CA2196865A1 - Self-chamfering drill bit - Google Patents

Self-chamfering drill bit

Info

Publication number
CA2196865A1
CA2196865A1 CA002196865A CA2196865A CA2196865A1 CA 2196865 A1 CA2196865 A1 CA 2196865A1 CA 002196865 A CA002196865 A CA 002196865A CA 2196865 A CA2196865 A CA 2196865A CA 2196865 A1 CA2196865 A1 CA 2196865A1
Authority
CA
Canada
Prior art keywords
cutting tip
workpiece
self
cutting
hole
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
CA002196865A
Other languages
French (fr)
Other versions
CA2196865C (en
Inventor
Karl P. Schneider
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 CA2196865A1 publication Critical patent/CA2196865A1/en
Application granted granted Critical
Publication of CA2196865C publication Critical patent/CA2196865C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B23B51/04—Drills for trepanning
    • B23B51/0486—Drills for trepanning with lubricating or cooling equipment
    • B23B51/0493—Drills for trepanning with lubricating or cooling equipment with exchangeable cutting inserts, e.g. able to be clamped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/101—Deburring tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/102—Back spot-facing or chamfering

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

A self-chamfering drill bit is disclosed having a shank (12) with a longitudinal groove (28) formed therein. A resilient, cantilevered insert (36) is located in the groove. The insert has a radially projecting cutting tip (44) formed thereon. The cutting tip has forward and rearward bevelled cutting edges (46,48) formed thereon, so that as the drill advances to make a hole in a workpiece (60), the cutting tip forward bevelled cutting edge chamfers the front side of the hole. The cutting tip 'then retracts into the groove as it passes through the workpiece, and as the cutting tip emerges from the backside of the workpiece, the cutting tip rearward bevelled cutting edge automatically chamfers the backside of the hole being made in the workpiece.
CA002196865A 1994-08-05 1994-08-05 Self-chamfering drill bit Expired - Fee Related CA2196865C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA1994/000429 WO1996004091A1 (en) 1994-08-05 1994-08-05 Self-chamfering drill bit

Publications (2)

Publication Number Publication Date
CA2196865A1 true CA2196865A1 (en) 1996-02-15
CA2196865C CA2196865C (en) 2001-07-03

Family

ID=4173027

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002196865A Expired - Fee Related CA2196865C (en) 1994-08-05 1994-08-05 Self-chamfering drill bit

Country Status (3)

Country Link
AU (1) AU7380494A (en)
CA (1) CA2196865C (en)
WO (1) WO1996004091A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635490A1 (en) * 1996-09-02 1998-03-05 Oehler Maschbau Gmbh Milling tool for milling chamfers
UA78180C2 (en) * 1997-10-03 2007-03-15 Меріаль Porcine circovirus, vaccines and diagnostic reagents
DE20320318U1 (en) 2003-06-27 2004-11-11 Gühring, Jörg, Dr. Deburring tool
CN100408236C (en) * 2006-05-24 2008-08-06 梁刚 Downhole machining cutter
US20190009348A1 (en) * 2017-07-07 2019-01-10 Cogsdill Tool Products, Inc. Deburring tool
US11407042B2 (en) 2019-01-07 2022-08-09 Omg, Inc. Counterbore tool and setting tool for fascia system and installation method
DE102020114722A1 (en) * 2020-06-03 2021-12-09 Kennametal Inc. Cutting tool and indexable insert

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD46615A (en) *
DD28846A (en) *
US2437822A (en) * 1944-10-30 1948-03-16 Curtiss Wright Corp Combined drill and deburring tool
US3449984A (en) * 1964-10-06 1969-06-17 Cogsdill Tool Prod Deburring tool and a method of making a deburring tool
US3940214A (en) * 1975-02-10 1976-02-24 Waschek Daryl E Drill bit with deburring device
US4086018A (en) * 1977-04-07 1978-04-25 Robinson Tool Company Deburring tool
DE3108438C2 (en) * 1981-01-29 1983-05-26 Komet Stahlhalter- Und Werkzeugfabrik Robert Breuning Gmbh, 7122 Besigheim Drilling tool
US5173013A (en) * 1992-02-28 1992-12-22 Eaton Corporation Combined hole cutting and chamfering tool

Also Published As

Publication number Publication date
CA2196865C (en) 2001-07-03
WO1996004091A1 (en) 1996-02-15
AU7380494A (en) 1996-03-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed