FR789315A - Spring center drill - Google Patents

Spring center drill

Info

Publication number
FR789315A
FR789315A FR789315DA FR789315A FR 789315 A FR789315 A FR 789315A FR 789315D A FR789315D A FR 789315DA FR 789315 A FR789315 A FR 789315A
Authority
FR
France
Prior art keywords
center drill
spring center
spring
drill
center
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
Wilhelm Johan Van Vossen
Cornelis Robertson
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 FR789315A publication Critical patent/FR789315A/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
    • B23B51/04—Drills for trepanning
    • B23B51/0426—Drills for trepanning with centering devices
    • 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
    • B23B2251/20—Number of cutting edges
    • B23B2251/204—Four 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
    • B23B2251/60—Drills with pilots
    • B23B2251/603—Detachable pilots, e.g. in the form of a drill
    • B23B2251/606—Detachable pilots, e.g. in the form of a drill being a twist drill

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
FR789315D 1935-04-29 1935-04-27 Spring center drill Expired FR789315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1278035A GB434703A (en) 1935-04-29 1935-04-29 Improvements in or relating to twist drills and the like

Publications (1)

Publication Number Publication Date
FR789315A true FR789315A (en) 1935-10-26

Family

ID=10010977

Family Applications (1)

Application Number Title Priority Date Filing Date
FR789315D Expired FR789315A (en) 1935-04-29 1935-04-27 Spring center drill

Country Status (3)

Country Link
BE (1) BE409121A (en)
FR (1) FR789315A (en)
GB (1) GB434703A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2332832A1 (en) * 1975-11-26 1977-06-24 Wozar Tiberius TOOL FOR DRILLING WITH CORE
DE9110056U1 (en) * 1991-08-14 1991-11-07 W + E Mueller Gmbh, 8531 Ipsheim, De
DE4101678A1 (en) * 1991-01-22 1992-07-23 Manfred Rosenkranz Combined boring and centering tool - has one-piece shaft and flange whose shoulders act as frictional faces against chuck face and prevent tool slippage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113405A (en) * 1977-08-08 1978-09-12 Dillinger Lester L Apparatus for drilling or reaming
DE2838348C2 (en) * 1978-09-02 1982-10-28 Hans Gustav 7130 Mühlacker Neuhäuser Device for forming a bone opening

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2332832A1 (en) * 1975-11-26 1977-06-24 Wozar Tiberius TOOL FOR DRILLING WITH CORE
DE4101678A1 (en) * 1991-01-22 1992-07-23 Manfred Rosenkranz Combined boring and centering tool - has one-piece shaft and flange whose shoulders act as frictional faces against chuck face and prevent tool slippage
DE9110056U1 (en) * 1991-08-14 1991-11-07 W + E Mueller Gmbh, 8531 Ipsheim, De

Also Published As

Publication number Publication date
GB434703A (en) 1935-09-06
BE409121A (en) 1935-05-31

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