IT8921012A0 - SHARPENING MACHINE FOR TWIST DRILL BITS, PARTICULARLY FOR DRILLS. - Google Patents

SHARPENING MACHINE FOR TWIST DRILL BITS, PARTICULARLY FOR DRILLS.

Info

Publication number
IT8921012A0
IT8921012A0 IT8921012A IT2101289A IT8921012A0 IT 8921012 A0 IT8921012 A0 IT 8921012A0 IT 8921012 A IT8921012 A IT 8921012A IT 2101289 A IT2101289 A IT 2101289A IT 8921012 A0 IT8921012 A0 IT 8921012A0
Authority
IT
Italy
Prior art keywords
drills
drill bits
twist drill
sharpening machine
sharpening
Prior art date
Application number
IT8921012A
Other languages
Italian (it)
Other versions
IT1230940B (en
Inventor
Pietro Carrera
Clementina Rui
Original Assignee
Carrera Pietro Rui Clementina
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 Carrera Pietro Rui Clementina filed Critical Carrera Pietro Rui Clementina
Priority to IT8921012A priority Critical patent/IT1230940B/en
Publication of IT8921012A0 publication Critical patent/IT8921012A0/en
Priority to EP19900111799 priority patent/EP0405338A3/en
Application granted granted Critical
Publication of IT1230940B publication Critical patent/IT1230940B/en

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
    • B24B3/28—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills by swivelling the drill around an axis angularly to the drill axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
IT8921012A 1989-06-28 1989-06-28 SHARPENING MACHINE FOR HELICAL POINTS, IN PARTICULAR FROM DRILL IT1230940B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT8921012A IT1230940B (en) 1989-06-28 1989-06-28 SHARPENING MACHINE FOR HELICAL POINTS, IN PARTICULAR FROM DRILL
EP19900111799 EP0405338A3 (en) 1989-06-28 1990-06-21 Sharpening machine for twist drills, in particular for drilling machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8921012A IT1230940B (en) 1989-06-28 1989-06-28 SHARPENING MACHINE FOR HELICAL POINTS, IN PARTICULAR FROM DRILL

Publications (2)

Publication Number Publication Date
IT8921012A0 true IT8921012A0 (en) 1989-06-28
IT1230940B IT1230940B (en) 1991-11-08

Family

ID=11175391

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8921012A IT1230940B (en) 1989-06-28 1989-06-28 SHARPENING MACHINE FOR HELICAL POINTS, IN PARTICULAR FROM DRILL

Country Status (2)

Country Link
EP (1) EP0405338A3 (en)
IT (1) IT1230940B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735732A (en) 1996-07-05 1998-04-07 Bernard; David A. Precision drill sharpener and grinding wheel assembly therefor
US6450864B1 (en) 2000-10-13 2002-09-17 Raphael W. Smith End mill grinder with two independently adjustable grinding wheels
CN107322378A (en) * 2017-09-01 2017-11-07 贵州迈锐钻探设备制造有限公司 A kind of bit grinding machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE189609C (en) *
FR812340A (en) * 1936-01-15 1937-05-07 Drill bit sharpening machine
US2142923A (en) * 1936-08-05 1939-01-03 Sellers William & Co Inc Drill grinding machine
FR1114627A (en) * 1954-11-19 1956-04-16 Realisations Et Etudes Mecaniq Drill bit sharpening device
FR1495629A (en) * 1966-08-16 1967-09-22 Sheffield Twist Drill & Steel Machine for sharpening twist drills
US3813822A (en) * 1972-05-08 1974-06-04 T Grob Web thinning machine
GB8715078D0 (en) * 1987-06-23 1987-08-05 Brierley Ltd Z Drill grinding machines

Also Published As

Publication number Publication date
IT1230940B (en) 1991-11-08
EP0405338A3 (en) 1991-07-24
EP0405338A2 (en) 1991-01-02

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970625