• 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:
    cutting insert a cutting insert (20) has a cutting edge (26) formed at an intersection of an inclined surface (28) and a raised surface (30) with a chip control arrangement (32) located on the surface inclined (28). the chip control arrangement (22) includes a plurality of recesses (50, 74) extending downwards on the inclined surface (28) and a plurality of projections (52, 72) extending upwards from the inclined surface (28). the plurality of recesses (50, 74) follows a pattern of increasing depth in a backward direction (dr) from the front portion (25) of the cutting edge (26). the plurality of projections (52, 72) follows a pattern of increasing height in a backward direction (dr) from the front portion (25) of the cutting edge (26).
    公开号:BR112014027622B1
    申请号:R112014027622-6
    申请日:2013-04-22
    公开日:2020-09-15
    发明作者:Sergey Chistyakov
    申请人:Iscar Ltd；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [0001] The subject of the present application relates to a chip control arrangement for a cutting insert. Such an arrangement can be formed in an insert configured for, among other things, thread turning operations. BACKGROUND OF THE INVENTION
    [0002] Cutting inserts can be provided with a chip control arrangement to control the flow of and / or control the shape and size of the swarf and debris that result from metalworking operations.
    [0003] Such chip control arrangements generally consist of recesses and / or projections located close to the cutting edge of the insert. Upon finding the recesses and / or projections, metal shavings can be created with specific shapes and can then be evacuated from there.
    [0004] Various chip control arrangements are described in US 7,182,555, US 4,214,845, US 6,742,971, US 6,676,339, US 8,137,035 and CN101870017.
    [0005] For threading operations the shape of the cutting edge of the cutting insert is determined by the desired pointed shape of the thread itself. However, the corresponding pointed shape of the cutting edge is not the most advantageous shape for turning operations and can cause the cutting insert to become damaged and unsuitable for use. To overcome this problem, a compromise is to achieve the desired depth of cut of the thread by making several passes in the piece, as opposed to a single pass. Differently described, the cutting operation is performed several times. Each pass cuts deeper into the part, until the desired thread depth is reached. In addition, the various passes can be made using one of several cutting methods. For example, passes can be radial. This means that the tool is fed at a right angle to the workpiece. Alternatively, flank feed passes can be performed, so the tool is fed at an angle usually between 3rd and 5th with the workpiece. Regardless of the method of cutting performed, more than one pass is generally required.
    [0006] It is an objective of the present invention to provide a new chip control arrangement that is particularly effective for threading.
    [0007] It is another objective of this application to provide a new chip control arrangement that is effective with each pass made. Described differently, the chip control arrangement is effective at different depths of cut.
    [0008] It is yet another objective of the present order to provide a new chip control arrangement that is effective for both cutting methods, both radial and flank feed. SUMMARY OF THE INVENTION
    [0009] According to the subject matter of a first aspect of the present application, a cutting insert is provided comprising: a cutting portion having a cutting axis geometry that defines a direction from front to back, the cutting portion comprising a cutting edge formed at an intersection of an inclined surface and a relief surface; and an arranged chip control arrangement located on the inclined surface; the chip control arrangement comprising: a plurality of recesses extending downwardly into the inclined surface; and a plurality of projections extending upwards from the inclined surface; wherein the plurality of recesses follows a pattern of increasing depth in a backward direction from the front portion of the cutting edge; and the plurality of projections follows a pattern of increasing height in a backward direction from the front portion of the cutting edge.
    [00010] According to the subject matter of a second aspect of the present application, a cutting insert is provided comprising: a cutting portion having a cutting axis geometry that defines a direction from front to back, the cutting portion comprising a cutting edge formed at an intersection of an inclined surface and a relief surface, the cutting edge being bisected by the geometric axis of the cutting portion in a plan view of the cutting portion; and a chip control arrangement located on the inclined surface; the chip control arrangement comprising: a plurality of recesses extending downwardly to the inclined surface; and a plurality of projections extending upwards from the inclined surface; wherein the plurality of recesses follows a pattern of increasing depth in the backward direction from where the cutting edge is bisected; and the plurality of projections follows a pattern of increasing height in the backward direction from where the cutting edge is bisected.
    [00011] The chip control arrangement has been found to be advantageous for threading cutting inserts, in particular for working stainless steel. However, such chip control arrangements could possibly be advantageous for other types of operations such as, for example, grooving.
    [00012] It is understood that what is said above is a summary, and that aspects described hereinafter may be applicable in any combination to the subject of the present application, for example, any of the following aspects may be applicable to the cutting insert or trim control arrangement:
    [00013] The plurality of recesses can be arranged in rows of recesses each row of recesses extending on a recess plane that is perpendicular to the geometric axis of the cutting portion, and each recess of a first row of recesses has a first depth of recess of less magnitude than a second recess depth of each recess of an adjacent second recess row, which is axially further away from the cutting edge than the first recess row.
    [00014] The first row of undercuts, which is axially closest to the cutting edge, can comprise exactly one undercut.
    [00015] Each row of counters other than the first row of counters axially closest to the cutting edge can comprise exactly two counters.
    [00016] The chip control arrangement can comprise exactly three rows of undercuts.
    [00017] A distance of row of recesses between adjacent pairs of rows of recesses can increase in the backward direction.
    [00018] The recesses in a third row of recesses can be further apart from one another, unlike the recesses in the second row of recesses, the third row of recesses being axially further from the cutting edge and adjacent to the second row of recesses.
    [00019] The outermost recesses in each row of recesses on at least one side of the geometric axis of the cutting portion can be located along a straight path, in a plan view of the cutting portion.
    [00020] The straight path and the cutting edge can be parallel in a plan view of the cutting portion.
    [00021] Each of the plurality of recesses can be substantially spherical.
    [00022] The second row of undercuts can be located in front of a more rear portion of the cutting edge.
    [00023] The cutting edge may comprise a first and a second collateral cutting edge having a corner cutting edge at its intersection, the first and second cutting edges being transversal to the geometric axis of the cutting portion in a plan view of the cutting portion.
    [00024] The cutting edge may comprise a first and a second lateral cutting edge which extend from the first and second collateral cutting edges, respectively, and form an obtuse external angle with it and are substantially perpendicular to the geometric axis of the portion in a plan view of the cutting portion.
    [00025] The plurality of projections can be arranged in rows of projections, each row of projections can extend on a projection plane that is perpendicular to the geometric axis of the cutting portion and each projection of a first projection row has a first height of projection of magnitude less than a second projection height of each projection of a row of an adjacent second projection row, which is axially further from the cutting edge than the first projection row.
    [00026] Each projection row can be located between an adjacent pair of recess rows.
    [00027] Two outermost recesses on the same side of the geometric axis of the cutting portion in adjacent recess rows can be interposed, at least partially, by one of the plurality of projections.
    [00028] The projection row axially closest to the cutting edge can comprise exactly one projection.
    [00029] Each projection row other than the first projection row, which is axially closest to the cutting edge, can comprise exactly two projections.
    [00030] The chip control arrangement can comprise exactly two rows of projection.
    [00031] The chip control arrangement may comprise an axial ridge that extends axially from a further projection in the backward direction.
    [00032] The chip control arrangement may comprise two central convex ridges extending from each outermost projection in a second projection row further forward and towards the rear portion of the axial ridge respectively.
    [00033] The chip control arrangement may comprise an elongated nose that extends in a forward direction and be located between the outermost recesses in the rearmost recess row.
    [00034] The chip control arrangement may comprise two transverse convex ridges extending between each outermost projection in a second row of forward projection and a forward portion of the elongated nose, respectively.
    [00035] The projection towards the front can be located axially behind the recess towards the front.
    [00036] The chip control arrangement may comprise an inclined surface that extends upwards, which is generally facing in the forward direction and is located behind the back row of recesses further back. .
    [00037] The cutting insert may comprise a chip deflection surface that extends down between the cutting edge and the chip control arrangement.
    [00038] In a plan view of the cutting portion the chip control arrangement can be placed symmetrically around the geometric axis of the cutting portion.
    [00039] The cutting insert may have a geometric axis of cutting insert and comprise first and second insert sides connected by a peripheral insert surface that extends peripherally around the cutting insert. The cutting edge can be located on the peripheral insert surface and is spaced from, and extends between, the first insert side and the second insert side.
    [00040] The cutting insert can comprise exactly five cutting edges.
    [00041] The geometric axis of the cutting portion can bisect the cutting edge in a plan view of the cutting portion.
    [00042] The rows of undercut can alternate with the rows of projection in the backward direction.
    [00043] The cutting edge can be symmetrical around the geometric axis of the cutting portion.
    [00044] The first row of undercut, which is axially closest to where the cutting edge is bisected, can comprise exactly one undercut.
    [00045] The first projection row, which is axially closest to where the cutting edge is bisected, can comprise exactly one projection. BRIEF DESCRIPTION OF THE FIGURES
    [00046] For a better understanding of this application and to show how it can be done in practice, reference will now be made to the accompanying drawings, in which: Figure 1 is a perspective view of a cutting insert; Figure 2 is a side view of the cutting insert in Figure 1; Figure 3 is a plan view of the cutting insert in Figure I; Figure 4 is a perspective view of a section of the cutting insert in Figures 1 to 3; Figure 5 is a plan view of the cutting portion of the cutting insert in Figure 4; Figure 6 is a plan view of the cutting portion of the cutting insert in Figure 4; Figure 7 is a cross-sectional view taken along line VII-VII in Figure 5; Figure 8 is a cross-sectional view taken along a line VIII-VIII in Figure 5; and Figure 9 is a superimposed view of three cross-sectional views, taken along the recess planes in Figure 8; Where deemed appropriate, reference numerals may be repeated between figures to indicate corresponding or similar elements. DETAILED DESCRIPTION OF THE INVENTION
    [00047] In the description below, various aspects of the subject matter of this application will be described. For purposes of explanation, specific detail settings are described in sufficient detail to provide a good understanding of the subject of the present application. However, it will also be apparent to someone skilled in the art that the subject of the present application can be made practical without the specific configurations and details presented here.
    [00048] Attention is first brought to figures 1 to 3 showing a cutting insert 20 with a chip control arrangement 22. Cutting insert 20 comprises a cutting portion 24 which has a cutting axis A axis which defines a direction from front to back DF, DR. It should be appreciated that the use of the terms "forward" and "backward" throughout the description and claims refers to a relative position in a direction of geometric axis A of the cutting portion generally in the left and right direction respectively in figures 3, 5 and 6. The cutting portion 24 comprises a cutting edge 26 shaped at an intersection of an inclined surface 28 and a relief surface 30. The cutting edge 26 can be symmetrical about the geometric axis of the portion cutting edge A. The axis A of the cutting portion can bisect the cutting edge 26 in a plan view of the cutting portion 24.
    [00049] According to some embodiments of the subject matter of the present application, the cutting insert 20 can have a geometric axis of cutting insert I. The cutting insert 20 can comprise first and second insert sides 32A, 32B, connected by a peripheral insert surface 34 which extends peripherally around the cutting insert 20. It is observed that in this non-limiting example the cutting insert 20 is formed with a fixing hole 36 located in its middle, in a side view of the insert cutting edge 20, which opens to the first and second insert sides 32A, 32B and is configured to accommodate a fastener (not shown) throughout. It is understood that alternative methods of fixing an insert to an insert holder can be employed, for example, fixation jaws, and therefore, such inserts could be devoid of a fixation hole 36.
    [00050] Referring to figure 4, the cutting edge 26 can be located on the peripheral insert surface 34 and can be moved away from, and extending between, the first insert side 32A and the second insert side 32B. The cutting edge 26 can comprise a first and a second cutting side edge 38, 40 with a cutting corner edge 42 at its intersection. The first and second side cutting side edges 38, 40 can be transversal to the geometric axis A of the cutting portion in a plan view of the cutting portion 24. The cutting edge 26 can comprise a first and a second cutting edge side 44, 46 extending from the first and second edges of a cutting side 38, 40 respectively, and forming an obtuse external angle with them in the plan view of the cutting portion 24. In some embodiments the first and second cutting edges side section 44, 46 are substantially perpendicular to the axis A of the cutting portion in a plan view of the section portion 24. The purpose of the first and second side cutting edges 38, 40 is to provide a thread with a rounded ridge truncation .
    [00051] Referring now to the plan view of the cutting portion 24 in figure 5, the corner cutting edge 42 of the cutting insert 20 can be curved to a predetermined radius of curvature R. In this non-limiting example, the cutting edge corner cut 42 subtends a corner angle 0 of 125 °. This means that the corner cutting edge 42 follows an arc of 125 ° that has a radius of curvature R. In another non-limiting example, the corner cutting edge 42 subtends a corner angle 0 of 120 °. It is understood that the corner cutting edge 42 which has a radius of curvature R subtends a corner angle θ that fulfills the condition 120 ° <θ <125 °. Described differently, the first and second collateral cutting edges 32A, 32B can form an angle in a range that is 55 °> 60 °. The purpose of the corner cutting edge 42 and the first and second side cutting edges 38, 40 is to provide a thread with the desired pointed thread shape. Specifically, the shape of the corner cutting edge 42 defines the shape of the thread root truncation.
    [00052] The cutting insert 20 can comprise exactly five cutting edges 26A, 26B, 26C, 26D, 26E. Although in this non-limiting example the cutting insert 20 is indexable, with each of its five cutting edges 26A, 26B, 26C, 26D, 26E being formed with the chip control arrangement 22, it is sufficient for the description hereinafter refer only to the cutting edge 26 in the cutting portion 24. It is also understood that a cutting insert according to the subject of the present application could comprise one or more cutting portions 24 with such a chip control arrangement 22, and a or more other cutting portions that are devoid of any chip control arrangement or that are formed with a different chip control arrangement. To elaborate, for example, the chip control arrangement 22 could be developed in any number of cutting portions of the cutting insert 20 and / or at least two or more cutting portions of it in a case where an insert is indexable.
    [00053] According to some embodiments of the subject matter of this application, a chip deflection surface 48 may extend downward between the cutting edge 26 and the chip control arrangement 22. It should be appreciated that the use of the terms “ up ”and“ down ”throughout the description and claims, refers to a relative position in a direction perpendicular to the geometric axis of the cutting portion A, generally up and down, respectively, in figures 7 to 9.
    [00054] Referring now to figure 5, the chip control arrangement 22 is located on the inclined surface 28. The chip control arrangement 22 comprises a plurality of recesses 50, 74 extending downwardly to the inclined surface 28 and a plurality of projections 52, 72 extending upwards from the inclined surface 28. The chip control arrangement 22 is designed to control the flow and / or the shape and size of the swarf and debris resulting from work operations in metal. Referring now to Figure 9, which shows three cross-sectional views taken along each recess plane PR superimposed on each other, and looking along the geometric axis A of the cutting portion in a rearward direction DR, the plurality of recesses 50, 74 follows a pattern of increasing depth in a backward direction DR from the forward portion 25 of the cutting edge 26. Depths are measured in a downward direction DD from an arbitrary foreground PI located above the recess of minimum depth.
    [00055] Referring to figures 6 and 8, according to some modalities of the subject of the present application, the plurality of recesses 50, 74 can be arranged in rows of recesses 54, 56, 58, 60, 84. Each row of recess 54 can extend in a plane of recess PR which is perpendicular to the geometric axis of the cutting portion A. Referring again to figure 4, each recess 50 of a first row of recesses 56 may have a first DED depth of magnitude less than that a second recess depth DE2 of each recess 50 of an adjacent second recess row 58 which is axially further from the cutting edge 26 than the first recess row 56, i.e. DEI <DE2- In the same way the second recess depth DE2 of each recess 50 of the second recess row 58 is less than a third recess depth FROM each recess 50 in a third recess row 60, the third recess row 60 being axially furthest from the cutting edge 26 and adjacent to the second recess row 58, that is, DE2 <DE3.
    [00056] The first row of recesses 56 which is axially closest to the cutting edge 26, that is, the row of recesses axially further forward may comprise exactly one recess 50. Referring again to figure 6, the first row of recesses 56 which is axially closest to the cutting edge 26 has a single recess 50 which mounts the geometric axis of the cutting portion A. Each row of recesses 58, 60, 84 other than the first row of recesses 56 can comprise exactly two recesses 50. In a direction along the geometrical axis of the cutting portion A, a distance of recess rows D2, D2 between adjacent pairs of recess rows 54, 56, 58, 60, 84 can increase in the backward direction DR and so in the figure 8 D2> Dl. In a direction perpendicular to the geometric axis A of the cutting portion, the recesses 50 in the third row of recesses 60 can be further apart from each other than the recesses 50 in the second row of recesses 58.
    [00057] As seen in figures 5 and 6, the outermost recesses 50 in each recess row 54, 56, 58, 60, 84 on at least one side of geometry axis A of the cutting portion can be located along a straight path P, in plan view of the cutting portion 24. In rows of recesses 54 with only a single recess 50 or a single recess 50 is the outermost recess 50. It should be appreciated that the use of the term “outerest ”Throughout the description and claims refers to a relative position in a direction perpendicular to the geometric axis A of the cutting portion away from the geometric axis of the cutting portion A, respectively, in figures 5 and 6. The straight path P and the cutting edge 26 can be parallel in a plan view of the cutting portion 24.
    [00058] According to some embodiments of the subject matter of the present application, each of the plurality of recesses 50 may be substantially spherical.
    [00059] Referring again to figure 8, the plurality of projections 52, 72 follows a pattern of increasing height in a backward direction DR from the forward portion 25 of the cutting edge 26. The heights are measured in an upward direction Dl from an arbitrary background P2 located below the minimum height projection.
    [00060] According to some modalities of the subject matter of the present application, the plurality of projections 52 can be arranged in rows of projections 62, 66, 68, 80. Each row of projections 62, 66, 68, 80 can extend in one plane of projections Pp that is perpendicular to the geometric axis of the cutting portion A. Each projection 52 of a first row of projections 66 can have a first HEI projection height of magnitude smaller than a second HE2 projection height of each projection 52 of an adjacent second row of projections 68, which is axially further away from the cutting edge 26 than the first row of projections 66, i.e., HEI <HE2. Each row of projections 62, 66, 68, 80 can be located between the adjacent pair of rows of recesses 54. Described differently, rows of recesses 54 alternate with rows of projections 62 in the DR back direction. Two outermost recesses 50 on the same side as geometry axis A of the cutting portion in rows of adjacent recesses 54 can be interposed at least partially by one of the plurality of projections 52. The first projection row 66, which is axially closest to the edge cutting row 26, that is, the row of projections axially further forward can comprise exactly one projection 52. Each row of projections 68, 80 other than the first row of projections 66 axially closest to the cutting edge 26 can comprise exactly two projections 52 A further forward projection 72 can be located axially behind a further forward recess 74.
    [00061] According to some embodiments of the subject matter of the present order the chip control arrangement 22 may comprise exactly three rows of recesses 54, 56, 58, 60, 84. The chip control arrangement 22 may comprise exactly two rows of recesses projections 62, 66, 68, 80.
    [00062] Referring now to figure 5, the chip control arrangement 22 may comprise an axial ridge 76 which extends axially from the forward projection 72 in the DR back direction. The chip control arrangement 22 may comprise two central convex ridges 78 and extend from each outermost projection 52 into a second forward projection row 80 towards a rear portion of the axial ridge 76. The two convex ridges central 78 can extend in a direction generally perpendicular to the geometric axis of the cutting portion A. The chip control arrangement 22 may comprise an elongated nose 82 which extends in a forward direction DF and which is located between the outermost recesses 50 in the rearmost recess row 84. The chip control arrangement 22 may comprise two transverse convex ridges 86 extending between each outermost projection 52 in the second forwardmost projection row 80 and a forward portion of the elongated nose 82, respectively. The chip control arrangement 22 may comprise an inclined surface 88, which extends upwards, which generally turns in the forward direction DF and is located behind the rearmost recessed row 84. In a plan view of the portion the cutting control arrangement 22 can be placed symmetrically around the geometric axis of the cutting portion A.
    [00063] It should be noted that an aspect of the subject of the present application is that the chip control arrangement 22 is effective for thread cutting operations.
    [00064] It should also be noted that another aspect of the subject of this application is that the chip control arrangement 22 is effective at different depths of cut.
    [00065] Another aspect of the subject of the present application is that the chip control arrangement 22 is effective for both cutting methods, both radial and flank feed.
    [00066] It should be understood that the chip control arrangement 22 according to the subject of the present application can be free of additional elements to achieve the desired chip control.
    [00067] Described differently, a chip control arrangement according to the subject matter of the present application may comprise only a) the plurality of recesses 50 extending downwards to the inclined surface 28 which follows a pattern of increasing depth in a backward direction DR from the forward portion 25 of the cutting edge 26 and b) the plurality of projections 52 extending upwardly from the inclined surface 28 following an increasing height pattern in a backward direction DR from the portion forward 25 of the cutting edge 26. In other words, the chip control arrangement can be devoid of any additional recesses and / or projections.
    [00068] Although the subject matter of the present application has been described to a certain degree of particularity, it should be understood that several changes and modifications could be made without departing from the spirit or scope of the invention as claimed hereinafter.
    权利要求:
    Claims (15)
    [0001]
    1. Cutting insert (20), comprising: a cutting portion (24) that has a cutting axis geometry (A) that defines a direction from front to back (DF, DR), the cutting portion (24 ) comprising a cutting edge (26) formed at an intersection of an inclined surface (28) and a raised surface (30), the cutting edge (26) having a forward portion (25); and, a chip control arrangement (22) located on the inclined surface (28); the chip control arrangement (22) comprising: a plurality of recesses (50, 74) extending downwardly to the inclined surface (28); and, a plurality of projections (52, 72) extending upwards from the inclined surface (28); wherein: the plurality of recesses (50, 74) follows a pattern of increasing depth in the backward direction (DR) from the forward portion of the cutting edge (26); and, the plurality of projections (52, 72) follows a pattern of increasing height in the backward direction (DR) from the forward portion of the cutting edge (26), characterized by the fact that: the plurality of recesses (50, 74) is arranged in rows of recesses (54, 56, 58, 60, 84), each recess row (54) extending in a recess plane (PR) that is perpendicular to the geometric axis (A) of the cutting portion ; and each recess (50, 74) of a first recess row (56) has a first recess depth (DEI) of magnitude less than a second recess depth (DE2) of each recess (50, 74) of a second adjacent recess row (58) which is axially further from the cutting edge (26) than the first recess row (56).
    [0002]
    2. Cutting insert (20) according to claim 1, characterized in that the first recess row (56), which is axially closest to the cutting edge (26), comprises exactly one recess (50), preferably each row of recesses (58, 60, 84), unlike the first row of recesses (56), comprises exactly two recesses (50).
    [0003]
    Cutting insert (20) according to claim 1, characterized by the fact that a distance of the recess row (Dl, D2) between adjacent pairs of recess rows (54, 56, 58, 60, 84) increases in the backward direction (DR).
    [0004]
    4. Cutting insert (20) according to claim 1, characterized in that the outermost recesses (50) in each recess row (54, 56, 58, 60, 84), on at least one side of the geometric axis (A) of the cutting portion, are located along a straight path (P) in a plan view of the cutting portion (24); and, the straight path (P) and the cutting edge (26) are parallel in a plan view of the cutting portion (24).
    [0005]
    Cutting insert (20) according to claim 1, characterized in that the second recess row (58) is located in front of a more rear portion of the cutting edge (26).
    [0006]
    6. Cutting insert (20) according to claim 1, characterized by the fact that the plurality of projections (52) are arranged in projection rows (62, 66, 68, 80), each projection row (62, 66, 68, 80) extending in a projection plane (Pp) that is perpendicular to the geometric axis (A) of the cutting portion, and each projection (52, 72) of a first projection row (66) has a first projection height (HEI) of magnitude less than a second projection height (HEZ) of each projection (52, 72) of a second adjacent projection row (68) which is axially further from the cutting edge (26) of the than the first projection row (66).
    [0007]
    Cutting insert (20) according to claim 6, characterized in that each projection row (62, 66, 68, 80) is located between an adjacent pair of recess rows (54).
    [0008]
    Cutting insert (20) according to claim 7, characterized in that two outer recesses (50) on the same side of the geometric axis (A) of the cutting portion in adjacent recess rows (54) are interposed , at least partially, by one of the plurality of projections (52).
    [0009]
    Cutting insert (20) according to claim 6, characterized in that the first projection row (66), which is axially the closest to the cutting edge (26), comprises exactly one projection (52) , preferably each projection row (68, 80) different from the first projection row (66) comprises exactly two projections (52).
    [0010]
    Cutting insert (20) according to claim 6, characterized in that the chip control arrangement (22) still comprises an axial ridge (76) which extends axially from a further projection ( 72) in the backward direction (DR).
    [0011]
    11. Cutting insert (20) according to claim 10, characterized in that the chip control arrangement (22) still comprises two central convex ridges (78) extending from each outermost projection (52 ) in a second forward projection row (80) to a rear portion of the axial ridge (76), respectively.
    [0012]
    Cutting insert (20) according to claim 6, characterized in that the chip control arrangement (22) still comprises an elongated nose (82) that extends in a forward direction (DF) and located between the outermost recesses (50) in the outermost recess row (84).
    [0013]
    13. Cutting insert (20) according to claim 12, characterized by the fact that it still comprises two transverse convex ridges (86) that extend between each outermost projection (52) in a second forward projection row ( 80) and a forward portion of the elongated nose (82), respectively.
    [0014]
    14. Cutting insert (20) according to claim 1, characterized in that the projection towards the front (72) is located axially behind the recess towards the front (74).
    [0015]
    15. Cutting insert (20) according to claim 1, characterized in that the chip control arrangement (22) still comprises an inclined surface (88), which extends upwards, which generally turns in the direction forward (DF) and is located behind the rearmost recess row (84).
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2020-02-04| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-07-07| B09A| Decision: intention to grant|
    2020-09-15| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/04/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/471671|2012-05-15|
    US13/471,671|US8939684B2|2012-05-15|2012-05-15|Cutting insert with chip-control arrangement having recess depths and projection heights which increase with distance from cutting edge|
    PCT/IL2013/050346|WO2013171734A1|2012-05-15|2013-04-22|Cutting insert with chip-control arrangement|
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