EP0489410B1 - Dispositif pour l'affûtage de forets - Google Patents

Dispositif pour l'affûtage de forets Download PDF

Info

Publication number
EP0489410B1
EP0489410B1 EP91120783A EP91120783A EP0489410B1 EP 0489410 B1 EP0489410 B1 EP 0489410B1 EP 91120783 A EP91120783 A EP 91120783A EP 91120783 A EP91120783 A EP 91120783A EP 0489410 B1 EP0489410 B1 EP 0489410B1
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding surface
grinding wheel
drill
guide
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
EP91120783A
Other languages
German (de)
English (en)
Other versions
EP0489410A1 (fr
Inventor
Folke Werner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0489410A1 publication Critical patent/EP0489410A1/fr
Application granted granted Critical
Publication of EP0489410B1 publication Critical patent/EP0489410B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills
    • B24B3/265—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills using devices specially adapted for domestic use

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Drilling Tools (AREA)

Claims (1)

  1. Dispositif pour l'affûtage de forets hélicoïdaux pourvus de surfaces en dépouille (18), et d'une goujure (20) et d'un tranchant principal (21) pour chaque surface en dépouille (18), comportant
    - un axe médian (1),
    - une meule (7) disposée en rotation autour de l'axe médian (1) et pourvue d'une surface d'affûtage extérieure conique (8) dont l'extrémité intérieure (10) définit un cercle coaxial, et
    - un élément de guidage (11, 12) qui est disposé en face de la surface d'affûtage (8) et qui comporte des conduits de guidage (13) globalement parallèles à l'axe médian (1) et, dans ces conduits de guidage (13), des ergots de guidage (16) qui pénètrent dans les goujures (20) d'un foret introduit jusqu'à la surface d'affûtage et qui limitent une rotation autour de son axe, les conduits de guidage (13) étant globalement tangents à une enveloppe cylindrique imaginaire coaxiale (14) qui rencontre l'extrémité intérieure (10) de la surface d'affûtage (8),
    caractérisé en ce que la surface d'affûtage (8) forme avec une section de surface intérieure conique (9) de la meule (7) qui fait suite à son extrémité intérieure (10) une arête à angle aigu (10).
EP91120783A 1990-12-03 1991-12-03 Dispositif pour l'affûtage de forets Expired - Lifetime EP0489410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4038524A DE4038524A1 (de) 1990-12-03 1990-12-03 Bohrerschleifeinrichtung
DE4038524 1990-12-03

Publications (2)

Publication Number Publication Date
EP0489410A1 EP0489410A1 (fr) 1992-06-10
EP0489410B1 true EP0489410B1 (fr) 1997-09-24

Family

ID=6419494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120783A Expired - Lifetime EP0489410B1 (fr) 1990-12-03 1991-12-03 Dispositif pour l'affûtage de forets

Country Status (6)

Country Link
US (1) US5210977A (fr)
EP (1) EP0489410B1 (fr)
JP (1) JP2556790B2 (fr)
AU (1) AU646905B2 (fr)
CA (1) CA2056162A1 (fr)
DE (2) DE4038524A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788559A (en) * 1994-02-25 1998-08-04 Jungnitsch; Paul Lewis Web adjust drill bit sharpener and method of using
US5564871A (en) * 1994-06-16 1996-10-15 Lagsdin; Andry Chamfer machine
US5676591A (en) * 1996-08-13 1997-10-14 Huang; Cheng-Hsien Bit sharpener
US9199315B2 (en) 2000-06-02 2015-12-01 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill
US6676500B1 (en) * 2002-11-12 2004-01-13 Sophin Lin Drill bit sharpener
JP2005262341A (ja) * 2004-03-16 2005-09-29 Noritake Super Abrasive:Kk Ｃｍｐパッドコンディショナー
US7488239B2 (en) * 2006-11-08 2009-02-10 Rolf Tamm Assembly for grinding electrodes
DE102009044855A1 (de) * 2009-12-10 2011-06-16 Rolf Tamm Bausatz zum Nachrüsten einer Elektrodenschleifvorrichtung und Elektrodenschleifvorrichtung
US8690643B2 (en) * 2010-07-06 2014-04-08 Western New England University Portable drill bit sharpener
CN102126952A (zh) * 2010-12-17 2011-07-20 张家港瀚康化工有限公司 丁二酸单乙酯酰氯的制备方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078306A (en) * 1935-12-26 1937-04-27 Roderick O Baalmann Drill sharpener
US3067548A (en) * 1960-06-06 1962-12-11 Winslow Product Engineering Co Drill pointing method and machine
SE325210B (fr) * 1967-05-03 1970-06-22 R Wurscher
US3579924A (en) * 1967-05-10 1971-05-25 Mataichi Saito Method for continuously grinding a drill tip end into a normal shape and into a split point
US3742652A (en) * 1970-03-06 1973-07-03 Black & Decker Mfg Co Drill sharpener
DE2343228A1 (de) * 1973-08-28 1975-03-20 Bosch Gmbh Robert Bohrerschleifeinrichtung
GB2132518B (en) * 1982-12-17 1986-03-26 Keith Harris Stand for storing and sharpening chisels, plane irons and drill bits
AT380419B (de) * 1984-02-14 1986-05-26 Wurscher Raimund August Einrichtung zum schleifen von spiralbohrern
AT380418B (de) * 1984-02-14 1986-05-26 Wurscher Raimund August Einrichtung zum schleifen von spiralbohrern
GB8509028D0 (en) * 1985-04-09 1985-05-15 Bicc Plc Honing tool
AT385703B (de) * 1986-07-07 1988-05-10 Wurscher Raimund Einrichtung zum schleifen von spiralbohrern

Also Published As

Publication number Publication date
JP2556790B2 (ja) 1996-11-20
DE59108860D1 (de) 1997-10-30
AU646905B2 (en) 1994-03-10
DE4038524A1 (de) 1992-06-04
DE4038524C2 (fr) 1992-11-12
JPH0523956A (ja) 1993-02-02
CA2056162A1 (fr) 1992-06-04
EP0489410A1 (fr) 1992-06-10
AU8827391A (en) 1992-06-04
US5210977A (en) 1993-05-18

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