EP0591109A1 - Verbessertes Gerät zum allgemeinen Schleifen und Schärfen von Klingen - Google Patents

Verbessertes Gerät zum allgemeinen Schleifen und Schärfen von Klingen Download PDF

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Publication number
EP0591109A1
EP0591109A1 EP93830306A EP93830306A EP0591109A1 EP 0591109 A1 EP0591109 A1 EP 0591109A1 EP 93830306 A EP93830306 A EP 93830306A EP 93830306 A EP93830306 A EP 93830306A EP 0591109 A1 EP0591109 A1 EP 0591109A1
Authority
EP
European Patent Office
Prior art keywords
grinding
improved machine
machine
grinding wheels
toothed
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
EP93830306A
Other languages
English (en)
French (fr)
Other versions
EP0591109B1 (de
Inventor
Patrizio Fazzini
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 EP0591109A1 publication Critical patent/EP0591109A1/de
Application granted granted Critical
Publication of EP0591109B1 publication Critical patent/EP0591109B1/de
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
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/52—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of shear blades or scissors
    • 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
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives

Definitions

  • the present invention relates to an improved machine for grinding and sharpening blades in general.
  • bearing shafts are cantilever-wise supported and, accordingly, they can be subjected to objectionable clearances which, in addition to providing a poor quality sharpending of the blades, can generate vibrations susceptible to further increase the operating noise of the machine.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing an improved machine for grinding and sharpening blades in general, which allows to carry out these two working operations, i.e. the grinding and sharpening operations, by a single processing step, thereby greatly reducing the processing time on the blade.
  • a main object of the present invention is to provide such an improved machine which can be used very easily and in particular by those users which must frequently grind and sharpen their operating blades.
  • Another object of the present invention is to provide such a machine which is practically noise free and very reliable in operation and which, moreover, can be easily made starting from easily available elements and materials and which, accordingly, is very competitive from a mere economic standpoint.
  • an improved machine for grinding and sharpening blades in general, characterized in that said machine comprises a bearing framework, which is provided with a front plate and a rear plate, supporting the rotary shaft of a pair of grinding wheels, arranged adjoining one another and between said plates, tooth belt driving means being moreover provided for causing said grinding wheels to turn in opposite turning directions.
  • the improved machine for grinding and sharpending blades in general comprises a bearing framework, generally indicated at the reference number 1, which comprises a front plate 2 and a rear plate 3 which are mutually parallel and spaced.
  • the plates 2 and 3 support, through ball bearings, a first shaft 4 for supporting a first grinding wheel 2-and a second supporting shaft 6, for supporting a second grinding wheel 7.
  • a third supporting shaft 8 supporting an auxiliary grinding wheel 9, provided for sharpening scissors and the like, as it will become more apparent hereinafter.
  • the shafts 4, 6 and 8 are mutually parallel, and the grinding wheels are arranged between the plates 2 and 3, and they, accordingly, are connected to shafts which are affixed at both the end portions thereof, and, accordingly, the grinding wheels will be caused to turn in a very reliable way.
  • first toothed pulley 10 To the first shaft 4 there is connected a first toothed pulley 10 and to the second shaft there is connected a second toothed pulley 11, whereas to the third shaft 8 there is connected a transmission toothed pulley 12.
  • the toothed belt 20 is driven by a driving gear wheel 21 which is connected to a driving assembly 22, supported by a slide plate 24 having elongated slots 25 allowing the position of the driving assembly to be changed, so as to also operate as a tension assembly for the belt.
  • the grinding wheels 5 and 7 are advantageously provided with helical tooth arrangements 30, equispaced from one another, so as to provide a mutual crossing at their mutual connection region, in order to define a precise sharpening region which is arranged at a notch 40 provided on a guiding plate 41 so as to provide a precise and accurate location of the blade to be sharpened.
  • the grinding wheels 5 and 7 are provided, at their axial end portions, with rounded parts 42, on the corner of the threads at the burrs, so as to prevent any processing defects from occurring.
  • the grinding wheels which have a helical contour or, if desired, a flat contour, are coated by a diamond powder, or by like coating substances, in particular those which are commercially available with the trade name of Borazon.
  • the guiding plate 41 is provided, at the auxiliary grinding wheel 9, with a guiding recess 50, allowing to properly locate scissors blades or the like.
  • an improved machine which allows to perform both the sharpening operation, with a removal of the burrs and the dead edge of the blades, and the re-sharpening of old blades, which have lost their cutting edge, thereby providing a new cutting edge and removing the related processing burrs.
  • the machine according to the invention which can be used in a very simple manner, is practically free of any noise owing to the provision of the toothed belts which allows to perform a very accurate sharpening, in particular owing to the proper location of the shafts supporting the grinding wheels, which are devoid of vibrations, since they are supported at two supporting regions, arranged near the end portions thereof.
  • the used materials provided that they are compatible to the intended use, as well as the contingent size and shapes can be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Dry Shavers And Clippers (AREA)
  • Paper (AREA)
EP93830306A 1992-09-01 1993-07-20 Verbessertes Gerät zum allgemeinen Schleifen und Schärfen von Klingen Expired - Lifetime EP0591109B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI922042A IT1256364B (it) 1992-09-01 1992-09-01 Macchina perfezionata per l'arrotatura e l'affilatura di lame in genere
ITMI922042 1992-09-01

Publications (2)

Publication Number Publication Date
EP0591109A1 true EP0591109A1 (de) 1994-04-06
EP0591109B1 EP0591109B1 (de) 1997-05-21

Family

ID=11363901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93830306A Expired - Lifetime EP0591109B1 (de) 1992-09-01 1993-07-20 Verbessertes Gerät zum allgemeinen Schleifen und Schärfen von Klingen

Country Status (4)

Country Link
EP (1) EP0591109B1 (de)
AT (1) ATE153269T1 (de)
DE (1) DE69310853T2 (de)
IT (1) IT1256364B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0727278A1 (de) * 1995-02-20 1996-08-21 Valex S.P.A. Verbesserte Schleifmaschine
EP1745886A1 (de) * 2005-07-20 2007-01-24 Hans-Peter Zahnd Schleifgerät
EP1980364A1 (de) * 2007-04-13 2008-10-15 Fazzini Technology di ing. Patrizio Fazzini & C.S.a.s. Verbesserte Messerschärfvorrichtung
CN111250301A (zh) * 2020-03-13 2020-06-09 浙江智菱科技有限公司 一种滚轮喷胶装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332173A (en) * 1964-06-30 1967-07-25 Cory Corp Sharpener for cutting instruments
DE7727096U1 (de) * 1977-09-01 1977-12-08 Friedr. Dick Gmbh, 7300 Esslingen Schleifgeraet zum schaerfen von messerschneiden
EP0349017A2 (de) * 1984-03-12 1990-01-03 Daniel D. Friel Messerschleifgerät

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332173A (en) * 1964-06-30 1967-07-25 Cory Corp Sharpener for cutting instruments
DE7727096U1 (de) * 1977-09-01 1977-12-08 Friedr. Dick Gmbh, 7300 Esslingen Schleifgeraet zum schaerfen von messerschneiden
EP0349017A2 (de) * 1984-03-12 1990-01-03 Daniel D. Friel Messerschleifgerät

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0727278A1 (de) * 1995-02-20 1996-08-21 Valex S.P.A. Verbesserte Schleifmaschine
EP1745886A1 (de) * 2005-07-20 2007-01-24 Hans-Peter Zahnd Schleifgerät
EP1980364A1 (de) * 2007-04-13 2008-10-15 Fazzini Technology di ing. Patrizio Fazzini & C.S.a.s. Verbesserte Messerschärfvorrichtung
CN111250301A (zh) * 2020-03-13 2020-06-09 浙江智菱科技有限公司 一种滚轮喷胶装置
CN111250301B (zh) * 2020-03-13 2021-09-21 浙江智菱科技有限公司 一种滚轮喷胶装置

Also Published As

Publication number Publication date
IT1256364B (it) 1995-12-04
EP0591109B1 (de) 1997-05-21
ATE153269T1 (de) 1997-06-15
ITMI922042A0 (it) 1992-09-01
DE69310853D1 (de) 1997-06-26
ITMI922042A1 (it) 1994-03-01
DE69310853T2 (de) 1997-12-18

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