FR656841A - Drill bit for cold drilling very hard metals - Google Patents

Drill bit for cold drilling very hard metals

Info

Publication number
FR656841A
FR656841A FR656841DA FR656841A FR 656841 A FR656841 A FR 656841A FR 656841D A FR656841D A FR 656841DA FR 656841 A FR656841 A FR 656841A
Authority
FR
France
Prior art keywords
drill bit
hard metals
cold drilling
drilling
cold
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
Other languages
French (fr)
Inventor
Jules-Ernest Jacquet
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 filed Critical
Application granted granted Critical
Publication of FR656841A publication Critical patent/FR656841A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/14—Configuration of the cutting part, i.e. the main 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
    • B23B2251/48—Chip breakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/56—Guiding pads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR656841D 1928-06-30 1928-06-30 Drill bit for cold drilling very hard metals Expired FR656841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR656841T 1928-06-30

Publications (1)

Publication Number Publication Date
FR656841A true FR656841A (en) 1929-05-14

Family

ID=9008059

Family Applications (1)

Application Number Title Priority Date Filing Date
FR656841D Expired FR656841A (en) 1928-06-30 1928-06-30 Drill bit for cold drilling very hard metals

Country Status (1)

Country Link
FR (1) FR656841A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093395A (en) * 1977-03-14 1978-06-06 Mcdonnell Douglas Corporation Drill and combined drill countersink

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093395A (en) * 1977-03-14 1978-06-06 Mcdonnell Douglas Corporation Drill and combined drill countersink

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