EP0214943B1 - Einspannvorrichtung zum Schleifen von Messern - Google Patents

Einspannvorrichtung zum Schleifen von Messern Download PDF

Info

Publication number
EP0214943B1
EP0214943B1 EP86850280A EP86850280A EP0214943B1 EP 0214943 B1 EP0214943 B1 EP 0214943B1 EP 86850280 A EP86850280 A EP 86850280A EP 86850280 A EP86850280 A EP 86850280A EP 0214943 B1 EP0214943 B1 EP 0214943B1
Authority
EP
European Patent Office
Prior art keywords
grinding
handle
knife
attachment
plates
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
Application number
EP86850280A
Other languages
English (en)
French (fr)
Other versions
EP0214943A2 (de
EP0214943A3 (en
Inventor
Torgny Jansson
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
Priority to AT86850280T priority Critical patent/ATE77781T1/de
Publication of EP0214943A2 publication Critical patent/EP0214943A2/de
Publication of EP0214943A3 publication Critical patent/EP0214943A3/en
Application granted granted Critical
Publication of EP0214943B1 publication Critical patent/EP0214943B1/de
Expired legal-status Critical Current

Links

Images

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
    • B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives

Definitions

  • This invention relates to a grinding apparatus for knives in accordance with the preamble of claim 1. It is for instance intended for use with grinding machines provided with grind-stones and equipped with a fixed support of the type described in Swedish application 8306325-5.
  • the knives are different not only in respect of length and width but also in form which can be quite straight to more or less bent. Further more, the thickness of the knives varies and they have different cross-sectional forms. Last but not least important is that the knives have different edge angles due to different uses.
  • a grinding apparatus in the form of a flat support body, which is guided along a support extending parallel to the axis of the grinding disc and to which a knife to be grinded is to be clamped.
  • the flat, elongated body and then the knife can only be rotated around the axis of the support and not in any other direction. This means that the knife has to be clamped in an exact position in relation to the grinding surface of the disc. Further, once clamped to the body it is not possible to easily adjust the distance of the knife edge to the support, which adjustment is necessary to be able to get the right angle of the knife edge when grinding.
  • Fig. 1 shows a grinding apparatus according to the invention in section and in a position for grinding a knife
  • Fig. 2 is a lateral view of the grinding apparatus in section
  • Fig. 3 shows the grinding apparatus turned 90° relative to Fig. 2
  • Fig. 4 shows a section of the grinding apparatus as seen in a direction transversely to the length of the knife-blade.
  • Fig. 1 1 designates the grinding stone.
  • 2 designates a support in the form of a clamp fixedly secured to the grinding machine and having an arm 3 extending in parallel with the axle of the grindstone.
  • the grinding machine with support and arm is known per se and is not part of the invention, and therefore this will not be described more closely but it is referred in this connection to said Swedish application 8306325-5.
  • the grinding apparatus consists of a first clamping plate 4 and a second clamping plate 5 as well as a shaft 6 circular in section and fixedly secured to the first clamping plate.
  • This shaft is threaded along part of the end 7 turned away from the first clamping plate 4.
  • This extends in a bore 8 made in a handle 9 which in turn is provided with a radially extending stop 10, in this case in the form of a collar.
  • the bore 8 can either be completely threaded or have a threaded inset 11 fixed to the handle 9, as shown on the drawing.
  • FIG. 3 an example of the embodiment of the clamping plate 5 as seen in a top plan view is shown, and it is to be understood that the clamping plate 4 has the corresponding form except for the means of attachment 12 of the shaft 6.
  • the clamping plates 4 and 5 are mounted to each other by means of a screw 13, which in the example shown extends through the clamping plate 5 and is screwed into the threads of a busing 14 attached to the clamping plate 4.
  • the head of the screw 13 has a partly spherical inside which rests in a corresponding partly spherical seat of the clamping plate 5.
  • the distance between the plates 4 and 5 can be optionally adjusted by the aid of the screw 13 in dependence on the thickness of the knife 15 to be ground. Thanks to the partly spherical form of the inside of the screw head and its cooperating seat of the clamping plate 5 the plates can place themselves obliquely relative to each other and consequently adapt themselves to various forms of knives.
  • the clamping plate is further provided with a threaded hole 16, in the example shown made in a bushing 17 attached to the clamping plate.
  • a screw 19 provided with a wheel 18 engages the threads in the threaded hole 16 and bears with its free end on the clamping plate 4.
  • the threaded hole 16 is arranged on the other side of the screw 13 and, more specifically at a distance from this being greater than the distance between the edge portions and the screw 13.
  • a pair of guide pins 20 - see Fig. 4 - are attached to the plate 5.
  • the pins 20 extend freely movably through the corresponding openings in the plate 4.
  • a helical compression spring 21 is arranged around the respecitve pin 20 and between the plates 4 and 5. The springs 21 tend automatically to separate the plates 4 and 5 from each other which makes it easier to adapt the knife between the edge portions of the plates.
  • the apparatus By adjusting the screw 23 the apparatus can be adapted to the thickness of the current knife and the knife is clamped in the apparatus when the locking screw 19 is tightened.
  • the clamping plates 4 and 5 will thus adapt themselves automatically to the form of the relative knife independently whether this is conical in cross-section or in longitudinal direction.
  • the knife is locked in the apparatus and both sides of the knife edge can be ground by simply turning the jig 180°.
  • a low built-in type of adjusting screw 13 and locking screw 18 allows grinding of small edge angles (cf. Fig. 1).
  • clamping plates 4 and 5 it is possible also to grind thin knives, so-called fillet knives, which are easily bent at grinding by hand.
  • the thin knife is stiffened up effectively by means of the invention and can be ground with precision.
  • the grinding apparatus can be varied in several ways within the scope of the invention and the placement of the locking screw 19 can of course be varied.
  • the threads of the shaft 6 can instead also be disposed in the means of attachment of the first clamping plate 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Materials For Medical Uses (AREA)
  • Surgical Instruments (AREA)

Claims (7)

  1. Eine Schleifvorrichtung zum Schleifen der Schneiden eines Messers (15), wobei die Vorrichtung eine um ihre Achse drehbar antreibbare Schleifscheibe (1), eine sich parallel zur Achse der Schleifscheibe erstreckende, unbeweglich befestigte Halterung (3) und eine zum Einspannen des Messers vorgesehene Spanneinrichtung (4, 5) umfaßt, die so ausgebildet ist, daß sie längs der Halterung bewegt werden kann, gekennzeichnet durch einen Schaft (6), der mit einem seiner Enden an der Spanneinrichtung befestigt ist und der an seinem anderen Ende einen Handgriff (9) trägt, wobei das eine Ende des Schaftes entweder mit der Spanneinrichtung oder dem Handgriff in Gewindeeingriff steht und das andere Ende unbeweglich mit dem Handgriff bzw. der Spanneinrichtung verbunden ist, so daß die Spanneinrichtung und der Handgriff durch Drehen des Handgriffs aufeinander zu und voneinander weg bewegt werden können, ferner dadurch gekennzeichnet, daß der Handgriff einen sich radial erstreckenden Anschlag (10) aufweist, der den Schaft umgibt und der während des Schleifens an der Halterung anliegt.
  2. Eine Schleifvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Spanneinrichtung aus einer ersten, mit dem Schaft (6) verbundenen Spannplatte (4) und einer zweiten Spannplatte (5) besteht, wobei vorgesehen ist, den Rückenteil des zu schleifenden Messers (15) zwischen Randbereichen der Spannplatten (4, 5) einzuspannen, und daß die Spannplatten (4, 5) durch eine den gegenseitigen Abstand der Platten einstellende Schraube (13) miteinander verbunden sind.
  3. Eine Schleifvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß eine Feststellschraube (19) so angeordnet ist, daß sie in eine Gewindebohrung (16) eingeschraubt werden kann, die sich durch die Platte (5) erstreckt und auf der dem zu schleifenden Messer (15) abgewandten Seite der Einstellschraube (13) angeordnet ist, und daß die Feststellschraube (19) mit ihrem Ende mit der anderen Platte (4) im Eingriff steht.
  4. Eine Schleifvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Einstellschraube (13) mit einem Kopf versehen ist, dessen Unterseite eine teilweise sphärische Form aufweist und mit einem teilweise sphärischen Sitz einer Platte (5) zusammenwirkt.
  5. Eine Schleifvorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der Abstand zwischen der Feststellschraube (19) und der Einstellschraube (13) größer als zwischen dieser (13) und den Randbereichen ist.
  6. Eine Schleifvorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß eine der Platten (5) wenigstens einen unbeweglichen Führungsstift (20) aufweist, der mit einer in der anderen Platte (4) angeordneten Öffnung zusammenwirkt, und daß eine Druckfeder (21) zwischen den Platten (4, 5) in Verbindung mit dem Führungsstift (20) angeordnet ist.
  7. Eine Schleifvorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß der Schaft (6) unbeweglich in der ersten Platte (4) befestigt ist und an seinem äußeren Abschnitt ein Gewinde aufweist, das mit einem Gewinde in einer im Handgriff ausgebildeten Bohrung (8) im Eingriff steht.
EP86850280A 1985-09-02 1986-08-27 Einspannvorrichtung zum Schleifen von Messern Expired EP0214943B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86850280T ATE77781T1 (de) 1985-09-02 1986-08-27 Einspannvorrichtung zum schleifen von messern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8504072A SE450696B (sv) 1985-09-02 1985-09-02 Slipfixtur for knivar
SE8504072 1985-09-02

Publications (3)

Publication Number Publication Date
EP0214943A2 EP0214943A2 (de) 1987-03-18
EP0214943A3 EP0214943A3 (en) 1989-08-30
EP0214943B1 true EP0214943B1 (de) 1992-07-01

Family

ID=20361267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86850280A Expired EP0214943B1 (de) 1985-09-02 1986-08-27 Einspannvorrichtung zum Schleifen von Messern

Country Status (4)

Country Link
EP (1) EP0214943B1 (de)
AT (1) ATE77781T1 (de)
DE (1) DE3685864T2 (de)
SE (1) SE450696B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023135118A1 (en) 2022-01-14 2023-07-20 Tormek Ab A precision grinding jig and a grinding system
WO2023169834A1 (en) 2022-03-07 2023-09-14 Tormek Ab A grinding angle setting device, a grinding system and a method of setting a grinding angle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278560A (en) * 1993-06-01 1994-12-07 Richard Peter Scott Grinding jig
NO301528B1 (no) * 1996-03-15 1997-11-10 Helge Lien Slipeapparat for kniver
KR101281531B1 (ko) * 2012-02-14 2013-07-03 원텍 주식회사 의료용 레이저 전달장치
SE537247C2 (sv) 2012-05-03 2015-03-17 Tormek Ab Knivjiggaggregat
JP6246873B1 (ja) * 2016-08-03 2017-12-13 森　正明 包丁研磨システム
SE543256C2 (en) 2019-04-05 2020-11-03 Tormek Ab A grinding jig for a blade tool
SE543585C2 (en) 2019-04-05 2021-04-06 Tormek Ab An arrangement for grinding edged tools

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154999A (en) * 1936-05-21 1939-04-18 American Type Founders Inc Composing room saw
US2637145A (en) * 1949-11-12 1953-05-05 Ralph L Burke Machine for forming arcuate contours
FR1182060A (fr) * 1957-09-06 1959-06-22 Dispositif pour l'affûtage d'outils tranchants et lames d'outil, notamment pour le travail du bois
US3885352A (en) * 1974-07-19 1975-05-27 John R Juranitch Sharpening machine
US4338749A (en) * 1980-07-21 1982-07-13 Kiser Robert E Toolholder
SE453166B (sv) * 1986-05-13 1988-01-18 Tormek Ab Slipfixtur for slipning av saxar

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023135118A1 (en) 2022-01-14 2023-07-20 Tormek Ab A precision grinding jig and a grinding system
WO2023169834A1 (en) 2022-03-07 2023-09-14 Tormek Ab A grinding angle setting device, a grinding system and a method of setting a grinding angle

Also Published As

Publication number Publication date
EP0214943A2 (de) 1987-03-18
EP0214943A3 (en) 1989-08-30
SE450696B (sv) 1987-07-20
DE3685864D1 (de) 1992-08-06
SE8504072D0 (sv) 1985-09-02
ATE77781T1 (de) 1992-07-15
DE3685864T2 (de) 1993-02-25
SE8504072L (sv) 1987-03-03

Similar Documents

Publication Publication Date Title
US5431068A (en) Blade sharpener
US4216627A (en) Shear sharpener
US20080274678A1 (en) Grinding machine and a grinding jig therefore
EP0214943B1 (de) Einspannvorrichtung zum Schleifen von Messern
US4733501A (en) Honing guide
US20050183545A1 (en) Cutting chain grinder and method of grinding
US3779103A (en) Chipper chain grinder
CA1192749A (en) Chain-saw chain sharpening device
US4532736A (en) Sharpening device
WO1990013396A1 (en) Grinding apparatus
US4019286A (en) Hone for involute knife
US4912881A (en) Multiple angle dressing device for tools and stock
EP0958888B1 (de) Einspannvorrichtung zum Schleifen von scharfkantigen Werkzeugen
EP3059048B1 (de) Einstellbare schleifvorrichtung
US2140322A (en) Woodworking machine
US5033333A (en) Saw chain grinding machine
EP0225806A2 (de) Werkzeughalterung
CA1279485C (en) Drill bit sharpener
US2782570A (en) Grinding guide and carrier
EP0249588B1 (de) Vorrichtung zum Schleifen von Scheren
US2944376A (en) Grinder attachment for woodworking machines
US4095376A (en) Clamping device for use in sharpening shears and the like
US4198950A (en) Dressing device for wheels or the like
US3418757A (en) Lawn mower sharpener
US2579360A (en) Tool

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

AK Designated contracting states

Kind code of ref document: A2

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

17P Request for examination filed

Effective date: 19870918

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 NL

17Q First examination report despatched

Effective date: 19910517

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

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

Ref country code: BE

Effective date: 19920701

REF Corresponds to:

Ref document number: 77781

Country of ref document: AT

Date of ref document: 19920715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3685864

Country of ref document: DE

Date of ref document: 19920806

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

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

Ref country code: CH

Payment date: 19950829

Year of fee payment: 10

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

Ref country code: AT

Payment date: 19950830

Year of fee payment: 10

Ref country code: NL

Payment date: 19950830

Year of fee payment: 10

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

Ref country code: AT

Effective date: 19960827

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

Ref country code: CH

Effective date: 19960831

Ref country code: LI

Effective date: 19960831

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

Ref country code: NL

Effective date: 19970301

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 19970301

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: FR

Payment date: 20050809

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20050824

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20050825

Year of fee payment: 20

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050827

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20060826

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20