EP1260318B1 - Apparatus for polishing blades of cutting tools - Google Patents
Apparatus for polishing blades of cutting tools Download PDFInfo
- 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
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- EP
- European Patent Office
- Prior art keywords
- sharpening
- plate
- blades
- pins
- opening
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- 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.)
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- 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.
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- 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)
Abstract
Description
La présente invention concerne un outillage pour affiler les lames d'outils tranchants ou coupants, et en particulier les lames de couteaux.The present invention relates to tooling for sharpening the blades of sharp or sharp tools, and in particular the blades of knives.
Les lames d'outils tranchants nécessitent un entretien régulier pour conserver leur pouvoir de coupe.
Cet entretien consiste en des opérations régulières d'affûtage au cours desquelles on reforme le taillant au moyen d'une meule ou d'une machine adaptée ; entre deux opérations d'affûtage, l'usure du taillant est retardée par des opérations d'affilage au moyen d'un outil appelé « fusil », au moyen d'un affileur à diabolo, ou encore au moyen d'un module d'affilage à broches croisées (fixes ou articulées).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).
Le type de fusil d'affilage utilisé est fonction du degré d'usure de la lame. Bien souvent l'opérateur se sert d'un fusil « rugueux » pour dégrossir le travail, avant d'utiliser un fusil de finition « lisse » servant de brunissoir pour le fil de la lame.
Mais la mise en oeuvre de ces fusils d'affilage nécessite une technicité importante et un coup de main expérimenté ; en conséquence ils ne peuvent pas être utilisés efficacement par n'importe qui.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.
Les affileurs du type à diabolo et ceux du type à broches fixes sont relativement inefficaces et ne permettent pas d'obtenir une qualité d'affilage intéressante.Diabolo-type and fixed-pin type edgers are relatively inefficient and do not provide an interesting sharpening quality.
Les modules d'affilage du type à broches croisées articulées servent généralement à brunir les lames d'outils et présentent l'intérêt de pouvoir être utilisés de manière satisfaisante même par des personnes ne disposant pas d'une grande expérience ou d'une grande technicité dans le domaine de l'aiguisage.
Un appareil de ce genre, décrit dans le document US-A-5 478 272, est constitué d'une base plane dans laquelle est aménagée une fente verticale destinée au passage de la lame à aiguiser, et munie de deux broches d'affilage qui se croisent en regard de ladite fente. Les deux broches d'affilage, réalisées en fil d'acier, ont une forme générale courbe et elles sont articulées au niveau de leur extrémité supérieure sur la base plane, par l'intermédiaire de boutons rotatifs associés à des ressorts de rappel. Ces broches forment entre elles un Vé d'affilage qui est mobile sous la pression de la lame d'outil que l'on désire aiguiser ; le Vé mobile correspondant permet d'assurer une pression de traitement régulière ou relativement régulière sur la lame d'outil.
Des butoirs inférieurs et supérieurs limitent le pivotement desdites broches entre une position haute et une position basse.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. These pins form between them Vee sharpening which is mobile under the pressure of the blade of the tool that one wishes to sharpen; the corresponding Vee mobile ensures a regular or relatively regular treatment pressure on the tool blade.
Lower and upper stops limit the pivoting of said pins between a high position and a low position.
La structure de ce type d'appareil est cependant relativement complexe, en particulier du fait de la présence des ressorts de rappel intégrés dans les boutons rotatifs. En outre, ces ressorts fatiguent assez rapidement et il est nécessaire de les remplacer régulièrement, ce qui n'est pas toujours très facile à réaliser, et ce qui entraîne des coûts de pièces et de main d'oeuvre conséquents.The structure of this type of device is however relatively complex, in particular because of the presence of the return springs integrated in the rotary knobs. In addition, these springs tire fairly quickly and it is necessary to replace them regularly, which is not always very easy to achieve, and resulting in significant costs of parts and labor.
La présente invention propose un appareil d'affilage du genre de celui qui vient d'être décrit, c'est-à-dire du type à broches croisées articulées, mais de structure simplifiée, donc d'entretien plus aisé et de coût de revient moins onéreux.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.
Un autre objectif de la présente invention est d'améliorer le guidage de la lame d'outil pour parfaire la qualité d'affilage.Another object of the present invention is to improve the guidance of the tool blade to perfect the sharpening quality.
Encore un autre but de l'invention est de proposer, en complément des deux broches d'affilage articulées servant de brunissoir, un dispositif complémentaire apte à assurer des opérations plus poussées de redressage du fil de la lame d'outil (opérations plus poussées qui s'apparentent à celles remplies par les fusils « rugueux » classiques).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).
L'appareil conforme à la présente invention, pour affiler les lames d'outils tranchants, est donc du type comprenant une platine munie d'une ouverture permettant le passage de la lame d'outil, en regard de laquelle ouverture sont aménagées deux structures d'affilage en forme de broches allongées qui se croisent, lesquelles broches d'affilage sont articulées au niveau de l'une de leurs extrémités sur ladite platine, chacune d'un côté de ladite ouverture, et comportent des moyens de rappel élastiques, de manière à obtenir un Vé d'affilage mobile sous la pression de la lame à affiler.
Conformément à la présente invention, chaque broche d'affilage est constituée d'une tige conformée en U comprenant deux bras parallèles ou sensiblement parallèles reliés au niveau de l'une de leurs extrémités et dont les deux extrémités libres comportent des retours à l'équerre, formant des axes d'articulation qui viennent se loger libres de rotation dans des orifices d'encastrement désaxés, aménagés sur ladite platine ou sur un support approprié solidaire de ladite platine, de manière à obtenir un rappel élastique desdites broches d'affilage par un effet de torsion.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.
According to the present invention, each sharpening spindle consists of a U-shaped rod comprising two parallel or substantially parallel arms. parallel connected at one of their ends and whose two free ends comprise returns to the square, forming 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.
Toujours selon l'invention, les deux broches d'affilage ont une forme générale courbe faisant en permanence entre elles un angle de l'ordre de 40°.Still according to the invention, the two sharpening pins have a generally curved shape constantly making an angle of about 40 ° between them.
Toujours selon l'invention, la platine de l'appareil est munie d'une ouverture verticale, les deux broches d'affilage étant articulées dans la partie supérieure de la platine support, sur des axes perpendiculaires au plan de cette dernière.Still according to the invention, 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.
Selon une forme de réalisation préférée, les deux broches d'affilage comportent chacune des retours à l'équerre orientés en sens inverse. Au repos, ces retours sont avantageusement désaxés.According to a preferred embodiment, the two sharpening spindles each comprise angled returns oriented in the opposite direction. At rest, these returns are advantageously off-axis.
Les retours à l'équerre des broches d'affilage, qui forment les axes d'articulation, peuvent être facilement extraits de leurs orifices de réception, de manière à rendre lesdites broches amovibles en vue notamment de faciliter leur remplacement ou leur nettoyage.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.
Selon une autre particularité intéressante, les deux broches d'affilage sont imbriquées l'une dans l'autre.According to another interesting feature, the two sharpening pins are nested one inside the other.
Selon encore une autre particularité, l'appareil d'affilage conforme à la présente invention comporte une structure de guidage de la lame d'outil, en forme de deux lames plates indépendantes disposées en vis-à-vis, fixées au niveau de leur extrémité supérieure sur la platine ou sur un support solidaire de ladite platine. Ces deux lames sont écartées l'une de l'autre en partie supérieure et elles viennent en contact l'une avec l'autre au niveau de leur extrémité inférieure pour définir un Vé de guidage autoserrant, disposé juste derrière les deux broches d'affilage.
Ces deux lames de guidage sont de préférence en dièdre pour former un premier Vé évasé dans la partie supérieure de l'ouverture de la platine, et un second Vé resserré, dans sa partie inférieure.According to yet another particularity, the sharpening apparatus according to the present invention 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.
Selon encore une autre caractéristique, les lames de guidage sont munies, en partie inférieure, de moyens pour redresser le fil des lames d'outils. Ces moyens se présentent avantageusement sous la forme de deux languettes monobloc prélevées chacune dans l'une des lames de guidage et pliées en sens inverse l'une de l'autre pour former un Vé de redressage.According to yet another characteristic, 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.
Selon une autre particularité, la platine de l'appareil d'affilage comporte une patte monobloc permettant son encastrement amovible dans un support approprié.According to another feature, the plate of the sharpening apparatus comprises a monobloc tab for its removable embedding in a suitable support.
Mais l'invention sera encore illustrée, sans être aucunement limitée, par la description suivante d'un mode de réalisation particulier, donné uniquement à titre d'exemple et représenté sur les dessins annexés dans lesquels :
- la figure 1 est une vue en perspective d'un appareil d'affilage conforme à la présente invention ;
- la figure 2 est une vue agrandie, en perspective, du Vé de redressage aménagé au niveau de l'extrémité inférieure des lames de guidage ;
- la figure 3 est une vue agrandie, en perspective, des deux broches d'affilage montées sur leur support ;
- la figure 4 est une vue de face de l'appareil illustré sur la figure 1 ;
- la figure 5 est une vue en coupe selon 5-5 de la figure 4 ;
- la figure 6 est une vue de dessus de l'un des éléments supports d'une broche d'affilage, représenté isolément ;
- la figure 7 est une vue en coupe selon 7-7 de la figure 6 ;
- la figure 8 est une vue en coupe selon 8-8 de la figure 7 ;
- la figure 9 est une vue de dessus de l'autre élément support de broche d'affilage, représenté isolément ;
- la figure 10 est une vue en coupe selon 10-10 de la figure 9 ;
- la figure 11 est une vue en coupe selon 11-11 de la figure 10 ;
- la figure 12 est une vue de face de l'appareil d'affilage illustré sur la figure 1, avec une lame de couteau positionnée entre les lames de guidage.
- Figure 1 is a perspective view of a sharpening apparatus according to the present invention;
- Figure 2 is an enlarged view, in perspective, of the straightening Vé arranged at the lower end of the guide blades;
- Figure 3 is an enlarged view, in perspective, of the two sharpening spindles mounted on their support;
- Figure 4 is a front view of the apparatus shown in Figure 1;
- Figure 5 is a sectional view along 5-5 of Figure 4;
- Figure 6 is a top view of one of the support elements of a sharpening spindle, shown in isolation;
- Figure 7 is a sectional view along 7-7 of Figure 6;
- Figure 8 is a sectional view along 8-8 of Figure 7;
- Figure 9 is a top view of the other sharpening spindle support member, shown in isolation;
- Figure 10 is a sectional view along 10-10 of Figure 9;
- Figure 11 is a sectional view along 11-11 of Figure 10;
- Figure 12 is a front view of the sharpening apparatus illustrated in Figure 1, with a knife blade positioned between the guide blades.
L'appareil d'affilage illustré sur les figures 1 à 5 est constitué d'une platine en métal 1 dans la zone médiane de laquelle est aménagée une ouverture 2 qui débouche vers le haut.The sharpening apparatus illustrated in FIGS. 1 to 5 consists of a
Dans la partie supérieure de cette ouverture 2, la platine 1 est équipée de deux structures rapportées 3 et 4 constituant des supports, d'une part pour un couple de lames plates 6, 8 destinées à guider la lame de l'outil que l'on désire affiler, et d'autre part pour deux broches d'affilage 10, 12 qui se croisent juste devant lesdites lames de guidage 6, 8.In the upper part of this
Le support 3 est illustré isolément sur les figures 6 à 8, et le support 4 sur les figures 9 à 11 ; ces supports 3 et 4 ont tous les deux la même structure générale, mais le support 3 est légèrement plus court, de manière à permettre l'imbrication des deux broches d'affilage 10, 12, comme on le verra plus loin.
Chaque support 3, 4 est en forme générale de U comprenant une embase 14, une aile arrière 16 et une aile avant 18. Ils s'étendent perpendiculairement au plan de la platine 1, en saillie vers l'avant, fixés par soudage de leur aile arrière 16 sur ladite platine 1 le long des bordures de l'ouverture 2.
Sur les figures 7 et 10, on remarque la présence d'une échancrure 20 aménagée dans l'aile arrière 16, qui facilite le positionnement correct des supports 3 et 4 sur une forme complémentaire d'encastrement découpée dans la platine 1, avant la solidarisation par soudage.
L'embase 14 des supports 3 et 4 comporte un orifice taraudé 22 qui permet la fixation amovible des lames plates 6 et 8 au moyen d'une vis 24, 26 (figure 4).The
Each
In FIGS. 7 and 10, the presence of a
The
Les deux lames plates 6 et 8 sont réalisées par exemple en inox ressort chromé ; elles sont disposées en vis-à-vis et elles s'étendent perpendiculairement au plan de la platine 1. Ces lames 6, 8 comportent chacune un retour d'extrémité en L 28 qui permet leur fixation sur les supports 3 et 4 au moyen des vis 24, 26 ; à partir de ce retour en L 28, les deux lames 6 et 8 prennent chacune la forme d'un dièdre pour constituer ensemble un premier Vé évasé 30 dans la partie supérieure de l'ouverture 2, suivi d'un second Vé resserré 32, dans la partie inférieure de ladite ouverture.
Les bordures inférieures 34 et 36 des deux lames 6 et 8 viennent en contact l'une avec l'autre pour former un système de guidage autoserrant.The two
The lower edges 34 and 36 of the two
Juste au-dessus de leur bordure inférieure 34 et 36, les deux lames 6 et 8 comportent des découpes internes décalées 38 et 40 (figure 2) qui forment des languettes monobloc pliées en sens inverse l'une de l'autre pour constituer un Vé 42 permettant le redressage du fil de la lame d'outil, dans un alignement parfait.
L'angle que forment entre elles les deux languettes 38 et 40 est de l'ordre de 40°.
Chaque languette monobloc 38, 40 est associée à une ouverture latérale permettant l'encastrement de la languette homologue.Just above their
The angle that form between them the two
Each
Les deux broches d'affilage 10 et 12 sont réalisées en fil métallique, par exemple en fil d'inox ressort chromé. Elles sont constituées d'une tige conformée en U, comportant deux bras parallèles 48, 50, solidaires à l'une de leurs extrémités 52 et dont les extrémités libres comportent des retours monobloc à l'équerre 54, 56, illustrés en pointillés sur la figure 5, qui viennent s'emmancher dans des orifices appropriés 58, 60 aménagés dans l'aile avant 18 des supports 3 et 4.
Cet encastrement des retours 54 et 56 dans les orifices 58 et 60 autorise l'articulation des broches 10 et 12 sur leur support respectif 3, 4, autour d'axes perpendiculaires à la platine support 1.The two sharpening
This embedding of the returns 54 and 56 in the
Les orifices 58 et 60 s'étendent perpendiculairement au plan de la platine 1 et ils traversent de part en part l'aile avant 18 des supports 3 et 4.The
Les deux orifices 58 et 60 sont désaxés pour obtenir un système de rappel élastique des broches 10 et 12 par un effet de torsion des deux bras parallèles 48 et 50. Le positionnement des retours 54, 56, et celui des deux orifices d'accueil 58, 60 est adapté pour obtenir les caractéristiques de rappel élastiques désirées.
Au repos, les deux bras 48 et 50 des broches 10 et 12 sont parallèles, et l'un de ces bras a une longueur un peu plus importante que l'autre pour désaxer les deux retours 54 et 56 afin de permettre leur encastrement dans les orifices 58, 60.
Ces retours 54, 56 sont orientés en sens inverse l'un de l'autre pour que les deux bras parallèles 48, 50 des broches 10, 12 se positionnent de part et d'autre des ailes avant 18 des supports 3 et 4, ce positionnement étant possible grâce à l'élasticité de la liaison d'extrémité 52 desdites broches. Les retours 54 et 56 sont simplement emmanchés dans les orifices 58 et 60, libres de rotation et amovibles.The two
At rest, the two
These returns 54, 56 are oriented in the opposite direction to each other so that the two
Les deux broches d'affilage 10 et 12 sont montées imbriquées l'une dans l'autre de la manière illustrée sur les figures 1, 3 et 5 pour optimiser les opérations d'affilage, et aussi pour limiter l'encombrement de l'appareil. Cette imbrication est ici réalisée grâce à une légère différence de longueur des supports 3 et 4.The two sharpening
Sur les figures 1, 3 et 5, on remarque la forme générale courbe des deux broches 10 et 12, qui permet de conserver entre elles un angle de l'ordre de 40°, quelle que soit la profondeur de pénétration de la lame d'outil.In FIGS. 1, 3 and 5, the general curved shape of the two
Au repos, les deux broches d'affilage 10 et 12 sont en position haute, leur extrémité étant bloquée par des structures de butées 62 aménagées sur les côtés de la platine 1. Ces butées 62 peuvent être réalisées monobloc, par pliage des parties latérales de la platine 1 ; elles peuvent aussi être constituées d'éléments indépendants, rapportés et fixés par tout moyen approprié.
Aux extrémités des butées 62, on remarque la présence d'une petite découpe 64 (figures 1 et 4) structurée pour former une jauge de contrôle permettant à l'opérateur de vérifier l'usure de la pointe de son couteau.At rest, the two sharpening
At the ends of the
Au repos, on remarque que les deux broches d'affilage 10 et 12 se croisent juste en dessous du niveau de transition entre le Vé évasé 30 et le Vé resserré 32 des lames de guidage 6 et 8.At rest, it is noted that the two sharpening
La platine support 1 a une forme générale triangulaire ; elle peut comporter des ouvertures internes 66 de part et d'autre de l'ouverture débouchante 2, qui permettent d'alléger son poids.
En partie inférieure, la platine 1 est munie d'une patte monobloc 68 qui permet l'encastrement amovible de l'appareil d'affilage dans un support approprié, fixé sur le poste de travail. L'appareil peut ainsi très facilement être enlevé de son support, en particulier en vue de son nettoyage ou désinfection.
Une découpe interne 70 aménagée dans la patte monobloc 68 permet encore d'alléger le poids de l'appareil.The
In the lower part, the
An
Comme cela apparaît sur la figure 12, une fois l'appareil positionné verticalement sur son support (non représenté), l'opérateur place la lame d'outil 72 qu'il désire affiler entre les deux lames 6 et 8 qui forment un guidage autoserrant.
S'il désire utiliser le Vé de redressage 42 formé par les deux languettes monobloc 38 et 40, il exerce une pression verticale sur l'outil, suffisante pour que sa lame atteigne ledit Vé 42 en écartant les deux broches 10, 12 ; l'opérateur peut alors exercer les mouvements de va-et-vient adaptés pour « travailler » le fil de la lame d'outil, d'une manière similaire ou apparentée au travail classique par un fusil « rugueux ».
La lame d'outil est alors guidée par le Vé autoserrant 32 des lames de guidage 6, 8 qui assure un angle de travail parfait.As shown in FIG. 12, once the apparatus is positioned vertically on its support (not shown), the operator places the
If he wishes to use the straightening
The tool blade is then guided by the self-locking
Les deux broches d'affilage 10 et 12 sont ensuite utilisées pour assurer la finition de l'opération d'affilage, c'est-à-dire pour « brunir » ou lisser la lame d'outil, comme on peut le faire de manière classique au moyen d'un fusil « lisse ».
L'opérateur effectue alors des mouvements de va-et-vient de la lame d'outil sur les deux broches d'affilage 10, 12, en exerçant une pression juste suffisante pour ne pas atteindre le Vé de redressage 42.
Les deux broches d'affilage 10 et 12 s'apparentent à des barres de torsion mobiles en forme d'arcs et elles permettent de conserver entre elles, et quelle que soit la profondeur de pénétration de la lame d'outil dans le Vé resserré 32, le bon angle d'attaque permettant d'optimiser le travail sur le fil de la lame.The two sharpening
The operator then moves back and forth from the tool blade on the two sharpening
The two sharpening
Le mouvement vers le bas de la lame d'outil est limité par la présence du Vé de redressage 42 et il n'est donc pas nécessaire de prévoir des structures de butées basses pour les deux broches d'affilage 10 et 12. En tout état de cause, les deux broches 10 et 12, imbriquées l'une dans l'autre, ne peuvent pas s'écarter l'une de l'autre en partie inférieure.The downward movement of the tool blade is limited by the presence of the straightening
Les deux broches d'affilage 10 et 12 comportent intrinsèquement leurs propres moyens de rappel élastiques, ce qui simplifie la structure de l'appareil. En outre, ces deux broches peuvent très facilement être démontées et remontées de leur support, en particulier pour les opérations de remplacement suite à une détérioration, ou simplement pour leur nettoyage.The two sharpening
L'appareil conforme à la présente invention a une structure générale relativement simple et il est très complet puisqu'il propose deux ensembles associés qui permettent de travailler différemment le fil des lames d'outils.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.
Le mode de réalisation qui vient d'être décrit est intégralement réalisé en métal. Bien entendu certaines parties, et notamment la platine 1 ainsi que les structures supports rapportées 3 et 4 pourraient être obtenues en matière plastique moulée ; dans ce dernier cas, la fixation des structures supports 3 et 4 sur la platine en matière plastique peut être obtenue au moyen de vis adaptées.The embodiment which has just been described is entirely made of metal. Of course some parts, and in particular the
Claims (11)
- A device to sharpen the blades of sharp tools, comprising a plate (1) fitted with an opening (2) letting through the tool blade, opposite which opening (2) are provided two sharpening structures (10, 12) in the form of oblong pins crossing each other, which sharpening pins (10, 12) are hinged at one of their ends on said plate (1), each on one side of said opening (2), and comprise elastic return means, in order to obtain a sharpening V mobile under the pressure of the blade to be sharpened, characterised in that each sharpening pin (10, 12) comprises of a U-shaped rod comprising two parallel or substantially parallel arms (48, 50) connected at one of their ends (52) and whereof both free ends comprise square junctions (54, 56), forming hinged axes which are recessed, free to rotate in offset engagement orifices (58, 60), provided on said plate (1) or on an appropriate support (3, 4) integral with said plate (1), in order to obtain an elastic return of said sharpening pins (10, 12) by a twisting effect.
- A device according to claim 1, characterised in that it comprises two sharpening pins (10, 12) generally of curved shape forming permanently between themselves an angle in the order of 40°.
- A device according to any one of claims 1 or 2, characterised in that it comprises a plate (1) fitted with a vertical opening (2), both sharpening pins (10, 12) being hinged in the upper section of said plate (1), on axes perpendicular to the plane of this latter.
- A device according to any one of claims 1 to 3, characterised in that the sharpening pins (10, 12) comprise each square junctions (54, 56) oriented in reverse direction.
- A device according to any one of claims 1 to 4, characterised in that the sharpening pins (10, 12) comprise each junctions (54, 56) that are offset in home position.
- A device according to any one of claims 1 to 5, characterised in that it comprises two sharpening pins (10, 12) engaged into one another.
- A device according to any one of claims 1 to 6, characterised in that it comprises a guiding structure of the tool blade, in the form of two independent blades plates (6, 8) laid out opposite to one another, fixed at their upper end on the plate (1), or on a support (3, 4) integral with said plate (1), spaced apart from one another at that level, and which contact one another at their lower end (34, 36), said blades (6, 8) delineating a self-clamping guiding V (30, 32) just behind both sharpening pins (10, 12).
- A device according to claim 7, characterised in that it comprises guiding blades (6, 8) laid out as a dihedral to form a first flared V (30) in the upper section of the opening (2) of the plate (1), and a second narrow V (32), in the lower section of said opening (2).
- A device according to any one of claims 7 or 8, characterised in that it comprises guiding blades (6, 8), fitted, in its lower section, with means (42) to grind the edge of the tool blades.
- A device according to claim 9, characterised in that the means to grind the edge of the tool blades comprise two single piece tabs (38, 40) each withdrawn from one of the guiding blades (6, 8) and folded in reverse direction with respect to one another to form a grinding V (42).
- A device according to any one of claims 1 to 10, characterised in that it comprises a plate (1) fitted with a single piece tab (68) enabling its removable engagement in an appropriate support.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0106584A FR2824770B1 (en) | 2001-05-18 | 2001-05-18 | APPARATUS FOR SHARPENING BLADES OF SHARP TOOLS |
FR0106584 | 2001-05-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1260318A1 EP1260318A1 (en) | 2002-11-27 |
EP1260318B1 true EP1260318B1 (en) | 2007-05-30 |
Family
ID=8863439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02291238A Expired - Lifetime EP1260318B1 (en) | 2001-05-18 | 2002-05-17 | Apparatus for polishing blades of cutting tools |
Country Status (7)
Country | Link |
---|---|
US (1) | US6769326B2 (en) |
EP (1) | EP1260318B1 (en) |
AT (1) | ATE363362T1 (en) |
AU (1) | AU783875B2 (en) |
DE (1) | DE60220336T2 (en) |
ES (1) | ES2284795T3 (en) |
FR (1) | FR2824770B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011051400U1 (en) | 2011-09-22 | 2011-11-02 | Friedr. Dick Gmbh & Co. Kg | sharpener |
DE102011083177A1 (en) | 2011-09-22 | 2013-03-28 | Friedr. Dick Gmbh & Co. Kg | sharpener |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070101826A1 (en) * | 2002-11-12 | 2007-05-10 | Southern Mechanical & Structural, Inc. | Knife sharpener |
JP3925658B2 (en) * | 2004-10-04 | 2007-06-06 | 吉田金属工業株式会社 | Blade polishing equipment |
DE102006041538B3 (en) * | 2006-09-05 | 2008-01-10 | Friedr. Dick Gmbh & Co. Kg | Sharpening device for knife blades has a guide slot for knife blades to be sharpened and main moving sharpening rods fitted on each side of the guide slot |
FR2974748B1 (en) * | 2011-05-06 | 2014-05-16 | Bobet Materiel | IMPROVING DEVICES TO AFFILIATE TOOLS OF SHARP TOOLS |
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 (en) * | 2020-11-02 | 2021-10-08 | 王利君 | Graver sharpener |
Family Cites Families (11)
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 |
-
2001
- 2001-05-18 FR FR0106584A patent/FR2824770B1/en not_active Expired - Fee Related
-
2002
- 2002-05-17 AT AT02291238T patent/ATE363362T1/en not_active IP Right Cessation
- 2002-05-17 ES ES02291238T patent/ES2284795T3/en not_active Expired - Lifetime
- 2002-05-17 DE DE60220336T patent/DE60220336T2/en not_active Expired - Lifetime
- 2002-05-17 EP EP02291238A patent/EP1260318B1/en not_active Expired - Lifetime
- 2002-05-20 AU AU42380/02A patent/AU783875B2/en not_active Ceased
- 2002-05-20 US US10/150,020 patent/US6769326B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011051400U1 (en) | 2011-09-22 | 2011-11-02 | Friedr. Dick Gmbh & Co. Kg | sharpener |
DE102011083177A1 (en) | 2011-09-22 | 2013-03-28 | Friedr. Dick Gmbh & Co. Kg | sharpener |
WO2013041450A1 (en) | 2011-09-22 | 2013-03-28 | Friedr. Dick Gmbh & Co. Kg | Sharpening device |
Also Published As
Publication number | Publication date |
---|---|
AU4238002A (en) | 2002-11-21 |
US6769326B2 (en) | 2004-08-03 |
FR2824770B1 (en) | 2003-10-03 |
AU783875B2 (en) | 2005-12-15 |
ES2284795T3 (en) | 2007-11-16 |
DE60220336T2 (en) | 2008-02-28 |
DE60220336D1 (en) | 2007-07-12 |
FR2824770A1 (en) | 2002-11-22 |
US20030049998A1 (en) | 2003-03-13 |
ATE363362T1 (en) | 2007-06-15 |
EP1260318A1 (en) | 2002-11-27 |
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