WO2016121870A1 - 切削工具及び切削加工物の製造方法 - Google Patents
切削工具及び切削加工物の製造方法 Download PDFInfo
- Publication number
- WO2016121870A1 WO2016121870A1 PCT/JP2016/052494 JP2016052494W WO2016121870A1 WO 2016121870 A1 WO2016121870 A1 WO 2016121870A1 JP 2016052494 W JP2016052494 W JP 2016052494W WO 2016121870 A1 WO2016121870 A1 WO 2016121870A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting tool
- holder
- insert
- flow path
- cutting
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/28—Features relating to lubricating or cooling
-
- 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
-
- 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
- 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
- B23C2200/36—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
- B23C2210/00—Details of milling cutters
- B23C2210/16—Fixation of inserts or cutting bits in the tool
- B23C2210/165—Fixation bolts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/20—Number of cutting edges
- B23C2210/205—Number of cutting edges six
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/24—Overall form of the milling cutter
- B23C2210/246—Milling cutters comprising a hole or hollow in the end face or between the cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2250/00—Compensating adverse effects during milling
- B23C2250/12—Cooling and lubrication
Definitions
- This aspect relates to a manufacturing method of a cutting tool and a cut product.
- a milling cutter described in Japanese Patent Application Laid-Open No. 8-39387 is known as a cutting tool used when cutting a work material such as metal.
- the milling cutter (cutting tool) described in Patent Document 1 includes a cutter body (holder) having a tip pocket (pocket), and a throw-away tip (insert) attached to a tip mounting seat surface in the tip pocket. Yes.
- the milling cutter described in Patent Document 1 is provided with a cutting fluid supply hole penetrating the cutter body and opening in the chip mounting seat surface, and a cutting fluid supply cut into the throw-away tip and communicating with the cutting fluid supply hole. And a groove.
- the cutting edge of the throw-away tip is cooled by the coolant (coolant) supplied through the cutting fluid supply hole and the cutting fluid supply groove.
- a cutting tool includes an insert having a cutting blade at least at a part of a portion where two surfaces intersect, a mounting portion on which the insert is located, and adjacent to the mounting portion, and from the mounting portion. And a pocket having a notch portion located in front of the rotation direction, an inlet opening at least in part, a first flow path located inside, and an outlet located in the pocket.
- a holder that is rotatable about an axis, and has a recess in the notch.
- FIG. 6 is a C1-C1 sectional view of the cutting tool shown in FIG. FIG.
- FIG. 6 is a C2-C2 sectional view of the cutting tool shown in FIG. It is a perspective view which shows the insert of 1st Embodiment. It is a top view of the insert shown in FIG. It is the side view which looked at the insert shown in FIG. 12 from the B3 direction. It is the side view which looked at the insert shown in FIG. 12 from B4 direction. It is a perspective view which shows the cutting tool of 2nd Embodiment. It is an enlarged view in the front-end
- the cutting tool of the present invention may include any constituent member that is not shown in the drawings to which the present specification refers.
- the dimension of the member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each member, etc. faithfully.
- the cutting tool 1 according to the first embodiment shown in FIGS. 1 to 10 includes a holder 3 and a plurality of inserts 5. Further, the holder 3 has an inlet 6 that opens at least in part, a first flow path 7 that is located inside, an outlet 8, and a pocket 9.
- the holder 3 has a rotation axis O.
- the holder 3 is a columnar member that extends from the front end side toward the rear end side along the rotation axis O when the position where the insert 5 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 3 can rotate around the rotation axis O and rotates in the rotation direction X1.
- the center axis of the holder 3 that is a cylindrical body and the rotation axis O of the holder 3 coincide with each other.
- FIG. 1 is a perspective view of the cutting tool 1 viewed from the rear end side.
- FIG. 3 is a perspective view of the cutting tool 1 as seen from the tip side.
- the holder 3 steel, cast iron, aluminum alloy or the like can be used. In the cutting tool 1 of this embodiment, steel with high toughness is used among these members.
- the size of the holder 3 is appropriately set according to the size of the work material. For example, the length in the direction along the rotation axis O is set to about 30 to 90 mm. The width (diameter) in the direction orthogonal to the rotation axis O is set to about 20 to 500 mm.
- a plurality of pockets 9 are located on the outer peripheral side of the tip of the holder 3 as shown in FIG.
- the pocket 9 in the present embodiment has a placement portion 11 and a notch portion 13.
- the mounting portion 11 is a portion where the insert 5 is located, and is open to the outer peripheral side on the distal end side of the holder 3 before the insert 5 is mounted.
- the notch portion 13 is located in front of the mounting portion 11 in the rotation direction X1.
- the holder 3 has a plurality of pockets 9, but the holder 3 may have a single pocket 9.
- the notch 13 is used as a space for curling chips generated in the insert 5. Therefore, the notch part 13 is located in the front of the rotation direction X1 rather than the mounting part 11 in which the insert 5 is mounted. The notch 13 opens to the outer peripheral side of the holder 3.
- the notch 13 in the present embodiment has a recess 13a.
- the recess 13a has a shape formed by further cutting out the notch 13.
- the recess 13a in the present embodiment opens toward the rear of the rotation direction X1 and the outside of the holder 3.
- the plurality of pockets 9 may be provided at equal intervals or unequal intervals so as to be rotationally symmetric around the rotation axis O. In order to suppress variation in the load applied to the insert 5 attached to each pocket 9, it is preferable that the plurality of pockets 9 are equally spaced.
- the shape is not a strict columnar body.
- the insert 5 attached to the pocket 9 is fixed to the holder 3 with a screw 15.
- FIG. 3 an example is shown in which six pockets 9 are provided in the holder 3 and the inserts 5 are respectively located in the six pockets 9.
- the number of pockets 9 and the number of inserts 5 attached to the holder 3 are not limited to six. Even if these numbers are, for example, 2, 3, 4, 5, 8, 10 or more, there is no problem.
- the insert 5 in the present embodiment is a quadrangular prism as shown in FIGS. 11 to 14, and has an upper surface 17, a lower surface 19 and side surfaces. Each of the upper surface 17 and the lower surface 19 has a quadrangular shape.
- the upper surface 17 is a surface that comes into contact with the placement surface 11 of the pocket 9 in the holder 3. Further, when the insert 1 is attached to the holder 3, the lower surface 19 is a surface exposed on the tip side of the holder 3.
- the side surface has four surface areas corresponding to the sides of the rectangular upper surface 17 and lower surface 19, that is, a front side surface 21, a rear side surface 23, an outer side surface 25, and an inner side surface 27.
- the above four surface areas are based on FIG. 12 and are given names for convenience from the positional relationship when the insert is attached to the holder 3. These surface regions are substantially rectangular in the front view of each surface.
- the front side surface 21 is a surface region located in front of the rotation direction X1 when the insert 5 is attached to the holder 3.
- the front side surface 21 is a rectangle whose width in the direction orthogonal to the rotation axis O (the left-right direction in FIG. 13) is longer than the height in the direction along the rotation axis O (the vertical direction in FIG. 13) when viewed from the front. It is the shape of.
- the rear side surface 23 is a surface region located behind the rotational direction X1 when the insert 5 is attached to the holder 3.
- the rear side surface 23 is located on the side opposite to the front side surface 21, and comes into contact with the mounting portion 11 when the insert 5 is attached to the holder 3.
- the outer surface 25 is a surface region located on the outer peripheral side when the insert 5 is attached to the holder 3. Further, the outer surface 25 protrudes in the outer peripheral direction from the holder 3 when the insert 5 is attached to the holder 3. In addition, in this embodiment, although the whole outer side surface 25 protrudes in the outer peripheral direction rather than the holder 3, it is not limited to such a form. For example, the front side 21 side of the outer side surface 25 may partially protrude from the holder 3 in the outer peripheral direction.
- the inner side surface 27 is a surface region located on the inner peripheral side when the insert 5 is attached to the holder 3, and comes into contact with the mounting portion 11 when the insert 5 is attached to the holder 3.
- the four surface areas of the front side surface 21, the rear side surface 23, the outer side surface 25, and the inner side surface 27 are each substantially rectangular, and each has four corners.
- the upper surface 17, the lower surface 19, the front side surface 21, the rear side surface 23, the outer side surface 25, and the inner side surface 27 have a substantially rectangular shape, and need to be a rectangular 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 insert 5 is not particularly limited.
- the width between the front side surface 21 and the rear side surface 23 when viewed from the top front view of the top surface 17.
- the maximum value is set to about 5 to 20 mm.
- the maximum value of the width between the inner surface 27 and the outer surface 25 when viewed from above is set to about 5 to 20 mm.
- the maximum thickness between the upper surface 17 and the lower surface 19 is 3 to 10 mm.
- Examples of the material of the insert 5 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 insert 5 in the present embodiment has a cutting edge 29.
- the cutting edge 29 is located at least at a part of a portion where two surfaces of the insert 5 intersect.
- the front side surface 21 and the outer surface 25 intersect with each other, and the front side surface 25 and the lower surface 19 intersect with each other.
- the cutting blade 29 may be located at a part where the front side surface 21 and the outer side surface 25 intersect and a part where the front side surface 25 and the lower surface 19 intersect, and is located at the whole of these parts. It may be.
- the cutting blade 29 in this embodiment has an outer peripheral cutting edge 31 and a tip cutting edge 33.
- the outer peripheral cutting edge 31 is located at a portion where the front side surface 21 and the outer side surface 25 intersect.
- the length of the outer peripheral cutting edge 31 is set to about 3 to 7 mm, for example.
- the tip cutting edge 33 is located at a portion where the front side surface 21 and the lower surface 19 intersect.
- the length of the leading edge cutting edge 33 is set to about 2 to 5 mm, for example.
- the cutting tool 1 of the present embodiment is a tool used for so-called milling, in which a workpiece 3 is cut by moving the holder 3 in a direction substantially orthogonal to the rotation axis O while rotating around the rotation axis O. is there. Therefore, the outer peripheral cutting edge 31 functions as a cutting edge that mainly cuts the work material, and the tip cutting edge 33 functions as a “sieving blade” that reduces the unevenness of the processed surface of the work material.
- the insert 5 is mounted on the holder 3 so that the outer peripheral cutting edge 31 is inclined with respect to the rotation axis O.
- This inclination angle is a so-called axial rake, and can be set to, for example, about 3 to 20 ° in the present embodiment.
- the front side surface 21 is located in front of the rotational direction X1 of the insert 5. Therefore, the front side surface 21 functions as a “rake surface” through which chips flow when cutting.
- the outer surface 25 and the lower surface 19 function as “flank surfaces” when cutting.
- the front side surface 21 in the present embodiment has a flat region in the central portion, and approaches the rear side surface 23 as the distance from the cutting blades 29 increases along the outer peripheral cutting edge 31 and the tip cutting edge 33. So as to have an inclined region. By having such an inclined region, the cutting resistance when cutting the work material can be reduced.
- the insert 5 of this embodiment has a through hole 35 as shown in FIG.
- the through hole 35 penetrates the upper surface 17 and the lower surface 19 in the insert 5.
- the through hole 35 is located from the upper surface 17 to the lower surface 19 in the insert 5, and is open on the upper surface 17 and the lower surface 19. Therefore, the through hole 35 is not opened on the side surface of the insert 5.
- the through direction of the through hole 35 in the present embodiment is along the rotation axis O1.
- the through hole 35 is a part for screwing the insert 5 to the holder 3. Inserting the screw 15 into the through hole 35 of the insert 5, inserting the tip of the screw 15 into a screw hole (not shown) formed in the pocket 9, and fixing the screw 15 to the screw hole, the insert 5 Mounted on the holder 3.
- the holder 3 in the present embodiment includes a first flow path 7 through which a fluid (coolant) for cooling the insert 5 flows, as shown in FIGS. 2 and 4.
- the first flow path 7 functions as a portion through which coolant flows when the cutting tool 1 is used.
- the coolant is supplied from the inlet 6 of the holder 3.
- the inflow port 6 is opened in at least a part of the holder 3, and FIG. 8 shows an example of being located on the rear end side.
- the coolant supplied from the inflow port 6 flows through the first flow path 7 located inside the holder 3 to the outflow port 8.
- the outlet 8 continuing from the first flow path 7 in the present embodiment is located in the pocket 9. Specifically, the outlet 8 is adjacent to the placement unit 11 and is open at the placement unit 11. The outlet 8 is connected to the second flow path 39, and the coolant flowing through the first flow path 7 flows out through the second flow path 39.
- the second flow path 39 in the present embodiment is located between the outlet 8 and the recess 13a, and opens in the pocket 9 toward the recess 13a.
- the coolant flowing through the first flow path 7 passes through the second flow path 39 and is injected toward the recess 13a.
- the coolant is not sprayed toward the outside of the holder 3, but is sprayed toward the recess 13a in the pocket 9. Therefore, the coolant sprayed from the first flow path 7 is stored in the recess 13 a, and the coolant stored in the recess 13 a flows to the cutting blade 29, thereby cooling the cutting blade 29. That is, since the cutting tool 1 of this embodiment has the recessed part 13a in the notch part 13, it is possible to accumulate
- the coolant sprayed from the first flow path 7 is stored in the recess 13a, and the coolant stored in the recess 13a flows to the cutting blade 29, whereby the coolant can be dispersed appropriately. Therefore, a wide range of the cutting blade 29 can be cooled.
- by appropriately dispersing the coolant it is easy to stably discharge chips generated by the cutting blade 29 to the outside. Thereby, since it becomes difficult for a chip to bite into a processing surface, durability of the cutting blade 29 is improved.
- the coolant is made of, for example, a water-insoluble oil agent or a water-soluble oil agent, and is appropriately selected and used depending on the material of the work material.
- water-insoluble oils include oily, inert extreme pressure, and active extreme pressure cutting oils.
- water-soluble oils include cutting oils such as emulsions, solubles or solutions.
- the flow path in the present embodiment is constituted by the first flow path 7 and the second flow path 39 as shown in FIGS.
- the first flow path 7 has a hole shape provided in the holder 3 and extends from the rear end side of the holder 3 toward the front end side. At this time, one end of the first flow path 7 is open in the placement portion 11 of the pocket 9.
- a plurality of first flow paths 7 are provided according to the number of pockets 9. Specifically, since the holder 3 has six pockets 9, six first flow paths 7 are also provided. Each of the plurality of first flow paths 7 extends straight. Since six first flow paths 7 are formed, six second flow paths 39 are also provided.
- the insert 5 has the 2nd flow path 39 provided between the mounting part 11 of the holder 3, and the insert 5.
- FIG. As described above, since the part of the inner surface has the second flow path 39 configured by the insert 5, the insert 5 can be cooled also in the second flow path 39.
- the second flow path 39 extends straight from the first flow path 7 toward the recess 13a. Therefore, the coolant injected from the first flow path 7 can be stably stored in the recess 13a.
- the insert 5 in the present embodiment has a groove portion 41 located on the upper surface 17 which is a surface facing the mounting portion 11 of the holder 3 as shown in FIGS. 11 and 12.
- the groove 41 extends to the end of the upper surface 17 on the front side 21 side.
- one end portion of the groove portion 41 is connected to the outlet 8 of the first flow path 7.
- the other end of the groove 41 is open to the front side surface 21. That is, the groove part 41 constitutes a part of the second flow path 39.
- the second flow path 39 may be configured, for example, by forming a groove portion connected to the first flow path 7 in the mounting portion 11, but is formed on the surface of the insert 5 as in the present embodiment. It is preferable that the groove 41 and the surface of the mounting portion 11 are formed. Thereby, since the surface area which contacts the coolant in the insert 5 can be increased, the insert 5 can be cooled more efficiently.
- the cross-sectional area in the cross section orthogonal to the coolant flow direction of each of the first flow path 7 and the second flow path 39 is greater than the cross-sectional area of the first flow path 7. Small cross-sectional area.
- the recess 13a has a function of accumulating coolant flowing in from the flow path. As shown in FIG. 6, the recess 13 a in the present embodiment is at least partially located on the first imaginary line L ⁇ b> 1 connecting the rotation axis O and the cutting edge 29 when viewed through the tip.
- the holder 3 rotates around the rotation axis O. Therefore, centrifugal force is applied to the coolant that has flowed into the recess 13a. By this centrifugal force, the coolant flows from the center side of the holder 3 to the outer peripheral side.
- at least a part of the recess 13a is located on the first imaginary line L1 connecting the rotation axis O and the cutting edge 29, and therefore flows out of the recess 13a by centrifugal force. It becomes easy for the coolant to go to the cutting edge 29. Therefore, the cutting blade 29 can be efficiently cooled.
- the recess 13a in the present embodiment is composed of a first part 43 and a second part 45 as shown in FIGS.
- the first part 43 is located inside the holder 3 and has a curved surface shape.
- the second part 45 is located on the outer side of the holder 3 than the first part 43, and extends from the first part 43 toward the outer periphery of the holder 3. In the present embodiment, no step is provided between the first part 43 and the second part 45, and both are smoothly connected.
- the bottom surface of the recess 13a has a curved surface shape. That is, the bottom of the recess 13 a is the first portion 43.
- the curved surface shape is a curved shape in which the central portion is recessed from the outer peripheral portion, and means a so-called concave shape.
- the second flow path 39 of the first flow path 7 extends toward the bottom surface of the recess 13 a, that is, the first portion 43.
- the bottom surface of the recess 13a has a curved shape, so that coolant injected from the flow path can be accumulated.
- the direction in which the coolant flows can be changed smoothly. Therefore, the coolant can flow toward the cutting edge 29 without excessively weakening the momentum in which the coolant flows.
- the recessed part 13a in this embodiment has the 2nd site
- the second part 45 is located outside the first part 43 and has a cylindrical shape. Since the second part 45 extends straight from the first part 43 toward the outside of the holder 3, the direction in which the coolant flows in the recess 13a is easily determined. Therefore, excessive scattering of the coolant flowing direction is suppressed.
- the surface of the second portion 45 has a curved portion, not a polygonal shape such as a quadrangle. That is, the cylindrical shape in the present embodiment does not mean that the shape in the above cross section is strictly a circular shape, but a shape having a curved portion instead of a polygonal shape. I mean.
- the second flow path 39 is located between the outlet 8 and the first portion 43 of the recess 13a. That is, the second flow path 39 extends toward the first portion 43 of the recess 13a.
- the coolant sprayed from the second flow path 39 to the concave portion 13a is sprayed to the curved first portion 43, thereby suppressing the coolant from bouncing back at the concave portion 13a and excessively reducing the flowing momentum of the coolant. .
- the second portion 45 of the recess 13 a rotates from the end located on the inner side of the holder 3 toward the end located on the outer side of the holder 3. It is inclined backward in the direction X1.
- the second portion 45 is inclined toward the rear in the rotational direction X1 at an angle ⁇ .
- the cooling portion 11 to which the insert 5 is attached is located behind the concave portion 13a in the rotation direction X1, the coolant is cut from the concave portion 13a when the second portion 45 is inclined as described above. It becomes easy to flow toward the blade 29.
- FIG. 15 is a perspective view corresponding to FIG. 3 in the first embodiment.
- FIG. 16 is a perspective view corresponding to FIG. 2 in the first embodiment.
- FIG. 19 is a perspective view corresponding to FIG. 5 in the first embodiment.
- FIG. 21 is a perspective view corresponding to FIG. 7 in the first embodiment.
- FIG. 22 is a perspective view corresponding to FIG. 8 in the first embodiment.
- the cutting tool 1 of 2nd Embodiment is equipped with the holder 3 and the some insert 5 similarly to the cutting tool 1 of 1st Embodiment. Further, the holder 3 has an inlet 6 that opens at least in part, a first flow path 7 that is located inside, an outlet 8, and a pocket 9.
- the structure through which the coolant mainly flows and the recessed part 13a differs.
- the flow path in the first embodiment is configured by the first flow path 7 and the second flow path 39 each extending straight, but the flow path in the present embodiment is constituted only by the first flow path 7. It is configured and does not have a configuration corresponding to the second flow path 39.
- the 1st channel 7 in this embodiment is the shape extended straight like the 1st channel 7 in a 1st embodiment.
- the first flow path 7 in the present embodiment has a hole shape in which one end portion opens from the placement portion 11 to the recess portion 13a in the pocket 9. Therefore, the coolant that has flowed from the first flow path 7 is supplied directly to the recess 13 a without passing through the second flow path 39.
- the insert 5 is attached to this part. Therefore, since the insert 5 serves as a lid, the amount of coolant discharged outside without flowing into the recess 13 from the outlet 8 of the first flow path 7 in the mounting portion 11 can be reduced.
- the second flow path 39 is formed by the groove 41 formed on the surface of the insert 5 and the surface of the mounting portion 11, but the cutting tool 1 of the present embodiment has the second flow path. 39 is not included. Therefore, it is not necessary to form the groove 41 on the surface of the insert 5. Accordingly, the degree of freedom of the shape of the insert 5 can be increased.
- the coolant flowing from the first flow path 7 can be directly injected toward the recess 13a, it is not necessary to form the recess 13a excessively large. Therefore, since it becomes easy to ensure the thickness of the holder 3 between the plurality of pockets 9, the durability of the holder 3 can be enhanced.
- the inner diameter D1 of the first flow path 7 and the inner diameter D2 of the recess 13a are the same.
- the inner diameter D1 of the first flow path 7 and the inner diameter D2 of the recess 13a each mean a width in a direction orthogonal to the direction in which the coolant flows. Further, the same inner diameter does not mean that the inner diameter D1 and the inner diameter D2 are strictly the same, but means that the inner diameter D2 may vary by about ⁇ 10% with respect to the inner diameter D1. ing.
- the concave portion 13a in the present embodiment is similar to the concave portion 13a in the first embodiment, and is a concave-shaped first portion 43 (bottom surface) and a cylindrical first portion extending from the first portion 43 toward the outer periphery of the holder 3. 2 parts 45. And a coolant is injected toward the 1st site
- the second portion 45 opens toward the rear in the rotation direction X1.
- the width in the direction orthogonal to the coolant flow direction in the portion opening toward the rear of the rotation direction X1 is evaluated as the inner diameter D2 as shown in FIG.
- the second portion 45 of the recess 13 a extends from the first portion 43 toward the outer periphery of the holder 3. And when it sees from the front end side, the 2nd site
- the distance between the second imaginary line L2 indicating the portion located in the front of the rotation direction X1 in the second portion 45 and the insert 5 is substantially smaller as it goes from the inner periphery to the outer periphery of the holder 3. .
- part 45 can be sprayed toward the insert 5 more reliably.
- the cut workpiece is produced by cutting a work material.
- 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 1 represented by the above embodiment; (2) contacting the rotating cutting tool 1 with the work material 101; (3) a step of separating the cutting tool 1 from the work material 101; It has.
- the manufacturing method of this embodiment although demonstrated using the cutting tool 1 of 1st Embodiment, there is no problem even if it uses the cutting tool 1 of 2nd Embodiment as a cutting tool.
- the cutting tool 1 is rotated around the rotation axis O and moved in the X2 direction to bring the cutting tool 1 relatively close to the work material 101.
- the cutting blade 29 in the cutting tool 1 is brought into contact with the work material 101 to cut the work material 101.
- the cutting edge 29 of the insert is brought into contact with the work material 101 as the cutting edge 29 and the outer peripheral cutting edge.
- the cutting tool 1 is moved away from the work material 101 by moving the cutting tool 1 in the X2 direction.
- the work material 101 is fixed and brought close to the work material 101 while the cutting tool 1 is rotated around the rotation axis O.
- the work material 101 is cut by bringing the cutting edge 101 and the outer peripheral cutting edge of the rotating insert into contact with the work material 101.
- the cutting tool 1 is rotated away from the work material 101.
- the cutting tool 1 is brought into contact with the work material 101 by moving the cutting tool 1 in each step, or the cutting tool 1 is separated from the work material 101.
- the cutting tool 1 is not limited to such a form.
- the work material 101 may be brought close to the cutting tool 1 in the step (1). Similarly, the work material 101 may be moved away from the cutting tool 1 in the step (3). In the case of continuing the cutting process, the state in which the cutting tool 1 is rotated and the cutting blade 29 in the insert is brought into contact with a different part of the work material 101 may be repeated.
- typical examples of the material of the work material 101 include aluminum, carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous metal.
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- Cutting Tools, Boring Holders, And Turrets (AREA)
- Milling Processes (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
(1)上記実施形態に代表される切削工具1を回転させる工程と、
(2)回転している切削工具1を被削材101に接触させる工程と、
(3)切削工具1を被削材101から離す工程と、
を備えている。なお、本実施形態の製造方法においては、第1実施形態の切削工具1を用いて説明するが、切削工具として第2実施形態の切削工具1を用いても何ら問題ない。
3・・・ホルダ
5・・・インサート
6・・・流入口
7・・・流路
8・・・流出口
9・・・ポケット
11・・・載置部
13・・・切欠き部
13a・・・凹部
15・・・ネジ
17・・・上面
19・・・下面
21・・・前側面
23・・・後側面
25・・・外側面
27・・・内側面
29・・・切刃
31・・・外周切刃
33・・・先端切刃
35・・・貫通孔
37・・・第1流路
39・・・第2流路
40・・・第3流路
41・・・溝部
43・・・第1部位
45・・・第2部位
101・・・被削材
Claims (8)
- 2つの面が交わる部分の少なくとも一部に切刃を有するインサートと、
該インサートが位置する載置部および該載置部に隣接しているとともに該載置部よりも前記回転方向の前方に位置する切欠き部を有するポケットと、少なくとも一部に開口する流入口と、内部に位置する第1流路と、前記ポケットに位置する流出口とを有し、回転軸の周りで回転可能なホルダと、を具備し、
前記切欠き部に凹部を有していることを特徴とする切削工具。 - 先端視において、前記凹部は、前記回転軸と前記切刃とを結ぶ第1仮想線上に少なくとも一部が位置していることを特徴とする請求項1に記載の切削工具。
- 前記流出口と前記凹部との間に第2流路を有していることを特徴とする請求項1又は2に記載の切削工具。
- 前記インサートは、前記載置部と対向する面に溝部を有し、
該溝部が、前記第2流路の一部を構成していることを特徴とする請求項3に記載の切削工具。 - 前記凹部は、前記ホルダの内方に曲面形状の第1部位を有していることを特徴とする請求項1~4のいずれか1つに記載の切削工具。
- 前記凹部は、前記第1部位の外方に位置する円筒形状の第2部位を有していることを特徴とする請求項5に記載の切削工具。
- 先端透視において、前記第2部位は、前記ホルダの内方に位置する端部から前記ホルダの外方に位置する端部に向かって前記回転方向の後方に傾斜していることを特徴とする請求項6に記載の切削工具。
- 請求項1~7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。
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JP2016572146A JPWO2016121870A1 (ja) | 2015-01-29 | 2016-01-28 | 切削工具及び切削加工物の製造方法 |
US15/546,593 US10456847B2 (en) | 2015-01-29 | 2016-01-28 | Cutting tool and method for manufacturing machined product |
CN201680007274.0A CN107206515A (zh) | 2015-01-29 | 2016-01-28 | 切削工具以及切削加工物的制造方法 |
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Cited By (5)
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CN108115156A (zh) * | 2016-11-29 | 2018-06-05 | 京瓷株式会社 | 切削刀具以及切削加工物的制造方法 |
US20190255628A1 (en) * | 2016-03-28 | 2019-08-22 | Kyocera Corporation | Cutting tool insert |
JP2021007986A (ja) * | 2019-06-28 | 2021-01-28 | 株式会社タンガロイ | 切削工具 |
JP7312387B1 (ja) * | 2022-12-08 | 2023-07-21 | 株式会社タンガロイ | 刃先交換式切削工具および切削インサート |
JP7340168B1 (ja) * | 2022-12-21 | 2023-09-07 | 株式会社タンガロイ | 切削工具とそのボディ |
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US10384275B2 (en) * | 2015-04-21 | 2019-08-20 | Kyocera Corporation | Cutting tool and method for manufacturing the machined product |
US10166607B2 (en) * | 2016-10-05 | 2019-01-01 | Iscar, Ltd. | Tetrahedron-shaped cutting insert, insert holder and cutting tool |
WO2019022016A1 (ja) * | 2017-07-26 | 2019-01-31 | 京セラ株式会社 | 切削インサート、切削工具及び切削加工物の製造方法 |
CN109352055B (zh) * | 2018-12-07 | 2020-01-10 | 西安交通大学 | 一种具有自冷却润滑结构的方肩铣刀 |
EP4382232A1 (de) * | 2022-12-07 | 2024-06-12 | CERATIZIT Besigheim GmbH | Fräswerkzeug |
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JPWO2016121870A1 (ja) | 2017-10-26 |
US10456847B2 (en) | 2019-10-29 |
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CN107206515A (zh) | 2017-09-26 |
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