DE69712389D1 - Process for roll forging drills - Google Patents

Process for roll forging drills

Info

Publication number
DE69712389D1
DE69712389D1 DE69712389T DE69712389T DE69712389D1 DE 69712389 D1 DE69712389 D1 DE 69712389D1 DE 69712389 T DE69712389 T DE 69712389T DE 69712389 T DE69712389 T DE 69712389T DE 69712389 D1 DE69712389 D1 DE 69712389D1
Authority
DE
Germany
Prior art keywords
drills
roll forging
forging
roll
forging drills
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 - Lifetime
Application number
DE69712389T
Other languages
German (de)
Other versions
DE69712389T2 (en
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
Application granted granted Critical
Publication of DE69712389D1 publication Critical patent/DE69712389D1/en
Publication of DE69712389T2 publication Critical patent/DE69712389T2/en
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)
DE1997612389 1996-03-02 1997-02-26 Process for roll forging drills Expired - Lifetime DE69712389T2 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
DE69712389D1 true DE69712389D1 (en) 2002-06-13
DE69712389T2 DE69712389T2 (en) 2003-01-02

Family

ID=10789794

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997612389 Expired - Lifetime DE69712389T2 (en) 1996-03-02 1997-02-26 Process for roll forging drills

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113102957A (en) * 2021-04-25 2021-07-13 江苏飞达钻头股份有限公司 Waste-free production process for producing rough shank twist drill

Families Citing this family (9)

* 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 (en) 2010-09-22 2022-01-27 Adolf Würth Gmbh & Co Kg Method of making a drill
WO2014015154A1 (en) 2012-07-18 2014-01-23 Milwaukee Electric Tool Corporation Hole saw
DE102014225320B4 (en) 2014-12-09 2018-05-03 Robert Bosch Gmbh drilling
DE102016211953A1 (en) 2016-06-30 2018-01-04 Robert Bosch Gmbh drilling
EP3820639A4 (en) 2018-07-10 2022-06-15 Milwaukee Electric Tool Corporation Hole saw with hex sidewall holes
CN112077370A (en) 2019-06-13 2020-12-15 肯纳金属印度有限公司 Indexable drill insert
USD958855S1 (en) 2019-12-09 2022-07-26 Milwaukee Electric Tool Corporation Hole saw
CN112705573B (en) * 2021-03-25 2021-08-03 苏州用朴精密科技有限公司 Be used for carbide milling cutter contour machining rolling device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE453560C (en) * 1927-12-09 Karl Schmachtenberg Calibrated rollers or roller segments for the production of twist drills
DE1104481B (en) * 1953-04-10 1961-04-13 Franz Erdelyi Method and device for hot rolling cutting tools having longitudinal grooves with a rotating working movement from a round bar
DE2129406A1 (en) * 1971-06-14 1972-12-21 Kobe Steel Ltd Method of making rolled twist drills and twist drills made thereafter
DE2459286A1 (en) * 1974-12-14 1976-06-24 Kemmer Gmbh & Co Kg Paul Small diameter spiral drill - has largest groove angle at drill point, preferably 35 degrees, lowest at lower end

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113102957A (en) * 2021-04-25 2021-07-13 江苏飞达钻头股份有限公司 Waste-free production process for producing rough shank twist drill

Also Published As

Publication number Publication date
EP0792705A2 (en) 1997-09-03
DE69712389T2 (en) 2003-01-02
EP0792705B1 (en) 2002-05-08
GB2310622A (en) 1997-09-03
EP0792705A3 (en) 1998-11-11
GB9604544D0 (en) 1996-05-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition