EP0591109B1 - 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
EP0591109B1
EP0591109B1 EP93830306A EP93830306A EP0591109B1 EP 0591109 B1 EP0591109 B1 EP 0591109B1 EP 93830306 A EP93830306 A EP 93830306A EP 93830306 A EP93830306 A EP 93830306A EP 0591109 B1 EP0591109 B1 EP 0591109B1
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EP
European Patent Office
Prior art keywords
machine according
grinding
grinding wheels
shafts
machine
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.)
Expired - Lifetime
Application number
EP93830306A
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English (en)
French (fr)
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EP0591109A1 (de
Inventor
Patrizio Fazzini
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Individual
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Individual
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    • 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 a machine for grinding and sharpening blades in general, as it is defined in the preamble of claim 1.
  • a machine for grinding and sharpening blades in general, as it is defined in the preamble of claim 1.
  • Such a machine is known, for example, from DE-U-77 27 096.
  • 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.
  • 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, equi-spaced 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Dry Shavers And Clippers (AREA)
  • Paper (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (10)

  1. Ein Apparat allgemein zum Schleifen und Schärfen von Klingen, der einen tragenden Rahmen umfaßt, der mit einer Vorderplatte und einer Rückplatte versehen ist, die mindestens zwei Wellen tragen, von denen jede ein Schleifrad trägt, wobei die Achsen dieser Wellen parallel angeordnet sind und einen solchen Abstand voneinander haben, daß sich diese Schleifräder in den einander gegenüberliegenden Bereichen teilweise überlappen können, wobei eine Antriebsvorrichtung zum rotierenden Antrieb dieser Wellen um ihre jeweiligen Achsen und in entgegengesetzte Drehrichtungen bereitgestellt ist und diese Antriebsvorrichtung eine Vorrichtung aus gezahnten Antriebsriemen umfaßt, die in Zahnrollen greifen, die zwecks gegenläufiger Drehbewegung dieser Schleifräder mit diesen Wellen verbunden sind, dadurch gekennzeichnet, daß diese Schleifräder zwischen dieser Vorderplatte und dieser Rückplatte angeordnet und ihre Wellen drehbar an diesen befestigt sind.
  2. Ein Apparat nach Anspruch 1, dadurch gekennzeichnet, daß dieser Apparat eine erste Zahnrolle und eine zweite Zahnrolle umfaßt, die jeweils an den Wellen, die die Schleifräder tragen, befestigt sind, wobei über diese Zahnrollen ein gezahnter Antriebsriemen läuft, der ferner über eine dritte Zahnrolle läuft, die wiederum durch eine dritte Trägerwelle getragen wird, an der ein Hilfsschleifrad befestigt ist, wobei dieser gezahnte Antriebsriemen durch eine gezahnte Antriebsrolle angetrieben wird, die mit einem Antriebsmechanismus verbunden ist.
  3. Ein Apparat nach den vorstehenden Ansprüchen, dadurch gekennzeichnet, daß dieser Antriebsmechanismus von einer verschiebbaren Platte gehalten wird, die mit diesem tragenden Rahmen verbunden und mit länglichen Schlitzen versehen ist, damit diese Platte zum Spannen dieses Riemens verschoben werden kann.
  4. Ein Apparat nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß diese Schleifräder ein flaches Oberflächenprofil haben.
  5. Ein Apparat nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß diese Schleifräder ein schneckenförmiges Profil haben.
  6. Ein Apparat nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das schneckenförmige Profil dieser Schleifräder an deren axialen Endbereichen abgerundet ist.
  7. Ein Apparat nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß dieser Apparat ferner eine Führungsplatte mit einer Kerbe umfaßt, die zwischen diesen Schleifrädern angeordnet und so geformt ist, daß sie die Position der zu schleifenden und zu schärfenden Klinge definiert.
  8. Ein Apparat nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß diese Führungsplatte mit einer Vertiefung an diesem Hilfsschleifrad ausgestattet ist, um hierin Scheren und ähnliches aufzunehmen.
  9. Ein Apparat nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß diese Schleifräder mit Diamantpulver beschichtet sind.
  10. Ein Apparat nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß diese Schleifräder mit Substanzen des auf dem Markt unter dem Markenname
    Figure imgb0001
    Borazon" bekannten Typs beschichtet sind.
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 EP0591109A1 (de) 1994-04-06
EP0591109B1 true 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)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT239376Y1 (it) * 1995-02-20 2001-02-26 Valex Spa Mola ad acqua migliorata
EP1745886A1 (de) * 2005-07-20 2007-01-24 Hans-Peter Zahnd Schleifgerät
ITMI20070758A1 (it) * 2007-04-13 2008-10-14 Fazzini Technology Dispositivo affilacotelli dotato di una struttura perfezionata
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

Family Cites Families (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
ZA851702B (en) * 1984-03-12 1985-10-30 Daniel D Friel Knife sharpener

Also Published As

Publication number Publication date
ITMI922042A0 (it) 1992-09-01
EP0591109A1 (de) 1994-04-06
ATE153269T1 (de) 1997-06-15
IT1256364B (it) 1995-12-04
DE69310853D1 (de) 1997-06-26
ITMI922042A1 (it) 1994-03-01
DE69310853T2 (de) 1997-12-18

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