DE2521938C3 - Spiralbohrer - Google Patents

Spiralbohrer

Info

Publication number
DE2521938C3
DE2521938C3 DE2521938A DE2521938A DE2521938C3 DE 2521938 C3 DE2521938 C3 DE 2521938C3 DE 2521938 A DE2521938 A DE 2521938A DE 2521938 A DE2521938 A DE 2521938A DE 2521938 C3 DE2521938 C3 DE 2521938C3
Authority
DE
Germany
Prior art keywords
angle
drill
main cutting
cutting edge
twist drill
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
DE2521938A
Other languages
German (de)
English (en)
Other versions
DE2521938A1 (de
DE2521938B2 (de
Inventor
Keith Sheffield Siddall (Ver. Koenigreich)
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 SHEFFIELD (VER KOENIGREICH)
Original Assignee
OSBORN-MUSHET TOOLS Ltd SHEFFIELD (VER KOENIGREICH)
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 SHEFFIELD (VER KOENIGREICH) filed Critical OSBORN-MUSHET TOOLS Ltd SHEFFIELD (VER KOENIGREICH)
Publication of DE2521938A1 publication Critical patent/DE2521938A1/de
Publication of DE2521938B2 publication Critical patent/DE2521938B2/de
Application granted granted Critical
Publication of DE2521938C3 publication Critical patent/DE2521938C3/de
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)
DE2521938A 1974-05-17 1975-05-16 Spiralbohrer Expired DE2521938C3 (de)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
DE2521938A1 DE2521938A1 (de) 1975-11-27
DE2521938B2 DE2521938B2 (de) 1979-07-05
DE2521938C3 true DE2521938C3 (de) 1980-03-06

Family

ID=10174379

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2521938A Expired DE2521938C3 (de) 1974-05-17 1975-05-16 Spiralbohrer

Country Status (15)

Country Link
JP (1) JPS50156790A (US20020095090A1-20020718-M00002.png)
AU (1) AU500271B2 (US20020095090A1-20020718-M00002.png)
BR (1) BR7503011A (US20020095090A1-20020718-M00002.png)
CA (1) CA1022775A (US20020095090A1-20020718-M00002.png)
DE (1) DE2521938C3 (US20020095090A1-20020718-M00002.png)
ES (1) ES437919A1 (US20020095090A1-20020718-M00002.png)
FR (1) FR2270978A1 (US20020095090A1-20020718-M00002.png)
GB (1) GB1509912A (US20020095090A1-20020718-M00002.png)
IE (1) IE41050B1 (US20020095090A1-20020718-M00002.png)
IL (1) IL47302A (US20020095090A1-20020718-M00002.png)
IN (1) IN144887B (US20020095090A1-20020718-M00002.png)
IT (1) IT1038197B (US20020095090A1-20020718-M00002.png)
NL (1) NL7505612A (US20020095090A1-20020718-M00002.png)
SE (1) SE7505581L (US20020095090A1-20020718-M00002.png)
ZA (1) ZA753040B (US20020095090A1-20020718-M00002.png)

Families Citing this family (8)

* 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
GB2184046B (en) * 1985-12-13 1990-01-24 Skf & Dormer Tools Twist drill
JPS634211U (US20020095090A1-20020718-M00002.png) * 1986-06-23 1988-01-12
NL8821044A (nl) * 1988-10-21 1990-10-01 Zubkov Alexei Vladimirovich Spiraalboor.
EP1923157B1 (en) * 2001-07-10 2020-07-29 Mitsubishi Materials Corporation Drill
JP2006055965A (ja) * 2004-08-23 2006-03-02 Osg Corp 低加工硬化超硬ドリル
US20120003054A1 (en) * 2009-02-20 2012-01-05 Toyota Jidosha Kabushiki Kaisha Tap with drill and method for cutting internal thread

Also Published As

Publication number Publication date
AU500271B2 (en) 1979-05-17
IN144887B (US20020095090A1-20020718-M00002.png) 1978-07-22
IT1038197B (it) 1979-11-20
IL47302A0 (en) 1975-07-28
DE2521938A1 (de) 1975-11-27
IE41050B1 (en) 1979-10-10
IL47302A (en) 1978-03-10
GB1509912A (en) 1978-05-04
ZA753040B (en) 1976-04-28
DE2521938B2 (de) 1979-07-05
NL7505612A (nl) 1975-11-19
AU8125675A (en) 1976-11-25
SE7505581L (sv) 1975-11-18
BR7503011A (pt) 1976-04-20
FR2270978A1 (US20020095090A1-20020718-M00002.png) 1975-12-12
IE41050L (en) 1975-11-17
CA1022775A (en) 1977-12-20
ES437919A1 (es) 1977-01-01
JPS50156790A (US20020095090A1-20020718-M00002.png) 1975-12-18

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Legal Events

Date Code Title Description
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8328 Change in the person/name/address of the agent

Free format text: BERENDT, T., DIPL.-CHEM. DR., PAT.-ANW., 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee