KR880000178A - 트위스트 드릴 - Google Patents

트위스트 드릴 Download PDF

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Publication number
KR880000178A
KR880000178A KR870005707A KR870005707A KR880000178A KR 880000178 A KR880000178 A KR 880000178A KR 870005707 A KR870005707 A KR 870005707A KR 870005707 A KR870005707 A KR 870005707A KR 880000178 A KR880000178 A KR 880000178A
Authority
KR
South Korea
Prior art keywords
drill
grinding
grinding wheel
cutting edge
axis
Prior art date
Application number
KR870005707A
Other languages
English (en)
Other versions
KR910004549B1 (ko
Inventor
티칼 프란쯔
크렌쨀 울리히
Original Assignee
칼 게.헤르텔
헤르텔 아.게, 베르크조이게+하르쯔토페
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
Priority claimed from DE19863619245 external-priority patent/DE3619245A1/de
Application filed by 칼 게.헤르텔, 헤르텔 아.게, 베르크조이게+하르쯔토페 filed Critical 칼 게.헤르텔
Publication of KR880000178A publication Critical patent/KR880000178A/ko
Application granted granted Critical
Publication of KR910004549B1 publication Critical patent/KR910004549B1/ko

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/18—Configuration of the drill point
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/905—Having stepped cutting edges
    • Y10T408/906—Axially spaced
    • Y10T408/9065—Axially spaced with central lead
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
    • Y10T408/9097—Spiral channel

Abstract

내용 없음

Description

트위스트 드릴
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 트위스트 드릴의 전면도. 제 2 도는 제 1 도의 화살표(Ⅰ) 방향에서 본 상기 드릴의 측부도. 제 3 도는 제 2 도의 화살표 Ⅲ에 대응하는 측부도.

Claims (2)

  1. 타원면 연삭에 의하여 그라운드되는 주 플랭크(10)을 가진(트위스트 드릴) 특히, 단단한 금속 드릴에 있어서,
    (가) 드릴(1)의 코어 두께 K (4)가 드릴 구경(8)의 25 내지 40퍼센트이며 ;
    (나) 드릴 포인트 연삭의 시작에서, 주 플랭크(10)을 형성할려는 상기 연삭 휘일(14)의 원주 측면(15)은 상기 드릴축을 넘어서 보호되며 ; 돌출 정도(18)는 드릴구경(8)의 3 내지 15퍼센트이며 ;
    (다) 드릴 포인트 연삭을 계속하면서, 상기 연삭휘일(14)은, 주 플랭크에 대한 드릴 포인트 연삭의 단부에서, 드릴 축(7)의 중심 전방으로의 거리(20)를갖을 때까지 중심너머 위치(방사 이송 19)의 외부 방사 방향으로 이동을 계속하며 ; 이것은 드릴구경(8)의 7 내지 14퍼센트이며 ;
    (라) 상기 전체 드릴 포인트 연삭 범위 전체에 걸쳐서 또한 상기 주 절단 에지(3)의 드릴 포인트 연삭으로부터의 시작에 있어서, 상기 모선(11)의 축 이송(21)은 상기 드릴의 축방향으로 점진적으로 증가하며 결국, 상기 주 절단 에지(3)로부터의 증가하는 거리와 함께, 상기 주 절단 에지의 공차 각도가 증가하는 것을 특징으로 하는 트위스트 드릴.
  2. 제 1항에 있어서, 상기 트위스트 드릴이 적어도 130도의 포인트 각도 0-(12)를 갖는 것을 특징으로 하는 트위스트 드릴.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870005707A 1986-06-07 1987-06-05 트위스트 드릴 KR910004549B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEP936192457 1986-06-07
DEP3619245.7 1986-06-07
DE19863619245 DE3619245A1 (de) 1985-09-18 1986-06-07 Spiralbohrer

Publications (2)

Publication Number Publication Date
KR880000178A true KR880000178A (ko) 1988-03-24
KR910004549B1 KR910004549B1 (ko) 1991-07-06

Family

ID=6302541

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870005707A KR910004549B1 (ko) 1986-06-07 1987-06-05 트위스트 드릴

Country Status (8)

Country Link
US (1) US4826368A (ko)
EP (1) EP0249104B1 (ko)
JP (2) JPS6339707A (ko)
KR (1) KR910004549B1 (ko)
AT (1) ATE72157T1 (ko)
CA (1) CA1279212C (ko)
DE (1) DE3776414D1 (ko)
ES (1) ES2029456T3 (ko)

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EP0971807B1 (de) * 1997-03-25 2003-10-22 GÜHRING, Jörg, Dr. Bohrwerkzeug
DE19726984A1 (de) * 1997-06-25 1999-01-07 Kennametal Inc Bohrer zum Trockenbohren
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US6283682B1 (en) * 1997-09-30 2001-09-04 Jerald D. Plummer Helically fluted twist drill device
DE19955172A1 (de) * 1999-11-16 2001-05-23 Kennametal Inc Verfahren zum Schleifen einer Bohrspitze und Bohrerspitze
US6443674B1 (en) * 2000-05-19 2002-09-03 Ics Cutting Tools, Inc. Self-centering twist drill having a modified flat bottom section and a helical crown point tip
US9199315B2 (en) 2000-06-02 2015-12-01 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill
JP2002144125A (ja) * 2000-08-31 2002-05-21 Mitsubishi Materials Corp 穴明け工具
US6585460B1 (en) * 2000-11-13 2003-07-01 General Electric Company Drill having machine grindable cutting edge
US6739809B2 (en) 2001-09-19 2004-05-25 Kennametal Inc. Cutting point for a drill
US7832966B2 (en) * 2003-01-30 2010-11-16 Kennametal Inc. Drill for making flat bottom hole
DE10337203A1 (de) 2003-08-13 2005-03-31 Kennametal Inc. Bohrwerkzeug
DE102004058163A1 (de) * 2004-12-02 2006-06-08 Kennametal Inc. Bohr-/Faswerkzeug
SE528917C2 (sv) * 2005-07-05 2007-03-13 Sandvik Intellectual Property Spiralborr
US7950880B2 (en) * 2006-10-18 2011-05-31 Kennametal Inc. Spiral flute tap
DE102008004564B4 (de) * 2008-01-15 2013-04-11 EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge Bohrwerkzeug mit Ausspitzung
US8740515B2 (en) 2008-09-03 2014-06-03 Black & Decker Inc. Metal cutting drill bit
US8408850B2 (en) * 2009-06-16 2013-04-02 Kennametal Inc. Twist drill with negative axial rake transition between the lip and the secondary cutting edge
DE102010006796B4 (de) 2010-02-04 2011-12-08 Kennametal Inc. Verfahren zur Herstellung eines Bohrers, sowie Bohrer
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US9468981B2 (en) * 2013-12-31 2016-10-18 Shenzhen Jinzhou Precision Technology Corp. Micro-drill and method for manufacturing the micro-drill
DE102015210817B4 (de) * 2015-06-12 2021-06-10 Kennametal Inc. Rotationswerkzeug sowie Verfahren zur Herstellung eines Rotationswerkzeugs
DE102018205681B4 (de) * 2018-04-13 2023-06-15 Kennametal Inc. Verfahren zur Herstellung eines Schneidwerkzeugs und Schneidwerkzeug
CN108972169B (zh) * 2018-07-25 2020-06-02 北京理工大学 一种非共轴螺旋后刀面微细钻削刀具及其刃磨方法
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Also Published As

Publication number Publication date
ATE72157T1 (de) 1992-02-15
CA1279212C (en) 1991-01-22
US4826368A (en) 1989-05-02
ES2029456T3 (es) 1992-08-16
JPH0624810U (ja) 1994-04-05
KR910004549B1 (ko) 1991-07-06
EP0249104A1 (de) 1987-12-16
DE3776414D1 (de) 1992-03-12
JP2562154Y2 (ja) 1998-02-10
JPS6339707A (ja) 1988-02-20
EP0249104B1 (de) 1992-01-29

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