AU470924B2 - An improvements in or relating to twist drills - Google Patents

An improvements in or relating to twist drills

Info

Publication number
AU470924B2
AU470924B2 AU58015/73A AU5801573A AU470924B2 AU 470924 B2 AU470924 B2 AU 470924B2 AU 58015/73 A AU58015/73 A AU 58015/73A AU 5801573 A AU5801573 A AU 5801573A AU 470924 B2 AU470924 B2 AU 470924B2
Authority
AU
Australia
Prior art keywords
relating
twist drills
drills
twist
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.)
Expired
Application number
AU58015/73A
Other languages
English (en)
Other versions
AU5801573A (en
Inventor
Siddall Keith
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.)
OSBORN-MUSHET TOOLS Ltd
Original Assignee
OSBORN-MUSHET TOOLS 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 OSBORN-MUSHET TOOLS Ltd filed Critical OSBORN-MUSHET TOOLS Ltd
Publication of AU5801573A publication Critical patent/AU5801573A/en
Application granted granted Critical
Publication of AU470924B2 publication Critical patent/AU470924B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/20—Number of cutting edges
    • B23B2251/204—Four cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/24—Overall form of drilling tools
    • B23B2251/241—Cross sections of the diameter of the drill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/44—Margins, i.e. the narrow portion of the land which is not cut away to provide clearance on the circumferential surface
    • B23B2251/443—Double margin drills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
AU58015/73A 1972-07-21 1973-07-12 An improvements in or relating to twist drills Expired AU470924B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3432572A GB1432546A (en) 1972-07-21 1972-07-21 Twist drills
GBGB34325/72 1972-07-21

Publications (2)

Publication Number Publication Date
AU5801573A AU5801573A (en) 1975-01-16
AU470924B2 true AU470924B2 (en) 1976-04-01

Family

ID=10364237

Family Applications (1)

Application Number Title Priority Date Filing Date
AU58015/73A Expired AU470924B2 (en) 1972-07-21 1973-07-12 An improvements in or relating to twist drills

Country Status (18)

Country Link
JP (1) JPS49124690A (es)
AT (1) AT324072B (es)
AU (1) AU470924B2 (es)
BE (1) BE802619A (es)
CA (1) CA986338A (es)
CH (1) CH558696A (es)
CS (1) CS181722B2 (es)
DD (1) DD108226A5 (es)
DE (1) DE2336886A1 (es)
ES (1) ES417523A1 (es)
FR (1) FR2193673B1 (es)
GB (1) GB1432546A (es)
IL (1) IL42761A (es)
IN (1) IN138434B (es)
IT (1) IT991331B (es)
NL (1) NL7310188A (es)
SE (1) SE396027B (es)
ZA (1) ZA734644B (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923925B2 (ja) * 1975-12-29 1984-06-06 カブシキガイシヤ ササクラキカイセイサクシヨ ドリルリ−マ−フクゴウセンコウグ
JPS52160183U (es) * 1976-05-28 1977-12-05
JPS541102Y2 (es) * 1976-06-10 1979-01-19
JPS59140116U (ja) * 1983-03-07 1984-09-19 富士精工株式会社 ガイド部付ツイストドリル
DE3325149A1 (de) * 1983-07-12 1985-01-24 Gühring, Gottlieb, 7470 Albstadt Zweischneidiges wendelbohrwerkzeug als kombiniertes zentrier-, bohr- und aufbohrwerkzeug
JPS61249209A (ja) * 1985-12-23 1986-11-06 Toyoda Gosei Co Ltd リ−マ
CH670968A5 (es) * 1986-11-25 1989-07-31 Sphinxwerke Mueller Ag
US4756650A (en) * 1986-11-26 1988-07-12 Kabushiki Kaisha Kobe Seiko Sho Twist drill
DE3820485C1 (en) * 1988-06-16 1989-08-24 Helmut Dipl.-Ing. 1000 Berlin De Krauss Helical flutes in drill bit - incorporates straight sloping sides and circular rounded floor portion
JPH0731926Y2 (ja) * 1989-01-10 1995-07-26 愛三工業株式会社 高送り用バニシングドリル
GB9606370D0 (en) * 1996-03-26 1996-06-05 Dormer Tools Sheffield Ltd Improvements in or relating to twist drills
GB2393681A (en) * 2002-10-03 2004-04-07 Black & Decker Inc Masonry drilling tool
JP2006095662A (ja) * 2004-09-30 2006-04-13 Omi Kogyo Co Ltd バニシング穴あけ工具
DE102009039170B4 (de) * 2009-08-27 2022-01-20 Kennametal Inc. Bohrwerkzeug
JP5939001B2 (ja) * 2012-01-16 2016-06-22 三菱日立ツール株式会社 ドリル
JP2017202541A (ja) * 2016-05-11 2017-11-16 有限会社栄進機工 ドリルリーマ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063753A (en) * 1932-09-27 1936-12-08 Edward J Pohlman Reamer

Also Published As

Publication number Publication date
AU5801573A (en) 1975-01-16
IN138434B (es) 1976-01-31
IT991331B (it) 1975-07-30
NL7310188A (es) 1974-01-23
JPS49124690A (es) 1974-11-28
CS181722B2 (en) 1978-03-31
CH558696A (de) 1975-02-14
SE396027B (sv) 1977-09-05
FR2193673A1 (es) 1974-02-22
CA986338A (en) 1976-03-30
FR2193673B1 (es) 1977-08-12
IL42761A (en) 1977-05-31
BE802619A (fr) 1973-11-16
IL42761A0 (en) 1973-10-25
GB1432546A (en) 1976-04-22
ES417523A1 (es) 1976-03-01
ZA734644B (en) 1974-06-26
DE2336886A1 (de) 1974-01-31
DD108226A5 (es) 1974-09-12
AT324072B (de) 1975-08-11

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