EP0152400A3 - Device for sharpening twist drills - Google Patents

Device for sharpening twist drills Download PDF

Info

Publication number
EP0152400A3
EP0152400A3 EP85890035A EP85890035A EP0152400A3 EP 0152400 A3 EP0152400 A3 EP 0152400A3 EP 85890035 A EP85890035 A EP 85890035A EP 85890035 A EP85890035 A EP 85890035A EP 0152400 A3 EP0152400 A3 EP 0152400A3
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding surface
guiding
drill
guiding body
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
EP85890035A
Other languages
German (de)
Other versions
EP0152400B1 (en
EP0152400A2 (en
Inventor
Raimund August Wurscher
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.)
Wurscher Raimund
Original Assignee
INTERMEDIUM AG
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 INTERMEDIUM AG filed Critical INTERMEDIUM AG
Publication of EP0152400A2 publication Critical patent/EP0152400A2/en
Publication of EP0152400A3 publication Critical patent/EP0152400A3/en
Application granted granted Critical
Publication of EP0152400B1 publication Critical patent/EP0152400B1/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)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)

Abstract

The apparatus for grinding twist drills comprises a shaft and a grinding wheel which has a grinding surface and is rigidly secured to the shaft. The apparatus comprises also a drill-guiding body, which faces the grinding surface and is axially spaced from it and axially immovable relative to the grinding surface. The drill-guiding body is formed with a plurality of guiding passages for guiding twist drills differing in diameter toward the grinding surface. At least one guide lug is aligned with each guiding passage of the drill-guiding body and adapted to extend into a flute of a twist drill extending through the associated guiding passage. All guide lugs are mounted on a guide lug carrier, which is mounted to be axially movable between the drill-guiding body and the grinding surface and which is biased toward the grinding surface by a spring. At least one abutment consisting of a material which has a higher hardness than the grinding wheel is secured to the guide lug carrier and has an abutment surface which is parallel to and engageable by the grinding surface. This arrangement ensures that a constant distance from the guide lugs to the grinding surface will be maintained during the grinding operation in spite of the wear of the grinding wheel and the original shape of the grinding surface will be restored.
EP85890035A 1984-02-14 1985-02-13 Device for sharpening twist drills Expired EP0152400B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0046484A AT380419B (en) 1984-02-14 1984-02-14 DEVICE FOR GRINDING SPIRAL DRILLS
AT464/84 1984-02-14

Publications (3)

Publication Number Publication Date
EP0152400A2 EP0152400A2 (en) 1985-08-21
EP0152400A3 true EP0152400A3 (en) 1986-12-30
EP0152400B1 EP0152400B1 (en) 1988-05-11

Family

ID=3491313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890035A Expired EP0152400B1 (en) 1984-02-14 1985-02-13 Device for sharpening twist drills

Country Status (7)

Country Link
US (1) US4574529A (en)
EP (1) EP0152400B1 (en)
JP (1) JPS60180757A (en)
AT (2) AT380419B (en)
CA (1) CA1233988A (en)
DE (1) DE3562578D1 (en)
ES (1) ES540321A0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT385703B (en) * 1986-07-07 1988-05-10 Wurscher Raimund DEVICE FOR GRINDING SPIRAL DRILLS
DE4038524A1 (en) * 1990-12-03 1992-06-04 Folke Werner DRILL GRINDING DEVICE
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
US9855966B2 (en) * 2012-11-20 2018-01-02 Glenn S. Welch Sharpening tool, sharpening system and kit
CN102974872A (en) * 2012-12-19 2013-03-20 南通第五机床有限公司 Vertical-horizontal convertible drilling bit for drilling machine
CN112507523B (en) * 2020-11-16 2024-05-17 深圳数马电子技术有限公司 Method and device for establishing twist drill model

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800755A (en) * 1955-03-14 1957-07-30 Joseph D Perra Drill sharpener
DE2042014A1 (en) * 1969-10-07 1971-04-22 Wurscher Raimund Dr Phil Device for grinding drills
DE1959470A1 (en) * 1969-11-27 1971-07-22 Wurscher Raimund August Device for grinding drills
FR2242853A5 (en) * 1973-08-28 1975-03-28 Bosch Gmbh Robert Drill grinder with guide body - fixed guide pins engaging drill flutes screw adjusted towards grinding wheel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE325210B (en) * 1967-05-03 1970-06-22 R Wurscher
US3742652A (en) * 1970-03-06 1973-07-03 Black & Decker Mfg Co Drill sharpener
US4016680A (en) * 1974-04-01 1977-04-12 The Black And Decker Manufacturing Company Sharpener for twist drills including grinding wheel dressing means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800755A (en) * 1955-03-14 1957-07-30 Joseph D Perra Drill sharpener
DE2042014A1 (en) * 1969-10-07 1971-04-22 Wurscher Raimund Dr Phil Device for grinding drills
DE1959470A1 (en) * 1969-11-27 1971-07-22 Wurscher Raimund August Device for grinding drills
FR2242853A5 (en) * 1973-08-28 1975-03-28 Bosch Gmbh Robert Drill grinder with guide body - fixed guide pins engaging drill flutes screw adjusted towards grinding wheel

Also Published As

Publication number Publication date
EP0152400B1 (en) 1988-05-11
JPS6236827B2 (en) 1987-08-10
JPS60180757A (en) 1985-09-14
ATE34113T1 (en) 1988-05-15
EP0152400A2 (en) 1985-08-21
AT380419B (en) 1986-05-26
DE3562578D1 (en) 1988-06-16
CA1233988A (en) 1988-03-15
US4574529A (en) 1986-03-11
ATA46484A (en) 1985-10-15
ES8601748A1 (en) 1985-11-16
ES540321A0 (en) 1985-11-16

Similar Documents

Publication Publication Date Title
DE3467318D1 (en) Belt sanding machine
DE3272149D1 (en) Cutting tool
ES457466A1 (en) Process for embedding hard particles in a bearing surface
AU2003283965A8 (en) Drill sharpener
ES443740A1 (en) Tools and methods for machining bores
ES8403214A1 (en) Method and apparatus for measuring a tool of a machine-tool.
DE3562578D1 (en) Device for sharpening twist drills
EP0174799A3 (en) Machine tools, in particular grinding machines with apparatus for changing grinding wheel tools and workpieces
GB1293729A (en) Method of and apparatus for sharpening small hand tools
ES260129U (en) Self-repairing wiper die
IT8121937A0 (en) SELF-CENTERING FEED MECHANISM FOR AN ABRASIVE GRINDING MACHINE.
SE8803904D0 (en) TRAEBEARBETNINGSMASKIN
DE3566510D1 (en) Device for sharpening twist drills
SE8406490D0 (en) SET AND CUTTING TOOLS TO Sharpen a rotating grinding tool
DE3468355D1 (en) Auxiliary device for sharpening twist drills
ES8400774A1 (en) Staking-machine.
ES8106097A1 (en) Hand belt-grinding machine with a guiding frame.
US2594646A (en) Polishing machine
GB1287832A (en)
CN211805330U (en) Fan-shaped magnetic steel processing device
EP0035627A3 (en) Method of regrinding a roll
JPS55101360A (en) Method of chamfering glass plate side
FR2513557B1 (en) IMPROVEMENT FOR SANDING AND SHREDDING BRUSHES
EP1533410B1 (en) Raising machine drum with raising elements for high quality fabrics
DE59706439D1 (en) DEVICE FOR PROCESSING LONG OBJECTS

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19850228

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19870930

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WURSCHER, RAIMUND

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WURSCHER, RAIMUND

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 34113

Country of ref document: AT

Date of ref document: 19880515

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: FIAMMENGHI - DOMENIGHETTI

REF Corresponds to:

Ref document number: 3562578

Country of ref document: DE

Date of ref document: 19880616

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 85890035.0

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970131

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19970204

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970207

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19970212

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19970214

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970217

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19970226

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19970228

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970321

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980213

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980213

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980228

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980228

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980228

BERE Be: lapsed

Owner name: WURSCHER RAIMUND

Effective date: 19980228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980901

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980213

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 85890035.0

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981103

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST