EP3038793B1 - Outil et agencement pour le traitement d'un bord de coupe - Google Patents

Outil et agencement pour le traitement d'un bord de coupe Download PDF

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Publication number
EP3038793B1
EP3038793B1 EP14840280.3A EP14840280A EP3038793B1 EP 3038793 B1 EP3038793 B1 EP 3038793B1 EP 14840280 A EP14840280 A EP 14840280A EP 3038793 B1 EP3038793 B1 EP 3038793B1
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EP
European Patent Office
Prior art keywords
tools
segments
tool
cutting edge
angle
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.)
Active
Application number
EP14840280.3A
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German (de)
English (en)
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EP3038793A1 (fr
EP3038793A4 (fr
Inventor
Tore Eklund
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EKLUND, TORE
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Individual
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Publication of EP3038793A4 publication Critical patent/EP3038793A4/fr
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
    • B24D15/08—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors
    • B24D15/081—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors with sharpening elements in interengaging or in mutual contact

Definitions

  • the invention concerns a device arranged for the treatment of a cutting edge.
  • the device according to the invention comprises a tool, which is mountable and combined in the device and which is operative for the treatment of a cutting edge, such as a knife-edge, by means of grinding, dressing, or polishing.
  • Devices and tools of this type are previously known, comprising tools, which are located opposite each other in pairs and which are mounted and mutually movable in reciprocating directions of motion, wherein the tools comprise a plurality of segments, which are arranged at spaces and have a respective contact surface, which segments are arranged to alternately engage the segments of the opposite tool, so that, between the contact surfaces of the opposed segments, there is formed a V-shaped notch of variable depth adapted for the insertion of a cutting edge to be treated, in addition to which at least one of the tools features segments having an active, grinding or dressing or polishing contact surface.
  • the knife-blade In the treatment of a knife, the knife-blade is inserted down into the V-shaped notch so that the cutting edge of the knife is pressed against the contact surfaces of the tools, whereupon the knife is brought to and fro, primarily in the longitudinal direction of the knife-blade but alternatively in an oscillating motion containing both horizontal and vertical direction components, the knife-edge being ground, dressed, or polished by wear against the active contact surfaces of the tools.
  • the tools are mounted in a respective holder, and are resiliently biased toward each other. Under load from the knife-blade inserted between the tools, the tools are pressed apart against the action of the biasing springs. Therefore, the depth of the V-shaped notch varies in relation to the load of the knife-blade on the tools.
  • US 1894579 relates to sharpening devices and more particularly to a device, adapted to sharpen the cutting edge of knives or other articles of cutlery irrespective of the bevel or taper of the edges.
  • An object of this document is to provide a device which is simple in construction, inexpensive to manufacture, and exceptionally efficient in operation.
  • the segments are integrated to a uniform block.
  • This block may be manufactured from a ceramic material, which itself is efficient for the grinding, dressing, or polishing of the knife-edge.
  • the block may alternatively be manufactured from metal or plastic having a surface layer applied to the active contact surfaces of the segments, such as grains of diamond or another mineral having a removing or polishing effect on the knife-edge.
  • Characteristic of devices of this type is that the result in the treatment of the knife-edge is partly depending on how the knife-blade is oriented between the tools. More precisely, for a satisfactory result, it is necessary that the knife-blade is horizontally oriented between the tools in the treatment of the straight part of the knife-edge. This is explained by the fact that the tools are integrally formed blocks, the mutual position of which is determined by the lowest point of the knife-blade, and therefore only the outermost segment of the respective block acts against the knife-edge if the knife-blade is angled during the treatment. This condition may in the long run also cause an uneven wear-out of the tools which, if applicable, therefore do not achieve the maximum service life.
  • the invention aims at obviating the above mentioned disadvantage and providing a device and a tool, which is less dependent on the knife-blade being brought in a horizontal path in the treatment of the cutting edge.
  • Another object is to provide a device and a tool, which protects the sensitive knife-edge against deformation caused by an exaggerated load upon depression of the knife-blade against the tools during the treatment of the cutting edge.
  • a further object is to provide a device and a tool, which in a simple way is readjustable for the treatment of knives having different angle of the knife-edge.
  • Said device is arranged for the treatment of a cutting edge
  • the device comprises tools, which are located opposite each other in pairs and each one of which comprises two or more segments, which are arranged at spaces and have a respective contact surface, at least one of the tools featuring segments having an active, grinding or dressing or polishing contact surface, and the segments of one tool being arranged to, in overlapping relationship, alternately engage between the segments of the opposite tool, so that, between the segments of the tools located opposite each other, a V-shaped notch is formed for the insertion of a cutting edge, which, in contact with the contact surfaces of the segments, is to be treated by longitudinal motion of the cutting edge in the longitudinal direction of the notch, the tools being mutually movable for the adaptation of the width and depth of the notch in relation to the load of the cutting edge on the tools, wherein the individual tool features a holder in which the two or more segments are individually movably mounted and, independently of the other segments of the same tool, spring biased toward the opposite tool.
  • Each segment is assigned an inner and an outer end stop, which determine the possible movement length of the segment, the same being determined in such a way that, in the outer end positions of the segments, a gap-shaped opening is formed between the segments of the opposite tools, in the bottom of the V-shaped notch.
  • the first mentioned object is thus met in a device of the kind mentioned by way of introduction, wherein the segments of an individual tool are individually and independently of the other segments of the same tool movably mounted in a holder arranged for the purpose, as well as biased in relation to the holder in the direction of an opposite tool.
  • An advantage of said solution is that the active contact surfaces of all segments are brought into abutting contact with the cutting edge of the knife-blade, also if the knife-blade is angled and moved in a non-horizontal or arched path between the tools.
  • the tools may be arranged for the treatment of one-sided ground and sharpened knives.
  • one of the tools is operative for the treatment of the cutting edge while the other tool only serves as anvil.
  • the abutting tool usually features a vertical support surface, perpendicular to the base or bottom of the device, while the active tool typically features an oblique, straight, or arched contact surface toward the one-sided shaped cutting edge.
  • Said V-shaped notch comprises in this particular embodiment a vertical leg and an angled leg.
  • the V-shaped notch comprises two angled legs, and usually with a bisector extending perpendicular to the base of the device.
  • the tools are assigned an inner and an outer end stop, which determine the possible movement length of the tools, the same being determined in such a way that the tools in their outer end positions form a gap-shaped opening in the bottom of the V-shaped notch.
  • the cutting edge will accordingly not meet any obstacle that could damage it. It will be appreciated that the air gap which is formed between the tools in their outer end positions should not exceed the thickness of the knife-blade, and it may in most applications amount to the order of 1-2 mm.
  • At least one of the tools is adjustably arranged in the device, and more precisely readjustable from a first position, wherein the tools located opposite each other form an intermediate first angle, to a second position, wherein the tools form an intermediate second angle different from the first angle.
  • the tools are adjustably arranged in pairs and continuously variably or in fixed steps readjustable for changing the intermediate angle. It is in that connection preferred that the tools are readjustable for the setting of an intermediate angle at least within the interval of 30-40, and most preferred that the intermediate angle can be varied within the interval of 15-60°.
  • the angular setting function may advantageously be formed so that the tools are positively adjustable so that the bisector of the intermediate angle in all angular setting positions extends perpendicular to the base of the device. This may, for example, be achieved by the tools being mutually turnably coupled by a swivel joint located to the bisector, as well as movable in relation to a ramp, wherein, by relative rotation or displacement between ramp and holder, the holders are brought to turn in said swivel joint.
  • the segments may be made as ceramic bodies, which, due to the intrinsic properties of the ceramic material, are effective for the treatment of the cutting edge in the form of grinding, polishing, or dressing/steeling.
  • the segments may alternatively be made as bodies of plastic or metal, which, in the contact surface, are coated with diamond or another removing material.
  • the segment features a separately manufactured metal profile, which is fitted on the contact surface and coated with diamond or another removing material for the treatment of the cutting edge.
  • Figs. 1 and 2 shows in partially broken-away side views a station 1 comprising tools 2 and 3 in a device for the treatment of a cutting edge, such as a knife-edge 4.
  • the tools 2 and 3 support contact surfaces 5 and 6 (see Fig. 2 ) against which the knife-edge is pressed by a downwardly directed force F and is moved to and fro, in a motion essentially perpendicular to the plane of the drawing.
  • the contact surfaces 5 and 6 are formed on a side edge of the respective segment included in the tool, and, during the wear of the knife-edge against the contact surfaces, effective to provide a machining of and improvement in the knife-edge.
  • a device for the treatment of a knife-edge may contain a plurality of corresponding stations having tools the contact surfaces of which are arranged for different types of treatments, such as grinding, polishing, or dressing/steeling of the knife-edge.
  • the tools 2 and 3 are fitted in a respective holder 7 and 8 to be mutually movable in opposite directions of motion.
  • a boss 9 or 10 in the back side of the tool is for the purpose movably mounted in the holder in question, springs 11 and 12 acting between holders and tools for the bias of the tools toward each other and from the respective holder.
  • the tools are controlled in their movements, on one hand by the fact that the lower edges of the tools are running in grooves 13 formed in the base 14 of the device, and on the other hand by the fact that the upper edges of the tools are running in grooves 15 formed on the inside of a lid or cover 16.
  • the cover 16 typically extends down to the base 14 on both sides of the device, but features an opening 17 for the insertion of the knife-blade.
  • the length of the movements of the tools 2 and 3 in reciprocating directions is limited by an inner end stop 18 and an outer end stop 19.
  • the inner end stop 18 is placed to guarantee that a V-shaped notch 20 initially is provided between the tools to allow insertion of the knife-blade when the tools are situated in their most brought-together position, as is shown in Fig. 1 .
  • the outer end stop 19 is placed to guarantee a narrow air gap 21 between the tools when these are situated in their most separated position, as is shown in Fig. 2 .
  • the width of the air gap may amount to from approx. 0,5 mm to approx. 2 mm, and should not allow that the knife-edge reaches up to the base 14 of the device in the most separated position of the tools.
  • each one of the tools consists of a number of, and more precisely at least two or more, separate segments 2', 2", etc. and 3', 3", etc., respectively, which are individually movably mounted in the appurtenant holder 7 and 8. Consequently, each one of the segments features a boss individually mounted in the holder, and each segment is assigned a separate spring, which biases the individual segment individually in the direction from the holder, i.e., toward the opposite tool in the fitted position of the tools.
  • a guiding groove 13 is formed in the base 14 of the device for the lower edge of each one of the segments.
  • separate guiding grooves for the upper edge of each one of the segments are arranged on the inside of the cover of the device.
  • Each one of the segments is consequently also assigned separate inner and outer end stops 18 and 19 arranged in the respective guiding groove 13.
  • the guiding grooves 13 and 14 are separated by partition walls, which allow the segments of one tool to move in a space formed between adjacent segments of the opposite tool.
  • the segments 2', 3', etc. may be compared to four-sided plates from which a corner has been cut off so that a fifth side edge is formed to constitute the contact surface 5 or 6 that machines the knife-edge.
  • the contact surfaces just as well alternatively may be concavely or convexly arched for the treatment of knife-edges having the corresponding shape. In all cases, the contact surfaces are oriented so that, between opposite contact surfaces, an intermediate angle ⁇ is formed, which determines the angle of the treated knife-edge.
  • a device in which the tools 2 and 3 with appurtenant segments 2', 3', etc. are movably mounted and readjustable for the alteration of the intermediate angle ⁇ of the active contact surfaces. More precisely, an angular setting function is shown wherein the tools are positively adjustable so that the bisector B of the intermediate angle extends perpendicular to the base of the device in all angular setting positions.
  • the tools 2 and 3 with appurtenant holders 7 and 8, respectively, may for the purpose be carried by each a respective separate part 22 and 23 of the base of the device, in addition to which the parts 22 and 23 of the base are mutually turnably coupled by a joint 24 located to the bisector B.
  • the base parts 22 and 23 rest on a plate 25, which is movably arranged in relation to the base parts 22 and 23. Upon displacement of the plate 25 in relation to the base parts and the tools, in the direction of the arrow according to Fig. 4b , the base parts 22 and 23 are lifted by a respective ramp 26 and 27 under mutual rotation of the base parts in said joint 24.
  • a rotation-controlled setting function may alternatively be realised in the form of two rotatably arranged plates 25 having cam curves formed in the upper sides of the plates , the two plates being in engagement with each other by external teeth for simultaneous and similar rotation on the respective shafts thereof.
  • the angular setting may be arranged to be effected in fixed steps or continuously variably, wherein, at least in the latter case, the setting function may comprise a locking, which fixes the tools in the set position.
  • the intermediate angle ⁇ between tools/contact surfaces may be varied within an angle interval, which may amount to the order of 15-60°, or if required even more.
  • An advantage achieved by the invention is a simplified production of tools and segments. This advantage is possibly the greatest what concerns tools consisting of ceramic material, because pressing and sintering of flat segments is a considerably less complicated process than, e.g., the production of an integrally formed and segmented block.
  • the tool of the device according to the invention consists of individually movably mounted and biased segments, the need of finishing and complex mould manufacturing largely disappears, and therefore, production of tools of metal or plastic is also considerably simplified compared with production of continuous blocks.
  • FIG. 5 An embodiment of a separate and replaceable contact surface is shown in Fig. 5 in the form of a rail 28, which comprises folded-over edges 29, 30, which are insertable in grooves of the corresponding shape, recessed in opposite side surfaces of a segment 2'.
  • the rail 28 may be made of metal and arranged to be fixed on the segment by, e.g., clamping, shrinkage, or agglutination.
  • the rail 28 is typically coated with diamond or another material-removing or in another way machining material for the treatment of a knife-edge.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (7)

  1. Dispositif agencé pour le traitement d'une arête de coupe, comprenant des outils (2 ; 3), qui sont situés à l'opposé les uns des autres par paires et dont chacune comprend deux segments (2', 2", 2"' ; 3', 3", 3"') ou plus, qui sont agencés au niveau d'espaces et présentent une surface de contact respective (5 ; 6), au moins un des outils (2 ; 3) affichant des segments présentant une surface de contact active, de meulage ou de dressage ou de polissage, et les segments d'un outil étant agencés pour, en relation de chevauchement, s'engager alternativement entre les segments de l'outil opposé, de sorte que, entre les segments des outils situés à l'opposé les uns des autres, une encoche en forme de V (20) est formée pour l'insertion d'une arête de coupe, qui, en contact avec les surfaces de contact des segments, doit être traitée par un mouvement longitudinal de l'arête de coupe dans la direction longitudinale de l'encoche, les outils étant mutuellement mobiles pour l'adaptation de la largeur et de la profondeur de l'encoche en fonction de la charge de l'arête de coupe sur les outils, dans lequel l'outil individuel (2 ; 3) affiche un support (7 ; 8) dans lequel les deux segments (2', 2", 2"' ; 3', 3", 3"') ou plus sont montés individuellement de manière mobile et, indépendamment des autres segments du même outil, sont sollicités par ressort vers l'outil opposé, et caractérisé en ce que chaque segment est associé à une butée d'extrémité intérieure (18) et extérieure (19), qui détermine la longueur de mouvement possible du segment, celle-ci étant déterminée de telle sorte que, dans les positions d'extrémité extérieures des segments, une ouverture en forme de fente (21) est formée entre les segments des outils opposés, dans le fond de l'encoche en forme de V.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'il affiche une base (14), dans le côté orienté vers le haut de laquelle une rainure respective (13) est formée, formant un guidage pour chacun des segments mobiles individuellement (2', 3', etc.), les butées d'extrémité extérieure et intérieure étant agencées dans les fonds desdites rainures.
  3. Dispositif selon la revendication 2, caractérisé en ce qu'au moins un des outils (2 ; 3) est agencé de manière ajustable par le fait que le support qui en dépend (7 ; 8) est agencé de manière tournante sur un joint pivotant (24), et réajustable à partir d'une première position, dans lequel les segments (2', 2", 2", 2"' ; 3', 3", 3''') des outils (2; 3) situés à l'opposé les uns des autres forment un premier angle intermédiaire (a), vers une seconde position, dans lequel les segments (2', 2", 2"' ; 3', 3", 3"') des outils (2 ; 3) situés à l'opposé les uns des autres forment un second angle intermédiaire (a') différent du premier angle (a).
  4. Dispositif selon la revendication 3, caractérisé en ce que les outils (2 ; 3) sont réajustables en continu de manière variable ou par étapes fixes pour changer l'angle intermédiaire (a ; a').
  5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que les deux outils (2; 3) sont agencés de manière ajustable par le fait que les supports qui en dépendent (7 ; 8) sont agencés de manière tournante sur le joint pivotant (24) et peuvent être réajustés de façon à ce que la bissectrice (B) de l'angle intermédiaire s'étende perpendiculairement vers la base (14) du dispositif dans toutes les positions de réglage angulaire.
  6. Dispositif selon la revendication 5, caractérisé en ce que les outils (2 ; 3) sont couplés mutuellement de manière tournante par un joint pivotant (24) se trouvant dans l'extension de la bissectrice (B), ainsi que reposant sur une plaque (25), qui est agencé de manière mobile par rapport aux outils et qui, lors du déplacement par rapport aux outils, amène ceux-ci à tourner sur le joint pivotant (24) par l'effet d'une rampe respective (26 ; 27), agencée sur la plaque (25) ou sur l'outil (2 ; 23).
  7. Dispositif selon l'une quelconque des revendications 3-6, caractérisé en ce que les outils (2 ; 3) sont réajustables pour le réglage d'un angle intermédiaire (a) de l'ordre de 15-60°.
EP14840280.3A 2013-08-29 2014-08-26 Outil et agencement pour le traitement d'un bord de coupe Active EP3038793B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1350999A SE538826C2 (sv) 2013-08-29 2013-08-29 Anordning och verktyg för behandling av en skärande egg
PCT/SE2014/050971 WO2015030655A1 (fr) 2013-08-29 2014-08-26 Outil et agencement pour le traitement d'un bord de coupe

Publications (3)

Publication Number Publication Date
EP3038793A1 EP3038793A1 (fr) 2016-07-06
EP3038793A4 EP3038793A4 (fr) 2017-07-19
EP3038793B1 true EP3038793B1 (fr) 2021-06-16

Family

ID=52587045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14840280.3A Active EP3038793B1 (fr) 2013-08-29 2014-08-26 Outil et agencement pour le traitement d'un bord de coupe

Country Status (3)

Country Link
EP (1) EP3038793B1 (fr)
SE (1) SE538826C2 (fr)
WO (1) WO2015030655A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE539499C2 (en) * 2015-05-21 2017-10-03 Eklund Tore A grinder / polisher apparatus and a grinding element for that
JP6384686B2 (ja) * 2017-01-10 2018-09-05 パルステック工業株式会社 Ｖ溝深さ可変ステージ及びｘ線回折測定装置
DE202017005641U1 (de) * 2017-11-02 2018-11-07 Josef Luber Vorrichtung zum manuellen Messerschleifen mit zwei linear beweglichen Schleifstählen
DE102017011680A1 (de) * 2017-12-18 2019-06-19 Zwilling J. A. Henckels Aktiengesellschaft Messerschärfvorrichtung
CN110052977A (zh) * 2018-01-19 2019-07-26 尹金树 手磨磨刀具
US11253968B2 (en) 2018-08-08 2022-02-22 Smith's Consumer Products, Inc. Adjustable sharpener
CN109623679B (zh) * 2019-01-14 2019-11-08 泰山石膏（宣城）有限公司 一种便于拆卸清洁的高效刀具打磨装置
SE544513C2 (sv) 2020-04-13 2022-06-28 Tore Eklund Anordning för bearbetning av skärande egg

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DE64085C (de) * the PEER maNUFACTURING company in New-York, 56 Warren Street, V. St. A Messerschärfer
US1894579A (en) 1928-01-12 1933-01-17 Blankner William Knife sharpener
US2024860A (en) * 1934-04-03 1935-12-17 Olympic Ind Corp Self contained electric knife sharpener
GB517242A (en) * 1938-08-20 1940-01-24 James Chantry Improvements in knife sharpeners
US4624079A (en) * 1985-04-29 1986-11-25 Bonapace Mario J Knife sharpener
DE3627883A1 (de) * 1985-05-03 1988-02-18 Carl Gmaehle Handschleifgeraet
DE3515934A1 (de) * 1985-05-03 1986-11-06 Carl 7060 Schorndorf Gmähle Handschleifgeraet
DE10044614A1 (de) * 1999-10-30 2001-05-10 Georg Krause Vorrichtung zum Aktivieren und Abziehen von Schneidwerkzeugen
US6769327B2 (en) * 2001-10-18 2004-08-03 Furitechnics Pty Ltd. Knife and blade sharpener
SE532368C2 (sv) * 2008-05-02 2009-12-22 Tore Eklund Anordning för bearbetning av en egg eller en kant, samt slipblock utformat för ändamålet

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Also Published As

Publication number Publication date
EP3038793A1 (fr) 2016-07-06
WO2015030655A1 (fr) 2015-03-05
SE1350999A1 (sv) 2015-03-01
SE538826C2 (sv) 2016-12-20
EP3038793A4 (fr) 2017-07-19

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