EP0084855A3 - Device for grinding, particularly for thinning a twist drill - Google Patents

Device for grinding, particularly for thinning a twist drill Download PDF

Info

Publication number
EP0084855A3
EP0084855A3 EP83100446A EP83100446A EP0084855A3 EP 0084855 A3 EP0084855 A3 EP 0084855A3 EP 83100446 A EP83100446 A EP 83100446A EP 83100446 A EP83100446 A EP 83100446A EP 0084855 A3 EP0084855 A3 EP 0084855A3
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding disk
drill bit
twist drill
tip
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
EP83100446A
Other languages
German (de)
Other versions
EP0084855A2 (en
EP0084855B1 (en
Inventor
Knut Guhring
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.)
Guehring Automation GmbH
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
Priority to AT83100446T priority Critical patent/ATE29415T1/en
Publication of EP0084855A2 publication Critical patent/EP0084855A2/en
Publication of EP0084855A3 publication Critical patent/EP0084855A3/en
Application granted granted Critical
Publication of EP0084855B1 publication Critical patent/EP0084855B1/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Drilling Tools (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

Described herein is an apparatus for grinding a twist drill bit, especially for web thinning and split pointing of the tip of a twist drill. The apparatus includes a grinding disk and a drill bit holder movable relative thereto mounted on a support. The support may execute relative motion with respect to the grinding disk under cam control in two coordinates and using a grinding disk having an invariable profile, in order to produce tip grinding patterns of various types. Preferably, the cam control is performed by means of interchangeable templates so that it is possible, using only a single grinding disk, no longer subject to the necessity of dressing, to produce a multiplicity of tip surface patterns that are optimally adapted to the given drill bit geometry.
EP83100446A 1982-01-26 1983-01-19 Device for thinning a twist drill Expired EP0084855B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100446T ATE29415T1 (en) 1982-01-26 1983-01-19 DEVICE FOR TAKING A TWIST DRILL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3202362 1982-01-26
DE3202362A DE3202362C2 (en) 1982-01-26 1982-01-26 Device for sharpening a twist drill

Publications (3)

Publication Number Publication Date
EP0084855A2 EP0084855A2 (en) 1983-08-03
EP0084855A3 true EP0084855A3 (en) 1984-10-17
EP0084855B1 EP0084855B1 (en) 1987-09-09

Family

ID=6153914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100446A Expired EP0084855B1 (en) 1982-01-26 1983-01-19 Device for thinning a twist drill

Country Status (4)

Country Link
US (1) US4642942A (en)
EP (1) EP0084855B1 (en)
AT (1) ATE29415T1 (en)
DE (2) DE3202362C2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8604127D0 (en) * 1986-02-19 1986-03-26 Gardner A B Sharpening apparatus
JPS6393552A (en) * 1986-10-08 1988-04-23 Toyo Mach Kk Drill grinding machine
GB8715078D0 (en) * 1987-06-23 1987-08-05 Brierley Ltd Z Drill grinding machines
US4995301A (en) * 1989-12-14 1991-02-26 Phillips Sr Douglas B Tri-motion grinding fixture
US5241791A (en) * 1992-03-04 1993-09-07 Alfred Brian Gardner Edge tool sharpening apparatus
US5609447A (en) * 1993-11-15 1997-03-11 Rogers Tool Works, Inc. Surface decarburization of a drill bit
US5628837A (en) * 1993-11-15 1997-05-13 Rogers Tool Works, Inc. Surface decarburization of a drill bit having a refined primary cutting edge
FR2758713B1 (en) * 1997-01-29 1999-08-20 Micro Mega Int Mfg Sa PROCESS FOR THE MANUFACTURE OF NICKEL-TITANIUM ALLOY DENTAL RINGS AND DENTAL REARS THUS OBTAINED
US7033367B2 (en) * 1998-04-14 2006-04-25 Neurodynamics, Inc. Slotted catheter guide for perpendicular insertion into a cranium orifice
AT407353B (en) * 1998-11-30 2001-02-26 Weingartner Maschbau Gmbh METHOD AND MACHINING TOOL FOR PRODUCING SCREW-SHAPED PROFILES
JP4344690B2 (en) * 2002-06-27 2009-10-14 ザ グリーソン ワークス Clamp assembly
US20050053439A1 (en) 2003-09-09 2005-03-10 Yuhong Wang Two-flute twist drill
DE102005010286A1 (en) * 2005-03-01 2006-09-07 Thiel, Wolfgang, Dr. Machining apparatus and method for machining surfaces in recesses of workpieces
US20070058881A1 (en) * 2005-09-12 2007-03-15 Nishimura Ken A Image capture using a fiducial reference pattern
US7641202B1 (en) 2005-10-06 2010-01-05 Professional Tool Manufacturing, Llc End effector with moveable jaw assembly to manipulate an article
US7147546B1 (en) 2005-10-06 2006-12-12 Professional Tool Manufacturing, Llc Tool holder with moveable alignment finger
US7717654B2 (en) * 2006-05-26 2010-05-18 Cirino Thomas J Drill tip with serrated and dowel pinned shank interface
US20070274794A1 (en) * 2006-05-26 2007-11-29 Cirino Thomas J Oblique angle serration location and drive interface
DE102008010833A1 (en) 2008-02-23 2009-08-27 Daimler Ag Rod shaped linear grooved drill i.e. double-lipped deep-hole drill, has linear axial groove defined in cross sectional profile in circumferential direction by groove flanks, and axially extending cutting cavities provided in flank
US11117200B2 (en) 2016-10-21 2021-09-14 Kyocera Sgs Precision Tools, Inc. Drills and methods of using the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932135A (en) * 1956-12-18 1960-04-12 Tatar Alexander Machine for sharpening four-face drills
FR1589568A (en) * 1968-10-18 1970-03-31
FR2180275A5 (en) * 1972-04-14 1973-11-23 Mavilor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072501B (en) * 1959-12-31
US2477135A (en) * 1945-10-22 1949-07-26 Barber Colman Co Cutter sharpening machine
US2632983A (en) * 1949-10-29 1953-03-31 Edward C Kapnick Drill end sharpening means
US2797538A (en) * 1953-10-30 1957-07-02 Aurele A Studler Grinding device for tools
US3209493A (en) * 1963-08-19 1965-10-05 Winslow Product Engineering Co Drill pointing machine
CH474329A (en) * 1967-10-24 1969-06-30 Steinmetz Werner Drill grinding device, in particular for twist drills
US3621613A (en) * 1969-05-15 1971-11-23 Grob & Tesker Corp Method and apparatus for thinning the web of a drill
US3788009A (en) * 1971-05-14 1974-01-29 Ok Tool Co Inc Controlled tool for machining compound surfaces
US3751856A (en) * 1971-09-28 1973-08-14 E Jorgensen Profile copying machine
DE2656491C2 (en) * 1976-12-14 1982-07-29 Fa. Ulrich Klingel, 7130 Mühlacker Twist drill grinding machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932135A (en) * 1956-12-18 1960-04-12 Tatar Alexander Machine for sharpening four-face drills
FR1589568A (en) * 1968-10-18 1970-03-31
FR2180275A5 (en) * 1972-04-14 1973-11-23 Mavilor

Also Published As

Publication number Publication date
EP0084855A2 (en) 1983-08-03
DE3373431D1 (en) 1987-10-15
EP0084855B1 (en) 1987-09-09
US4642942A (en) 1987-02-17
DE3202362C2 (en) 1986-05-22
DE3202362A1 (en) 1983-08-04
ATE29415T1 (en) 1987-09-15

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