• 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:
    single-sided indexable cutting insert, tool holder, and cutting tool. a single-sided indexable cutting insert (30), comprising: opposing rhombiform shaped upper and lower surfaces (32, 34) and a peripheral lateral surface (36) extending between them, the peripheral lateral surface (36) having obtuse and sharp corner surfaces (38, 40) separated by four relief surfaces (42); a central geo-metric axis (a1), passing through the upper and lower surfaces (32, 34), around whose central geometric axis the cutting insert (30) is indexable; and, a nose-shaped cutting edge (44) formed at the intersection of the upper surface (32), with each of the two sharp corner surfaces (40), with the lower surface (34) comprising: a base surface ( 46); and, a central protrusion (48) and exactly two coupling ridges (50) protruding from the base surface (46), the central protrusion (48) having an extreme raised protrusion surface (52) and each coupling crest (50) including a pair of crested flank surfaces extending in parallel, forming a v-shaped cross section, each coupling crest (50) intersecting one of the two sharp corner surfaces (40) and extending from there towards the central geometric axis (a1) to intersect the central protuberance (48), and the base surface (46) is divided into at least two separate base subsurface (56).
    公开号:BR112014017974B1
    申请号:R112014017974-3
    申请日:2013-02-07
    公开日:2020-09-01
    发明作者:Gil Hecht
    申请人:Iscar Ltd；
    IPC主号:
    专利说明:

    Field of the Invention
    [0001] The present invention relates to a cutting tool and a cutting insert, for use in metal cutting processes in general and for turning operations in particular. Fundamentals of the Invention
    [0002] 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 carrier. In some examples, these cutting tools are configured so that the cooperating surfaces of the cutting insert and the insert receiving cavity are formed with protrusions and recesses. In other examples, 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 joining elements.
    [0003] US 7,201,545 describes a cutting tool having a support, a shim and an interchangeable cutting insert. The wedge, having a substantially rhombiform shape, with substantially parallel upper and lower sides, is fixed in a carrier cavity. The cutting insert, having a substantially rhombiform shape, in analogy with the shim, is fixed against the shim, whereby three out of six protrusions on the underside of the cutting insert are in 'active' contact with two surfaces of support on the upper side of the block, while two recesses on the upper side of the block provide clearance for the other three 'passive' protrusions. Indexing the cutting insert at 180 ° results in the three “active” protrusions becoming “passive” and vice versa.
    [0004] US 7,387,474 describes a cutting tool having a holder with an insertion location and an interchangeable cutting insert, with a basic rhombic shape, attached to it. The insertion location includes two male-type coupling parts in the form of elongated ridges, oriented 90 ° to each other and forming a T-shaped configuration. One base side of the cutting insert includes two sets of female-type coupling parts, each set having two elongated grooves oriented at 90 ° to each other. At each indexing position of the cutting insert, one set is actively engaged with the two elongated ridges and the other set is inactive.
    [0005] It is an objective of the present invention to provide an improved cutting tool.
    [0006] It is also an objective of the present invention to provide an improved cutting tool, having an interchangeable cutting insert, removably attached to a tool holder with a high level of fixation stability and resistance to transverse cutting forces.
    [0007] It is another object of the present invention to provide an inherently rigid and precise interchangeable cutting insert.
    [0008] It is yet another objective of the present invention to provide a tool holder that can be efficiently manufactured. Summary of the Invention
    [0009] According to the present invention, an interchangeable single-sided cutting insert is provided, comprising: upper and lower diamond-shaped surfaces and a peripheral side surface extending therefrom, the peripheral side surface having corner surfaces alternating obtuse and acute, separated by four raised surfaces; a central geometric axis passing through the upper and lower surfaces, around whose central geometric axis the cutting insert is interchangeable; and a nose-shaped cutting edge, formed at the intersection of the upper surface, with each of the two sharp corner surfaces, the lower surface comprising: a base surface; and a central protrusion and exactly two hitch ridges protruding from the base surface, the central hump having an extreme high hump surface, and each hitch ridge including a pair of ridge flank surfaces extending parallel, forming a V-shaped cross section, in which each coupling crest intersects one of the two sharp corner surfaces and extends from there to the central geometric axis, to intersect the central protuberance, and the base surface is divided into at least two subsurface surfaces. separate bases.
    [00010] Also according to the present invention, a tool holder is provided comprising: a main body with an insert receiving cavity at its front end, the insert receiving cavity including a base surface and the base surface having a floor surface with a single recessed hitch groove on it and exactly two separate support steps projecting from there, the hitch groove including a pair of groove flank surfaces extending parallel, forming a V-shaped cross section; and each of the two support steps having a raised support surface, where the two support surfaces are coplanar and entirely located behind the coupling groove.
    [00011] Furthermore, 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 its front end and a cutting insert removably secured in the cavity insert receiver; the insert receiving cavity comprising: a base surface, having a floor surface with a single recessed support groove in it and two separate support steps protruding from it; the coupling groove including a pair of groove flank surfaces extending in parallel, forming a V-shaped cross section and each of the two support steps having a raised support surface, on which the two support surfaces are coplanar, and a cutting insert comprising: opposing rhombus-shaped upper and lower surfaces and a peripheral side surface extending between them, the peripheral side surface having alternating obtuse and acute corner surfaces, separated by four raised surfaces; a central geometric axis passing through the upper and lower surfaces, around whose central geometric axis the cutting insert is interchangeable; and a nose-shaped cutting edge formed at the intersection of the upper surface, with each of the two sharp corner surfaces, the lower surface including a base surface and having exactly two engaging ridges protruding from the base surface, in that each hitch ridge includes a pair of ridge flank surfaces extending in parallel, forming a V-shaped cross section and each hitch ridge intersects one of the two sharp corner surfaces and extends from there towards the central geometric axis , in which the lower surface of the cutting insert is secured against the base surface of the insert receiving cavity only by: by the pair of crested flank surfaces of the coupling ridge located closest to the operating nose shaped cutting edge, making contact with the corresponding pair of groove flank surfaces in the single hitch groove; and the base surface making contact with the two raised support surfaces in two support zones, entirely located closer to the cutting edge in the form of a non-operative nose than to the cutting edge in the form of an operating nose. Brief Description of Drawings
    [00012] For a better understanding, the invention will now be described, only as an example, with reference to the accompanying drawings, in which the current-trace lines represent cut-off limits for partial views of a limb 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 of 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 of Fig. 3; Fig. 5 is a top view of a tool holder 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 view of the cutting tool shown in Fig. 1, with a set screw removed; Fig. 8 is a sectional view of the cutting tool shown in Fig. 7, taken along line VIII-VIII. Fig. 9 is a sectional view of the cutting tool shown in Fig-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. Detailed Description of the Invention
    [00013] 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 its front end 28, and an interchangeable cutting insert of single side 30, removably trapped in the insert receiving cavity 26.
    [00014] 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 holding handle 82 extending outwardly from the front end 28 of the main body 24.
    [00015] Also 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 molding by compression and sintering a cemented carbide, such as tungsten carbide , and can be coated or uncoated.
    [00016] According to the present invention, as shown in Figs. 3 and 4, the cutting insert 30 has opposing diamond-shaped top and bottom surfaces 32, 34 and a peripheral side surface 36 extending between them, the peripheral side surface 36 having obtuse and sharp corner surfaces alternating 38 , 40, separated by four raised surfaces 42.
    [00017] A nose-shaped cutting edge 44 is formed at the intersection of the upper surface 32 with each of the two sharp corner surfaces 40.
    [00018] In some embodiments of the present invention, the cutting insert 30 can be described as 'positive', with the four raised surfaces 42 angled inward in a direction away from the upper surface 32.
    [00019] Also, in some embodiments of the present invention, the four embossed surfaces 42 can be flat.
    [00020] 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 30 is interchangeable around the central geometric axis Al.
    [00021] In some embodiments of the present invention, as shown in Fig. 4, the base surface 46 can define a base plane PI and the central geometric axis A1 can be perpendicular to the base plane Pl.
    [00022] Also in some embodiments of the present invention, as shown in Fig. 3, the cutting insert 30 can exhibit double rotational symmetry around the central geometric axis Al.
    [00023] Furthermore, in some embodiments of the present invention, as shown in Fig. 3, a longitudinal plane P2, extending along the longitudinal dimension of the upper and lower diamond-shaped surfaces 32, 34, may contain the central geometric axis Ale bisects the two sharp corner surfaces 40 and the two nose-shaped cutting edges 44. The cutting insert 30 can exhibit mirror symmetry in the P2 logitudinal plane.
    [00024] As also seen in Fig. 3, a transverse plane P4, extending along the short dimension of the upper and lower diamond-shaped surfaces, can also contain the central geometric axis Al and bisect the two obtuse corner surfaces 38. Thus, the longitudinal plane P2 and the transverse plane P4 can be perpendicular to each other and intersect at the central geometric axis Al. The cutting insert 30 may exhibit mirror symmetry around the transverse plane P4, in addition to the P2 plane .
    [00025] According to the present invention, as shown in Figs. 3 and 4, exactly two coupling ridges 50 protrude from the base surface 46, each interlocking ridge 50 including a pair of protruding flank surfaces extending parallel 54, forming a V-shaped cross section.
    [00026] In some embodiments of the present invention, as shown in Figs. 8 and 10, the pair of ridge flank surfaces 54 of each engagement ridge 50 may form an obtuse engagement angle a. The engagement angle oc has a preferable range of 90 ° - 150 °.
    [00027] In other embodiments of the present invention (not shown), the two surface components of the crest flank surface pair 54 of each engagement crest 50 can be convex outwardly.
    [00028] According to the present invention, as shown in Figs. 3 and 4, each coupling ridge 50 intersects one of the two sharp corner surfaces 40 and extends from there towards the central geometric axis A1.
    [00029] In some embodiments of the present invention, as shown in Figs. 3 and 4, a central protrusion 48 can protrude from the base surface 46, the central protrusion 48 can have an extreme high protruding surface 52 and each engagement ridge 50 can intersect the central protrusion 48, thereby dividing the surface of base 46 in at least two separate base subsurfaces 56, which do not communicate.
    [00030] It should be noted that the two sharp corner surfaces 40 represent the two corner surfaces furthest apart, and the two engagement ridges 50 blend with the central protuberance 48 to form a single structural member extending between these two corner surfaces further apart from each other 40. This single structural member improves the stiffness of the cutting insert 30, so that deformations and inaccuracies resulting from the sintering process of the cutting insert 30 are reduced to a minimum.
    [00031] In some embodiments of the present invention, as shown in Fig. 3, the base surface 46 can have exactly two identical base subsurface 56.
    [00032] Also in some embodiments of the present invention, as shown in Fig. 4, the central protrusion 48 can project for a first distance D1 from the base plane P1 and the two engagement ridges 50 can project by a second distance D2 from the base plane Pl, where D1 is equal to D2.
    [00033] It should be appreciated that the use of the term “V-shaped” throughout the description and claims, is not limited to a pair of flank surfaces forming a “v” shape and intersecting at a vertex point (when seen in cross section), but it is also responsible for an additional surface spacing the pair of flank surfaces between them.
    [00034] In some embodiments of the present invention, as shown in Figs. 3 and 4, each engagement ridge 50 may include an intermediate surface 58 spacing its respective pair of ridge flank surfaces 54 with each other, and the protruding end surface 52 of the central protrusion 48 and the two intermediate surfaces 58 may be coplanar and continuous. Thus, the term "V-shaped" applies to each hitch ridge 50 having such an intermediate surface 58 moving away from its respective pair of ridge flank surfaces 54.
    [00035] Furthermore, in some embodiments of the present invention, as shown in Fig. 3, each intermediate surface 58 can have an intermediate width W, where W is greater than half and D2 and less than D2.
    [00036] 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.
    [00037] It should also be noted that the intermediate width W, being smaller than the second distance D2, causes each pair of ridge flank surfaces 54 to extend in close proximity to their respective sharp corner surface 40 , thus providing good support for its associated nose shaped cutting edge 44, when operative.
    [00038] According to the present invention, as shown in Figs. 5 and 6, the insert receiving cavity 26 includes a base surface 60, the base surface 60 having a weight surface 62 with a single recessed groove 64 therein and two separate supporting steps 66 projecting from there.
    [00039] The hitch groove 64 includes a pair of groove flank surfaces extending parallel 68, forming a V shaped cross section and each of the two supporting steps 66 has an elevated support surface 70.
    [00040] As shown in Fig. 8, the V-shaped cross section of the groove flank surface pair 68 corresponds to the V-shaped cross section of the ridge flank surfaces 54 of the coupling ridge 50 located closest to the edge of cut on operative nose 44. However, the intermediate surface 58 of the coupling ridge 50, located closer to the cutting edge in the form of operative nose 44, does not contact any surface of the coupling groove 64.
    [00041] The two support surfaces 70 are coplanar and entirely located behind the coupling ridge 64.
    [00042] It should be noted that the use of the term "back" and "front" throughout the description and claims refers to a direction from the front end of the tool holder 28 towards the main tool holder body 24. This direction is to the right, in Figs. 5 and 7.
    [00043] It should also be noted that the base surface 60, being configured with the single hitch groove 64 and the two coplanar support surfaces 70, as opposed to an alternative configuration with more than one hitch groove or ridge, allows that the insert receiving cavity 26 is manufactured with greater efficiency.
    [00044] In some embodiments of the present invention, as shown in Fig. 5, a bisecting plane of cavity P3 can longitudinally bisect the engaging groove 64 and the base surface 60 may exhibit mirror symmetry in the bisecting plane of cavity P3 .
    [00045] Also in some embodiments of the present invention, as shown in Fig. 5, the pair of groove flank surfaces 68 can be entirely located closer to the bisector plane of cavity P3 than are the two supporting surfaces. 70.
    [00046] According to the present invention, as shown in Figs. 7 to 10, the lower surface 34 of the cutting insert 30 is secured against the sealing surface 60 of the insert receiving cavity 26 solely by: a pair of ridge flank surfaces 54 of the coupling ridge 50, located closest to the edge cutting in operative nose 44, making contact with the pair of grooved flank surfaces 68 of the single hitch groove 64; and the base surface 46 making contact with the two raised support surfaces 70 in two support zones 72 entirely located closer to the cutting edge and non-operating nose 44 than the cutting edge in operating nose 44.
    [00047] In some embodiments of the present invention, as shown in Fig. 2, the two support zones 72 can be located on two base subsurface 56.
    [00048] Also, in some embodiments of the present invention, as shown in Figs. 5 and 6, the floor surface 62 may include a central recess 74.
    [00049] As shown in Fig. 9, the central recess 74 can provide clearance between the central protuberance 48 and the insert receiving cavity 26 and, as shown in Fig. 10, the central recess 74 can provide clearance between the coupling ridge operative 50 and the insert receiving cavity 26.
    [00050] Also in 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 limited by a different one of the two raised surfaces 42, located closer to the non-operative nose-shaped cutting edge 44.
    [00051] It should be noted that the lower surface 34 of the cutting insert 30 is effectively secured against the base 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 in a substantially central location, to define an optimum point, through which a clamping force can be applied to obtain a high level of clamping stability.
    [00052] Also by virtue of the ridge flank surfaces 54, associated with the two hitch ridges 50 and the groove flank surfaces 68 associated with the single hitch groove 64 having V-shaped cross sections, the cutting insert 30 it has a high level of resistance to the transverse cutting forces of each index position.
    [00053] 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 for both the upper surface 32 and the extreme surface of the protrusion 52 of the cutting insert 30.
    [00054] Also in some embodiments of the present invention, as shown in Figs. 1 and 2, a clamping screw 78 can be located in the through hole 76 and screwed into a threaded hole 80 of the base surface 60, to apply the clamping force.
    [00055] In other embodiments of the present invention (not shown), the through hole 76 can only open to the upper surface 32 and an alternative fixing member can engage the through hole 76 to apply the fixing force.
    [00056] It should be noted that, in addition to the benefits already described above, the improved rigidity of the cutting insert 30, provided by the structural member formed by the two coupling ridges 50 merging with the central protuberance 48, also advantageously reduces the susceptibility of the cutting insert 30 to fracture or deformation during clamping and cutting operations.
    [00057] 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 behind the base surface 60, having exactly two contact walls 86 entirely located further away from 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 diverge in a forward direction.
    [00058] 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.
    [00059] Also in some embodiments of the present invention, as in Fig. 7, the through hole 76 and the threaded hole 80 can be eccentric to each other, so that a component of the clamping force can be directed backwards.
    [00060] As shown in Figs. 1, 2 and 7, while the lower surface 34 of the cutting insert 30 is secured against the base surface 60 of the insert receiving cavity 26, the peripheral side surface 36 of the cutting insert 30 can be simultaneously secured against the contact shoulder. 84 of the insert receiving cavity 26 solely by: each of the two raised surfaces 42, located closer to the cutting edge in the form of a non-operative nose 44, making contact with a different one of the two contact walls 86.
    [00061] In addition, in some embodiments of the present invention, as shown in Fig. 7, the bisector and longitudinal planes P2, P3 can be coplanar.
    权利要求:
    Claims (15)
    [0001]
    1. Interchangeable single-sided cutting insert (30), comprising: opposing rhombiform shaped upper and lower surfaces (32, 34) and a peripheral lateral surface (36) extending between them, the peripheral lateral surface (36) having obtuse and sharp corner surfaces (38, 40) separated by four relief surfaces (42), the two sharp corner surfaces (40) representing the two surfaces furthest apart; a central geometric axis (Al), passing through the upper and lower surfaces (32, 34), around whose central geometric axis the cutting insert (30) is interchangeable; and a nose-shaped cutting edge (44) formed at the intersection of the upper surface (32), with each of the two sharp corner surfaces (40), the lower surface (34) comprising: a base surface (46) ; characterized by the fact that: a central protrusion (48) and exactly two coupling ridges (50) protrude from the base surface (46), the central protrusion (48) having an extreme high protrusion surface (52) and each coupling ridge (50) including a pair of ridge flank surfaces (54) extending in parallel, forming a V-shaped cross section; and, each coupling ridge (50) intersects one of the two sharp corner surfaces (40) and extends from there towards the central geometric axis (Al) to intersect the central protuberance (48), and the base surface (46) ) is divided into at least two separate base subsurface (56).
    [0002]
    Cutting insert (30) according to claim 1, characterized in that each coupling ridge (50) includes an intermediate surface (58) spacing its respective pair of ridge flank surfaces (54) from each other; and, the extreme protruding surface (52) and the two intermediate surfaces (58) are coplanar and continuous.
    [0003]
    3. Cutting insert (30) according to claim 1, characterized by the fact that a longitudinal plane (P2) contains the central geometric axis (Al) and bisects the two nose-shaped cutting edges (44); and, the cutting insert (30) exhibits mirror symmetry around the longitudinal plane (P2).
    [0004]
    4. 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 up both the upper surface (32) and to the extreme protruding surface (52).
    [0005]
    Cutting insert (30) according to claim 1, characterized in that the base surface (46) comprises exactly two identical sub-surfaces (56).
    [0006]
    6. Tool holder (22), characterized by the fact that it comprises: a main body (24) with an insert receiving cavity (26) at a front end (28), the insert receiving cavity (26) including a surface base (60) and the base surface (60) having a floor surface (62) with a single hitch groove (64) recessed in it and exactly two separate support steps (66) projecting from there; the coupling groove (64) including a pair of groove flank surfaces extending in parallel (68), forming a V-shaped cross section; and each of the two support steps (66) having a raised support surface (70), where the two support surfaces (70) are coplanar and entirely located behind the coupling groove (64).
    [0007]
    7. Tool holder (22) according to claim 6, characterized in that the insert receiving cavity (26) includes a contact shoulder (84) behind the base surface (60), having exactly two walls of contact (86) entirely located further away from the coupling ridge (64) than the two supporting surfaces (70); and, in a top view of the tool holder (22), the two contact walls (86) diverge in a forward direction.
    [0008]
    8. Tool holder (22) according to claim 6, characterized by the fact that a cavity bisector plane (P3) bisects the coupling groove (64) longitudinally; and, the base surface (60) shows mirror symmetry around the bisector plane of the cavity (P3).
    [0009]
    9. Tool holder (22) according to claim 8, characterized in that the pair of groove flank surfaces extending parallel (68) are entirely located closer to the bisector plane of the cavity (P3) than the two support surfaces (70).
    [0010]
    10. 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 its front end (28), and an insert cutting (30) removably trapped in the insert receiving cavity (26); the insert receiving cavity (26) comprising: a base surface (60) having a floor surface (62) with a single engaging groove (64) recessed in it and two separate supporting steps (66) protruding from it; the coupling groove (64) including a pair of groove flank surfaces extending in parallel (68), forming a V-shaped cross section and each of the two support steps (66) having an elevated support surface (70 ); wherein the two supporting surfaces (70) are coplanar and the cutting insert (30) comprises: opposing rhombus-shaped upper and lower surfaces (32, 34) and a peripheral lateral surface (36) extending between them, the peripheral side surface (36) having obtuse and sharp corner surfaces (38, 40) separated by four raised surfaces (42); a central geometric axis (Al) passing through the upper and lower surfaces (32, 34), around whose central geometric axis the cutting insert (30) is interchangeable; and, a nose cutting edge (44) formed at the intersection of the upper surface (32) with each of the two sharp corner surfaces (40); the bottom surface (34) including a base surface (46) and having exactly two engagement ridges (50) protruding from the base surface (46), each coupling ridge (50) including a pair of crest flank extending in parallel (54), forming a V-shaped cross section, and each coupling crest (500 intersects one of the two sharp corner surfaces (40) and extends from it towards the central geometric axis (Al ), wherein the lower surface (34) of the cutting insert (30) is secured against the base surface (60) of the insert receiving cavity (26) only: by the pair of ridge flank surfaces (54) of the ridge hitch (50) located closest to the operating nose-shaped cutting edge (44) making contact with the corresponding pair of groove flank surfaces 968) of the single hitch groove (64); and the base surface (46) making contact with the two raised support surfaces (70) in two support zones (72) located entirely closer to the non-operative nose-shaped cutting edge (44) than to the cutting edge. operative nose cut (44).
    [0011]
    Cutting tool (20) according to claim 10, characterized in that a central protrusion (48), having an extreme high protruding surface (52), protrudes from the base surface (46) and each coupling ridge (50) intersects the central protuberance (48); and, the base surface (46) is divided into at least two separate base subsurface (56) and the two support zones (72) are located in two of the at least two base subsurface (56).
    [0012]
    Cutting tool (20) according to claim 10, characterized in that the insert receiving cavity (16) includes a contact shoulder (84) behind the base surface (60) having exactly two contact walls (86); and, the peripheral lateral surface (36) of the cutting insert (30) is secured against the contact shoulder (84) of the receiving cavity only by each of the two raised surfaces (42), located closest to the cutting edge in non-operative nose shape (44), making contact with a different one of the two contact walls (86).
    [0013]
    13. Cutting tool (20) according to claim 10, characterized by the fact that the two support zones (72) are delimited by a different one from the two raised surfaces (42), located closer to the cutting edge in non-operative nose shape (44).
    [0014]
    14. Cutting tool (20) according to claim 11, characterized in that: each coupling ridge (50) includes an intermediate surface (58) spacing its respective pair of ridge flank surfaces (54) ; the extreme protruding surface (52) and the two intermediate surfaces (58) are coplanar and continuous; and, the intermediate surface (58) of the coupling ridge (50), located closer to the operating nose-shaped cutting edge (44), does not contact any surface of the coupling ridge (64).
    [0015]
    15. Cutting tool (20) according to claim 11, characterized in that: a through hole (76) extends coaxially with the central geometric axis (Al) and the upper surface (32) opens up as the extreme protruding surface (52); a fixing screw (78), located in the through hole (76), is screwed into a threaded hole (80) of the base surface (60); and, the through hole (76) and the threaded hole (80) are eccentric to each other.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    IL58006A|1979-08-08|1983-02-23|Iscar Ltd|Cutting insert with chip control means|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-05-19| B06A| Patent application procedure suspended [chapter 6.1 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 [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/02/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/413387|2012-03-06|
    US13/413,387|US8821079B2|2012-03-06|2012-03-06|Cutting tool and cutting insert therefor|
    PCT/IL2013/050118|WO2013132479A1|2012-03-06|2013-02-07|Cutting tool and cutting insert therfor|
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