cutting tool with adjustable insert cutting angle, and method for increasing or decreasing an insert

专利摘要:
CUTTING TOOL WITH ADJUSTABLE INSERT CUTTING ANGLE, AND, METHOD FOR INCREASING OR REDUCING AN INSERT CUTTING ANGLE. A cutting tool with an adjustable insert cutting angle (20) comprising a tool holder (24) having a cartridge receiving cavity (32), an insert cartridge (22) clamped in the cartridge receiving cavity (32) by a clamping element (26), and a cutting insert (28) removably retained in the insert cartridge (22). The clamping element (26) is operated by a separate clamping element (36). The cutting insert (28) has at least one operative cutting portion (30), and the insert cartridge (22) is oriented in a cartridge receiving cavity (32) of the tool holder (24) so that the operative cutting portion (30) meets a workpiece (34) at an insert cutting angle (al). The clamping element (26) has a clamping surface (52) with at least one clamping zone (Czl), and the same clamping zone (Czl) makes contact with a non-planar clamped surface (54) of the insert cartridge (22) for different values of insert cutting angle (al). The insert cutting angle (al) is increased or decreased when reorienting the (...) cartridge.
公开号:BR112016018519B1
申请号:R112016018519-6
申请日:2015-01-27
公开日:2021-01-26
发明作者:Alexander Sashin
申请人:Iscar Ltd.；
IPC主号:

专利说明:

FIELD OF THE INVENTION
[001] The present invention relates to an adjustable cutting tool for use in metal cutting processes in general, and for chamfering operations in particular. BACKGROUND OF THE INVENTION
[002] In the field of cutting tools used in chamfering operations, chamfering tools with a pivot-mounted cutting insert are known both on a rotatable cylindrical shank and on a stationary square shank, capable of cutting a workpiece in one range of chamfer angles.
[003] DE 4419668 describes a milling tool, particularly for chamfering at different chamfered angles, with a basic cylindrical body with a cavity in an end portion thereof to receive an insert cartridge. A cutting insert is mounted on the insert cartridge and fixed inside the cavity by a fixing screw that extends through a through hole in the insert cartridge and engages a threaded hole in the cavity. Two retaining screws connect the insert cartridge to a block, which is slidable along an arcuate notch in the cavity. The insert cartridge can be manually pivoted around the geometric axis of the fixing screw to a selected chamfered angle, before the fixing screw and the two retaining screws are tightened to provide three-point fixation.
[004] US 5,913,643 describes a end mill body connected to the end of a rotatable cylindrical shank, the end mill body having a substantially radial oriented wall, and a mounting assembly for pivoting a pivot insert. cut in the wall in such a way that a forward angle of the linear cutting edge of the cutting insert is angularly adjustable with respect to the outer periphery of the end mill body. The mounting set includes a plate-shaped insert cartridge with a cavity to receive the cutting insert and a pin to pivot the insert cartridge to the wall, and a locking screw to secure the insert cartridge in one position pivoted selected. The locking screw serves both as a fastener that makes direct contact with the cartridge and as a fastener that threadedly engages the radially oriented wall to retain the cartridge.
[005] It is an objective of the present invention to provide an improved adjustable cutting tool.
[006] It is also an objective of the present invention to provide an adjustable cutting tool with a stable and reproducible adjustment device.
[007] It is an additional objective of the present invention to provide an adjustable cutting tool capable of performing chamfering operations over a wide range of chamfer angles.
[008] It is also an additional objective of the present invention to provide an adjustable cutting tool capable of chamfering holes of relatively small diameter.
[009] And yet an additional objective of the present invention is to provide an adjustable cutting tool with an adjustment device convenient for the operator. SUMMARY OF THE INVENTION
[0010] According to the present invention, a cutting tool with an adjustable insert cutting angle is provided comprising: a tool holder with a cartridge receiving cavity, an insert cartridge pressed into the cartridge receiving cavity by a clamping element operated by a separate fastener, and a cutting insert removably retained in the insert cartridge, the cutting insert having at least one operative cutting portion, the insert cartridge oriented in the cartridge receiving cavity so that the operating cutting portion of the cutting insert encounters a workpiece at an insert cutting angle, in which the clamping element has a clamping surface that makes contact with a tight non-planar surface of the insert cartridge, in that the insert cutting angle is increased or decreased by reorienting the insert cartridge in the tool holder, after releasing the fastener, and where the surface of the insert rto has at least one clamping zone, and the same at least one clamping zone makes contact with the clamped surface for different values of insert cutting angle.
[0011] Also according to the present invention, a method of increasing or decreasing an insert cutting angle of a cutting tool in relation to a workpiece is provided, the cutting tool comprising: an insert cartridge tightened in a tool holder by a clamping element, and a cutting insert removably retained in the insert cartridge, the clamping element having a clamping surface that makes contact with a tight non-planar surface of the insert cartridge, the clamping element clamping operated by a separate fastening element, the clamping surface having at least one clamping zone, and the same clamping zone having contact with the clamped surface for different values of insert cutting angle, the cutting insert having at least a cutting portion, and the insert cartridge oriented in a cartridge receiving cavity of the tool holder so that the operative cutting portion meets a workpiece in the â insert cutting angle, the method comprising the steps of: releasing the fastener, reorienting the insert cartridge in the cartridge receiving cavity, and refixing the fastener. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] For a better understanding, the invention will now be described, by way of example only, with reference to the accompanying drawings, in which dashed lines represent cut-out contours for partial views of an element and in which: figure 1 is a view in perspective of a cutting tool according to some embodiments of the present invention; figure 2 is an exploded view of the cutting tool shown in figure 1; figure 3 is a top view of the cutting tool shown in figure 1, engaging a workpiece; figure 4 is a cross-sectional view of the cutting tool shown in figure 3, taken along line 1V-IV; figure 5 is a detailed view of the cutting tool shown in figure 4; figure 6 is a base view of a clamping element according to some embodiments of the present invention, in relation to a vertical first plane of the cutting tool; figure 7 is a top view of the cutting tool shown in figure 1, with the clamping element, and a fixing element removed; figure 8 is a top view of a tool holder according to some embodiments of the present invention; and figure 9 is a base view of an insert cartridge according to some embodiments of the present invention, in relation to the first vertical plane of the cutting tool. DETAILED DESCRIPTION OF THE INVENTION
[0013] Attention first turns to figures 1 and 2, showing a cutting tool 20 according to some modalities of the present invention. The cutting tool 20 includes an insert cartridge 22 fastened to a tool holder 24 by a clamping element 26, and a cutting insert 28 removably retained in the insert cartridge 22.
[0014] Insert cartridge 22 and cutting insert 28 are collectively referred to as a cutting unit 23. In some embodiments of cutting unit 23, discussed further below, cutting insert 28 is removably retained in the cartridge insert 22 by a retaining screw 48. In some embodiments, the cutting insert 28 is removably retained in the insert cartridge 22 by brazing.
[0015] The cutting insert 28 has at least one cutting portion 30 and can be manufactured by pressing and sintering a cemented carbide, such as tungsten carbide, and can be coated or uncoated.
[0016] As shown in figure 3, the insert cartridge 22 is oriented in a cartridge receiving cavity 32 of the tool holder 24 so that the operative cutting portion 30 meets a workpiece 34 at a cutting angle of insert there.
[0017] The clamping element 26 is operated by a separate clamping element 36, and the insert cutting angle al is increased or decreased by reorienting the insert cartridge 22 in the tool holder 24, after releasing the clamping element 36 .
[0018] In some embodiments of the present invention, the insert cutting angle may be increased or decreased only after the release of the fastener 36, and a single fastener 36 can be used to operate the fastener 26, thus providing an efficient and convenient cutting tool for the operator 20.
[0019] Also, in some embodiments of the present invention, visual indicators and / or mechanical detectors in the insert cartridge 22 can be employed to define different staggered increases or decreases in the insert cut-off angle, and thus assist the operator.
[0020] Additionally, in some embodiments of the present invention, the insert cutting angle may have an adjustment range of at least 60 degrees.
[0021] Also additionally, in some embodiments of the present invention, the release of the fastening element 36 does not require its removal from the cutting tool 20, and the insert cutting angle al can be increased or decreased without removing any component from the cutting tool. cut 20.
[0022] A method of increasing or decreasing the insert cutting angle in addition to the cutting tool 20 comprises the steps of: releasing the fixing element 36, reorienting the insert cartridge 22 in the cartridge receiving cavity 32, and retightening the fastener 36.
[0023] In some embodiments of the present invention, the insert cartridge 22 can be manually reoriented by the operator.
[0024] Also, in some embodiments of the invention, the fastening element 36 may be the only element to be released and tightened to increase or decrease the cutting angle of an insert.
[0025] As shown in figure 4, in a cross section of the cutting tool 20 made in a vertical foreground PV1, the insert cartridge 22 has opposing upper and lower surfaces 38, 40 generally facing in the up and down directions U, D, respectively, and a peripheral surface 42 extending between them.
[0026] In some embodiments of the present invention, reorientation of the insert cartridge 22 in the cartridge receiving cavity 32 can be done by rotating the insert cartridge 22 about a pivot geometric axis Al.
[0027] Also, in some embodiments of the present invention, the pivot geometric axis Al can be in a fixed position in relation to the tool holder 24.
[0028] The pivot geometric axis Al maintains its fixed position in relation to the tool holder 24 during reorientation of the insert cartridge 22, due to the clamping element 26 and the cartridge receiving cavity 32 limiting the freedom of movement of the cartridge insert only to the rotation around the pivot geometric axis Al, after fractional release of the fixing element 36.
[0029] The pivot geometric axis Al can be contained in the vertical foreground PV1.
[0030] In some embodiments of the present invention, the first vertical plane PV1 can intercept the upper and lower surfaces 38, 40 of the insert cartridge 22.
[0031] Also, in some embodiments of the present invention, the clamping element 26 can be located in an identical position with respect to the tool holder 24 for different values of insert cutting angle al.
[0032] In addition, in some embodiments of the present invention, the clamping element 26 can be located in an identical position with respect to the tool holder 24 for the entire adjustment range of the insert cutting angle.
[0033] As shown in figure 3, the tool holder 24 can extend along a longitudinal geometric axis L in a front to back direction F, R, and the cartridge receiving cavity 32 can open to one end front 44 of the tool holder 24.
[0034] In some embodiments of the present invention, the longitudinal geometric axis L can be transverse to the up and down directions U, D.
[0035] Also, in some embodiments of the present invention, toolholder 24 may have a axis of rotation A2 coaxial with the longitudinal axis of axis L, and toolholder 24 may be rotatable around the axis of rotation A2 .
[0036] In addition, in some embodiments of the present invention, the insert cutting angle 1 may be a chamfer angle formed between a machined surface of the workpiece 34 and a lateral plane PL1 perpendicular to the axis of rotation A2, with a between 10 and 80 degrees.
[0037] As shown in figures 2, 4 and 5, the cutting insert 28 can be removably retained in an insert receiving cavity 46 of the insert cartridge 22 by a retaining screw 48, and the retaining screw 48 a threaded retaining hole 50 can be threadedly engaged in the receiving cavity of insert 46.
[0038] In some embodiments of the present invention, the insert receiving cavity 46 can be formed at the intersection of the upper and peripheral surfaces 38, 42 of the insert cartridge 22.
[0039] Also, in some embodiments of the present invention, the threaded retention hole 50 may have a geometry axis of the retention hole A3 parallel to the pivot geometry axis Al.
[0040] Additionally, in some embodiments of the present invention, the pivot geometric axis Al may intercept the insert receiving cavity 46.
[0041] In addition, in some embodiments of the present invention, the retaining screw 48 may engage the tool holder 24 in a non-threaded manner.
[0042] Configuring the cutting tool 20 in such a way that the retaining screw 48 threadably engages the insert cartridge 22 and not the tool holder 24 advantageously allows the cutting insert 28 to protrude beyond the front end 44 of the tool holder 24 with sufficient relief to perform a wide range of machining operations, including, for example, chamfering of holes with relatively small diameters.
[0043] As shown in figures 4 and 5, the clamping element 26 has a clamping surface 52 which makes contact with a tight non-planar surface 54 of the insert cartridge 22.
[0044] In some embodiments of the present invention, the tight non-planar surface 54 can be formed on the upper surface 38 of the insert cartridge 22.
[0045] As shown in figure 6, the clamping surface 52 has at least one clamping zone Czl, and the same at least one clamping zone Czl makes contact with the clamped surface 54 for different insert cutting angle values. .
[0046] In some embodiments of the present invention, the same at least one clamping zone Czl can make contact with the clamped surface 54 throughout the adjustment range of the insert cutting angle.
[0047] Configuring the cutting tool 20 in such a way that it at least one clamping zone Czl makes contact with the clamped surface 54 throughout the adjustment range of the insert cutting angle beneficially results in highly reproducible clamping of the cartridge insert 22.
[0048] In some embodiments of the present invention, as shown in figure 6, at least one clamping zone Czl may have specular symmetry around the first vertical plane PV1.
[0049] Also, in some embodiments of the present invention, the clamping surface 52 may have exactly one clamping zone Czl.
[0050] As shown in figures 5 and 7, a horizontal foreground PH1 perpendicular to the pivot geometric axis Al can intercept the tightened surface 54 to form the arc of a first circular sector SI with a first radius of sector R1, and the first sector circular SI can have a first central point Cl contained in the pivot geometric axis Al.
[0051] In some embodiments of the present invention, the tightened surface 54 may have an arc shape when viewed along the pivot geometric axis A1.
[0052] Also, in some embodiments of the present invention, the first circular sector SI can subtend a first sector angle βl, and the first sector angle βl may have a value greater than 120 degrees.
[0053] Additionally, in some embodiments of the present invention, the arc of the first circular sector SI may have at least a portion of the clamping arc 56 coinciding with at least one clamping zone Czl, and at least a portion of the clamping arch 56 it can have an angular clamping extension EI around the pivot geometric axis Al with a value greater than 20 degrees.
[0054] It should be seen from the detailed description and claims that the extension of angular support El is measured between the two most widely spaced points along at least a portion of the clamping arc 56.
[0055] As shown in figure 7, the peripheral surface 42 of the insert cartridge 22 may have a non-planar support surface 58 that makes contact with a surface of the side wall 60 of the cartridge receiving cavity 32.
[0056] In some embodiments of the present invention, as shown in figure 8, the surface of the side wall 60 can have at least one support zone Azl, Az2, and the support surface 58 can make contact with it at least one zone support Azl, Az2 by different values of insertion cutting angle al.
[0057] Also, in some embodiments of the present invention, the support surface 58 can make contact with it at least one support zone Azl, Az2 throughout the range of adjustment of the insert cutting angle.
[0058] Setting the cutting tool 20 in such a way that the support surface 58 makes contact with it at least one support zone Azl, Az2 throughout the adjustment range of the insert cutting angle, beneficially results in highly tightening the reproducible part of the insert cartridge 22.
[0059] In some embodiments of the present invention, as shown in figure 8, at least one support zone Azl, Az2 may have specular symmetry around the first vertical plane PV1.
[0060] Configuring at least one clamping zone Czl and at least one support zone Azl, Az2 to present specular symmetry around the vertical foreground PV1 advantageously results in a highly stable clamping arrangement.
[0061] In some embodiments of the present invention, the side wall surface 60 may have exactly two spaced support zones Azl, Az2.
[0062] In other embodiments of the present invention (not shown), the surface of the side wall 60 can have exactly one support zone.
[0063] The side wall surface 60 with exactly two spaced support zones Azl, Az2 improves the manufacturing efficiency of the cutting tool and results in highly reproducible tightening of the insert cartridge 22.
[0064] As shown in figures 5 and 7, a horizontal PH2 horizontal plane perpendicular to the pivot geometric axis Al can intersect the support surface 58 to form the arc of a second circular sector S2 with a second radius of sector R2, and the second circular sector S2 can have a second central point C2 contained in the pivot geometry axis Al.
[0065] In some embodiments of the present invention, the support surface 58 may have an arc shape when viewed along the pivot geometric axis Al.
[0066] Also, in some embodiments of the present invention, the second circular sector S2 may subtend a second sector angle β2, and the second sector angle β2 may have a value greater than 120 degrees
[0067] Additionally, in some embodiments of the present invention, the arc of the second circular sector S2 may have at least a portion of the support arch 62a, 62b coinciding with at least one support zone Azl, Az2, and at least a portion of the support arch 62a, 62b may have an angular support extension E2 around the pivot geometric axis Al with a value greater than 50 degrees.
[0068] It should be noted by the detailed description and claims that the extent of angular support E2 is measured between the two most widely spaced points along at least a portion of the support arch 62a, 62b collectively.
[0069] In some embodiments of the present invention, the second horizontal plane PH2 can be located above the first horizontal plane PH1, and at least a portion of the support arch 62a, 62b can be located above at least a portion of the arch tightening torque 56.
[0070] The side wall surface 60 with exactly two spaced support zones Azl, Az2 is especially beneficial with respect to manufacturing efficiency and reproducible clamping, for cutting tools configured with the angle support extension E2 with a value greater than 50 degrees.
[0071] As shown in figure 5, the bottom surface 40 of the insert cartridge 22 may have a first planar base surface 64 that makes contact with a seat surface 66 of the cartridge receiving cavity 32, and the seat surface 66 it can be transverse to the surface of the side wall 60.
[0072] In some embodiments of the present invention, the first base surface 64 may be perpendicular to the pivot geometric axis Al.
[0073] Also, in some embodiments of the present invention, the first base surface 64 can make contact with a single protruding planar support portion 68 of the seat surface 66.
[0074] Additionally, in some embodiments of the present invention, the bottom surface 40 may include a second non-planar base surface 70 that makes contact with the seat surface 66.
[0075] As shown in figure 8, the seat surface 66 can include at least one support zone Szl, Sz2, and the second base surface 70, can make contact with it at least one support zone Szl, Sz2 for different insertion cutting angle values al.
[0076] In some embodiments of the present invention, the second base surface 70 can make contact with it at least one support zone Szl, Sz2 over the entire adjustment range of the insert cutting angle.
[0077] Also, in some embodiments of the present invention, as shown in figure 8, at least one support zone Szl, Sz2 can have specular symmetry around the first vertical plane PV1.
[0078] Additionally, in some embodiments of the present invention, the seat surface 66 can have exactly two spaced support zones Szl, Sz2.
[0079] The seat surface 66 with the single protruding planar support portion 68 and exactly two spaced support zones Szl, Sz2 advantageously provides three-point support for the bottom surface of the insert cartridge 40 and thus a highly stable seat arrangement .
[0080] As shown in figures 5 and 9, a third horizontal plane PH3 perpendicular to the pivot geometric axis Al can intercept the second base surface 70 to form the arc of a third circular sector S3 with a third radius of sector R3, and the third circular sector S3 may have a third central point C3 contained in the pivot geometric axis Al.
[0081] In some embodiments of the present invention, the second base surface 70 may have an arc shape when viewed along the pivot geometric axis A1.
[0082] Also, in some embodiments of the present invention, the second circular sector S3 may subtend a second sector angle β3, and the second sector angle β3 may have a value greater than 120 degrees.
[0083] Additionally, in some embodiments of the present invention, the third radius of sector R3 may be greater than the first radius of sector R1.
[0084] Also in addition, in some embodiments of the present invention, the arc of the third circular sector S3 may have at least one support arc portion 72a, 72b coinciding with at least one support zone Szl, Sz2, and at least a portion support arc 72a, 72b may have an angular support extension E3 around the pivot geometric axis Al with a value greater than 30 degrees.
[0085] It should be noted by the detailed description and claims that the extension of the angular support E3 is measured between the two most spaced points along at least a portion of support arch 72a, 72b collectively.
[0086] As shown in figures 4 and 5, the second base surface 70 and the tightened surface 54 can form a profile in the form of a swallowtail.
[0087] In some embodiments of the present invention, as shown in figure 7, each of at least a cutting portion 30 may include a linear cutting edge 74, and the operating linear cutting edge 74 may have an edge point 76 located at a minimum distance from the DMIN edge of the pivot geometric axis Al, and the second radius of sector R2 can be greater than the minimum distance from the DMIN edge.
[0088] Setting the second radius of sector R2 to be greater than the minimum distance from the DMIN edge advantageously limits the degree of spatial movement of the operating linear cutting edge 74 in relation to the cartridge receiving cavity 32 in the angle adjustment range insert cutter, thus allowing the cutting tool 20 to carry out a wide range of machining operations, including, for example, chamfering of holes with relatively small diameters.
[0089] As shown in figure 5, a first imaginary straight line LI coincident or tangential to the tightened surface 54 can intersect the pivot geometric axis Al at a first intersection point N1.
[0090] In some embodiments of the present invention, the first intersection point N1 can be located below the tightened surface 54.
[0091] Also, in some embodiments of the present invention, the first imaginary straight line LI can form a first acute angle δl with the pivot geometric axis Al, and the first acute angle δl can have a value between 55 and 85 degrees.
[0092] It should be noted that, for modalities of the present invention where the first acute angle δl has a value between 55 and 85 degrees, clamping forces are directed to maintain stable contact between the lower and peripheral surfaces 40, 42 of the cartridge insert 22 and the seat and side wall surfaces 66, 60 of the cartridge receiving cavity 32, respectively, in a wide range of machining operations, exclusively by the clamping element 26.
[0093] As shown in figure 4, the fastening element 36 can engage the fastening element 26 in a non-threaded manner.
[0094] In some embodiments of the present invention, the clamping element 26 may have a clamping surface 78 that makes contact with a planar fixed surface 80 of the tool holder 24.
[0095] Also, in some embodiments of the present invention, the clamping element 26 may be of unitary construction in one piece.
[0096] Additionally, in some embodiments of the present invention, the fixed surface 80 may be adjacent to the surface of the sidewall 60.
[0097] As shown in figure 5, a second imaginary straight line L2 coinciding with the fixed surface 80 can intersect the pivot geometric axis Al at a second intersection point N2.
[0098] In some embodiments of the present invention, the second intersection point N2 can be located above the fixed surface 80.
[0099] Also, in some embodiments of the present invention, the second imaginary straight line L2 can form a second acute angle δ2 with the pivot geometric axis Al, and the second acute angle δ2 can have a value between 60 and 80 degrees.
[00100] It should be noted that, for modalities of the present invention where the second acute angle δ2 has a value between 60 and 80 degrees, clamping forces are directed to maintain even more stable contact between the lower and peripheral surfaces 40, 42 of the insert cartridge 22 and the seat and side wall surfaces 66, 60 of the cartridge receiving cavity 32, respectively, with a wide range of machining operations.
[00101] As shown in figure 4, the fastener 36 may not engage the insert cartridge 22.
[00102] Also, as shown in figures 1 and 3, the fixing element 36 can be a fixing screw.
[00103] In some embodiments of the present invention, the fixing screw may be accessible in a direction transverse to the longitudinal geometric axis L
[00104] As shown in figures 4 and 6, the clamping element 26 can have a through hole 82 intercepting the fixing surface 78, and the fixing screw can extend through the through hole 82 and thread a threaded hole. threaded fastening 84 on the fastened surface 80. The fastening hole 84 can have a geometric axis of the fastening hole A4.
[00105] In some embodiments of the present invention, the geometric axis of the fixing hole A4 can be contained in the first vertical plane PV1.
[00106] Also, in some embodiments of the present invention, the geometric axis of the fixing hole A4 can be non-perpendicular to the fixed surface 80.
[00107] Additionally, in some embodiments of the present invention, the geometric axis of the fixing hole A4 may not intercept the insert cartridge 22.
[00108] Also in addition, in some embodiments of the present invention, the geometric axis of the fixing hole A4 can be parallel to the pivot geometric axis Al.
[00109] Although the present invention has been described with a certain degree of particularity, it should be understood that various changes and modifications could be made without departing from the spirit or scope of the invention in the manner claimed below.

权利要求:
Claims (13)
[0001]
1. Cutting tool with adjustable insert cutting angle (20), comprising: a tool holder (24) with a cartridge receiving cavity (32), an insert cartridge (22) clamped in the cartridge receiving cavity (32) by a clamping element (26) operated by a single separate fastening element (36), and a cutting insert (28) removably retained in the insert cartridge (22), the cutting insert having at least an operative cutting portion (30), the insert cartridge (22) oriented in the cartridge receiving cavity (32) so that the operative cutting portion (30) meets a workpiece (34) at a cutting angle insert (α1), in which the clamping element (26) has a clamping surface (52) that makes contact with a tight non-planar surface (54) of the insert cartridge (22), characterized by the fact that: o insert cutting angle (α1) is increased or decreased by reorienting the insert cartridge (22) in the tool holder (24) , after releasing the fastener (36), and the clamping surface (52) has at least one clamping zone (Cz1), and the same at least one clamping zone (Cz1) makes contact with the clamped surface ( 54) for different values of insert cutting angle (α1); and where the insert cartridge (22) has opposing upper and lower surfaces (38, 40) generally facing up and down (U, D), respectively, and a peripheral surface (42) extending between them ; the peripheral surface (42) has a non-planar support surface (58) which makes contact with a side wall surface (60) of the cartridge receiving cavity (32); 1. side wall surface (60) has at least one support zone (Azl, Az2), and 2. support surface (58) makes contact with it at least one support zone (Azl, Az2) for different values insert cutting angle (α1).
[0002]
2. Cutting tool (20) according to claim 1, characterized in that the reorientation of the insert cartridge (22) in the cartridge receiving cavity (32) is done by rotating the insert cartridge (22) around of a pivot geometry axis (A1), and the pivot geometry axis (A1) is contained in a vertical foreground (PV1).
[0003]
Cutting tool (20) according to claim 2, characterized by the fact that the pivot geometric axis (A1) is in a fixed position in relation to the tool holder (24).
[0004]
4. Cutting tool (20) according to claim 2, characterized by the fact that at least one clamping zone (Cz1) has specular symmetry around the first vertical plane (PV1).
[0005]
5. Cutting tool (20) according to claim 2, characterized by the fact that a horizontal foreground (PH1) perpendicular to the pivot geometric axis (A1) intersects the tight surface (54) to form the arc of a first sector circular (S1) with a first sector radius (R1), and the first circular sector (S1) has a first central point (C1) contained in the pivot geometric axis (A1).
[0006]
Cutting tool (20) according to claim 1, characterized in that the tight non-planar surface (54) is formed on the upper surface (38).
[0007]
7. Cutting tool (20) according to claim 2, characterized by the fact that at least one support zone (Azl, Az2) has specular symmetry around the first vertical plane (PV1).
[0008]
8. Cutting tool (20) according to claim 2, characterized by the fact that a second horizontal plane (PH2) perpendicular to the pivot geometric axis (A1) intersects the support surface (58) to form the arc of one second circular sector (S2) with a second sector radius (R2), and the second circular sector (S2) has a second central point (C2) contained in the pivot geometric axis (A1).
[0009]
Cutting tool (20) according to claim 2, characterized in that the clamping element (26) has a fixing surface (78) which makes contact with a planar fixed surface (80) of the tool holder (24), and, in a cross section of the cutting tool (20) made in the first vertical plane (PV1), a second imaginary straight line (L2) coinciding with the fixed surface (80) intersects the pivot geometric axis (A1) at a second intersection point (N2), where the second intersection point (N2) is located above the fixed surface (80).
[0010]
Cutting tool (20) according to claim 9, characterized in that: the clamping element (26) has a through hole (82) intercepting the fixing surface (78); the fixing element (36) is a fixing screw; and, the fixing screw extends through the through hole (82) and threadedly engages a threaded fixing hole (84) on the fixed surface (80), the fixing hole (84) having a geometric axis of the fixing hole (A4) contained in the first vertical plane (PV1).
[0011]
11. Cutting tool (20) according to claim 1, characterized by the fact that the insert cutting angle (α1) is increased or decreased only after the release of the fastener (36).
[0012]
12. Method for increasing or decreasing an insert cutting angle (αl) of a cutting tool (20) in relation to a workpiece (34), the cutting tool (20) comprising: an insert cartridge (22 ) clamped in a tool holder (24) by a clamping element (26), and a cutting insert (28) removably retained in the insert cartridge (22), the clamping element (26) having a surface of clamping (52) making contact with a tight non-planar surface (54) of the insert holder (24), the clamping element (26) operated by a separate fastening element (36), the clamping surface (52) having at least one clamping zone (Cz1), and the same at least one clamping zone (Cz1) making contact with the clamped surface (54) for different values of insert cutting angle (αl), the cutting insert (28 ) having at least a working cutting portion (30), and the insert cartridge (22) oriented in a cartridge receiving cavity (32) of the tool holder (24) so that the operating cutting portion (30) meets a workpiece (34) at the insert cutting angle (αl), the method being characterized by the fact that it comprises the steps of: releasing the fastening element (36), reorient the insert cartridge (22) in the cartridge receiving cavity (32), and retighten the fastener (36); wherein a peripheral surface (42) of the insert cartridge (22) has a non-planar support surface (58) that makes contact with a side wall surface (60) of the cartridge receiving cavity (32); the side wall surface (60) has at least one support zone (Azl, Az2), and the support surface (58) makes contact with it at least one support zone (Azl, Az2) for different angle values insert cut (α1).
[0013]
Method according to claim 12, characterized in that: the insert cartridge (22) has opposite upper and lower surfaces (38, 40) and a peripheral surface (42) extending between them; and the tight non-planar surface (54) is formed on the upper surface (38).

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JP2016539010A|2016-12-15|Positionable milling insert with side support indentation and milling tool

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JP6395842B2|2018-09-26|Indexable central drill insert and cutting tool

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US9931698B2|2018-04-03|Cutting insert for threading, tool body and cutting tool

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CA3025203C|2021-01-19|Cutting insert for a milling tool and milling tool

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CA2842280C|2016-08-09|Adjustable cutting tool

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JPWO2016093275A1|2017-06-29|Cutting inserts, tool bodies and cutting tools

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KR20220006516A|2022-01-17|Indexable cutting insert with two cutting sections located in diagonally opposite quadrants and two lower adjacent elements and cutting tools

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JP2017221982A|2017-12-21|Tip exchange type cutting tool holder and tip exchange type cutting tool

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US20150336177A1|2015-11-26|Diamond tip cutting tool

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TW201701972A|2017-01-16|Rhombus-shaped reversible cutting insert and support seat therefor

同族专利:

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公开号 | 公开日

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RU2697118C2|2019-08-12|

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KR102189150B1|2020-12-10|

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CA2937737A1|2015-08-27|

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US9216458B2|2015-12-22|

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IL246522D0|2016-08-31|

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US20150231705A1|2015-08-20|

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IL246522A|2020-01-30|

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RU2016137154A|2018-03-22|

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JP2017506164A|2017-03-02|

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JP6546600B2|2019-07-17|

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CN105992665A|2016-10-05|

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WO2015125130A1|2015-08-27|

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KR20160117481A|2016-10-10|

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CN105992665B|2018-07-10|

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EP3107675A1|2016-12-28|

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CA2937737C|2021-12-28|

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RU2016137154A3|2018-10-01|

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法律状态:
2018-10-30| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-02-18| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-01-05| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2021-01-26| 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 27/01/2015, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US14/184,431|US9216458B2|2014-02-19|2014-02-19|Cutting tool having adjustable insert cutting angle|

---

US14/184,431|2014-02-19|

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PCT/IL2015/050095|WO2015125130A1|2014-02-19|2015-01-27|Cutting tool having adjustable insert cutting angle|

---