CA986338A - Twist drills - Google Patents

Twist drills

Info

Publication number
CA986338A
CA986338A CA176,008A CA176008A CA986338A CA 986338 A CA986338 A CA 986338A CA 176008 A CA176008 A CA 176008A CA 986338 A CA986338 A CA 986338A
Authority
CA
Canada
Prior art keywords
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
CA176,008A
Other versions
CA176008S (en
Inventor
Keith Siddall
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
Application granted granted Critical
Publication of CA986338A publication Critical patent/CA986338A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B51/00Tools for drilling machines
    • B23B51/02Twist drills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2251/00Details of tools for drilling machines
    • B23B2251/18Configuration of the drill point
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2251/00Details of tools for drilling machines
    • B23B2251/20Number of cutting edges
    • B23B2251/204Four cutting edges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2251/00Details of tools for drilling machines
    • B23B2251/24Overall form of drilling tools
    • B23B2251/241Cross sections of the diameter of the drill
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2251/00Details of tools for drilling machines
    • B23B2251/44Margins, i.e. the narrow portion of the land which is not cut away to provide clearance on the circumferential surface
    • B23B2251/443Double margin drills
CA176,008A 1972-07-21 1973-07-09 Twist drills Expired CA986338A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA986338A true CA986338A (en) 1976-03-30

Family

ID=10364237

Family Applications (1)

Application Number Title Priority Date Filing Date
CA176,008A Expired CA986338A (en) 1972-07-21 1973-07-09 Twist drills

Country Status (18)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9085033B2 (en) 2009-08-27 2015-07-21 Kennametal Inc. Drilling tool

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923925B2 (en) * 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 Drill reamer
JPS52160183U (en) * 1976-05-28 1977-12-05
JPS541102Y2 (en) * 1976-06-10 1979-01-19
JPS59140116U (en) * 1983-03-07 1984-09-19 富士精工株式会社 Twist drill with guide part
DE3325149A1 (en) * 1983-07-12 1985-01-24 Gühring, Gottlieb, 7470 Albstadt Two-lipped twist drill as a combined centring, drilling and boring tool
JPS61249209A (en) * 1985-12-23 1986-11-06 Toyoda Gosei Co Ltd Reamer
CH670968A5 (en) * 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 (en) * 1989-01-10 1995-07-26 愛三工業株式会社 High feed burnishing drill
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 (en) * 2004-09-30 2006-04-13 Omi Kogyo Co Ltd Burnishing boring tool
JP5939001B2 (en) * 2012-01-16 2016-06-22 三菱日立ツール株式会社 drill
JP2017202541A (en) * 2016-05-11 2017-11-16 有限会社栄進機工 Drill reamer

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9085033B2 (en) 2009-08-27 2015-07-21 Kennametal Inc. Drilling tool

Also Published As

Publication number Publication date
IL42761A (en) 1977-05-31
CH558696A (en) 1975-02-14
AT324072B (en) 1975-08-11
BE802619A (en) 1973-11-16
CS181722B2 (en) 1978-03-31
DE2336886A1 (en) 1974-01-31
DD108226A5 (en) 1974-09-12
AU5801573A (en) 1975-01-16
IL42761A0 (en) 1973-10-25
IT991331B (en) 1975-07-30
JPS49124690A (en) 1974-11-28
IN138434B (en) 1976-01-31
ES417523A1 (en) 1976-03-01
FR2193673B1 (en) 1977-08-12
AU470924B2 (en) 1976-04-01
ZA734644B (en) 1974-06-26
NL7310188A (en) 1974-01-23
SE396027B (en) 1977-09-05
FR2193673A1 (en) 1974-02-22
GB1432546A (en) 1976-04-22

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