EP1260318B1 - Vorrichtung zum Polieren der Schneiden von Schneidwerkzeugen - Google Patents

Vorrichtung zum Polieren der Schneiden von Schneidwerkzeugen Download PDF

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Publication number
EP1260318B1
EP1260318B1 EP02291238A EP02291238A EP1260318B1 EP 1260318 B1 EP1260318 B1 EP 1260318B1 EP 02291238 A EP02291238 A EP 02291238A EP 02291238 A EP02291238 A EP 02291238A EP 1260318 B1 EP1260318 B1 EP 1260318B1
Authority
EP
European Patent Office
Prior art keywords
sharpening
plate
blades
pins
opening
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
EP02291238A
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English (en)
French (fr)
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EP1260318A1 (de
Inventor
Jean-Pierre Bodard
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.)
Bobet Materiel
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Bobet Materiel
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Filing date
Publication date
Application filed by Bobet Materiel filed Critical Bobet Materiel
Publication of EP1260318A1 publication Critical patent/EP1260318A1/de
Application granted granted Critical
Publication of EP1260318B1 publication Critical patent/EP1260318B1/de
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

Definitions

  • the present invention relates to tooling for sharpening the blades of sharp or sharp tools, and in particular the blades of knives.
  • Sharp cutting blades require regular maintenance to maintain cutting power. This maintenance consists of regular grinding operations during which the cutting is reformed by means of a wheel or a suitable machine; between two sharpening operations, the wear of the cutting edge is delayed by sharpening operations by means of a tool called a "rifle", by means of a diabolo sharpener, or by means of a module of sharpening with crossed pins (fixed or articulated).
  • the type of sharpening rifle used is a function of the degree of wear of the blade. Often the operator uses a "rough" shotgun to rough out the work, before using a “smooth” finishing gun to burn the blade wire. But the implementation of these sharpening rifles requires significant technical expertise and an experienced hand; as a result they can not be used effectively by anyone.
  • Diabolo-type and fixed-pin type edgers are relatively inefficient and do not provide an interesting sharpening quality.
  • the sharpening machines of the articulated cross-pin type are generally used to brown the tool blades and have the advantage of being able to be used satisfactorily even by people who do not have a great deal of experience or a high degree of technicality. in the field of sharpening.
  • An apparatus of this type described in US-A-5 478 272, consists of a planar base in which is arranged a vertical slot for the passage of the blade to sharpen, and provided with two sharpening pins which intersect opposite the said slot.
  • the two sharpening spindles made of steel wire, have a generally curved shape and they are articulated at their upper end on the flat base, by means of rotary knobs associated with return springs.
  • the present invention provides a sharpening apparatus of the type just described, that is to say the articulated cross pin type, but simplified structure, so easier maintenance and cost less expensive.
  • Another object of the present invention is to improve the guidance of the tool blade to perfect the sharpening quality.
  • Yet another object of the invention is to propose, in addition to the two articulated sharpening pins serving as a burnisher, a complementary device capable of providing more advanced straightening operations for the wire of the tool blade (more advanced operations which are similar to those filled by conventional "rough" rifles).
  • the apparatus according to the present invention for sharpening the blades of cutting tools, is thus of the type comprising a plate provided with an opening allowing the passage of the tool blade, opposite which opening are arranged two structures of elongated pinning machine which intersect, which sharpening pins are articulated at one of their ends on said plate, each on one side of said opening, and comprise elastic return means, so as to to obtain a vee of mobile sharpening under the pressure of the blade to be sharpened.
  • each sharpening spindle consists of a U-shaped rod comprising two parallel or substantially parallel arms.
  • hinge pins which are housed free of rotation in offset mounting holes, arranged on said plate or on a suitable support integral with said plate, so as to obtain an elastic return of said sharpening pins by a torsion effect.
  • the two sharpening pins have a generally curved shape constantly making an angle of about 40 ° between them.
  • the plate of the apparatus is provided with a vertical opening, the two sharpening pins being articulated in the upper part of the support plate, on axes perpendicular to the plane of the latter.
  • the two sharpening spindles each comprise angled returns oriented in the opposite direction. At rest, these returns are advantageously off-axis.
  • the returns to the angle of the sharpening pins, which form the hinge pins, can be easily extracted from their receiving holes, so as to make said removable pins in particular to facilitate their replacement or cleaning.
  • the two sharpening pins are nested one inside the other.
  • the sharpening apparatus comprises a guide structure of the tool blade, in the form of two independent flat blades arranged vis-à-vis, fixed at their end. upper on the plate or on a support integral with said plate. These two blades are spaced from each other at the top and they come into contact with each other at their lower end to define a self-locking guide vee, arranged just behind the two sharpening pins .
  • These two guide blades are preferably dihedron to form a first flared Vee in the upper part of the opening of the plate, and a second Vé constricted in its lower part.
  • the guide blades are provided at the bottom with means for straightening the wire of the tool blades.
  • These means are advantageously in the form of two monobloc tabs each taken from one of the guide blades and folded in opposite directions from one another to form a straightening Vee.
  • the plate of the sharpening apparatus comprises a monobloc tab for its removable embedding in a suitable support.
  • the sharpening apparatus illustrated in FIGS. 1 to 5 consists of a metal plate 1 in the median zone of which is arranged an opening 2 which opens upwards.
  • the plate 1 is equipped with two attached structures 3 and 4 constituting supports, on the one hand for a pair of flat blades 6, 8 intended to guide the blade of the tool that the it is desired to sharpen, and secondly for two sharpening pins 10, 12 which intersect just in front of said guide blades 6, 8.
  • the support 3 is illustrated in isolation in FIGS. 6 to 8, and the support 4 in FIGS. 9 to 11; these supports 3 and 4 both have the same general structure, but the support 3 is slightly shorter, so as to allow the nesting of the two sharpening pins 10, 12, as will be seen later.
  • Each support 3, 4 is generally U-shaped comprising a base 14, a rear wing 16 and a front wing 18. They extend perpendicularly to the plane of the plate 1, projecting forwards, fixed by welding their rear wing 16 on said plate 1 along the edges of the opening 2. In FIGS. 7 and 10, the presence of a notch 20 formed in the rear wing 16, which facilitates the correct positioning of the supports 3 and 4 on a complementary recess form cut in the plate 1, before the joining is noted. by welding.
  • the base 14 of the supports 3 and 4 comprises a threaded orifice 22 which allows the removable attachment of the flat blades 6 and 8 by means of a screw 24, 26 ( Figure 4).
  • the two flat blades 6 and 8 are made for example of stainless steel chrome spring; they are arranged facing each other and extend perpendicularly to the plane of the plate 1. These blades 6, 8 each comprise an L-shaped end return 28 which allows their fixing to the supports 3 and 4 by means of the screw 24, 26; from this return to L 28, the two blades 6 and 8 each take the form of a dihedron to form together a first flared Vee 30 in the upper part of the opening 2, followed by a second constricted Vé 32, in the lower part of said opening.
  • the lower edges 34 and 36 of the two blades 6 and 8 come into contact with each other to form a self-locking guide system.
  • the two blades 6 and 8 have offset internal cutouts 38 and 40 (Figure 2) which form monobloc tabs folded in opposite directions to each other to form a Vee 42 for straightening the wire of the tool blade, in a perfect alignment.
  • the angle that form between them the two tabs 38 and 40 is of the order of 40 °.
  • Each monobloc tongue 38, 40 is associated with a lateral opening for embedding the homologous tongue.
  • the two sharpening pins 10 and 12 are made of wire, for example chromed stainless steel spring wire. They consist of a U-shaped rod, comprising two parallel arms 48, 50 integral with one of their ends 52 and whose free ends comprise one-piece square returns 54, 56, shown in dashed lines on FIG. 5, which come to slip into appropriate orifices 58, 60 arranged in the front wing 18 of the supports 3 and 4. This embedding of the returns 54 and 56 in the orifices 58 and 60 allows the articulation of the pins 10 and 12 on their respective support 3, 4, about axes perpendicular to the support plate 1.
  • the orifices 58 and 60 extend perpendicular to the plane of the plate 1 and they pass right through the front wing 18 of the supports 3 and 4.
  • the two orifices 58 and 60 are offset to obtain an elastic return system of the pins 10 and 12 by a twisting effect of the two parallel arms 48 and 50.
  • the positioning of the returns 54, 56, and that of the two orifices 58 , 60 is adapted to obtain the desired elastic return characteristics.
  • the two arms 48 and 50 of the pins 10 and 12 are parallel, and one of these arms has a slightly longer length than the other to offset the two returns 54 and 56 to allow their embedding in the orifices 58, 60.
  • returns 54, 56 are oriented in the opposite direction to each other so that the two parallel arms 48, 50 of the pins 10, 12 are positioned on either side of the front wings 18 of the supports 3 and 4, which positioning being possible due to the elasticity of the end link 52 of said pins.
  • the returns 54 and 56 are simply fitted into the orifices 58 and 60, free from rotation and removable.
  • the two sharpening spindles 10 and 12 are mounted nested one inside the other as illustrated in Figures 1, 3 and 5 to optimize the sharpening operations, and also to limit the size of the device . This nesting is here achieved thanks to a slight difference in length of the supports 3 and 4.
  • abutment structures 62 arranged on the sides of the plate 1.
  • These stops 62 can be made in one piece, by folding the lateral parts of platinum 1; they may also consist of independent elements, reported and fixed by any appropriate means.
  • a small cutout 64 ( Figures 1 and 4) structured to form a control gauge allowing the operator to check the wear of the tip of his knife.
  • the support plate 1 has a generally triangular shape; it may include internal openings 66 on either side of the opening opening 2, which allow to lighten its weight.
  • the plate 1 is provided with a one-piece lug 68 which allows the removable embedding of the sharpening apparatus in a suitable support, fixed on the workstation. The apparatus can thus very easily be removed from its support, in particular for cleaning or disinfection.
  • An internal cutout 70 arranged in the one-piece lug 68 further reduces the weight of the apparatus.
  • the operator places the tool blade 72 it wants to sharpen between the two blades 6 and 8 which form a self-locking guide. If he wishes to use the straightening vee 42 formed by the two one-piece tongues 38 and 40, he exerts a vertical pressure on the tool, sufficient for his blade to reach said vee 42 by removing the two pins 10, 12; the operator can then perform the back and forth movements adapted to "work" the wire of the tool blade, in a manner similar or related to conventional work by a "rough” shotgun. The tool blade is then guided by the self-locking Vee 32 of the guide blades 6, 8 which ensures a perfect working angle.
  • the two sharpening spindles 10 and 12 are then used to finish the sharpening operation, that is, to "brown” or smooth the tool blade, as can be done in a fashionable manner. classic by means of a “smooth” shotgun.
  • the operator then moves back and forth from the tool blade on the two sharpening spindles 10, 12, exerting a pressure just sufficient not to reach the straightening vee 42.
  • the two sharpening spindles 10 and 12 are similar to mobile torsion bars in the form of arches and they make it possible to keep between them, and whatever the depth of penetration of the tool blade into the constricted V-32 , the right angle of attack to optimize the work on the wire of the blade.
  • the two sharpening pins 10 and 12 intrinsically have their own elastic return means, which simplifies the structure of the apparatus. In addition, these two pins can easily be dismantled and reassembled from their support, in particular for replacement operations following a deterioration, or simply for cleaning.
  • the apparatus according to the present invention has a relatively simple overall structure and is very complete since it proposes two associated assemblies that make it possible to work the wire of the tool blades differently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Knives (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (11)

  1. Vorrichtung zum Schärfen der Klingen von Schneidwerkzeugen, mit einer Platte (1), die mit einer Öffnung (2) versehen ist, welche das Hindurchtreten der Werkzeugklinge ermöglicht, wobei gegenüber der Öffnung (2) zwei Schärfstrukturen (10, 12) in Form dünner, sich kreuzender Bügel ausgebildet sind, wobei jeder der Schärfbügel (10, 12) an einem seiner Enden an der Platte (1) auf einer Seite der Öffnung (2) angelenkt Ist und elastische Rückstelleinrichtungen aufweist, so dass eine unter dem Druck der zu schärfenden Klinge bewegbare V-förmige Schärfeinrichtung gebildet wird, dadurch gekennzeichnet, dass jeder Schärfbügel (10, 12) aus einer U-förmigen Stange mit zwei parallelen oder im wesentlichen parallelen Armen (48, 50) gebildet ist, die an einem ihrer Enden (52) verbunden sind und deren beiden freien Enden Abwinkelungen (54, 56) aufweisen, die Gelenkachsen bilden, die frei drehbar in versetzten Einbauöffnungen (58, 60) aufgenommen sind, welche an der Platte (1) oder an einer geeigneten, mit der Platte (1) fest verbundenen Stütze (3, 4) ausgebildet sind, um eine elastische Rückstellung der Schärfbügel (10, 12) durch einen Torsionseffekt zu erreichen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie zwei Schärfbügel (10, 12) von allgemein gebogener Form aufweist, die zwischen einander stets einen Winkel in der Größenordnung von 40° bilden.
  3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sie eine Platte (1) mit einer vertikalen Öffnung (2) aufweist, wobei die beiden Schärfbügel (10, 12) im oberen Teil der Platte (1) auf zu der Ebene derselben senkrechten Achsen gelenkig angeordnet sind.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Schärfbügel (10, 12) jeweils entgegengesetzt gerichtete Abwinkelungen (54, 56) aufweisen.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Schärfbügel (10, 12) jeweils Abwinkelungen (54, 56) aufweisen, die in Ruhestellung gegeneinander versetzt sind.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie ineinander verschachtelte Schärfbügel (10, 12) aufweist.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie eine Struktur zum Führen der Werkzeugklinge In Form zweier flacher, unabhängiger einander gegenüberliegender Kufen (6, 8) aufweist, die an ihrem oberen Ende an der Platte (1) oder einer fest mit der Platte (1) verbundenen Stütze (3, 4) angebracht und in diesem Bereich voneinander beabstandet sind, und die einander an ihrem unteren Ende (34, 36) berühren, wobei die Kufen (6, 8) unmittelbar hinter den beiden Schärfbügeln (10, 12) eine selbstschließende V-förmige Führung (30, 32) bilden.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass sie diederförmige Führungskufen (6, 8) aufweist, um ein erstes, aufgeweitetes V (30) im oberen Bereich der Öffnung (2) der Platte (1) und ein zweites, enges V (32) im unteren Bereich der Öffnung (2) zu bilden.
  9. Vorrichtung nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass sie Führungskufen (6, 8) aufweist, die im unteren Bereich mit Einrichtungen (42) zum Richten der Schneide der Klinge von Werkzeugen versehen sind.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Einrichtungen zum Richten der Schneide von Werkzeugklingen aus zwei einstückigen Zungen (38, 40) gebildet ist, die jeweils aus einer der Führungskufen (6, 8) ausgenommen und in zueinender entgegengesetzten Richtungen gebogen sind, um eine V-förmige Richteinrichtung (42) zu bilden.
  11. Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass sie eine Platte (1) aufweist, die mit einem einstückigen Ansatz (68) versehen ist, um sie lösbar in einer geeigneten Stütze anzubringen.
EP02291238A 2001-05-18 2002-05-17 Vorrichtung zum Polieren der Schneiden von Schneidwerkzeugen Expired - Lifetime EP1260318B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0106584 2001-05-18
FR0106584A FR2824770B1 (fr) 2001-05-18 2001-05-18 Appareil pour affiler les lames d'outils tranchants

Publications (2)

Publication Number Publication Date
EP1260318A1 EP1260318A1 (de) 2002-11-27
EP1260318B1 true EP1260318B1 (de) 2007-05-30

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ID=8863439

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EP02291238A Expired - Lifetime EP1260318B1 (de) 2001-05-18 2002-05-17 Vorrichtung zum Polieren der Schneiden von Schneidwerkzeugen

Country Status (7)

Country Link
US (1) US6769326B2 (de)
EP (1) EP1260318B1 (de)
AT (1) ATE363362T1 (de)
AU (1) AU783875B2 (de)
DE (1) DE60220336T2 (de)
ES (1) ES2284795T3 (de)
FR (1) FR2824770B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011051400U1 (de) 2011-09-22 2011-11-02 Friedr. Dick Gmbh & Co. Kg Schärfvorrichtung
DE102011083177A1 (de) 2011-09-22 2013-03-28 Friedr. Dick Gmbh & Co. Kg Schärfvorrichtung

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070101826A1 (en) * 2002-11-12 2007-05-10 Southern Mechanical & Structural, Inc. Knife sharpener
JP3925658B2 (ja) * 2004-10-04 2007-06-06 吉田金属工業株式会社 刃物研磨装置
DE102006041538B3 (de) * 2006-09-05 2008-01-10 Friedr. Dick Gmbh & Co. Kg Schärfvorrichtung für Messerklingen
FR2974748B1 (fr) * 2011-05-06 2014-05-16 Bobet Materiel Perfectionnement aux appareils pour affiler les lames d'outils tranchants
USD884451S1 (en) * 2019-09-19 2020-05-19 ChaoWu Li Portable metal knife sharpener
WO2022015412A1 (en) * 2020-07-17 2022-01-20 Primedge, Inc. Blade sharpener
CN112296894B (zh) * 2020-11-02 2021-10-08 王利君 一种雕刻刀磨刀器

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Publication number Priority date Publication date Assignee Title
US1041631A (en) * 1912-01-25 1912-10-15 Leo C Johnson Device for sharpening knives.
GB191266A (en) * 1921-12-17 1923-01-11 Hubert Haywood A knife sharpener, for sharpening table knives, carving knives and the like
GB293785A (en) * 1927-07-12 1928-09-06 Paul Von Der Lippen Knife sharpener
US1894579A (en) * 1928-01-12 1933-01-17 Blankner William Knife sharpener
US2124646A (en) * 1935-02-11 1938-07-26 Ind A G Allegro Knife sharpening device
GB517242A (en) * 1938-08-20 1940-01-24 James Chantry Improvements in knife sharpeners
GB8301312D0 (en) * 1983-01-18 1983-02-16 Archant Ltd Knife sharpener
US4934110A (en) * 1985-04-22 1990-06-19 John Juranitch Edge sharpening apparatus
US5040435A (en) * 1991-01-31 1991-08-20 General Housewares Corp. Knife edge deburring apparatus
US5655959A (en) * 1993-08-20 1997-08-12 Juranitch; John Knife edge sharpener
US5478272A (en) * 1994-07-07 1995-12-26 Cozzini, Inc. Blade sharpening apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011051400U1 (de) 2011-09-22 2011-11-02 Friedr. Dick Gmbh & Co. Kg Schärfvorrichtung
DE102011083177A1 (de) 2011-09-22 2013-03-28 Friedr. Dick Gmbh & Co. Kg Schärfvorrichtung
WO2013041450A1 (de) 2011-09-22 2013-03-28 Friedr. Dick Gmbh & Co. Kg Schärfvorrichtung

Also Published As

Publication number Publication date
EP1260318A1 (de) 2002-11-27
US20030049998A1 (en) 2003-03-13
AU4238002A (en) 2002-11-21
DE60220336D1 (de) 2007-07-12
FR2824770A1 (fr) 2002-11-22
AU783875B2 (en) 2005-12-15
FR2824770B1 (fr) 2003-10-03
ATE363362T1 (de) 2007-06-15
DE60220336T2 (de) 2008-02-28
ES2284795T3 (es) 2007-11-16
US6769326B2 (en) 2004-08-03

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