EP2712707B1 - Aiguiseur de couteau - Google Patents

Aiguiseur de couteau Download PDF

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Publication number
EP2712707B1
EP2712707B1 EP12006786.3A EP12006786A EP2712707B1 EP 2712707 B1 EP2712707 B1 EP 2712707B1 EP 12006786 A EP12006786 A EP 12006786A EP 2712707 B1 EP2712707 B1 EP 2712707B1
Authority
EP
European Patent Office
Prior art keywords
slot
whetting
angle
knife
sharpening slot
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
EP12006786.3A
Other languages
German (de)
English (en)
Other versions
EP2712707A1 (fr
Inventor
Udo Rieser
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.)
High Tech Ceramic
Original Assignee
High Tech Ceramic
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 High Tech Ceramic filed Critical High Tech Ceramic
Priority to EP12006786.3A priority Critical patent/EP2712707B1/fr
Priority to US14/023,522 priority patent/US9289883B2/en
Publication of EP2712707A1 publication Critical patent/EP2712707A1/fr
Application granted granted Critical
Publication of EP2712707B1 publication Critical patent/EP2712707B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B24D15/082—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 the elements being rotatable
    • 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
    • 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
    • B24B3/543—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives using hand or foot driven tools

Definitions

  • the invention relates to a knife sharpener with two cutting discs, which are rotatably mounted about the same axis of rotation, facing each other and facing side surfaces with Wetzvid which form between them a sharpening slot which widens radially outward, and with a housing which the Wetzin surrounds and has a knife guide slot over the sharpening slot which extends at an angle to the sharpening slot.
  • Such a knife sharpener is for example from the DE 43 41 872 A1 known.
  • the knife sharpener described and illustrated there has two frusto-conical Wetzlitn on which form a V-shaped sharpening slot between them. Since the sharpening slot and the knife guide slot are at an angle to each other, the knife blade, as it projects through the knife guide slot into the sharpening slot, abuts one blade side on one splitter disc and the other blade side on the other splitter disc. When pulling the knife blade through the guide and the sharpening slot the Wetzusionn be placed in a rotary motion and produce a to the cutting edge substantially transverse -. B. below 70 ° running - cut.
  • the two rotatably mounted on a shaft washers or the shaft is pivotable about one end of the shaft such that the shaft forms an angle relative to the direction of sharpening of the knife, ie with respect to the longitudinal axis of the guide slot, which in the one end position the shaft is smaller and in the other end position greater than 90 °.
  • the two whetting discs are also truncated cones, which form a V-shaped sharpening slot between them.
  • US 2,114,106 A is a knife sharpener with two Wetzin known which are rotatably mounted about the same axis of rotation, facing each other and facing each other, abutting convex side surfaces with Wetz lake which form between them a sharpening slot which widens radially outward, wherein the two Wetzeptn one each Have central through-hole, which are traversed by a common shaft which is rotatably mounted about the rotation axis.
  • the annular surface which encloses the through hole and forms the side surface is convexly formed in such a manner that the side surfaces abut each other at the center of the annular surfaces and form a widening slot radially outward and radially inward, respectively.
  • a housing surrounds the whetting discs and has a knife guide slot above the sharpening slot which extends at an angle to the sharpening slot.
  • the object of the invention is to improve a generic knife sharpener so that it can be ground as needed with him knife.
  • each knife blade can be ground in its thickness direction with a grinding angle according to the technical requirements or according to the wishes of the user. Because at least one of the two wetting surfaces is convex in the radial direction, the grinding angle on this side of the knife blade depends on the height position of the knife blade in the sharpening slot. Since the sharpening slot widens radially outward from the slot base, the grinding angle is smallest in relation to a plane perpendicular to the axis of rotation in the slot base. That is, the deeper a knife blade projects into the sharpening slot, the smaller or sharper the grinding angle.
  • grinding angle can now be selected with which the knife blade is to be ground.
  • the opening width of the sharpening slot which is in the projection of the knife guide slot, set along the convex shape. That is, it is determined to which altitude which opening width should belong with which grinding angle. In this way, it is determined with which grinding angle a knife blade is ground depending on its thickness when the knife blade is guided down as deep as possible in the sharpening slot.
  • the convex shape is formed as a polygon.
  • a Wetz Scheme at least two annular Wetzvidabête coaxial with the axis of rotation forming with the opposite other Wetz Chemistry in the radial direction outwardly sections widening opening angle, wherein in the radially outward direction of at least the second and each Wetz inhabitabites with respect to the previous Wetz inhabitabrough inclined to the side, which faces away from the previous opening angle.
  • the convex shape is formed as a continuous curve.
  • the two wetting surfaces are mutually mirror-symmetrical and rotationally symmetrical with respect to the axis of rotation.
  • the knife blade is ground identically on both sides and along the entire blade length.
  • both Wetz insects have symmetrical training in the form of a polygon at least a first and a second Wetz lakeabites, each facing each other and extending in the radial direction outward over at least one third of Shurfschlitzhoff and each have a tilt angle to the median plane of the Schwarzrfschlitzes in the range of 13 ° to 17 ° or 18 ° to 22 ° form.
  • a knife sharpener designed in this way, a large variety of commercially available knives can be readily ground under almost optimum conditions.
  • the tangents in the radial outward direction in the amount of one third of Schwarzer each have an inclination angle to the center plane of the sharpening slot in the range of 13 ° to 17 ° and two-thirds of the sharpening height in the range of 18 ° to 22 °.
  • a knife sharpener can be ground optimally because of the possible fine gradations largely all standard knife blades.
  • the angle between the knife guide slot and sharpening slot is adjustable.
  • the assignment of opening width to the altitude within the sharpening slot and thus the grinding angle is changeable.
  • the maximum depth with which a knife blade can protrude into the sharpening slot as a function of its thickness and thus the minimum possible grinding angle for a given blade thickness is set.
  • the angle between the knife guide slot and Shurfschlitz is preferably adjustable in the range of 5 ° to 25 °. With this range, the maximum possible penetration depth of a knife blade in the sharpening slot and thus also the existing grinding angle can be adjusted in a range that covers the known requirements and needs when grinding knives.
  • a knife sharpener 1 according to the invention shown in the figures have two cutting disks 2, 3 and a housing 4, in which the two cutting disks 2, 3 are arranged.
  • the two Wetzepticn 2, 3 each have a central passage opening 5, 6, which are traversed by a common shaft 7.
  • the Wetzeptn 2, 3 are opposite each other on the shaft 7 and are rotatably connected with her.
  • the shaft 7 itself is rotatably mounted in the housing 4 about a rotation axis 8.
  • the two Wetzincin 2, 3 have facing Wetzvid 11, 12, which form a circumferential annular gap or Wegrfschlitz 13 between them.
  • the sharpening slot 13 extends from the slot base 14 monotonically radially outward.
  • the opposing Wetzdon 11, 12 are convex and to a plane 15 which is perpendicular to the axis of rotation 8 through the slot bottom 14, formed symmetrically.
  • This plane 15 is also referred to as the center plane of the sharpening slot 13.
  • the Wetzvid 11, 12 are rotationally symmetrical.
  • the Wetzvid 11, 12 in the form of a continuous convex curve 16, 17 are formed.
  • the convex shape of Wetzvid 11, 12 is formed by a polygon 20, 21.
  • the polygon 20, 21 consists of two adjacent, rotating in the direction of rotation annular surfaces 22, 23 which are differently inclined to the median plane 15 of the sharpening slot 13.
  • the radially inner annular surface 22 by an angle ⁇ 3 of about 15 ° and the radially outer annular surface 23 inclined by an angle ⁇ 4 of about 20 ° to the median plane 15 of the sharpening slot 13.
  • the radially inner annular surface 22 extends approximately over the lower half of the sharpening slot 13 and the radially outer annular surface 23 approximately over the upper half of the sharpening slot thirteenth
  • a guide slot 24 is disposed above the sharpening slot 13 in the housing 4.
  • the width of the guide slot 24 corresponds approximately to the opening width of the sharpening slot 13 at its radially outer end and is constant over the length of the guide slot 24.
  • guide slot 24 and sharpening slot 13 are mutually inclined by an inclination angle ⁇ , which is about 14 ° in the illustrated embodiment.
  • the inclination angle ⁇ can be adjusted by means of a suitable adjustment within a predetermined range to a desired size, either by rotatability of the housing 4 or a housing part, the position of the guide slot 24 is changed or by pivoting the shaft 7 perpendicular to its axis of rotation 8, the position of Sharpening slot 13 is changeable or by a combination of both measures.
  • the housing 4 or housing part and the Wetzusionn 2, 3 in the desired set angular position ⁇ locked to each other so that they do not change their position relative to each other 2, 3, 4 when Hinandherbe admire the knife blade.
  • the inclination angle ⁇ between the guide slot 24 and sharpening slot 13 of that circular arc on the Wetzdon 11, 12, on which a knife blade is ground with a given thickness is determined by the inclination angle ⁇ between the guide slot 24 and sharpening slot 13 of that circular arc on the Wetzdon 11, 12, on which a knife blade is ground with a given thickness.
  • this arc can be changed with changing requirements. It is conceivable, for example, an adjustability in the range of 5 ° to 25 °.

Landscapes

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

Claims (8)

  1. Aiguiseur de couteau, comportant
    deux disques d'aiguisage (2, 3) qui sont montés mobiles en rotation autour d'un même axe (8), opposés l'un à l'autre et comprennent des surfaces latérales convexes (9, 11 ; 10, 12) tournées l'une vers l'autre, en appui l'une contre l'autre et pourvues de surfaces d'aiguisage (11, 12) qui définissent entre elles une fente d'aiguisage (13) qui va en s'évasant radialement vers l'extérieur, les deux disques d'aiguisage (2, 3) présentant chacun une ouverture de passage centrale (5, 6) qui sont traversées par un arbre commun (7) qui monté mobile en rotation autour de l'axe de rotation (8), et comportant
    un boîtier (4) qui entoure les disques d'aiguisage (2, 3) et qui présente au-dessus de la fente d'aiguisage (13) une fente de guidage de couteau (24) qui s'étend sous un angle (α) par rapport à la fente d'aiguisage (13),
    dans lequel
    les surfaces latérales (9, 11 ; 10, 12) s'appuient l'une contre l'autre par des surfaces d'appui (9, 10), et ces surfaces d'appui (9, 10) sont adjacentes aux ouvertures de passage (5, 6) et s'étendent perpendiculairement à l'arbre (7), et
    en direction radiale, au moins une première des surfaces d'aiguisage (11) est réalisée convexe, et la seconde surface d'aiguisage (12) est réalisée de façon rectiligne ou également convexe.
  2. Aiguiseur de couteau selon la revendication 1,
    caractérisé en ce que
    la forme convexe est réalisée sous forme de tracé polygonal (20, 21).
  3. Aiguiseur de couteau selon la revendication 1,
    caractérisé en ce que
    la forme convexe est réalisée sous forme de courbe constante (16, 17).
  4. Aiguiseur de couteau selon l'une des revendications 1 à 3,
    caractérisé en ce que
    les deux surfaces d'aiguisage (11, 12) sont réalisées à symétrie plane l'une par rapport à l'autre et à symétrie de révolution par rapport à l'axe de rotation (8).
  5. Aiguiseur de couteau selon les revendications 2 et 4,
    caractérisé en ce que
    les deux surfaces d'aiguisage (11, 12) présentent au moins une première et une seconde portion de surface d'aiguisage (22, 23) qui sont opposées l'une à l'autre et qui s'étendent en direction radiale vers l'extérieur chacune sur au moins un tiers de la hauteur (h) de la fente d'aiguisage et qui définissent chacune un angle d'inclinaison (β3, β4) par rapport au plan central (15) de la fente d'aiguisage (13) dans la plage de 13° à 17° ou de 18° à 22°.
  6. Aiguiseur de couteau selon les revendications 3 et 4,
    caractérisé en ce que
    dans les deux surfaces d'aiguisage (11, 12), les tangentes (18) ont en direction radiale vers l'extérieur, à la hauteur du tiers de la hauteur (h) de la fente d'aiguisage, chacune un angle d'inclinaison (β1) par rapport au plan central (15) de la fente d'aiguisage (13) dans la plage de 13° à 17°, et les tangentes (19) ont, à la hauteur de deux tiers de la hauteur (h) de la fente d'aiguisage, chacune un angle d'inclinaison (β2) dans la plage de 18° à 22°.
  7. Aiguiseur de couteau selon l'une des revendications 1 à 6,
    caractérisé en ce que
    l'angle (α) entre la fente de guidage de couteau (24) et la fente d'aiguisage (13) est réglable.
  8. Aiguiseur de couteau selon la revendication 7,
    caractérisé en ce que
    l'angle (α) entre la fente de guidage de couteau (24) et la fente d'aiguisage (13) est réglable dans une plage de 5° à 25°.
EP12006786.3A 2012-09-28 2012-09-28 Aiguiseur de couteau Active EP2712707B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12006786.3A EP2712707B1 (fr) 2012-09-28 2012-09-28 Aiguiseur de couteau
US14/023,522 US9289883B2 (en) 2012-09-28 2013-09-11 Knife sharpener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12006786.3A EP2712707B1 (fr) 2012-09-28 2012-09-28 Aiguiseur de couteau

Publications (2)

Publication Number Publication Date
EP2712707A1 EP2712707A1 (fr) 2014-04-02
EP2712707B1 true EP2712707B1 (fr) 2019-07-03

Family

ID=47008255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12006786.3A Active EP2712707B1 (fr) 2012-09-28 2012-09-28 Aiguiseur de couteau

Country Status (2)

Country Link
US (1) US9289883B2 (fr)
EP (1) EP2712707B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3062329B1 (fr) * 2017-02-02 2020-01-10 Sogest Dispositif d'affutage
CN107627158A (zh) * 2017-09-18 2018-01-26 姚前华 一种磨刀器
CN108655837A (zh) * 2018-05-11 2018-10-16 柳州市怀远数控技术开发有限公司 一种双面齿形刀片的刀刃加工装置
CN108436611A (zh) * 2018-06-14 2018-08-24 陈金水 一种电动磨刀机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831863A (en) * 1928-04-30 1931-11-17 Pike Mfg Company Portable grinding machine
US2114106A (en) * 1935-08-20 1938-04-12 Geveke William Grinding device
US2504194A (en) * 1947-05-06 1950-04-18 George E Harrington Pencil pointing device
US2646653A (en) 1948-12-31 1953-07-28 Bessie F Murchison Grinder with meshing teeth for knives, etc.
BE556718A (fr) 1956-04-20
US2972840A (en) * 1957-04-17 1961-02-28 Clarence H Ludwig Blade sharpening apparatus
US3570193A (en) * 1969-08-01 1971-03-16 Francis T Barrett Mobile implement sharpening machine
DE3202742A1 (de) 1982-01-28 1983-08-04 Udo 6200 Wiesbaden Rieser Messerschaerfer
FI74230C (sv) 1986-02-04 1988-01-11 Fiskars Ab Oy Anordning för skärpning av knivar.
FI880233A (fi) 1988-01-20 1989-07-21 Fiskars Ab Oy Anordning foer skaerpning av knivar.
US5371977A (en) * 1993-08-17 1994-12-13 Liner; Christopher A. Portable, in-place sharpener for lawn mower blades and the like
DE4341872C2 (de) 1993-12-08 1996-09-19 Udo Rieser Manueller Messerschärfer
SE533559C2 (sv) * 2009-03-05 2010-10-26 Tore Eklund Sliphjul
CN102481676B (zh) * 2009-08-07 2015-04-08 埃奇克拉夫特公司 形成交叉磨削刀具刀刃的新式刃磨器
US8926408B2 (en) * 2012-05-03 2015-01-06 Tom Hiroshi Hasegawa Blade sharpener

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
US9289883B2 (en) 2016-03-22
EP2712707A1 (fr) 2014-04-02
US20140170941A1 (en) 2014-06-19

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