WO2016098829A1 - 切削インサート、切削工具及び切削加工物の製造方法 - Google Patents
切削インサート、切削工具及び切削加工物の製造方法 Download PDFInfo
- Publication number
- WO2016098829A1 WO2016098829A1 PCT/JP2015/085273 JP2015085273W WO2016098829A1 WO 2016098829 A1 WO2016098829 A1 WO 2016098829A1 JP 2015085273 W JP2015085273 W JP 2015085273W WO 2016098829 A1 WO2016098829 A1 WO 2016098829A1
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- WIPO (PCT)
- Prior art keywords
- cutting
- main body
- body member
- insert
- cutting edge
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/202—Plate-like cutting inserts with special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
- B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts
- B23C5/2213—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts having a special shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
- B23C2200/0433—Parallelogram
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/20—Top or side views of the cutting edge
- B23C2200/208—Wiper, i.e. an auxiliary cutting edge to improve surface finish
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/36—Other features of the milling insert not covered by B23C2200/04 - B23C2200/32
- B23C2200/367—Mounted tangentially, i.e. where the rake face is not the face with largest area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/31—Diamond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/31—Diamond
- B23C2226/315—Diamond polycrystalline [PCD]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/06—Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
Definitions
- This aspect relates to a cutting insert, a cutting tool, and a manufacturing method of a cut workpiece.
- Patent Document 1 As a cutting insert used when milling a work material such as metal, a throw-away tip described in JP-A-2003-231015 (Patent Document 1) is known.
- the throw-away tip described in Patent Document 1 is composed of a throw-away tip body (main body member) and a diamond tip (cutting blade member) made of a sintered body such as cemented carbide or ceramics.
- a recess is formed at the intersection of the side flank and the front flank on the rake face of the throw-away tip body, and the tip is brazed to the recess.
- the outer peripheral cutting edge and the bottom cutting edge are formed on the diamond tip, that is, the outer peripheral cutting edge and the bottom cutting edge are formed of diamond, thereby increasing the strength of the cutting edge.
- a through hole is formed from the rake face located in the forward direction of the throw-away tip to the rear face in the rotational direction, and the throw-away tip is rotated by inserting a clamp screw member into the through-hole. Mounted on the cutting tool body (holder).
- This aspect provides a cutting insert having good durability when constituted by a main body member and a cutting blade member.
- a cutting insert according to an aspect is located at a corner of the outer peripheral surface of the main body member, and a main body member that is an upper surface, a lower surface, and a columnar body having an outer peripheral surface between the upper surface and the lower surface. One surface is exposed, a cutting member having a cutting edge at a portion where two surfaces of the surfaces intersect, and the main body member has a through-hole penetrating the upper surface and the lower surface ing.
- region A2 shown in FIG. It is a perspective view which shows the cutting insert of one Embodiment. It is a top view of the cutting insert shown in FIG. It is a bottom view of the cutting insert shown in FIG. It is a side view of the cutting insert shown in FIG. It is the side view which looked at the cutting insert shown in FIG. 9 from A3 direction.
- the cutting tool 101 of this embodiment includes a holder 103, a plurality of cutting inserts 1 (hereinafter also referred to as inserts 1), and screws 105, as shown in FIGS.
- the holder 103 has a rotation axis O1.
- the holder 103 is a columnar member that extends from the front end side toward the rear end side along the rotation axis O1 when the side where the insert 1 is located is the front end side and the opposite side of the front end side is the rear end side. It is.
- the holder 103 rotates about the rotation axis O1 around the rotation axis O1 in the rotation direction X1.
- the center axis of the holder 103 that is a cylindrical body and the rotation axis O ⁇ b> 1 of the holder 103 coincide with each other.
- the side closer to the rotation axis O1 is defined as the inner circumference side
- the side far from the rotation axis O1 is defined as the outer circumference side.
- a direction from the rear end side of the holder 103 toward the front end side is defined as a front end direction
- a direction from the front end side of the holder 103 toward the rear end side is defined as a rear end direction.
- the holder 103 steel, cast iron, aluminum alloy or the like can be used. In the cutting tool 101 of this embodiment, steel with high toughness is used among these members.
- the size of the holder 103 is appropriately set according to the size of the work material. For example, the length in the direction along the rotation axis O1 is set to about 30 to 90 mm. The width (diameter) in the direction orthogonal to the rotation axis O1 is set to about 20 to 500 mm.
- a plurality of insert pockets 107 are located on the outer peripheral side of the tip end side of the holder 103.
- the pocket 107 is a portion to which the insert 1 is mounted, and is open to the outer peripheral side on the distal end side of the holder 103 before the insert 1 is mounted.
- the plurality of pockets 107 may be provided at regular intervals or at irregular intervals so as to be rotationally symmetric around the rotation axis O1. In order to suppress variations in the load applied to the insert 1 attached to each pocket 107, it is preferable that the intervals are equal.
- the shape is not a strict cylindrical body.
- the insert 1 attached to the pocket 107 is fixed to the holder 103 with a screw 105.
- FIG. 4 an example is shown in which eight pockets 107 are provided in the holder 103 and the inserts 1 are respectively located in the eight pockets 107.
- the number of pockets 107 and the number of inserts 1 attached to the holder 103 are not limited to eight. Even if these numbers are two, three, four, five, six, ten or more, for example, there is no problem.
- the insert 1 in this embodiment is constituted by a main body member 3 and a cutting member 5 as shown in FIGS. 6 to 10, and is a columnar body as a whole.
- the main body member 3 is a columnar body, and the main body member 3 in the present embodiment is a quadrangular columnar body.
- the main body member 3 has an upper surface 7, a lower surface 9 and an outer peripheral surface 11.
- the outer peripheral surface 11 is located between the upper surface 7 and the lower surface 9.
- the cutting member 5 is located at the corner of the outer peripheral surface 11 of the main body member 3. In other words, the cutting member 5 is located in the recess 13 provided at the corner of the outer peripheral surface 11 of the main body member 3. Therefore, the insert 1 in this embodiment is a columnar body as a whole.
- the cutting member 5 is fixed to the main body member 3.
- the cutting member 5 is joined to the main body member 3 using a brazing material or the like.
- hatching by hatching is added to the portion of the cutting member 5 in FIGS.
- the cutting member 5 is a part having a cutting edge 15 for cutting a work material and a part having high hardness in order to obtain a cutting edge 15 having high strength in the insert 1.
- the cutting edge 15 in this embodiment is not located in the main body member 3 but is located in the cutting member 5.
- the main body member 3 is a base portion in the insert 1, and when selecting a material constituting the main body member 3, it is not necessary that the hardness is equal to or higher than that of the cutting member 3.
- the insert 1 is comprised by the main body member 3 and the cutting member 5, the manufacturing cost of the insert 1 can be held down, raising the intensity
- Examples of the material of the member constituting the main body member 3 include cemented carbide or cermet.
- Examples of the composition of the cemented carbide include WC—Co, WC—TiC—Co, and WC—TiC—TaC—Co.
- WC—Co is produced by adding cobalt (Co) powder to tungsten carbide (WC) and sintering.
- WC—TiC—Co is obtained by adding titanium carbide (TiC) to WC—Co.
- WC—TiC—TaC—Co is obtained by adding tantalum carbide (TaC) to WC—TiC—Co.
- cermet is a sintered composite material in which a metal is combined with a ceramic component.
- the cermet includes a main component of a titanium compound such as titanium carbide (TiC) or titanium nitride (TiN).
- the cutting member 5 is made of a material having a higher level than the material constituting the main body member 3. Specifically, examples of the material of the cutting member 5 include polycrystalline diamond and single crystal diamond. The hardness of the main body member 3 and the cutting member 5 can be evaluated by measuring the Vickers hardness of each part.
- the Vickers hardness may be evaluated using, for example, a well-known test method for measuring a dent remaining after a pyramid-shaped indenter made of regular square pyramid diamond is pushed into the material surface and the load is removed.
- a well-known test method for measuring a dent remaining after a pyramid-shaped indenter made of regular square pyramid diamond is pushed into the material surface and the load is removed.
- the material of the main body member 3 is formed of a material having a hardness lower than that of the indenter, a depression is formed in the main body member 3 when the indenter is pushed into the main body member 3.
- the material of the cutting member 5 is single crystal diamond, the dent is hardly formed.
- the upper surface 7 and the lower surface 9 of the main body member 3 in the present embodiment are each rectangular.
- the upper surface 7 is a surface that comes into contact with the seating surface of the pocket 107 in the holder 103.
- the lower surface 9 is a surface exposed on the tip side of the holder 103.
- the outer peripheral surface 11 of the main body member 3 has four surface areas of a front side surface 17, a rear side surface 19, an outer side surface 21, and an inner side surface 23 corresponding to the sides of the rectangular upper surface 7 and lower surface 9. (Name based on the positional relationship when attached to the holder 103 while being based on FIG. 6). These surface regions are substantially rectangular in the front view of each surface.
- the front side surface 17 is a surface region located in front of the rotation direction X1 when the insert 1 is attached to the holder 103.
- the front side surface 17 is viewed from the front, the width in the direction orthogonal to the rotation axis O1 is longer than the height in the direction along the rotation axis O1.
- the rear side surface 19 is a surface region located behind the rotational direction X ⁇ b> 1 when the insert 1 is attached to the holder 103.
- the rear side surface 19 is located on the side opposite to the front side surface 17 and abuts against the pocket 107 when the insert 1 is attached to the holder 103.
- the outer side surface 21 is a surface region located on the outermost peripheral side in the outer peripheral surface 1 when the insert 1 is attached to the holder 103. Further, the outer surface 21 protrudes in the outer peripheral direction from the holder 103 when the insert 1 is attached to the holder 103. In addition, in this embodiment, although the whole outer side surface 21 protrudes in the outer peripheral direction rather than the holder 103, it is not limited to such a form. For example, the front surface 17 side of the outer surface 21 may partially protrude in the outer peripheral direction from the holder 103.
- the inner side surface 23 is a surface area located on the inner peripheral side when the insert 1 is attached to the holder 103, and contacts the pocket 107 when the insert 1 is attached to the holder 103.
- the upper surface 7, the lower surface 9, the front side surface 17, the rear side surface 19, the outer side surface 21, and the inner side surface 23 need only be a quadrangular shape, and need to be a square shape in a strict sense. Absent.
- the corners of each surface area may be rounded when viewed from the front, and the side located so as to connect the adjacent corners is not a strict linear shape, but partly has irregularities It may be a shape.
- the size of the main body member 3 is not particularly limited.
- the width between the front side surface 17 and the rear side surface 19 when viewed from the top front view of the top surface 3.
- the maximum value is set to about 5 to 20 mm.
- the maximum value of the width between the inner surface 23 and the outer surface 21 when viewed from above is set to about 5 to 20 mm.
- the maximum thickness between the upper surface 7 and the lower surface 9 is 3 to 10 mm.
- the main body member 3 in the present embodiment is the outer surface 21 side of the front side surface 17 of the outer peripheral surface 11, the front side surface 17 side of the outer surface 21, and has a recess 13 at the corner of the lower surface 9. .
- the recess 13 in this embodiment can be said to be located at a part of the corner of the upper surface 7 and a part of the corner of the lower surface 9.
- the cutting member 5 is located in the recess 13 of the main body member 3, and at least three surfaces are exposed.
- the cutting member 5 in the present embodiment has a square plate shape, and the first surface 25 located on the front side surface 17 side of the main body member 3 is exposed.
- the cutting member 5 has a second surface 27 located on the outer surface 21 side of the main body member 3 and a third surface 29 located on the lower surface 9 side of the main body member 3 exposed.
- the cutting member 5 has a cutting edge 15 at a portion where two of the exposed surfaces intersect.
- the cutting edge 15 has a first cutting edge 15A and a second cutting edge 15B.
- the first cutting edge 15 ⁇ / b> A is located at a portion where the first surface 25 and the second surface 27 intersect in the cutting member 5. Therefore, the first cutting edge 15 ⁇ / b> A in the present embodiment extends in a direction from the upper surface 7 to the lower surface 9 of the main body member 3.
- the cutting tool 101 of the present embodiment is a tool used for so-called milling, in which a workpiece 103 is cut by moving the holder 103 in a direction substantially orthogonal to the rotation axis O1 while rotating around the rotation axis O1. is there. Therefore, the first cutting edge 15A functions as a so-called outer peripheral cutting edge that mainly cuts the work material.
- the first cutting edge 15A is located at the entire portion where the first surface 25 and the second surface 27 intersect.
- the first cutting edge 15A may be at least part of a portion where the first surface 25 and the second surface 27 intersect.
- the first surface 25 and the second surface 15A are secured in order to ensure a large cutting height. It is formed on the entire portion where the surface 27 intersects.
- the length of the first cutting edge 15A is set to about 3 to 7 mm, for example.
- the first cutting edge 15 ⁇ / b> A protrudes outward from the outer peripheral surface 11 of the holder 103 when the insert 1 is attached to the holder 103.
- the first cutting edge 15A has a linear shape inclined so as to approach the rear side surface 19 from the end on the lower surface 9 side of the first cutting edge 15A toward the end on the upper surface 7 side of the first cutting edge 15A. It has become.
- the axial rake ⁇ of the first cutting edge 15A with the insert 1 attached to the holder 103 is set to about 3 to 10 °, for example.
- the second cutting edge 15B is located at a portion where the first surface 25 and the third surface 29 of the cutting member 5 intersect. Therefore, the second cutting edge 15 ⁇ / b> B in the present embodiment extends in a direction along the lower surface 9 of the main body member 3.
- the second cutting edge 15B in the present embodiment functions as a “sieving edge” that reduces the unevenness of the processed surface of the work material. Therefore, the second cutting edge 15B is not necessarily formed on the entire portion where the first surface 25 and the third surface 29 intersect, but the outer periphery of the second cutting edge 15B attached to the holder 103. It is desirable to include the side (the right side of the second cutting edge 15B in FIG. 9). The length of the second cutting edge 15B is set to about 2 to 5 mm, for example.
- the second cutting edge 15B protrudes toward the front end side of the holder 103 when the insert 1 is attached to the holder 103.
- the second cutting edge 15B has a shape that protrudes downward when viewed from the front in the rotational direction X1 (for example, FIG. 9).
- the second cutting edge 15B has a linear portion, and in this embodiment, the inner peripheral side from the outer peripheral side (the right side of the second cutting edge 15B in FIG. 9) attached to the holder 103. It has a linear part toward the surface.
- the second cutting edge 15B can function well as a wiping edge.
- the radial rake of the second cutting edge 15B with the insert 1 attached to the holder 103 is set to about 5 to 20 °, for example.
- the main body member 3 can be prevented from coming into contact with the work material without tilting the holder 103 more than necessary.
- the main body member 3 has a through hole 31.
- the through hole 31 is a part for screwing the insert 1 to the holder 103. That is, the screw 105 is inserted into the through hole 31 of the insert 1, the tip of the screw 105 is inserted into a screw hole (not shown) formed in the pocket 107, and the screw 105 is fixed to the screw hole. 1 is mounted on the holder 103.
- the through hole 31 penetrates the upper surface 7 and the lower surface 9 in the main body member 3.
- the through-hole 31 is located from the upper surface 7 to the lower surface 9 in the main body member 3 and is open on the upper surface 7 and the lower surface 9. Therefore, the through hole 31 is not opened on the outer peripheral surface 11 of the main body member 3.
- the penetration direction of the through hole 31 in the present embodiment is along the rotation axis O1.
- the main body A thin region is formed between the recess 13 and the through hole 31 in the member 3. If this thin region exists, this thin region may be damaged by a load applied to the insert 1 during cutting.
- the through hole 31 penetrates the lower surface 9 and the upper surface 7, the recess 13 and the through hole 31 are separated from each other, in other words, the first cutting edge 15A that receives a large cutting resistance.
- the through hole 31 is separated. Therefore, it is avoided that a thin region is formed between the recess 13 and the through hole 31. Thereby, it can be set as the insert 1 which has favorable durability.
- the through-hole 31 is formed from the front side surface 17 to the rear side surface 19, the head of the screw 105 is located at the tip of the chip, so that the head of the screw 105 is damaged.
- the through-hole 31 is opened in the upper surface 7 and the lower surface 9, possibility that the head part of the screw
- the 1st surface 25 is located ahead of the rotation direction X1. Therefore, the first surface 25 of the cutting member 5 functions as a “rake surface” through which chips flow when cutting. Therefore, hereinafter, the first surface 25 is also referred to as a rake surface. Further, the second surface 27 and the third surface 29 of the cutting member 5 function as “flank surfaces” when performing the cutting process.
- the entire second cutting edge 15 ⁇ / b> B is located on the outer peripheral side with respect to the through hole 31. Specifically, the entire second cutting edge 15B is located on the outer peripheral side with respect to the central portion where the inner diameter of the through hole 31 is constant. During cutting, a load due to the main component force is applied from the second cutting edge 15B toward the rear in the rotational direction X1.
- the second cutting edge 15B is positioned on the outer peripheral side with respect to the through hole 31, it is possible to avoid the above-described load from being directly transmitted from the second cutting edge 15B toward the through hole 31. Thereby, the durability of the insert 1 can be further enhanced.
- being positioned on the outer peripheral side means being positioned away from the rotation axis O ⁇ b> 1 of the holder 103.
- the thickness in the vertical direction at the corner where the cutting member 5 is located is thicker than the thickness in the vertical direction in the portion excluding the corner. Therefore, when the main body member 3 is attached to the holder 103, a portion located on the outer peripheral side of the main body member 3 protrudes toward the distal end side. In other words, in FIG. 9, the inner peripheral side of the main body member 3 is partially recessed.
- the length of the first cutting edge 15A can be increased. Further, in the oblique subtraction process in which the holder 103 rotates around the rotation axis O1 and moves in a direction slightly inclined from the direction substantially orthogonal to the rotation axis O1, the main body member 3 and the holder 103 are moved. This is preferable because the possibility of contact with the work material can be reduced stably.
- the ridgeline where the outer surface 21 and the lower surface 9 intersect with each other is inclined so as to be positioned on the tip side toward the front in the rotation direction X1.
- the second cutting edge 15B has a configuration that protrudes most toward the tip. Thereby, possibility that the lower surface 9 will contact a work material can be made small.
- the outer side surface 21 in the main body member 3 has the following configuration, the possibility that the lower surface 9 contacts the work material can be reduced. That is, when attached to the holder 103, the portion of the outer surface 21 located on the front side in the rotational direction X1 protrudes toward the tip side, in other words, the outer surface 21 and the lower surface 9 in the present embodiment are formed. In the intersecting ridge lines, a portion located on the front side in the rotation direction X1 protrudes toward the tip side.
- the parallelogram is formed with an acute angle formed by the front side surface 17 and the outer side surface 21.
- the entire cutting edge 15 is located in front of the through hole 31 in the rotational direction. During cutting, a load is also applied in the direction from the cutting edge 15 toward the rotation axis O1. However, when the entire cutting edge 15 is located in front of the through hole 31 in the rotation direction, it is possible to avoid the above-described load from being directly transmitted from the cutting edge 15 toward the through hole 31. Thereby, the durability of the insert 1 can be further enhanced.
- the cut workpiece is produced by cutting the work material 201.
- the manufacturing method of the cut workpiece in the present embodiment includes the following steps. That is, (1) a step of rotating the cutting tool 101 typified by the above embodiment around the rotation axis O1, (2) a step of bringing the cutting edge 15 of the rotating cutting tool 101 into contact with the work material 201; (3) a step of separating the cutting tool 101 from the work material 201; It has.
- the cutting tool 101 is relatively moved closer to the work material 201 by rotating the cutting tool 101 around the rotation axis O1 and moving in the X2 direction.
- the cutting blade 15 in the cutting tool 101 is brought into contact with the work material 201 to cut the work material 201.
- the first cutting edge and the second cutting edge of the insert 1 are brought into contact with the work material 201 as the cutting edge 15.
- the cutting tool 101 is moved further in the X2 direction to move the cutting tool 101 relatively away from the work material 201.
- the work material 201 is fixed and brought close to the work material 201 in a state where the cutting tool 101 is rotated around the rotation axis O1.
- the work material 201 is cut by bringing the first cutting edge and the second cutting edge of the rotating insert 1 into contact with the work material 201.
- the cutting tool 101 is rotated away from the work material 201.
- the cutting tool 101 is moved to contact the work material 201 by moving the cutting tool 101 in each step, or the cutting tool 101 is separated from the work material 201.
- the cutting tool 101 is not limited to such a form.
- the work material 201 may be brought close to the cutting tool 101 in the step (1).
- the work material 201 may be moved away from the cutting tool 101.
- the state in which the cutting tool 101 is rotated may be maintained, and the process of bringing the cutting edge 15 in the insert 1 into contact with a different part of the work material 201 may be repeated.
- representative examples of the material of the work material 201 include aluminum, carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous metal.
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Abstract
Description
(1)上記実施形態に代表される切削工具101を回転軸O1の周りで回転させる工程と、
(2)回転している切削工具101における切刃15を被削材201に接触させる工程と、
(3)切削工具101を被削材201から離す工程と、
を備えている。
3・・・本体部材
5・・・切削部材
7・・・上面
9・・・下面
11・・・外周面
13・・・凹部
15・・・切刃
15A・・・第1切刃
15B・・・第2切刃
17・・・前側面
19・・・後側面
21・・・外側面
23・・・内側面
25・・・第1面
27・・・第2面
29・・・第3面
31・・・貫通孔
101・・・切削工具
103・・・ホルダ
105・・・ネジ
107・・・インサートポケット(ポケット)
201・・・被削材
Claims (9)
- 上面、下面、及び前記上面と前記下面との間に外周面を有する柱状体である本体部材と、該本体部材における前記外周面の角部に位置し、少なくとも3つの面が露出しており、該面のうち2つの面が交わる部分に切刃を有する切削部材とを具備する切削インサートであって、
前記本体部材が、前記上面と前記下面とを貫く貫通孔を有していることを特徴とする切削インサート。 - 前記切刃は、前記本体部材の前記上面から前記下面に向かう方向に延びる第1切刃と、前記本体部材の前記下面に沿った方向に延びる第2切刃とを有していることを特徴とする請求項1に記載の切削インサート。
- 前記切削部材における前記第1切刃は、前記本体部材よりも側方に突出していることを特徴とする請求項2に記載の切削インサート。
- 前記切削部材における前記第2切刃は、前記本体部材よりも下方に突出していることを特徴とする請求項2又は3に記載の切削インサート。
- 前記本体部材は、前記切削部材が位置する前記角部における厚みが、前記角部を除く部分における厚みよりも厚いことを特徴とする請求項1~4のいずれか1つに記載の切削インサート。
- 回転軸の周りで回転可能であり、先端側にポケットを有するホルダと、
前記ポケット内に位置する、請求項1~7のいずれか1つに記載の切削インサートとを具備した切削工具。 - 前記切刃は、前記本体部材の前記上面から前記下面に向かう方向に延びる第1切刃と、前記本体部材の前記下面に沿った方向に延びる第2切刃とを有し、
前記切削インサートは、前記第2切刃の全体が前記貫通孔よりも前記ホルダの外周側に位置していることを特徴とする請求項6に記載の切削工具。 - 前記切削インサートは、前記切刃の全体が前記貫通孔よりも前記回転方向の前方に位置していることを特徴とする請求項6又は7に記載の切削工具。
- 請求項6~8のいずれか1つに記載の切削工具を回転させる工程と、
回転している前記切削工具を被削材に接触させる工程と、
前記切削工具を前記被削材から離す工程とを備えた切削加工物の製造方法。
Priority Applications (4)
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US15/536,069 US10442016B2 (en) | 2014-12-17 | 2015-12-16 | Cutting insert, cutting tool, and method of manufacturing machined product |
CN201580068734.6A CN107107213B (zh) | 2014-12-17 | 2015-12-16 | 切削工具以及切削加工物的制造方法 |
EP15870031.0A EP3235582A4 (en) | 2014-12-17 | 2015-12-16 | Cutting insert, cutting tool, and method for manufacturing cut article |
JP2016564889A JP6434534B2 (ja) | 2014-12-17 | 2015-12-16 | 切削インサート、切削工具及び切削加工物の製造方法 |
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US10166607B2 (en) * | 2016-10-05 | 2019-01-01 | Iscar, Ltd. | Tetrahedron-shaped cutting insert, insert holder and cutting tool |
USD1040196S1 (en) * | 2020-12-18 | 2024-08-27 | Sumitomo Electric Hardmetal Corp. | Cutting tool |
USD1037326S1 (en) * | 2021-08-26 | 2024-07-30 | Sumitomo Electric Hardmetal Corp. | Cutting tool insert |
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CN107107213A (zh) | 2017-08-29 |
US10442016B2 (en) | 2019-10-15 |
EP3235582A1 (en) | 2017-10-25 |
US20170368615A1 (en) | 2017-12-28 |
JP6434534B2 (ja) | 2018-12-05 |
JPWO2016098829A1 (ja) | 2017-09-14 |
EP3235582A4 (en) | 2018-08-22 |
CN107107213B (zh) | 2020-06-19 |
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