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CH250713A - Method of sharpening twist drills. - Google Patents

Method of sharpening twist drills.

Info

Publication number
CH250713A
CH250713A CH250713DA CH250713A CH 250713 A CH250713 A CH 250713A CH 250713D A CH250713D A CH 250713DA CH 250713 A CH250713 A CH 250713A
Authority
CH
Switzerland
Prior art keywords
twist drills
sharpening twist
sharpening
drills
twist
Prior art date
Application number
Other languages
French (fr)
Inventor
Des Montres Zenith S Fabrique
Original Assignee
Zenith Montres
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 Zenith Montres filed Critical Zenith Montres
Publication of CH250713A publication Critical patent/CH250713A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
CH250713D 1945-11-16 1945-11-16 Method of sharpening twist drills. CH250713A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH250713T 1945-11-16

Publications (1)

Publication Number Publication Date
CH250713A true CH250713A (en) 1947-09-15

Family

ID=4468370

Family Applications (1)

Application Number Title Priority Date Filing Date
CH250713D CH250713A (en) 1945-11-16 1945-11-16 Method of sharpening twist drills.

Country Status (1)

Country Link
CH (1) CH250713A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037329A (en) * 1957-09-20 1962-06-05 Cincinnati Milling Machine Co Method and apparatus for grinding drills
DE3028960A1 (en) * 1979-09-06 1981-03-12 Megomat AG, Rüschlikon DRILL GRINDING MACHINE.
EP0249104A1 (en) * 1986-06-07 1987-12-16 Hertel Aktiengesellschaft Werkzeuge + Hartstoffe Method of grinding a twist drill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037329A (en) * 1957-09-20 1962-06-05 Cincinnati Milling Machine Co Method and apparatus for grinding drills
DE3028960A1 (en) * 1979-09-06 1981-03-12 Megomat AG, Rüschlikon DRILL GRINDING MACHINE.
EP0249104A1 (en) * 1986-06-07 1987-12-16 Hertel Aktiengesellschaft Werkzeuge + Hartstoffe Method of grinding a twist drill

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