IL42761A - Twist drill and method for making it - Google Patents

Twist drill and method for making it

Info

Publication number
IL42761A
IL42761A IL42761A IL4276173A IL42761A IL 42761 A IL42761 A IL 42761A IL 42761 A IL42761 A IL 42761A IL 4276173 A IL4276173 A IL 4276173A IL 42761 A IL42761 A IL 42761A
Authority
IL
Israel
Prior art keywords
land
primary
lands
drill
flank
Prior art date
Application number
IL42761A
Other languages
English (en)
Other versions
IL42761A0 (en
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 IL42761A0 publication Critical patent/IL42761A0/xx
Publication of IL42761A publication Critical patent/IL42761A/en

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
IL42761A 1972-07-21 1973-07-17 Twist drill and method for making it IL42761A (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IL42761A0 IL42761A0 (en) 1973-10-25
IL42761A true IL42761A (en) 1977-05-31

Family

ID=10364237

Family Applications (1)

Application Number Title Priority Date Filing Date
IL42761A IL42761A (en) 1972-07-21 1973-07-17 Twist drill and method for making it

Country Status (18)

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

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 (fr) * 1976-05-28 1977-12-05
JPS541102Y2 (fr) * 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 (fr) * 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
NL7310188A (fr) 1974-01-23
SE396027B (sv) 1977-09-05
JPS49124690A (fr) 1974-11-28
BE802619A (fr) 1973-11-16
CA986338A (en) 1976-03-30
ZA734644B (en) 1974-06-26
AT324072B (de) 1975-08-11
FR2193673B1 (fr) 1977-08-12
AU5801573A (en) 1975-01-16
CS181722B2 (en) 1978-03-31
ES417523A1 (es) 1976-03-01
FR2193673A1 (fr) 1974-02-22
DE2336886A1 (de) 1974-01-31
IL42761A0 (en) 1973-10-25
IT991331B (it) 1975-07-30
DD108226A5 (fr) 1974-09-12
AU470924B2 (en) 1976-04-01
CH558696A (de) 1975-02-14
IN138434B (fr) 1976-01-31
GB1432546A (en) 1976-04-22

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