EP0792705A3 - Procédé de forgeage au laminoir pour forets - Google Patents

Procédé de forgeage au laminoir pour forets Download PDF

Info

Publication number
EP0792705A3
EP0792705A3 EP97301286A EP97301286A EP0792705A3 EP 0792705 A3 EP0792705 A3 EP 0792705A3 EP 97301286 A EP97301286 A EP 97301286A EP 97301286 A EP97301286 A EP 97301286A EP 0792705 A3 EP0792705 A3 EP 0792705A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
flutes
blank
wheels
flute
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.)
Granted
Application number
EP97301286A
Other languages
German (de)
English (en)
Other versions
EP0792705B1 (fr
EP0792705A2 (fr
Inventor
Rudolf Jungwirth
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.)
Black and Decker Inc
Original Assignee
Black and Decker Inc
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 Black and Decker Inc filed Critical Black and Decker Inc
Publication of EP0792705A2 publication Critical patent/EP0792705A2/fr
Publication of EP0792705A3 publication Critical patent/EP0792705A3/fr
Application granted granted Critical
Publication of EP0792705B1 publication Critical patent/EP0792705B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/10—Making helical bodies or bodies having parts of helical shape twist-drills; screw-taps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Drilling Tools (AREA)
EP19970301286 1996-03-02 1997-02-26 Procédé de forgeage au laminoir pour forets Expired - Lifetime EP0792705B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9604544 1996-03-02
GB9604544A GB2310622A (en) 1996-03-02 1996-03-02 Drill bit

Publications (3)

Publication Number Publication Date
EP0792705A2 EP0792705A2 (fr) 1997-09-03
EP0792705A3 true EP0792705A3 (fr) 1998-11-11
EP0792705B1 EP0792705B1 (fr) 2002-05-08

Family

ID=10789794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970301286 Expired - Lifetime EP0792705B1 (fr) 1996-03-02 1997-02-26 Procédé de forgeage au laminoir pour forets

Country Status (3)

Country Link
EP (1) EP0792705B1 (fr)
DE (1) DE69712389T2 (fr)
GB (1) GB2310622A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7101125B2 (en) 2003-12-17 2006-09-05 Kennametal Inc. Twist drill
DE102010041164B4 (de) 2010-09-22 2022-01-27 Adolf Würth Gmbh & Co Kg Verfahren zum Herstellen eines Bohrers
WO2014015154A1 (fr) 2012-07-18 2014-01-23 Milwaukee Electric Tool Corporation Scie cylindrique
DE102014225320B4 (de) 2014-12-09 2018-05-03 Robert Bosch Gmbh Bohrwerkzeug
DE102016211953A1 (de) 2016-06-30 2018-01-04 Robert Bosch Gmbh Bohrwerkzeug
WO2020014340A1 (fr) 2018-07-10 2020-01-16 Milwaukee Electric Tool Corporation Scie-cloche dotée de trous à parois latérales hexagonales
CN112077370A (zh) 2019-06-13 2020-12-15 肯纳金属印度有限公司 可转位钻头刀片
USD958855S1 (en) 2019-12-09 2022-07-26 Milwaukee Electric Tool Corporation Hole saw
CN112705573B (zh) * 2021-03-25 2021-08-03 苏州用朴精密科技有限公司 用于硬质合金铣刀成型加工轧制装置
CN113102957A (zh) * 2021-04-25 2021-07-13 江苏飞达钻头股份有限公司 一种用于粗柄麻花钻生产的无废料生产工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE453560C (de) * 1927-12-09 Karl Schmachtenberg Kalibrierte Walzen oder Walzsegmente zur Herstellung von Spiralbohrern
DE1104481B (de) * 1953-04-10 1961-04-13 Franz Erdelyi Verfahren und Vorrichtung zum Warmwalzen von Laengsnuten aufweisenden Schneidwerkzeugen mit umlaufender Arbeitsbewegung aus einem Rundstab
DE2129406A1 (de) * 1971-06-14 1972-12-21 Kobe Steel Ltd Verfahren zum Herstellen gewalzter Spiralbohrer und danach hergestellter Spiralbohrer
DE2459286A1 (de) * 1974-12-14 1976-06-24 Kemmer Gmbh & Co Kg Paul Spiralbohrer, insbesondere zum bohren weicher werkstoffe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE453560C (de) * 1927-12-09 Karl Schmachtenberg Kalibrierte Walzen oder Walzsegmente zur Herstellung von Spiralbohrern
DE1104481B (de) * 1953-04-10 1961-04-13 Franz Erdelyi Verfahren und Vorrichtung zum Warmwalzen von Laengsnuten aufweisenden Schneidwerkzeugen mit umlaufender Arbeitsbewegung aus einem Rundstab
DE2129406A1 (de) * 1971-06-14 1972-12-21 Kobe Steel Ltd Verfahren zum Herstellen gewalzter Spiralbohrer und danach hergestellter Spiralbohrer
DE2459286A1 (de) * 1974-12-14 1976-06-24 Kemmer Gmbh & Co Kg Paul Spiralbohrer, insbesondere zum bohren weicher werkstoffe

Also Published As

Publication number Publication date
EP0792705B1 (fr) 2002-05-08
DE69712389T2 (de) 2003-01-02
DE69712389D1 (de) 2002-06-13
GB2310622A (en) 1997-09-03
GB9604544D0 (en) 1996-05-01
EP0792705A2 (fr) 1997-09-03

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