GB1509912A - Twist drills - Google Patents

Twist drills

Info

Publication number
GB1509912A
GB1509912A GB22130/74A GB2213074A GB1509912A GB 1509912 A GB1509912 A GB 1509912A GB 22130/74 A GB22130/74 A GB 22130/74A GB 2213074 A GB2213074 A GB 2213074A GB 1509912 A GB1509912 A GB 1509912A
Authority
GB
United Kingdom
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
GB22130/74A
Other languages
English (en)
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
Priority to GB22130/74A priority Critical patent/GB1509912A/en
Priority to IE1033/75A priority patent/IE41050B1/xx
Priority to CA226,654A priority patent/CA1022775A/en
Priority to ZA00753040A priority patent/ZA753040B/xx
Priority to NL7505612A priority patent/NL7505612A/xx
Priority to IN971/CAL/1975A priority patent/IN144887B/en
Priority to IL47302A priority patent/IL47302A/xx
Priority to SE7505581A priority patent/SE7505581L/xx
Priority to BR3840/75D priority patent/BR7503011A/pt
Priority to FR7515147A priority patent/FR2270978A1/fr
Priority to IT23421/75A priority patent/IT1038197B/it
Priority to JP50058458A priority patent/JPS50156790A/ja
Priority to DE2521938A priority patent/DE2521938C3/de
Priority to ES437919A priority patent/ES437919A1/es
Priority to AU81256/75A priority patent/AU500271B2/en
Priority to US05/730,442 priority patent/US4065224A/en
Publication of GB1509912A publication Critical patent/GB1509912A/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
    • B23B2251/04—Angles, e.g. cutting angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/04—Angles, e.g. cutting angles
    • B23B2251/043—Helix angles
    • 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
    • B23B2251/40—Flutes, i.e. chip conveying grooves
    • B23B2251/406—Flutes, i.e. chip conveying grooves of special form not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
GB22130/74A 1974-05-17 1974-05-17 Twist drills Expired GB1509912A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
GB22130/74A GB1509912A (en) 1974-05-17 1974-05-17 Twist drills
IE1033/75A IE41050B1 (en) 1974-05-17 1975-05-08 An improvement in or relating to twist drills
CA226,654A CA1022775A (en) 1974-05-17 1975-05-09 Twist drills
ZA00753040A ZA753040B (en) 1974-05-17 1975-05-12 An improvement in or relating to twist drills
NL7505612A NL7505612A (nl) 1974-05-17 1975-05-13 Spiraalboor.
IN971/CAL/1975A IN144887B (enExample) 1974-05-17 1975-05-14
IL47302A IL47302A (en) 1974-05-17 1975-05-14 Twist drill having a constant lip rake angle along the cutting edge
SE7505581A SE7505581L (sv) 1974-05-17 1975-05-15 Anordning vid spiralborrar.
BR3840/75D BR7503011A (pt) 1974-05-17 1975-05-15 Aperfeicoamento em broca helicoidal
FR7515147A FR2270978A1 (enExample) 1974-05-17 1975-05-15
IT23421/75A IT1038197B (it) 1974-05-17 1975-05-16 Punta elicoidale in particolare per trapani
JP50058458A JPS50156790A (enExample) 1974-05-17 1975-05-16
DE2521938A DE2521938C3 (de) 1974-05-17 1975-05-16 Spiralbohrer
ES437919A ES437919A1 (es) 1974-05-17 1975-05-16 Perfeccionamientos en la fabricacion de brocas helicoidales.
AU81256/75A AU500271B2 (en) 1974-05-17 1975-05-19 Twist drill
US05/730,442 US4065224A (en) 1974-05-17 1976-10-07 Twist drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22130/74A GB1509912A (en) 1974-05-17 1974-05-17 Twist drills

Publications (1)

Publication Number Publication Date
GB1509912A true GB1509912A (en) 1978-05-04

Family

ID=10174379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22130/74A Expired GB1509912A (en) 1974-05-17 1974-05-17 Twist drills

Country Status (15)

Country Link
JP (1) JPS50156790A (enExample)
AU (1) AU500271B2 (enExample)
BR (1) BR7503011A (enExample)
CA (1) CA1022775A (enExample)
DE (1) DE2521938C3 (enExample)
ES (1) ES437919A1 (enExample)
FR (1) FR2270978A1 (enExample)
GB (1) GB1509912A (enExample)
IE (1) IE41050B1 (enExample)
IL (1) IL47302A (enExample)
IN (1) IN144887B (enExample)
IT (1) IT1038197B (enExample)
NL (1) NL7505612A (enExample)
SE (1) SE7505581L (enExample)
ZA (1) ZA753040B (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184046A (en) * 1985-12-13 1987-06-17 Skf & Dormer Tools Twist drill
GB2417447A (en) * 2004-08-23 2006-03-01 Osg Corp A twist drill bit
EP2366478A3 (en) * 2001-07-10 2012-04-18 Mitsubishi Materials Corporation Drill

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331286A (en) * 1976-09-02 1978-03-24 Riyousuke Hosoi Ball end mill
SE8300910L (sv) * 1983-02-18 1984-08-19 Santrade Ltd Sammansatt kropp bestaende av ett substrat belagt med hart, slitstarkt ytskikt
JPS634211U (enExample) * 1986-06-23 1988-01-12
JPH03502664A (ja) * 1988-10-21 1991-06-20 ズブコフ　アレクセイ　ウラディミロヴィッチ スパイラルドリル
WO2010095249A1 (ja) * 2009-02-20 2010-08-26 オーエスジー株式会社 ドリル付きタップ

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184046A (en) * 1985-12-13 1987-06-17 Skf & Dormer Tools Twist drill
GB2184046B (en) * 1985-12-13 1990-01-24 Skf & Dormer Tools Twist drill
EP2366478A3 (en) * 2001-07-10 2012-04-18 Mitsubishi Materials Corporation Drill
EP1923157A3 (en) * 2001-07-10 2012-09-05 Mitsubishi Materials Corporation Drill
GB2417447A (en) * 2004-08-23 2006-03-01 Osg Corp A twist drill bit

Also Published As

Publication number Publication date
IT1038197B (it) 1979-11-20
IN144887B (enExample) 1978-07-22
FR2270978A1 (enExample) 1975-12-12
DE2521938B2 (de) 1979-07-05
ES437919A1 (es) 1977-01-01
CA1022775A (en) 1977-12-20
IE41050L (en) 1975-11-17
JPS50156790A (enExample) 1975-12-18
AU8125675A (en) 1976-11-25
SE7505581L (sv) 1975-11-18
DE2521938C3 (de) 1980-03-06
DE2521938A1 (de) 1975-11-27
AU500271B2 (en) 1979-05-17
NL7505612A (nl) 1975-11-19
IE41050B1 (en) 1979-10-10
ZA753040B (en) 1976-04-28
IL47302A (en) 1978-03-10
BR7503011A (pt) 1976-04-20
IL47302A0 (en) 1975-07-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee