• 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:
    FINISHING DEPTH TURNING INSERT A finishing depth turning insert (10) includes a chip control arrangement (20). The chip control arrangement includes an intermediate protrusion (34) for intermediate depth machining operations and a finishing protuberance (36) for finishing depth machining operations. The finishing protuberance is located between the intermediate protuberance and a corner (18) of the insert. The finishing protuberance also includes a front finishing deflector (58) and first (62A) and second (62B) relief surfaces extending to the intermediate protuberance from the front finishing deflector surface.
    公开号:BR112016005461B1
    申请号:R112016005461-0
    申请日:2014-07-03
    公开日:2021-01-19
    发明作者:Daniel Hen；Shinya MAJIMA
    申请人:Iscar Ltd.；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The subject of the present application refers to an insert for machining operations, in particular a turning insert comprising a chip control arrangement for machining operations of finishing depth. BACKGROUND OF THE INVENTION
    [002] Among the numerous publications that refer to turning inserts and chip control arrangements therein, US 4,941,780 describes a series of notable chip control arrangements designed to provide a configured insert for depth machining operations. intermediate and coarse finishing.
    [003] In this application, finishing machining operations are considered to have a depth of cut between 0.3 mm and 2.0 mm, intermediate machining operations having a depth greater than 2.0 mm and less than 4 , 0 mm and coarse machining operations having a depth greater than 4.0 mm.
    [004] Unlike US 4,941,780, the subject of the present application is designed specifically for finishing depth machining operations with additional elements for incidental overlap in the adjacent intermediate depth range (ie up to 3.0 mm). depth).
    [005] It is an object of the present invention to provide a new and improved chip control arrangement. SUMMARY OF THE INVENTION
    [006] The chip control arrangement according to the subject of the present application was developed to provide relatively long tool life and good burring performance in the finishing depth range and in the adjacent intermediate depth range, for machining stainless steel in particular.
    [007] According to a first aspect of the subject matter of the present application, a finishing depth turning insert comprising a chip control arrangement is provided; the chip control arrangement comprising an intermediate protrusion (that is, a protuberance configured to control chips in intermediate depth machining operations) and a finishing protuberance (that is, a protuberance configured to control chips in depth machining operations) finish) located between the intermediate protuberance and a corner. The finishing protuberance also includes a front finishing deflector surface and first and second relief surfaces extending to the intermediate protuberance from the front finishing deflector surface.
    [008] According to another aspect of the subject matter of the present application, a finishing depth turning insert is provided comprising: first and second opposing surfaces that define a reference plane located between them and extending parallel to them; a peripheral surface extending peripherally connected to the first and second surfaces; a first corner defining, on the first surface, a radius of the corner; a cutting edge formed between the first surface and the peripheral surface, and extending along the first corner as well as the first and second edge portions connected to and extending from different sides of the first corner; and a chip control arrangement formed on the first surface; the reference plane defining: an upward direction directed perpendicularly from the reference plane to the first surface; a downward direction opposite to the upward direction; and a bisector plane perpendicular to the reference plane and bisecting the first corner; the bisector plane defining an inward direction directed into the insert and parallel to the reference plane; the chip control arrangement being symmetrical around the bisector plane, and comprising: an intermediate protuberance; and a finishing protuberance located between the intermediate protuberance and the first corner; the intermediate protuberance comprising: first and second intermediate deflecting surfaces facing respectively the first and the second edge portions; and an intermediate upper surface connected to the first and second intermediate deflecting surfaces and being located further away from the reference plane than the cutting edge; the finishing protuberance comprising: a front finishing deflector surface; a rear surface extending to the intermediate protuberance; first and second relief surfaces extending from the front finishing deflector surface to the rear surface, and respectively facing the first and second edge portions; and a finishing peak connected to the front finishing deflector surface, the rear surface and the first and second relief surfaces, and located closer to the reference plane than the cutting edge.
    [009] It will be understood that although each element in a chip control arrangement provides a desirable function, it was subsequently verified to the design and test of several different conceptions that certain characteristics in the above aspects may have contributed to obtain the best results for life overall tool in the finishing depth range along with excellent burring performance.
    [0010] In particular, without being limited by theory, it is believed that the combination of providing a finishing protuberance (the extra material increasing the structural strength and thus reducing the formation of chips on the cutting edges adjacent to them ) together with its lateral embossed surfaces ("embossed surfaces") (the reduced material providing sufficient space for the cutting edges adjacent to it) was significant in obtaining the superior results of this design over the other tested designs.
    [0011] It will be understood that the above is a summary, and that any of the above aspects may still comprise any of the characteristics described here below. Specifically, the following characteristics, either alone or in combination, can be applicable to any of the above: A. An insert can comprise first and second opposing surfaces. The first and second surfaces can be parallel to each other. The insert may comprise a peripheral surface extending peripherally connected to the first and second surfaces. B. The first and second surfaces of an insert can define reference plane PR located between them and extending parallel to them. The reference plane can define: an upward direction directed perpendicularly from the reference plane to the first surface; a downward direction opposite to the upward direction; and a bisector plane perpendicular to the reference plane and bisecting the corner. The reference plane can be located halfway between the first and second surfaces. C. An insert can comprise a corner by defining, on a first surface, a radius of the corner. D. A cutting edge can be formed between a first surface and a peripheral surface. E. A cutting edge can extend along a corner as well as first and second edge portions connected to and extending from different sides of the corner. F. Each of the first and second edge portions can be formed with a concave recess. The concave recess can be configured to direct chips to the finishing and / or intermediate protuberances. Referred differently, the concave recess can be configured to separate chips from a workpiece. G. A bisector plane can define an inward direction directed to an insert and parallel to a reference plane. A chip control arrangement can be symmetrical around the bisector plane. H. An insert can comprise a chip control arrangement. The chip control arrangement can be formed on a first surface of the insert. There may be another chip control arrangement according to the subject of the present order formed in each corner of the insert on the first surface or in each corner of the insert on both the first and second surfaces of the same. I. A chip control arrangement may comprise an intermediate protuberance; and a finishing protuberance located between the intermediate protuberance and a corner. J. An intermediate protuberance can taper to a finishing protuberance. In a plan view of the upper intermediate surface, the intermediate protuberance can taper to the finishing protuberance. In addition, in this view, the intermediate protrusion may comprise straight or concave edges. Such a shape can be beneficial in providing more space for clipping between the intermediate protuberance and the cutting edge. K. An intermediate protrusion may comprise first and second intermediate deflecting surfaces facing the first and second edge portions, respectively. L. An intermediate protrusion may comprise an upper intermediate surface connected to the first and second intermediate deflecting surfaces and being located further away from the reference plane than the cutting edge. In embodiments where the insert is double-sided, the upper intermediate surface may form a part of a supporting surface. The support surface can extend over a large part of the first surface. The supporting surface may comprise curved portions adjacent to each negative edge. M. An intermediate protuberance may comprise a frontal intermediate deflector surface. The front intermediate deflector surface can extend in upward and inward directions to the upper intermediate surface. N. An intermediate protrusion may comprise an intermediate protrusion tip. O. A finishing protuberance may comprise a front finishing deflector surface. Q. A finishing bump can comprise first and second raised surfaces. The first and second relief surfaces can extend from a front-facing deflector surface to a rear surface. The first and second relief surfaces can respectively face the first and second edge portions. Each relief surface can be flat or convex in a section taken perpendicular to an associated edge portion. In a section taken perpendicular to an associated edge portion, each relief surface can be connected between a concave shaped shoulder and a finishing peak. Q. A finishing protuberance may comprise a rear surface extending from a finishing peak to an intermediate protuberance. A. A finishing bump can comprise a finishing spike. The finishing peak can be connected to a front finishing deflector surface, a rear surface and the first and second relief surfaces of the finishing protuberance. Differently referred to, the finishing protuberance may have a pyramidal shape. The finishing peak can be located closer to the reference plane than the cutting edge. S. Along a bisector plane, a chip control arrangement can define a shoulder connected to the cutting edge and extending from it to a chute. A chute for the purposes of the specification and claims means a lower point. The shoulder may extend along the length of the cutting edge with a geometry similar to that along the bisector plane. Along the bisector plane, the shoulder may extend from a cutting edge in downward and inward directions to a chute. Without being limited by theory, it is believed that the immediate downward and inward inclination of the ledge (that is, without a neutral ledge first extending parallel to a reference plane and subsequently descending in the downward and inward directions) can be beneficial in improving burr performance. Throughout an entire cutting edge, the shoulder may extend from the cutting edge in downward and inward directions to the chute. T. A front-facing deflector surface can be connected to a chute within a distance of less than twice the corner radius from a corner intersection of the bisector plane and the cutting edge. Preferably, the front finishing deflector surface can be connected to the rail within a single radius of the corner from the intersection. The best experimental results were obtained when a total of a connection of the front finishing deflector surface with the chute is within a single radius distance from the corner from the intersection. U. Along a bisector plane, a front finish deflector surface can extend from a chute to a finish peak in or inward direction only or in both inward and upward directions. Without being bound by theory, it is believed that the front-facing deflector surface extending in both inward and upward directions can provide better performance than just inward direction. V. A deflector surface with a front finish can be flat. W. First and second relief surfaces can be located further away from the cutting edge than the front-facing deflector surface. X. The distance between each of the first and second relief surfaces and the cutting edge adjacent to them (for example, a distance between the first relief surface and the first edge portion of the cutting edge) may increase with increasing the distance between the front-facing deflector surface and said each of the first and second relief surfaces. Y. First and second relief surfaces can be elongated in shape. Z. In a plan view of a first surface (for example, Fig. 2 or 4A), the first and second relief surfaces can both be located between the bisector plane and a respective relief plane. Each relief plane can be perpendicular to a reference plane and passing through a corner intersection of the bisector plane and the cutting edge. Each relief plane may form a smaller relief angle with the bisector plane than an edge angle formed between the bisector plane and an edge plane extending perpendicular to an associated edge portion. In a plan view of the first surface, the first and second relief surfaces can both be located between the bisector plane and a respective relief plane. Each relief plane is perpendicular to the reference plane and passes through a corner intersection of the bisector plane and the cutting edge. Each relief plane may form a smaller relief angle with the bisector plane than an edge angle formed between the bisector plane and an edge plane extending perpendicular to an associated edge portion. Relief angles between 15 ° and 45 ° are believed to be feasible and relief angles between 20 ° and 30 ° are believed to provide the best results. AA. Along a bisector plane, an angle of inclination (that is, measured between a shoulder and a reference plane PR) can be between 5 ° and 25 °. The angle of inclination along the entire cutting edge can be between 5 ° and 25 °. Preferably, the angle of inclination in the bisector plane and / or along the entire cutting edge can be between 12 ° and 20 °. In view of experimental results, it is believed that the most preferred range for the angle of inclination in the bisector plane and / or along the entire cutting edge is between 12 ° and 20 °. It will be understood that while this latter strip can provide the best results for burr performance, it will result in unacceptable performance if used in a coarse depth machining operation. An increasing positive rake angle can be beneficial for shallow depth machining, but detrimental for greater depths. For example, a 5 ° tilt angle can provide acceptable results for intermediate and finishing depth operations, but poor results for coarse depth operations, and a 12 ° tilt angle has been found to provide even better results for operations in finishing depth up to intermediate but can be expected to result in unacceptable performance if used in a coarse depth operation. The aforementioned angle of inclination can be along the entire cutting edge. 88. An insert can comprise an additional corner adjacent to another corner and formed with an additional cutting edge. The insert may further comprise an edge of negative inclination angle formed along a first surface and a peripheral surface and between cutting edges of the corners. Referenced differently, there may be a negative tilt angle edge connecting two edge portions of an insert. It will be understood that although such a negative tilt angle edge can be beneficial in reducing chip hammering, this feature can make the insert perform unacceptably if used in a coarse depth operation. CC. An insert can comprise first and second intermediate guide surfaces connected to an intermediate protrusion and extending from it in the downward direction as well as respectively to first and second edge portions (for example, the first intermediate guide surface extending down and to the first edge portion). Each of the first and second intermediate guide surfaces can be part of a respective first and second guide protrusion. Each guide protuberance may comprise a tip (or "guide protuberance tip"). Each intermediate guide surface may be a surface of a wedge-shaped guide protrusion. Each guide protuberance may comprise a guide peak. Each intermediate guide surface can extend downward from an associated guide peak. DD. To avoid redirecting chips back to a workpiece from which they come, each of the first and second intermediate guide surfaces can be spaced from an edge portion adjacent to it. More precisely, each guide protrusion point and the intermediate protrusion point can be spaced from the same edge portion by equal distances. AND IS. A guide protrusion tip and intermediate protrusion point are spaced from the same adjacent edge portion by equal distances. FF. A distance D1 is defined from a corner intersection of a bisector plane and a cutting edge to one of the first and second intermediate guide surfaces, and a distance D2 is defined from the same corner intersection to a point the closest on the front intermediate deflector surface 42. The distance Dl is between three and five times the distance D2 (3 ^ D2 <Dl <5 ^ D2). GG. A distance D3 is defined from a corner intersection of a bisector plane and a cutting edge to one of the first and second intermediate guide surfaces, measured parallel to an associated edge portion, and a parallel distance D4 is defined as the total length of an insert edge between adjacent to these corner intersections. Preferably 1/8 ^ D4 <D3 <1/3 ^ D4. BRIEF DESCRIPTION OF THE DRAWINGS
    [0012] For a better understanding of the subject of the present application, and to show how it can be carried out in practice, reference will now be made to the attached drawings, in which: Fig. 1 is a top perspective view of an insert. in accordance with the subject matter of this application; Fig. 2 is a plan view of a first surface of the insert in Fig. 1; Fig. 3 is a cross-sectional view taken along line 3-3 in Fig. 2; Fig. 4A is an enlarged view of a portion located in a lower left part of the insert in Fig. 2; Fig. 4B is a top perspective view of the portion in Fig. 4A; Fig. 5A is a schematic cross-section of the first surface taken along line 5A in Fig. 2; Fig. 5B is a schematic cross-section of the first surface taken along line 5B in Fig. 2; Fig. 5C is a schematic cross-section of the first surface taken along line 5C in Fig. 2; and Fig. 6 is a photograph of experimental results. DETAILED DESCRIPTION
    [0013] Reference is made to Figs. 1 to 3, illustrating a finishing depth turning insert 10 for machining operations. Insert 10 is typically made of extremely hard and wear-resistant material such as cemented carbide, either by pressing into shape and then sintering carbide powders in a binder or by powder injection molding methods.
    [0014] As best shown in Fig. 3, the insert 10 can comprise first and second opposing surfaces 12, 14 and a peripheral surface extending peripherally 16 connected to the first and second surfaces 12, 14. The first and second surfaces 12, 14 can define a reference plane PR located halfway between them and extending parallel to them.
    [0015] The reference plane PR can define an upward direction DU directed perpendicularly from the reference plane PR to the first surface 12; and a downward direction, DD, opposite the upward direction DU. It will be understood that the reference plane PR is used merely to define the orientation of the up and down directions DU, DD and does not represent a starting point for them.
    [0016] Insert 10 comprises at least one corner 18A, 18B, 18C, 18D.
    [0017] The insert 10 comprises at least one chip control arrangement 20 associated with the corner 18A and the first surface 12. Unless otherwise stated, the following description will only be directed to a chip control arrangement (i.e. ie, the arrangement designated with the number "20"), however, it will be understood that each corner of the insert 10, on one or both of the first and second surfaces 12, 14, may have a corresponding chip control arrangement. In any case, in the present example, insert 10 has a corresponding chip control arrangement on each corner of it and on both the first and second surfaces of each corner, that is, eight of such arrangements. It will also be understood that the first surface 12 (and the second surface 14 in the example shown) is an inclined surface, on which chips (not shown) cut from a cut (not shown) workpiece flow. It will be understood that the peripheral surface 16 constitutes a relief surface of the insert 10.
    [0018] With reference to Fig. 4A, corner 18A can define a radius of corner RC more precisely, the radius of corner RC is a radius of an inscribed circle C1 of corner 18A in a plan view of the first surface 12.
    [0019] In Fig. 2, a bisector plane PB is shown which is perpendicular to the reference plane PR and which bisects corner 18A (that is, divides corner 18A into equal halves). The chip control arrangement 20 can preferably be symmetrical about the bisector plane PB.
    [0020] The bisector plane PB defines an inward direction DI (Figs. 2, 3) which is directed inwardly to insert 10 and is parallel to the reference plane PR.
    [0021] With reference also to Fig. 4B, a cutting edge 22 is formed between the first surface 12 and the peripheral surface 16. more precisely, the cutting edge 22 can comprise first and second cutting edges 22A, 22B respectively located along first and second edge portions 24A, 24B, and a third cutting edge 22C extending along the corner 18A and connected to the first and second cutting edges 22A, 22B. First and second connection points 26A, 26B (Fig. 4A) of the third cutting sub-edge 22C and first and second cutting sub-edges 22A, 22B are located where the curvature of corner 18A over transition to (in a plan view of the first surface) first and second straight edge portions 24A, 24B.
    [0022] Corresponding characteristics of different corners are identified with a common reference character and have a suffix of one or more apostrophes (for example, a second cutting edge of corner 18B is designated as 22B ').
    [0023] Drawing attention to Fig. 1, between adjacent corners, for example the designated corners 18A and 18B, there may be an edge of negative slope angle 28 formed on the first surface 12 and on the peripheral surface 16 and between the cutting edges 22A, 22B 'of the corners 18 A, 18B.
    [0024] Each cutting edge 22 can end at a point spaced from the negative slope angle edge 28.
    [0025] Along each of the first and second edge portions 24A, 24B, a concave recess 30A, 30B can be formed in a side view or a side perspective view (Fig. 4B).
    [0026] Insert 10 can be configured to be attached to a tool via a screw (not shown), for example being formed with a through hole 32. Through hole 32 can be located in the center of insert 10. The through hole 32 it can open to the first and second surfaces 10, 12.
    [0027] An insert axis AI can extend through the center of insert 10. The insert axis AI can extend through the center of through hole 32. The insert axis AI can be perpendicular to the reference plane PR.
    [0028] With reference to Fig. 1, the chip control arrangement 20 may comprise an intermediate protrusion 34 and a finishing protuberance 36 located between the intermediate protuberance 34 and the corner 18 A. The chip control arrangement 20 can also comprise first and second intermediate guide surfaces 36A, 36B.
    [0029] The intermediate protuberance 34 can be configured to control chips (not shown) during cutting operations at intermediate depth. The first and second intermediate guide surfaces 36A, 36B can be configured to guide chips during intermediate depth cutting operations to the intermediate protrusion 34.
    [0030] Similarly, the finishing protuberance 36 can be configured to control chips (not shown) during cutting operations at finishing depth.
    [0031] The intermediate protrusion 34 may comprise first and second intermediate deflecting surfaces 38 A, 38B, respectively facing the first and second edge portions 24A, 24B, an upper intermediate surface 40 connected to the first and second intermediate deflecting surfaces 38 A, 38B, and a front intermediate deflector surface 42.
    [0032] As best shown in Fig. 2, the intermediate protuberance 34 can taper to the finishing protuberance 36.
    [0033] An arrow 41 indicates a region where the intermediate protuberance 34 has a slight concavity.
    [0034] In the present example, as the insert 10 is double-sided, the intermediate upper surface 40 can form a part of a support surface 44 for mounting the insert 10 on a tool (not shown). More specifically, the insert 10 can be configured to mount it only via the support surface 44. Consequently, the support surface 44 can be ground. The support surface 44 can extend over a greater part of the first surface 12. In order to increase the mounting area of the support surface 44, it can also comprise bulged portions 46 adjacent to each negative edge 28.
    [0035] The first and second intermediate guide surfaces 36A, 36B can be connected to the intermediate protuberance 34 and can extend from it in the downward direction DD as well as respectively for the first and second edge portions 22A, 22B. The first intermediate guide surface 36A can face the second edge portion 24B, and the second intermediate guide surface 36B can face the first edge portion 24A.
    [0036] Each intermediate guide surface 36A, 36B can be a wedge-shaped guide protrusion surface 48A, 48B. Each guide protrusion 48A, 48B can further comprise a guide peak 50A, 50B.
    [0037] To avoid redirecting chips back to a workpiece from which they come, each of the first and second intermediate guide surfaces 36A, 36B can be spaced from the corresponding edge portion 24A, 24B adjacent to it . Preferably, each end (i.e., first or second guide ends 52A, 52B, Fig. 2) of the guide protrusions 48A, 48B may be spaced from the edge portion adjacent to it at the same distance i and an intermediate point 54 (Fig. 4A) of the intermediate protrusion 34, to allow a chip to reach both ends, for example 52A, 54, at about the same time. Referenced differently, it can be seen, for example, in Fig. 2, that a first spacing distance LI (from the intermediate point 54 to the first edge portion 24A) is of the same magnitude as the second distance from spacing L2 (from the first guide point 52A to the first edge portion 24A).
    [0038] The first and second intermediate guide surfaces 36A, 36B are at a distance Dl (Fig. 2) from a corner intersection 56 of the bisector plane PB and the cutting edge 22. A point closest to a point closest to the front intermediate deflecting surface 42 can be at a distance D2 (Fig. 4A) from the corner intersection 56. The magnitude of the distance Dl is preferably between three and five times the distance D2 (3-D2 <Dl <5-D2).
    [0039] A distance D3 (referring to corner 18B in Fig. 2, for ease of visibility only) is defined from the associated corner intersection 56 'to the first associated guide surface 36A', which is measured parallel to the associated edge portion 24B '. A parallel distance D4 is defined as the total length of an edge of the insert between adjacent corner intersections 56, 56 '(ie bisector intersections and cutting edges. Preferably 1/8 <D4 <D3 <1/3 ^ D4 It will be understood that reducing the distance of a guide surface from a corner, compared to the total length of the insert side, can allow more area to be designed as part of a supporting surface and can therefore contribute to the stability of the insert.
    [0040] Drawing attention to Figs. 4A and 4B, the finishing protuberance 36 may comprise a front finishing deflector surface 58, a rear surface 60, first and second relief surfaces 62A, 62B extending from the front finishing deflector surface 58 to the rear surface 60 , and a finishing peak 64.
    [0041] The chip control arrangement 20 can further define a shoulder 66 connected to the cutting edge 22 and extending from it to a rail 68.
    [0042] The front finish baffle surface 58 can be connected to the rail 68. The front finish baffle surface 58 connection can be from the first and second bottom ends 70 A, 70B of the front finish baffle surface 58 and along a deflecting lower edge with a front finish 70C extending between the first and second lower ends 70A, 70B.
    [0043] The rear surface 60 can extend from the finishing peak 64 to the intermediate protuberance 34. More precisely, the rear surface 60 can extend to the front intermediate deflector surface 42.
    [0044] The first and second relief surfaces 62A, 62B can extend from the front finishing deflector surface 58 to the rear surface 60, and can respectively face the first and second edge portions 24A, 24B. It will be understood that when the relief surfaces are said to "face" the edge portions, this means that in a plan view, using the first relief surface 62A as an example, the first relief surface 62A is facing for the first edge portion 24A, that is, generally in the direction of arrow 72. To elaborate, whether or not there is curvature of the relief surfaces, for example by directing arrow 72 in a three-dimensional direction "above" the first edge portion 24A (that is, off the page in Fig. 4A), this is still considered to be facing the first edge portion 24A (that is, in plan view). A surface facing the direction of arrow 74, that is, the third cutting edge 22C, for example formed on a convex shape or otherwise not in relief (that is, in plan view) will not be considered as facing a portion of the edge. Such convex or non-embossed shapes can unduly reduce the area between the first edge portion 24A and the finishing protuberance 36, thus resulting in less effective machining.
    [0045] However, in a cross-sectional view, or in a side perspective similar to that shown in Fig. 4B, each relief surface 62A, 62B can be flat or convex in shape.
    [0046] Each relief surface 62A, 62B can be connected between a concave shaped shoulder 76A, 76B and the finishing peak 64.
    [0047] The relief surfaces 62A, 62B can be located further away than the front finish baffle surface 58 from the cutting edge 22. For example, the first lower end 70A is shown to be at a distance 78A from from the cutting edge 22, while each following distance from the first relief surface 62A to the cutting edge 22 (designated 78B, 78C and 78D) is shown to be progressively greater in magnitude and all are greater than the distance 78A.
    [0048] In a plan view of a first surface (for example, Fig. 2, relating to the chip control arrangement in the corner 18D for ease of visibility only), the first and second relief surfaces 62A ", 62B" both can be located between the bisector plane PB ”and a respective relief plane PR”. The relief plane PR "can be perpendicular to the reference plane PR and passes through a corner intersection 56" of the bisector plane PB "and the cutting edge 22". The relief plane PR ”can also pass through the outermost point of the front finishing deflector surface 58", (for example, the first lower end 70A "). Each relief plane PR ”can form a smaller relief angle α" with the bisector plane PB "than an edge angle β" formed between the bisector plane PB "and an edge plane PE" extending perpendicular to a portion associated edge 24A ".
    [0049] With reference to Fig. 5A, which shows a section along the bisector plane PB, there are also shown first and second parallel planes PP1, PP2, which are parallel to the reference plane PR. More precisely, the first parallel plane PP1 intersects the third cutting sub-edge 22C and the second parallel plane PP2 intercepts the upper intermediate surface 40.
    [0050] Starting from the third cutting sub-edge 22C, the shoulder 66 extends downwards and inwards DI; DU to track 68. Referenced differently, the third cutting sub-edge 22C has a positive slope angle. Better performance was seen with the shoulder extending in these directions than with a shoulder that first extends parallel to the first parallel plane PP1 and then subsequently tilts in the downward and inward directions DI; DU. The entire cutting edge 22 has a positive angle of inclination. Preferred values for the angle of inclination AR1 in the bisector is 15 °, in a section of 0.5 mm (AR2, Fig. 5B) is 13 ° and in a section of 1.5 mm (AR3, Fig. 5C) is 16 °. These points are noteworthy, as they correspond to the desired depths of cut for the insert 10. As mentioned above, spaced 1.5 mm section distances do not have to have a positive tilt angle as they are not intended to be used for machining and can even be negative for different benefits.
    [0051] The front finishing deflector surface 58 can extend from the rail 68 to the finishing peak 64 in both inward and upward directions D1; DU as shown. It is noted that even if the front finish baffle surface 58 will only extend in the inward direction D1; there may still be a finishing peak as the other areas adjacent to the peak may be lower than the gutter 68.
    [0052] With reference to Fig. 6, chips produced from experimental results of an insert according to the subject of the present application are shown.
    [0053] The horizontal axis shows feed rate (f) at 0.05; 0.08; 0.1; 0.15; 0.2 and 0.3 millimeters per revolution (mm / rev).
    [0054] The vertical axis shows depth of cut (Ap) at 0.15; 0.3; 0.5; 1; 1.5; 2 and 3 millimeters.
    [0055] Although not shown, the low burr Ap (0.5 mm) was also documented after 8, 16, 24 and 32 minutes of machining.
    [0056] As shown by the dotted line, the target performance area was for a feed rate of 0.08 to 0.2 mm / rev at a depth of 0.3 to 1.5 mm.
    [0057] The experiment was carried out under the following conditions (working material: SUS316L, Vc = 150 m / min, wet, CNMG 431 designation, success criterion: chip length L <100mm).
    [0058] As shown in Fig. 6, appropriately sized chips were produced even outside the desired range (encompassed by the dotted line), as shown within the thick continuous line, that is, slightly within the adjacent intermediate depth range.
    [0059] Among the various designs developed and parallel tests of an insert from an industry-leading competitor, the chip control arrangement 20 of this order produced the best overall results of the tool life and burring at Ap = 0.5 mm and 1.5 mm.
    权利要求:
    Claims (15)
    [0001]
    1. Finishing depth turning insert (10), comprising: first and second opposing surfaces (12, 14) that define a reference plane (PR) located between them and extending parallel to it; a peripheral surface (16) extending peripherally connected to the first and second surfaces (12, 14); a first corner (18) defining, on the first surface (12), a radius of the corner (RC); a cutting edge (22) formed between the first surface (12) and the peripheral surface (16), and extending along the first corner (18A) as well as the first and second edge portions (24A, 24B) connected to and extending from different sides of the first corner (18); and, a chip control arrangement (20) formed on the first surface (12); the reference plane (PR) defining: an upward direction (DU) directed perpendicularly from the reference plane (PR) to the first surface (12); a downward direction (DD) opposite the upward direction (DU); and, a bisector plane (PB) perpendicular to the reference plane (PR) and bisecting the first corner (18); the bisector plane (PB) defining: an inward direction (DI) directed into the insert (10) and parallel to the reference plane (PR); the chip control arrangement (20) being symmetrical around the bisector plane (PB) and comprising: an intermediate protuberance (34); and, a finishing protuberance (36) located between the intermediate protuberance (34) and the first corner (18); the intermediate protuberance (34) comprising: first and second intermediate deflecting surfaces (38A, 38B) respectively facing the first and second edge portions (24A, 24B); and, an intermediate upper surface (40) connected to the first and second intermediate deflecting surfaces (38A, 38B) and being located further away from the reference plane (PR) than the cutting edge (22); the finishing protuberance (36) comprising: a front finishing deflector surface (58); a rear surface (60) extending to the intermediate protuberance (34); first and second relief surfaces (62A, 62B) extending from the front finishing deflector surface (58) to the rear surface (60), and respectively facing the first and second edge portions (24A, 24B); and, a finishing peak (64) connected to the front finishing deflector surface (58), the rear surface (60) and the first and second relief surfaces (62A, 62B), and located closer to the reference plane (PR ) than the cutting edge (22), characterized by the fact that: the front finishing deflector surface (58) is flat.
    [0002]
    2. Insert (10) according to claim 1, characterized by the fact that: along the bisector plane (PB), the chip control arrangement (20) further defines a shoulder (66) connected to the cutting edge ( 22) and extending from it to a rail (68); and, the front finishing deflector surface (58) is connected to the rail (68) within a distance of less than twice the corner radius (RC) from a corner intersection (56) of the bisector plane (PB) ) and the cutting edge (22); and, along the bisector plane (PB), the front finishing deflector surface (58) extends from the rail (68) to the finishing peak (64) or just the inward direction (DI) or both the directions, inward and upward (DI, DU).
    [0003]
    3. Insert (10) according to claim 2, characterized by the fact that the front finishing deflector surface (58) is connected to the rail (68) within a distance of a single radius of the corner (RC) from the corner intersection (56).
    [0004]
    Insert (10) according to either of claims 2 or 3, characterized in that the entire connection of the front finishing deflector surface (58) to the rail (68) is within a distance of a single radius of the corner (RC) from the corner intersection (56).
    [0005]
    5. Insert (10) according to any one of claims 2 to 4, characterized by the fact that, along the bisector plane (PB), the shoulder (66) extends from the cutting edge (22) in the downward and inward directions (DD, DI) to the rail (68).
    [0006]
    6. Insert (10) according to claim 5, characterized by the fact that, along the bisector plane (PB), the angle of inclination (AR) is between 5 ° and 25 °, preferably the angle of inclination (AR ) along the entire cutting edge is between 5 ° and 25 °.
    [0007]
    Insert (10) according to any one of claims 1 to 6, characterized in that the first and second relief surfaces (62A, 62B) are located further away from the cutting edge (22) than the surface front finish baffle (58).
    [0008]
    8. Insert (10) according to claim 7, characterized by the fact that a distance between each of the first and second relief surfaces (62A, 62B) and the cutting edge (22) adjacent to them increases with the increasing distance between the front finishing deflector surface (58) and each one between the first and second relief surfaces (62A, 62B).
    [0009]
    Insert (10) according to any one of claims 1 to 8, characterized in that the first and second relief surfaces (62A, 62B) have an elongated shape.
    [0010]
    10. Insert (10) according to any one of claims 1 to 9, characterized in that, in a plan view of the first surface (12), the first and second relief surfaces (62A, 62B) are both located between the bisector plane (PB ”) and a respective relief plane (PR”), each relief plane (PR ”) being perpendicular to the reference plane (PR) and passing through a corner intersection (56) of the plane bisector (PB ”) and cutting edge (22), each relief plane (PR”) forming a relief angle (α ”) with the bisector plane (PB”) less than an edge angle (β ”) formed between the bisector plane (PB ”) and an edge plane (PE”) extending perpendicular to an associated edge portion (24A ”).
    [0011]
    11. Insert (10) according to any one of claims 1 to 10, characterized in that the finishing protuberance (36) has a pyramidal shape.
    [0012]
    Insert (10) according to any one of claims 1 to 11, characterized in that it further comprises a second corner (18B) adjacent to the first corner (18A) and formed with a second cutting edge, the insert (10 ) further comprising a negative angle angle edge (28) formed along the first surface (12) and the peripheral surface (16) between said cutting edge (22) and the additional second cutting edge.
    [0013]
    13. Insert (10) according to any one of claims 1 to 12, characterized in that it also comprises first and second intermediate guide surfaces (36A, 36B) connected to the intermediate protuberance (34) and extending from the downwards (DD), as well as respectively for the first and second edge portions (24A, 24B).
    [0014]
    14. Insert (10) according to any one of claims 1 to 13, characterized in that, in a plan view of the upper intermediate surface (40), the intermediate protuberance (34) tapers towards the finishing protuberance ( 36), preferably the intermediate protuberance (34) comprises both straight edges and concave edges.
    [0015]
    15. Insert (10) according to any one of claims 1 to 14, characterized in that each of the first and second edge portions (24A, 24B) is formed with a concave recess.
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    同族专利:
    公开号 | 公开日
    EP3046705B1|2017-08-23|
    US9409237B2|2016-08-09|
    CN105517739B|2018-04-03|
    WO2015036990A1|2015-03-19|
    KR20160055801A|2016-05-18|
    CA2924416A1|2015-03-19|
    JP6479019B2|2019-03-06|
    RU2659550C2|2018-07-02|
    EP3046705A1|2016-07-27|
    KR102177973B1|2020-11-13|
    RU2016114539A3|2018-04-28|
    CN105517739A|2016-04-20|
    PL3046705T3|2017-12-29|
    PT3046705T|2017-10-03|
    CA2924416C|2020-07-28|
    ES2643818T3|2017-11-24|
    US20150078844A1|2015-03-19|
    RU2016114539A|2017-10-23|
    JP2016530116A|2016-09-29|
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    法律状态:
    2019-12-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-09-08| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2021-01-05| B09A| Decision: intention to grant|
    2021-01-19| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 03/07/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US14/028,263|US9409237B2|2013-09-16|2013-09-16|Finish depth turning insert comprising a chip control arrangement|
    US14/028,263|2013-09-16|
    PCT/IL2014/050596|WO2015036990A1|2013-09-16|2014-07-03|Finish depth turning insert comprising a chip control arrangement|
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