EP0431273A2 - Dispositif d'affûtage de couteaux ou objets similaires - Google Patents

Dispositif d'affûtage de couteaux ou objets similaires Download PDF

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Publication number
EP0431273A2
EP0431273A2 EP90118787A EP90118787A EP0431273A2 EP 0431273 A2 EP0431273 A2 EP 0431273A2 EP 90118787 A EP90118787 A EP 90118787A EP 90118787 A EP90118787 A EP 90118787A EP 0431273 A2 EP0431273 A2 EP 0431273A2
Authority
EP
European Patent Office
Prior art keywords
sharpening
points
particular according
knife
steel
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
EP90118787A
Other languages
German (de)
English (en)
Other versions
EP0431273A3 (en
EP0431273B1 (fr
Inventor
Horst Gräfe
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.)
Zwilling JA Henckels AG
Original Assignee
JA Henckels Zwillingswerk AG
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 JA Henckels Zwillingswerk AG filed Critical JA Henckels Zwillingswerk AG
Priority to AT90118787T priority Critical patent/ATE99209T1/de
Publication of EP0431273A2 publication Critical patent/EP0431273A2/fr
Publication of EP0431273A3 publication Critical patent/EP0431273A3/de
Application granted granted Critical
Publication of EP0431273B1 publication Critical patent/EP0431273B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a device for sharpening knives or the like according to the preamble of the main claim.
  • the sharpening points are formed by sharpening elements which are designed as fixed steel pins or as steel rollers rotatably mounted on two axes arranged parallel to the direction of pull of the knife.
  • the sharpening elements face each other so that the two sides of the knife edge can be sharpened at the same time.
  • the use of steel as the material for the sharpening points has the disadvantage that the knife edge has an undesirable burr after sharpening.
  • many small flare eruptions are observed, so that the flute is very rough after sharpening with steel sharpening elements.
  • the invention is therefore based on the object of providing a generic device for sharpening knives or the like with increased sharpening performance which, despite high material abrasion, achieves minimal wading roughness.
  • the sharpening points made of ceramic material are arranged after the sharpening points made of steel in the pulling direction of the knife. It proves to be advantageous here to design the sharpening points as paired, opposing sharpening elements, between which the knife edge is pulled during sharpening.
  • the sharpening elements lying opposite each other are disc-shaped and rotatably arranged on two axes extending parallel to the direction of pull, the distance between the two axes being smaller than the diameter of the rolling sharpening discs.
  • the sharpening elements are designed as flat cylinders made of steel and ceramic and have sharp edges. To achieve a high level of sharpening, it is sufficient to arrange a pair of steel discs and ceramic discs one after the other in the prescribed manner.
  • the ceramic material is preferably corundum ( Al 2 0 3 ).
  • the use of only two paired sharpening elements has proven to be particularly advantageous, since this means that the support of the sharpening elements on the knife edge is determined statically due to the almost reached two-point bearing, and it is thereby ensured that the knife edge at the, even with slight tolerances in the geometry of the sharpening elements Use of the device is acted upon equally by both the steel sharpening elements and the ceramic sharpening elements. In addition to high sharpening performance, this also results in low wading roughness. It is particularly advantageous to arrange the pair of ceramic rollers directly next to the wall of the housing receiving the sharpening elements. This arrangement minimizes the unsharpened area of the knife from the handle.
  • the housing has slots in its housing walls for guiding the knife edge.
  • the depth of the slots is such that their apices lie below the degrees formed by the two gussets of the pairs of disks.
  • the sharpening elements 2 are mounted in a plastic housing 1.
  • the plastic housing has a passage 10 and a material extension 12 that extends a housing wall towards the underside.
  • the flat underside 14 of the device can be placed on a table top or the like in such a way that the edge of the table is overlapped by the material extension 12, as a result of which the device is firmly held on the table top.
  • the sharpening elements 2 are mounted in a shaft 11 of the plastic housing 1, which is formed by the two side walls 9 and 9 '.
  • the side walls each have a slot 8, 8 ', which serves to guide the knife edge.
  • two metal axes 6, 6' are clamped parallel to one another such that their distance from one another is less than the diameter of the sharpening elements 3, 3 ', 4, which are designed as disks rotatably mounted on the axes 6, 6'. 4 '. This ensures that the ceramic disks 3, 3 'or the steel disks 4, 4 'overlap.
  • the gusset 13 formed by the overlapping disks is aligned with the slots 8, 8 '.
  • the order of the sharpening elements 2 is chosen so that the ceramic disc pair 3, 3 'is arranged directly next to the housing wall 9' and the steel disc pair 4, 4 'is then positioned immediately, further away from the housing wall 9'.
  • the direction of pull of a knife to be sharpened runs from the housing wall 9 to 9 '.
  • the disc shape corresponds to that of a flat cylinder, the transition between the peripheral surface and the two cover surfaces being sharp.
  • the slots 8, 8 ' are dimensioned in depth so that their apex 15, 15' lies below a straight line which is formed by the two gussets 13, 13 'of the disk pairs 3, 3', 4, 4 '. This ensures that a line that passes through the apex 15 and the gusset 13 of the pair of discs 4, 4 'runs above the gusset 13' of the pair of discs 3, 3 'and a line that passes through the apex 15' and the gusset 13 'of the pair of discs 3, 3' goes above the gusset 13 of the pair of discs 4, 4 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Image Processing (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP90118787A 1989-12-05 1990-10-01 Dispositif d'affûtage de couteaux ou objets similaires Expired - Lifetime EP0431273B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90118787T ATE99209T1 (de) 1989-12-05 1990-10-01 Vorrichtung zum schaerfen von messern oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8914318U 1989-12-05
DE8914318U DE8914318U1 (de) 1989-12-05 1989-12-05 Vorrichtung zum Schärfen von Messern o.dgl.

Publications (3)

Publication Number Publication Date
EP0431273A2 true EP0431273A2 (fr) 1991-06-12
EP0431273A3 EP0431273A3 (en) 1991-11-27
EP0431273B1 EP0431273B1 (fr) 1993-12-29

Family

ID=6845187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118787A Expired - Lifetime EP0431273B1 (fr) 1989-12-05 1990-10-01 Dispositif d'affûtage de couteaux ou objets similaires

Country Status (4)

Country Link
EP (1) EP0431273B1 (fr)
AT (1) ATE99209T1 (fr)
DE (2) DE8914318U1 (fr)
ES (1) ES2022089T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0951964A1 (fr) * 1998-04-21 1999-10-27 Weschenfelder, Heinz Appareil d'affutage pour outils tranchants comme couteaux, ciseaux ou similaires
CN102975134A (zh) * 2012-11-07 2013-03-20 黄天双 一种手工磨刀工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700599C1 (de) * 1997-01-10 1998-04-16 Gerd Wehrmann Messerschärfer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7342562U (de) * 1974-05-22 Oster E Vorrichtung zum Schärfen von Schneiden an Messerklingen
GB771335A (en) * 1955-01-14 1957-03-27 John Watts Sheffield And Londo Improvements in or relating to knife-sharpeners
DE8812376U1 (de) * 1988-09-30 1988-11-10 Oscar Flügel & Sohn, 5650 Solingen Messerschärfer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0951964A1 (fr) * 1998-04-21 1999-10-27 Weschenfelder, Heinz Appareil d'affutage pour outils tranchants comme couteaux, ciseaux ou similaires
CN102975134A (zh) * 2012-11-07 2013-03-20 黄天双 一种手工磨刀工艺

Also Published As

Publication number Publication date
EP0431273A3 (en) 1991-11-27
ES2022089T3 (es) 1994-03-01
EP0431273B1 (fr) 1993-12-29
ES2022089A4 (es) 1991-12-01
DE59004031D1 (de) 1994-02-10
ATE99209T1 (de) 1994-01-15
DE8914318U1 (de) 1990-08-09

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