a central geometric axis (Al) that passes through the upper and lower surfaces (32, 34), on which the central geometric axis of the cutting insert (30) is indexable; and a corner cutting edge (44) formed at the intersection of the upper surface (32) with each of the four corner surfaces (40), the lower surface (34) comprising: a base surface (46); and exactly four coupling ridges (50) protruding from the base surface (46), each coupling ridge (50) intersecting one of the four corner surfaces (40) and extending from it towards the central geometric axis (Al) in order to divide the base surface (46) into at least four base sub-surfaces (56), each coupling ridge (50) including a pair of parallel flank surfaces of the ridge (54) forming a V-shaped cross section; characterized by the fact that: a central projection (48) protrudes from the base surface (46) and has an end surface of the elevated projection (52), and each hitch ridge (50) intersects the central projection (48) to that end so as to separate the base sub-surfaces (56) from one another.
    [0002]
    2. Cutting insert (30) according to claim 1, characterized by the fact that: the base surface (46) defines a base plane (Pl); the central projection (48) protrudes at a first distance D1 from the base plane (P1) and each of the four coupling ridges (50) protrudes from a second distance D2 from the base plane (P1); and where D1 is equal to D2.
    [0003]
    Cutting insert (30) according to claim 2, characterized by the fact that each coupling ridge (50) includes an intermediate surface (58) away from its respective pair of ridge flank surfaces (54); and wherein the end surface of the projection (52) and the four intermediate surfaces (58) are coplanar and continuous.
    [0004]
    Cutting insert (30) according to claim 1, characterized by the fact that a through hole (76) extends coaxially with the central geometric axis (Al) and opens to the upper surface (32) and the surface end of the projection (52).
    [0005]
    Cutting insert (30) according to claim 1, characterized by the fact that in a bottom view of the cutting insert (30), the central projection (48) has a circular shape.
    [0006]
    Cutting insert (30) according to claim 1, characterized by the fact that each pair of ridge flank surfaces (54) intersects their respective corner surface (40).
    [0007]
    7. Cutting insert (30) according to claim 1, characterized by the fact that a vertical insert plane (P2) contains the central geometric axis (Al) and bisects two of the four corner cutting edges (44), and , the cutting insert (30) shows mirror symmetry around the vertical insert plane (P2).
    [0008]
    Cutting insert (30) according to claim 1, characterized by the fact that the pair of ridge flank surfaces (54) of each coupling ridge (50) forms an obtuse coupling angle (oc).
    [0009]
    9. Cutting tool (20), characterized by the fact that it comprises a tool holder (22) having a main body (24) with an insert receiving cavity (26) formed at a front end (28) thereof, and a cutting insert (30) as defined in claim 1, removably attached to the insert receiving cavity (26).
    [0010]
    Cutting tool (20) according to claim 9, characterized by the fact that: the insert receiving cavity (26) comprises: a seat surface (60) having a bottom surface (62) with a single groove hitch (64) recessed in it and two separate support blocks (66) protruding from it; the coupling groove (64) including a pair of parallel flank flank surfaces (68) forming a V-shaped cross section, and each of the two support blocks (66) having a raised support surface ( 70), where the two support surfaces (70) are coplanar, and the lower surface (34) of the cutting insert (30) is fixed against the seating surface (60) of the insert receiving cavity (26) only by: the pair of ridge flank surfaces (54) of the coupling ridge (50) located closest to the operating edge cutting edge (44) making contact with the corresponding pair of groove flank surfaces (68) in the groove single hitch (64); and the base surface (46) making contact with the two raised support surfaces (70) in two support zones (72) entirely located beyond the cutting edge of the operating corner (44) than the central geometric axis (Al ).
    [0011]
    Cutting tool (20) according to claim 10, characterized by the fact that the insert receiving cavity (26) includes a contact shoulder (84) behind the seat surface (60) having exactly two walls of contact (86), and the peripheral side surface (36) of the cutting insert (30) is fixed against the contact shoulder (84) of the insert receiving cavity (26) solely by: each of the two relief surfaces ( 42) located beyond the cutting edge of the operating corner (44) making contact with a different one of the two contact walls (86).
    [0012]
    Cutting tool (20) according to claim 10, characterized by the fact that each of the two support zones (72) is delimited by a different one of the two relief surfaces (42) located beyond the cutting edge of the operational machine (44).
    [0013]
    13. Cutting tool (20) according to claim 10, characterized by the fact that a central projection (48) having an end surface of the raised projection (52) protrudes from the base surface (46), and each coupling ridge (50) intersects the central projection (48) to separate the sub-surfaces (56) from each other, and the two support zones (72) are located on two of at least four base sub-surfaces (56).
    [0014]
    14. Cutting tool (20), characterized by the fact that it comprises a tool holder (22) having a main body (24) with an insert receiving cavity (26) formed at a front end (28) thereof, and a single-sided indexable square cutting insert (30) removably attached to the insert receiving cavity (26); the insert receiving cavity (26) comprising: a seat surface (60) having a bottom surface (62) with a single engaging groove (64) recessed therein and two separate support blocks (66) protruding from the same; the coupling groove (64) including a pair of parallel flank flank surfaces (68) forming a V-shaped cross section, and each of the two support blocks (66) having a raised support surface ( 70), where the two support surfaces (70) are coplanar, and the cutting insert (30) comprising: opposing square top and bottom surfaces (32, 34) and a peripheral side surface (36) extending between the same, the peripheral lateral surface (36) having four corner surfaces (40), alternating with four relief surfaces (42); a central geometric axis (Al) passing through the upper and lower surfaces (32, 34), around which the central geometric axis of the cutting insert (30) is indexable; and a corner cutting edge (44) formed at the intersection of the upper surface (32) with each of the four corner surfaces (40), the lower surface (34) including a base surface (46) and having exactly four ridges hitch (50) protruding from the base surface (46), each hitch ridge (50) including a pair of parallel flank surfaces of the ridge (54) forming a V-shaped cross section, and each coupling ridge (50) intersects one of the four corner surfaces (40) and extends from it to the central geometric axis (Al), where the lower surface (34) of the cutting insert (30) is fixed against the seating surface (60) of the insert receiving cavity (26) solely by: the pair of ridge flank surfaces (54) of the coupling ridge (50) located closest to the operating edge cutting edge (44) making contact with the corresponding pair of groove flank surfaces (68) on the single groove coupling lock (64); and the base surface (46) making contact with the two raised support surfaces (70) in two support zones (72) entirely located beyond the cutting edge of the operating corner (44) than the central geometric axis (Al )
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    同族专利:
    公开号 | 公开日
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    US20140227051A1|2014-08-14|
    EP2956263B1|2020-10-14|
    IL239931D0|2015-08-31|
    PT2956263T|2020-11-25|
    KR101860186B1|2018-05-21|
    JP2016507393A|2016-03-10|
    EP2956263A1|2015-12-23|
    RU2655409C2|2018-05-28|
    WO2014125475A1|2014-08-21|
    JP6374884B2|2018-08-15|
    RU2015139027A|2017-03-20|
    PL2956263T3|2021-03-08|
    IL239931A|2018-01-31|
    CA2901146A1|2014-08-21|
    KR20150111948A|2015-10-06|
    CA2901146C|2018-08-14|
    ES2824122T3|2021-05-11|
    CN104968456B|2017-08-25|
    CN104968456A|2015-10-07|
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    法律状态:
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-08-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-09-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/01/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/767,626|US9120154B2|2013-02-14|2013-02-14|Single-sided square-shaped indexable cutting insert and cutting tool|
    US13/767,626|2013-02-14|
    PCT/IL2014/050095|WO2014125475A1|2013-02-14|2014-01-28|Single-sided square-shaped indexable cutting insert and cutting tool|
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