FR725363A - Mèche hélicoïdale avec arêtes tranchantes inférieures à gradins - Google Patents

Mèche hélicoïdale avec arêtes tranchantes inférieures à gradins

Info

Publication number
FR725363A
FR725363A FR725363DA FR725363A FR 725363 A FR725363 A FR 725363A FR 725363D A FR725363D A FR 725363DA FR 725363 A FR725363 A FR 725363A
Authority
FR
France
Prior art keywords
cutting edges
lower cutting
stepped lower
helical bit
helical
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
English (en)
French (fr)
Inventor
Robert Immanuel Grossle
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 FR725363A publication Critical patent/FR725363A/fr
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
    • B23B2251/18—Configuration of the drill point
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR725363D 1930-11-25 1931-10-28 Mèche hélicoïdale avec arêtes tranchantes inférieures à gradins Expired FR725363A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE725363X 1930-11-25

Publications (1)

Publication Number Publication Date
FR725363A true FR725363A (fr) 1932-05-11

Family

ID=6634936

Family Applications (1)

Application Number Title Priority Date Filing Date
FR725363D Expired FR725363A (fr) 1930-11-25 1931-10-28 Mèche hélicoïdale avec arêtes tranchantes inférieures à gradins

Country Status (2)

Country Link
BE (1) BE383808A (enrdf_load_stackoverflow)
FR (1) FR725363A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008046520A1 (de) * 2006-10-13 2008-04-24 Kennametal Inc. Bohrerspitze für ein bohrwerkzeug
US7832966B2 (en) 2003-01-30 2010-11-16 Kennametal Inc. Drill for making flat bottom hole
EP2239075A3 (en) * 2009-04-07 2011-05-25 Sandvik Intellectual Property AB Solid step drill
CN101511512B (zh) * 2006-10-13 2012-04-04 钴碳化钨硬质合金公司 用于钻孔工具的钻尖
DE102015013247A1 (de) 2015-10-08 2017-04-13 Walter Bauer Bohrer mit Konteraufbohrfunktion und Konteraufbohrverfahren für Leichtbauwerkstoffe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7832966B2 (en) 2003-01-30 2010-11-16 Kennametal Inc. Drill for making flat bottom hole
WO2008046520A1 (de) * 2006-10-13 2008-04-24 Kennametal Inc. Bohrerspitze für ein bohrwerkzeug
CN101511512B (zh) * 2006-10-13 2012-04-04 钴碳化钨硬质合金公司 用于钻孔工具的钻尖
RU2452597C2 (ru) * 2006-10-13 2012-06-10 Кеннаметал Инк. Вершина сверла для сверлильного инструмента
US8550756B2 (en) 2006-10-13 2013-10-08 Kennametal Inc. Drill bit for drilling having at least two cutting edges, each with two cutting portions and a non-cutting portion between the two cutting portions
EP2239075A3 (en) * 2009-04-07 2011-05-25 Sandvik Intellectual Property AB Solid step drill
US9004826B2 (en) 2009-04-07 2015-04-14 Sandvik Intellectual Property Ab Solid step drill
DE102015013247A1 (de) 2015-10-08 2017-04-13 Walter Bauer Bohrer mit Konteraufbohrfunktion und Konteraufbohrverfahren für Leichtbauwerkstoffe
DE102015013247B4 (de) 2015-10-08 2022-06-09 Walter Bauer Bohrer mit Konteraufbohrfunktion und Konteraufbohrverfahren für Leichtbauwerkstoffe

Also Published As

Publication number Publication date
BE383808A (enrdf_load_stackoverflow)

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