WO2023276672A1 - 回転切削工具 - Google Patents

回転切削工具 Download PDF

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Publication number
WO2023276672A1
WO2023276672A1 PCT/JP2022/023973 JP2022023973W WO2023276672A1 WO 2023276672 A1 WO2023276672 A1 WO 2023276672A1 JP 2022023973 W JP2022023973 W JP 2022023973W WO 2023276672 A1 WO2023276672 A1 WO 2023276672A1
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WO
WIPO (PCT)
Prior art keywords
cutting edge
cutting
rotation angle
angle
edges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/023973
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English (en)
French (fr)
Japanese (ja)
Inventor
祐満 宮崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALMT Corp
Original Assignee
ALMT Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ALMT Corp filed Critical ALMT Corp
Priority to CN202280046296.3A priority Critical patent/CN117580666A/zh
Priority to MX2023014542A priority patent/MX2023014542A/es
Priority to US18/569,858 priority patent/US20240286211A1/en
Priority to JP2023531776A priority patent/JP7555491B2/ja
Publication of WO2023276672A1 publication Critical patent/WO2023276672A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D77/00—Reaming tools
    • B23D77/02—Reamers with inserted cutting edges
    • 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
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D77/00—Reaming tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D2277/00—Reaming tools
    • B23D2277/04—Cutting angles

Definitions

  • This invention relates to rotary cutting tools.
  • This application claims priority from Japanese Patent Application No. 2021-106571 filed on June 28, 2021. All the contents described in the Japanese patent application are incorporated herein by reference.
  • Patent Document 1 International Publication No. 2020/003679
  • Patent Document 2 International Publication No. 2020/003680
  • Patent Document 3 Japanese Patent Laid-Open No. 2011-62790
  • a rotary cutting tool has first to fifth cutting edges on the circumference, the angle of rotation from the first cutting edge to the second cutting edge is 60 ⁇ 1°, The rotation angle from the cutting edge to the third cutting edge is 75 ⁇ 1°, the rotation angle from the third cutting edge to the fourth cutting edge is 60 ⁇ 1°, and the fourth cutting edge to the fifth cutting edge.
  • the rotation angle from the fifth cutting edge to the first cutting edge is 90 ⁇ 1°.
  • FIG. 1 is a front view of a reamer 100 as a rotary cutting tool according to an embodiment.
  • FIG. 2 is an enlarged view of the distal end portion 106 of the reamer 100 shown in FIG.
  • FIG. 3 is a side view of the four-bladed reamer 100 viewed in the direction indicated by arrow III in FIG.
  • FIG. 4 is a side view of a five-bladed reamer 100 according to another embodiment.
  • FIG. 5 is a side view of a three-bladed reamer 100 according to another embodiment.
  • FIG. 6 is a diagram showing the resultant force of cutting resistance.
  • FIG. 1 is a front view of a reamer 100 as a rotary cutting tool according to an embodiment.
  • reamer 100 according to Embodiment 1 has base metal 109 .
  • a root portion 107 of the base metal 109 is cylindrical and has a larger diameter than the tip portion 106 .
  • a hole 108 is provided along the central axis of rotation of the base metal 109 . Coolant is supplied to the holes 108 . Coolant is discharged from the tip portion 106 of the reamer 100 and supplied to the contact portion between the work material and the reamer 100 .
  • Base metal 109 is made of cemented carbide or steel, for example.
  • FIG. 2 is an enlarged view of the distal end portion 106 of the reamer 100 shown in FIG.
  • a first tip 121 and a third tip 123 are provided at the distal end portion 106 of the reamer 100 .
  • the distal end 106 is provided with another tip not shown in FIG.
  • FIG. 3 is a side view of the four-bladed reamer 100 viewed from the direction indicated by arrow III in FIG. As shown in FIG. 3, a first tip 121 to a fourth tip 124 are provided on the outer circumference of the base metal 109 of the reamer 100 .
  • the first tip 121 to fourth tip 124 are provided with first cutting edge 101 to fourth cutting edge 104 .
  • the first cutting edge 101 to the fourth cutting edge 104 are portions that come into contact with the work material and process the work material.
  • the first tip 121 to the fourth tip 124 are made of super hard tool material such as cemented carbide, diamond or cubic boron nitride.
  • the rotation angle from the first cutting edge 101 to the second cutting edge 102 is ⁇ 1, the rotation angle from the second cutting edge 102 to the third cutting edge 103 is ⁇ 2, and the rotation angle from the third cutting edge 103 to the fourth cutting edge 103 is ⁇ 2.
  • the rotation angle up to the cutting edge 104 is ⁇ 3, and the rotation angle from the fourth cutting edge 104 to the first cutting edge 101 is ⁇ 4.
  • ⁇ 1 to ⁇ 4 are arranged in the order of ⁇ 1, ⁇ 2, ⁇ 3 and ⁇ 4 along the rotation direction during cutting.
  • the base metal 109 is provided with four flutes 131-134. Four flutes 131 - 134 extend along the longitudinal direction of the base metal 109 .
  • the flutes 131-134 are provided with coolant holes 111-114 connected to the holes 108. As a result, the coolant is supplied from the holes 108 to the coolant holes 111-114.
  • ⁇ 1 is 72 ⁇ 1°
  • ⁇ 2 is 108 ⁇ 1°
  • ⁇ 3 is 90 ⁇ 1°
  • ⁇ 4 is 90 ⁇ 1°.
  • ⁇ 1 is 105 ⁇ 1°
  • ⁇ 2 is 90 ⁇ 1°
  • ⁇ 3 is 90 ⁇ 1°
  • ⁇ 4 is 75 ⁇ 1°.
  • ⁇ 1 is 90 ⁇ 1°
  • ⁇ 2 is 90 ⁇ 1°
  • ⁇ 3 is 105 ⁇ 1°
  • ⁇ 4 is 75 ⁇ 1°.
  • FIG. 4 is a side view of a five-bladed reamer 100 according to another embodiment.
  • a first tip 121 to a fifth tip 125 are provided on the outer circumference of the base metal 109 of the reamer 100 .
  • the first tip 121 to the fifth tip 125 are provided with the first cutting edge 101 to the fifth cutting edge 105 .
  • the first cutting edge 101 to the fifth cutting edge 105 are portions that come into contact with the work material and process the work material.
  • the first tip 121 to the fifth tip 125 are made of a super hard tool material such as cemented carbide, diamond or cubic boron nitride.
  • the rotation angle from the first cutting edge 101 to the second cutting edge 102 is ⁇ 1, the rotation angle from the second cutting edge 102 to the third cutting edge 103 is ⁇ 2, and the rotation angle from the third cutting edge 103 to the fourth cutting edge 103 is ⁇ 2.
  • the rotation angle up to the cutting edge 104 is ⁇ 3, the rotation angle from the fourth cutting edge 104 to the fifth cutting edge 105 is ⁇ 4, and the rotation angle from the fifth cutting edge 105 to the first cutting edge 101 is ⁇ 5. be.
  • the base metal 109 is provided with five flutes 131-135.
  • Five flutes 131-135 extend along the longitudinal direction of the base metal 109. As shown in FIG.
  • the flutes 131-135 are provided with coolant holes 111-115 connected to the holes 108. As a result, the coolant is supplied from the holes 108 to the coolant holes 111-115. Coolant holes 111-115 may not be provided. The hole 108 may or may not be open at the tip of the base metal 109 .
  • ⁇ 1 is 60 ⁇ 1°
  • ⁇ 2 is 75 ⁇ 1°
  • ⁇ 3 is 60 ⁇ 1°
  • ⁇ 4 is 75 ⁇ 1°
  • ⁇ 5 is 90 ⁇ 1°.
  • ⁇ 1 is 60 ⁇ 1°
  • ⁇ 2 is 72 ⁇ 1°
  • ⁇ 3 is 60 ⁇ 1°
  • ⁇ 4 is 84 ⁇ 1°
  • ⁇ 5 is 84 ⁇ 1°.
  • FIG. 5 is a side view of a three-bladed reamer 100 according to another embodiment.
  • a first tip 121 to a third tip 123 are provided on the outer circumference of the base metal 109 of the reamer 100 .
  • the first tip 121 to the third tip 123 are provided with the first cutting edge 101 to the third cutting edge 103 .
  • the first cutting edge 101 to the third cutting edge 103 are portions that come into contact with the work material and process the work material.
  • the first tip 121 to the third tip 123 are made of super hard tool material such as cemented carbide, diamond or cubic boron nitride.
  • the angle of rotation from the first cutting edge 101 to the second cutting edge 102 is ⁇ 1
  • the angle of rotation from the second cutting edge 102 to the third cutting edge 103 is ⁇ 2
  • the angle from the third cutting edge 103 to the first cutting edge is ⁇ 1.
  • the rotation angle up to the cutting edge 101 is ⁇ 3.
  • the base metal 109 is provided with three flutes 131-133. Three flutes 131-133 extend along the longitudinal direction of the base metal 109. As shown in FIG.
  • the flutes 131-133 are provided with coolant holes 111-113 connected to the holes 108. As a result, coolant is supplied from the holes 108 to the coolant holes 111-113.
  • FIG. 6 is a diagram showing the resultant force of cutting resistance.
  • a rotational orbit 102a of the second cutting edge 102 is indicated by an arc.
  • the magnitude of the cutting resistance (back force) of the second cutting edge 102 at the point of contact with the work material is represented by F1.
  • F1 The magnitude of the cutting resistance (back force) of the second cutting edge 102 at the point of contact with the work material.
  • the x component force of F1 is -F1 cos ⁇ 1
  • the y component force is -F1 sin ⁇ 1.
  • the magnitude of the cutting resistance (back force) of the third cutting edge 103 at the point of contact with the work material is represented by F2.
  • the third cutting edge 103 forms an angle ⁇ 1+ ⁇ 2 from the x-axis, which is the reference axis.
  • the x component force of F2 is -F2cos( ⁇ 1+ ⁇ 2)
  • the y component force is -F2sin( ⁇ 1+ ⁇ 2).
  • the magnitude of the cutting resistance (thrust force) of the n-th cutting edge at the contact point with the work material is represented by Fn-1.
  • the n-th cutting edge forms an angle ⁇ 1+ ⁇ 2+ . . . + ⁇ n-1 from the x-axis which is the reference axis.
  • the x component force of Fn-1 is -Fn-1cos( ⁇ 1+ ⁇ 2+...+ ⁇ n-1), and the y component force is -Fn-1sin( ⁇ 1+ ⁇ 2+...+ ⁇ n-1).
  • the magnitude of the cutting resistance (back force) of the first cutting edge 101 at the contact point with the work material is represented by Fn.
  • the first cutting edge 101 forms an angle ⁇ 1+ ⁇ 2+ . . . + ⁇ n from the x-axis which is the reference axis.
  • the x-component force of Fn is -Fncos( ⁇ 1+ ⁇ 2+...+ ⁇ n)
  • the y-component force is -Fnsin( ⁇ 1+ ⁇ 2+...+ ⁇ n).
  • the resultant force of the x component is -F1 cos ⁇ 1-F2 cos ( ⁇ 1+ ⁇ 2)-...-Fn-1 cos ( ⁇ 1+ ⁇ 2+...+ ⁇ n-1)-Fn cos ( ⁇ 1+ ⁇ 2+...+ ⁇ n).
  • the resultant force of the y component is ⁇ F1 sin ⁇ 1 ⁇ F2 sin( ⁇ 1+ ⁇ 2) ⁇ ... ⁇ Fn ⁇ 1 sin( ⁇ 1+ ⁇ 2+...+ ⁇ n ⁇ 1) ⁇ Fnsin( ⁇ 1+ ⁇ 2+...+ ⁇ n).
  • ⁇ F ⁇ 2sin ⁇ 1 ⁇ F ⁇ 3sin( ⁇ 1+ ⁇ 2) ⁇ ... ⁇ F ⁇ nsin( ⁇ 1+ ⁇ 2+...+ ⁇ n ⁇ 1) ⁇ F ⁇ 1sin( ⁇ 1+ ⁇ 2+...+ ⁇ n) ⁇ F ⁇ 2sin ⁇ 1+ ⁇ 3sin( ⁇ 1+ ⁇ 2)+...+ ⁇ nsin( ⁇ 1+ ⁇ 2+ . . . + ⁇ n ⁇ 1)+ ⁇ 1sin( ⁇ 1+ ⁇ 2+ . . . + ⁇ n) ⁇ .
  • a unequal splitting angle means that a splitting angle among multiple splitting angles of a plurality of cutting edges is different from another splitting angle. For example, with four blades, split angles of 90°, 90°, 70°, and 110° are unequal split angles.
  • Example 1 First, three-bladed reamers (see FIGS. 1, 2 and 5) of sample numbers 1 to 8, 6-1 and 6-2 shown in Table 1 were prepared. The unit of ⁇ is "°". Sample No. 6-1 is obtained by changing the angles ⁇ 1 to ⁇ 3 of Sample No. 6 within the range of ⁇ 1°. Sample No. 6-2 is obtained by changing the angles ⁇ 1 to ⁇ 3 of Sample No. 6 within a range of ⁇ 2°.
  • Tip material Polycrystalline diamond Base metal material: Cemented carbide Tool diameter D: 12mm Tool protrusion length L: 70 mm
  • Dimensions and shape of pilot hole 11.2 mm inner diameter, 20 mm deep blind hole Number of processes: 5
  • Peripheral speed 249m/min Feed (mm/rev): 0.6 (3 blades), 0.8 (4 blades), 1 (5 blades)
  • RPM 6600min -1 Processing depth: 18mm
  • Equipment Vertical machining center (spindle BT30)
  • Cutting oil Emulsion-based water-soluble coolant, dilution ratio 10% As a result of cutting, the presence or absence of feed marks on the cut surface was visually examined.
  • Circularity is defined as the difference between the radii of two concentric geometric circles when the space between two concentric geometric circles is the minimum, according to JIS B 0621-1984. Table 2 shows the results.
  • “Circularity” in Table 2 is the average value of the circularity of the processed holes. The roundness was measured at the entrance, middle and back of each hole, and the largest value was taken as the roundness of the hole. Samples Nos. 6 to 8 and 6-1 had no feed marks and had good roundness values.
  • Example 2 Four-bladed reamers (see FIGS. 1, 2 and 3) of sample numbers 11 to 30, 51 to 53 and 29-1 to 29-3 shown in Table 3 were prepared.
  • Sample Nos. 29-1 and 29-2 are obtained by changing the angles ⁇ 1 to ⁇ 4 of Sample No. 29 within the range of ⁇ 1°.
  • Sample No. 29-3 is obtained by changing the angles ⁇ 1 to ⁇ 4 of Sample No. 29 within a range of ⁇ 2°.
  • “Circularity” in Table 4 is the average value of the circularity of the processed holes. Samples Nos. 25, 27, 29, 30, 51 to 53, 29-1 and 29-2 had no feed marks and had good roundness values.
  • Example 3 Five-bladed reamers (see FIGS. 1, 2 and 4) of sample numbers 31 to 46 and 40-1 to 40-3 shown in Table 5 were prepared. Sample Nos. 40-1 and 40-2 are obtained by changing the angles ⁇ 1 to ⁇ 5 of Sample No. 40 within a range of ⁇ 1°. Sample No. 40-3 is obtained by changing the angles ⁇ 1 to ⁇ 5 of Sample No. 40 within a range of ⁇ 2°.
  • “Circularity” in Table 6 is the average value of the circularity of the two processed holes. Samples Nos. 37, 39 to 41, 43 to 46, 40-1 and 40-2 had no feed marks and had good roundness values.
  • 100 reamer 101 first cutting edge, 102 second cutting edge, 102a rotation orbit, 103 third cutting edge, 104 fourth cutting edge, 105 fifth cutting edge, 106 tip, 107, root , 108 hole, 109 base metal, 111-115 coolant hole, 121 first tip, 122 second tip, 123 third tip, 124 fourth tip, 125, fifth tip, 131-135 flute.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Milling Processes (AREA)
PCT/JP2022/023973 2021-06-28 2022-06-15 回転切削工具 Ceased WO2023276672A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202280046296.3A CN117580666A (zh) 2021-06-28 2022-06-15 旋转切削刀具
MX2023014542A MX2023014542A (es) 2021-06-28 2022-06-15 Herramienta de corte giratoria.
US18/569,858 US20240286211A1 (en) 2021-06-28 2022-06-15 Rotary cutting tool
JP2023531776A JP7555491B2 (ja) 2021-06-28 2022-06-15 回転切削工具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-106571 2021-06-28
JP2021106571 2021-06-28

Publications (1)

Publication Number Publication Date
WO2023276672A1 true WO2023276672A1 (ja) 2023-01-05

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PCT/JP2022/023973 Ceased WO2023276672A1 (ja) 2021-06-28 2022-06-15 回転切削工具

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US (1) US20240286211A1 (https=)
JP (1) JP7555491B2 (https=)
CN (1) CN117580666A (https=)
MX (1) MX2023014542A (https=)
WO (1) WO2023276672A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0631919U (ja) * 1992-09-30 1994-04-26 株式会社日研工作所 複合型リーマ
JP2012091306A (ja) * 2010-10-29 2012-05-17 Hitachi Tool Engineering Ltd 超硬合金製エンドミル
JP2018183854A (ja) * 2017-04-27 2018-11-22 株式会社アライドマテリアル 回転切削工具
WO2019044791A1 (ja) * 2017-08-30 2019-03-07 株式会社イシイコーポレーション テーパーリーマ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103071815A (zh) * 2013-01-18 2013-05-01 奥斯机(上海)精密工具有限公司 用于硬质合金加工的不等分割、不等导程刀具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0631919U (ja) * 1992-09-30 1994-04-26 株式会社日研工作所 複合型リーマ
JP2012091306A (ja) * 2010-10-29 2012-05-17 Hitachi Tool Engineering Ltd 超硬合金製エンドミル
JP2018183854A (ja) * 2017-04-27 2018-11-22 株式会社アライドマテリアル 回転切削工具
WO2019044791A1 (ja) * 2017-08-30 2019-03-07 株式会社イシイコーポレーション テーパーリーマ

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US20240286211A1 (en) 2024-08-29
JPWO2023276672A1 (https=) 2023-01-05
MX2023014542A (es) 2024-01-31
CN117580666A (zh) 2024-02-20
JP7555491B2 (ja) 2024-09-24

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