JP2021065967A - Drill - Google Patents

Drill Download PDF

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Publication number
JP2021065967A
JP2021065967A JP2019192651A JP2019192651A JP2021065967A JP 2021065967 A JP2021065967 A JP 2021065967A JP 2019192651 A JP2019192651 A JP 2019192651A JP 2019192651 A JP2019192651 A JP 2019192651A JP 2021065967 A JP2021065967 A JP 2021065967A
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JP
Japan
Prior art keywords
drill
cutting edge
blade
ridge
tip
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.)
Pending
Application number
JP2019192651A
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Japanese (ja)
Inventor
義一 石川
Yoshikazu Ishikawa
義一 石川
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Giken Co Ltd
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Giken Co Ltd
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 Giken Co Ltd filed Critical Giken Co Ltd
Priority to JP2019192651A priority Critical patent/JP2021065967A/en
Priority to PCT/JP2020/039734 priority patent/WO2021079939A1/en
Publication of JP2021065967A publication Critical patent/JP2021065967A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

To provide a drill that can suppress occurrence of a burr.SOLUTION: In the drill, at least one cutting edge is provided at a tip thereof, where a ridge-line of the cutting blade includes a plurality of convex ridge-lines formed into convex curve lines protruding in a direction of the tip of the drill. Preferably, the ridge-line of the cutting edge includes two continuous convex ridge-lines retreating outward from a center of the drill as a whole. A drill 1 for CFRTP-boring has a main blade 100 and a sub blade 200, where the main blade 100 includes two continuous convex ridge-lines.SELECTED DRAWING: Figure 1

Description

本発明は、ドリルに関する。 The present invention relates to a drill.

例えば、特許文献１には、ドリル本体１０の先端側外周に切屑排出溝１３が形成され、ドリル本体１０の先端側に向けて開口する凹溝１５に、切刃２２を備えた刃先部材１８が固定されてなるドリルにおいて、刃先部材１８は、ダイヤモンド層の両側に超硬合金層が配置され、切刃２２がダイヤモンド層に形成されており、切刃２２の先端角αが１３５°≦α≦１４５°の範囲内に設定され、切屑排出溝１３は、後端側に向かうにしたがいドリル回転方向Ｔ後方側に向けてねじれ角θでねじれており、ねじれ角θが２５°≦θ≦３５°の範囲内に設定され、ドリル本体１０には、先端側に向けて開口する流体供給孔３０が穿設されていることを特徴とするドリルが開示されている。 For example, in Patent Document 1, a chip discharge groove 13 is formed on the outer periphery of the drill body 10 on the tip end side, and a cutting edge member 18 having a cutting edge 22 is provided in a recessed groove 15 that opens toward the tip end side of the drill body 10. In the fixed drill, the cutting edge member 18 has cemented carbide layers arranged on both sides of the diamond layer, the cutting edge 22 is formed in the diamond layer, and the tip angle α of the cutting edge 22 is 135 ° ≦ α ≦. The chip discharge groove 13 is set within the range of 145 °, and the chip discharge groove 13 is twisted at a twist angle θ toward the rear side of the drill rotation direction T toward the rear end side, and the twist angle θ is 25 ° ≤ θ ≤ 35 °. A drill is disclosed in which the drill body 10 is provided with a fluid supply hole 30 which is set within the range of the above and is open toward the tip end side.

特開２００８−１４２８３４Japanese Patent Application Laid-Open No. 2008-142834

バリの発生を抑制できるドリルを提供することを目的とする。 It is an object of the present invention to provide a drill capable of suppressing the occurrence of burrs.

本発明に係るドリルは、少なくとも一つの切れ刃が先端に設けられたドリルであって、切れ刃の稜線が、ドリルの先端方向に突出した凸曲線となった凸稜線を複数含む。
好適には、前記切れ刃の稜線は、全体として、ドリルの中心から外周側に向けて後退しており、連続する２つの凸稜線を含む。 The drill according to the present invention is a drill in which at least one cutting edge is provided at the tip thereof, and includes a plurality of convex ridge lines in which the ridge line of the cutting edge is a convex curve protruding toward the tip end direction of the drill.
Preferably, the ridgeline of the cutting edge is recessed from the center of the drill toward the outer peripheral side as a whole, and includes two continuous convex ridgelines.

バリの発生を抑制できる。 The occurrence of burrs can be suppressed.

ＣＦＲＰ穿孔用であるドリル１を例示する図である。It is a figure which illustrates drill 1 for CFRP drilling. ＣＦＲＰ穿孔用である３枚刃を有するドリル１を例示する図である。It is a figure which illustrates the drill 1 which has 3 blades for CFRP drilling. ＣＦＲＴＰ穿孔用であるドリル１を例示する図である。It is a figure which exemplifies the drill 1 for CFRTP drilling. ＣＦＲＴＰ穿孔用である主刃１００及び副刃２００を有するドリル１を例示する図である。It is a figure which illustrates the drill 1 which has the main blade 100 and the auxiliary blade 200 for CFRTP drilling. アルミニウム穿孔用であるドリル１を例示する図である。It is a figure which illustrates drill 1 for aluminum drilling. アルミニウム穿孔用である主刃１００及び副刃２００を有するドリル１を例示する図である。It is a figure which illustrates the drill 1 which has the main blade 100 and the auxiliary blade 200 for aluminum drilling. 鉄穿孔用であるドリル１を例示する図である。It is a figure which illustrates drill 1 for iron drilling. 鉄穿孔用である主刃１００及び副刃２００を有するドリル１を例示する図である。It is a figure which illustrates the drill 1 which has the main blade 100 and the auxiliary blade 200 for iron drilling.

以下、本発明の実施形態を、図面を参照して説明する。
ドリル１は、図１〜図８に例示するように、少なくとも一つの切れ刃が先端に設けられたドリルであって、切れ刃の稜線が、ドリルの先端方向に突出した凸曲線となった凸稜線を複数含む。
好適には、前記切れ刃の稜線は、全体として、ドリルの中心から外周に向けて後退しており、連続する２つの凸稜線を含む。
ＣＦＲＴＰ穿孔用のドリル１は、主刃１００及び副刃２００を有し、主刃１００は、連続する２つの凸稜線（第１凸稜刃１０及び第２凸稜刃１２）を含む。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As illustrated in FIGS. 1 to 8, the drill 1 is a drill in which at least one cutting edge is provided at the tip, and the ridgeline of the cutting edge is a convex curve protruding toward the tip of the drill. Includes multiple ridges.
Preferably, the ridgeline of the cutting edge is recessed from the center of the drill toward the outer circumference as a whole, and includes two continuous convex ridgelines.
The drill 1 for CFRTP drilling has a main blade 100 and an auxiliary blade 200, and the main blade 100 includes two continuous convex ridge lines (first convex ridge blade 10 and second convex ridge blade 12).

１…ドリル
１００…主刃
２００…副刃
１０、２０…第１凸稜刃
１２、２２…第２凸稜刃
1 ... Drill 100 ... Main blade 200 ... Secondary blade 10, 20 ... 1st convex ridge blade 12, 22 ... 2nd convex ridge blade

Claims (2)

少なくとも一つの切れ刃が先端に設けられたドリルであって、
切れ刃の稜線が、ドリルの先端方向に突出した凸曲線となった凸稜線を複数含むドリル。 A drill with at least one cutting edge at the tip
A drill that includes a plurality of convex ridges in which the ridge of the cutting edge is a convex curve protruding toward the tip of the drill. 前記切れ刃の稜線は、全体として、ドリルの中心から外周に向けて後退しており、連続する２つの凸稜線を含む
請求項１に記載のドリル。 The drill according to claim 1, wherein the ridgeline of the cutting edge is recessed from the center of the drill toward the outer circumference as a whole, and includes two continuous convex ridgelines.
JP2019192651A 2019-10-23 2019-10-23 Drill Pending JP2021065967A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019192651A JP2021065967A (en) 2019-10-23 2019-10-23 Drill
PCT/JP2020/039734 WO2021079939A1 (en) 2019-10-23 2020-10-22 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019192651A JP2021065967A (en) 2019-10-23 2019-10-23 Drill

Publications (1)

Publication Number Publication Date
JP2021065967A true JP2021065967A (en) 2021-04-30

Family

ID=75620075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019192651A Pending JP2021065967A (en) 2019-10-23 2019-10-23 Drill

Country Status (2)

Country Link
JP (1) JP2021065967A (en)
WO (1) WO2021079939A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4385648A1 (en) 2022-11-29 2024-06-19 Tungaloy Corporation Drilling tool

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20307258U1 (en) * 2003-05-09 2004-09-16 Gühring, Jörg, Dr. Drilling tool for machining cast materials
JP4746969B2 (en) * 2005-11-24 2011-08-10 Ｎｅｘｔ Ｉ＆Ｄ株式会社 Twist drill
JP5087735B2 (en) * 2006-08-04 2012-12-05 富士重工業株式会社 drill
US8979445B2 (en) * 2010-10-15 2015-03-17 Hanita Metal Factory Ltd Cutting tip and rotary cutting tool employing same
US20170066062A1 (en) * 2015-09-08 2017-03-09 Mitsubishi Materials Corporation Drill
GB201706686D0 (en) * 2017-04-27 2017-06-14 Rolls Royce Plc A cutting tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4385648A1 (en) 2022-11-29 2024-06-19 Tungaloy Corporation Drilling tool

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WO2021079939A1 (en) 2021-04-29

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