EP1745826A1 - Process for machining running bases of wintersport apparatuses - Google Patents

Process for machining running bases of wintersport apparatuses Download PDF

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Publication number
EP1745826A1
EP1745826A1 EP06450094A EP06450094A EP1745826A1 EP 1745826 A1 EP1745826 A1 EP 1745826A1 EP 06450094 A EP06450094 A EP 06450094A EP 06450094 A EP06450094 A EP 06450094A EP 1745826 A1 EP1745826 A1 EP 1745826A1
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EP
European Patent Office
Prior art keywords
tool
winter sports
sports equipment
predetermined
lining blank
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Granted
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EP06450094A
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German (de)
French (fr)
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EP1745826B1 (en
Inventor
Robert Dipl.-Ing. Dr. Schamesberger
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Atomic Austria GmbH
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Atomic Austria GmbH
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/0428—Other in-relief running soles
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/044—Structure of the surface thereof of the running sole
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/30532—Milling including means to infeed work to cutter with means to advance work or product

Definitions

  • the invention relates to a method for processing treads of winter sports equipment, such as skis or snowboards, in which a pad blank is subjected to a machining operation to obtain a predetermined surface microstructure, which improves the lubricity.
  • the sliding of a winter sports equipment represents a friction case of a special kind. This is because the individual friction partners, such as covering, snow and intervening water film are difficult to define and the geometric conditions are difficult to describe and variable . It is known that the frictional resistance under circumstances such as in skis, but also in other circumstances, such as in boats or aircraft may possibly be favorably influenced by targeted roughening of the surface of the object in question.
  • One reason for the improved sliding properties of rough surfaces of skis is in the fact that suction effects are reduced or avoided at higher speeds.
  • polyethylene As a material for the production of Schibelägen has largely enforced polyethylene.
  • Particular advantages of polyethylene, especially with medium and high molecular weight are the good wear and sliding behavior of high toughness and at the same time excellent chemical resistance.
  • These advantages, in particular the abrasion resistance increase with increasing molecular weight, so that ultrahigh-molecular weight polyethylene with a molecular weight of several million is used, in particular for critical applications, such as racing.
  • the production and processing of ultrahigh molecular weight polyethylene linings is difficult because this material is not extrudable and extremely difficult to deform.
  • the surface structures required to improve the sliding properties are mostly applied by grinding operations, but this entails various disadvantages.
  • Another disadvantage of grinding methods is that the inevitable local heating of the lining surface undesirable chemical changes occur that worsen the sliding properties.
  • there may be chemical interactions between the abrasive material and the material of the lining which represents a further impairment.
  • the structure of a Schibelag can be divided into a macrostructure and a microstructure.
  • the macrostructure is defined as structures with a depth> 20 ⁇ m.
  • the microstructures are smaller structures.
  • the structuring is produced by grinding the surface, as described above, but only the macrostructure can be produced reproducibly.
  • the microstructure is dependent on a large number of parameters which can not be influenced directly, so that even under identical production conditions, there are great differences in the sliding behavior.
  • WO 03/061783 proposed to structure a coating by an embossing process in which an embossing roll is rolled over the coating to produce a microstructure.
  • the DE 40 13 901 A describes a method for profiling the treads of touring skis. Scaled structures are primarily produced in the area of the bond, which should improve the climbing behavior. Such structures must have typical orders of magnitude above the macrostructures as described above. In this case, a machining tool is guided in a sliding movement over the tread. It is not It is known to use such or a similar method for the production of microstructures.
  • Object of the present invention is to provide a method by which the above disadvantages are avoided and with which it is possible to produce a well-defined and reproducible surface structure of a covering for a winter sports equipment.
  • the greatest possible degrees of freedom in the geometric design of the surface structure should be possible.
  • the process should furthermore not cause any influence on the chemical composition and properties.
  • Another object of the present invention is to provide a winter sports equipment with a tread, which has optimal sliding properties due to their surface structure.
  • a device for producing such a coating should be specified.
  • the machining operation for producing the surface microstructure comprises a plastic deformation by a tool which is moved over a running surface of the lining blank and is pressed onto the lining blank with a predetermined force, to plastically deform this.
  • the microstructure refers to depressions or protrusions with a typical height dimension of less than 0.02 mm. It has been found that by a plastic deformation, which is brought about by a relative movement of the tool with respect to the surface of the covering or lining blank to be machined, a surface structure can be created, which is characterized by a local material displacement.
  • An essential aspect of the present invention is that the production of the surface structure is force-controlled, that is, the force with which a tool is pressed onto the running surface is largely independent of local thickness variations due to production tolerances or the like. In this way, the disadvantages described above can be avoided and in particular a uniform and completely reproducible surface structure without deterioration of the chemical properties is achieved.
  • a particularly favorable embodiment variant of the method according to the invention provides that during the deformation of the lining blank at least one tool tip is guided in sliding movement over the running surface of the lining blank.
  • a method is referred to in another context as guilloche. This is an engraving process that originated from metalworking and some time ago for the production of high quality Watches has been used.
  • a diamond cone is particularly preferably used for such a method, since due to the high hardness an extreme abrasion resistance is given and due to the inert material no chemical influences on the surface are to be feared.
  • the tool tip has a radius of about 0.02 mm. In this way, microstructures of optimum size can be produced.
  • a particularly advantageous variant of the method according to the invention is characterized in that the machining process comprising the plastic deformation takes place on the lining blank prior to application to the winter sports device.
  • Such a procedure includes several advantages. On the one hand, it is possible to work on a flat base which is not curved and prestressed in the longitudinal direction like an assembled ski. Another advantage of this variant of the method is that no consideration for steel edges has to be taken during machining of the coverings.
  • the lining blank is cut precisely and inserted into the recess between the steel edges.
  • the processing is carried out on a coordinate table, which is a working device in which a tool as in a plotter in the longitudinal and transverse directions can be moved over the workpiece.
  • the present invention further relates to a winter sports device having a tread, preferably made of polyethylene, whose tread has a predetermined structure.
  • such a winter sports device is characterized in that the structure is produced by plastic deformation. It has been found that such winter sports equipment in particular in critical applications, such as in racing, ie at very high speeds, and when using high quality materials such as ultra-high molecular weight polyethylene have particular advantages.
  • the structure is designed as a groove structure with a uniform depth. It has also been found to be favorable when the surface structure is composed of predetermined geometric patterns. Chemical changes of the surface of the covering can be avoided by fabricating the surface structure by chipless machining.
  • the invention relates to a device for producing coverings of winter sports equipment with a tool guide for guiding a tool that applies a predetermined surface structure on the tread of the covering.
  • a device for producing coverings of winter sports equipment with a tool guide for guiding a tool that applies a predetermined surface structure on the tread of the covering.
  • the tool is designed for plastic deformation of the tread and can be pressed with a predetermined force on the tread of the lining blank.
  • the processing performance can be improved in a particularly favored manner, that several tools for simultaneous processing of the tread of the lining blank are provided on the tool guide. In this way it is possible, for example, simultaneously to machine a slide day over its entire width, similar to conventional methods, without abandoning the advantages described above. It is particularly advantageous in this context, when the individual tools are spring-mounted independently. This ensures that each individual tool can optimally adapt to the respective local variations in thickness. Alternatively, however, other solutions, such as a hydraulic storage of the individual tools are possible. An optimal adaptation of the surface structure to the respective required sliding and driving properties of the winter sports equipment can be carried out in a particularly preferred manner by the fact that the tool guide has a control for the production of predetermined patterns on the running surface of the lining blank.
  • the tool of FIG. 1 is an engraving diamond 5 having a shank diameter D of, for example, 3 mm, a cone angle ⁇ of 60 °, and a radius R of the diamond tip 1 of 0.02 mm.
  • the pad blank is indicated by 20.
  • Fig. 2 shows a cutting wheel 5a, which consists of a cylindrical main body and a circumferential projection 3. From Fig. 3 it can be seen that this projection has 3 interruptions 4, which are distributed along the circumference.
  • Fig. 4 shows a multiple tool, in which side by side a plurality of diamond pins 5 are displaced in the longitudinal direction and each biased by a spring 6. Behind the pins 5 of the first row more pins are arranged on the gap in order to produce a larger groove density can.
  • Fig. 5 shows schematically a portion of a ski 7 with exaggerated sidecut.
  • the steel edges 8 delimit the running surface 9.
  • a plurality of grooves 11 is arranged at an angle ⁇ to the longitudinal axis 10a, which angle ⁇ in the given example is about 45 °.
  • the grooves 11 are arranged substantially in the longitudinal direction and wavy.
  • the embodiment of Fig. 7 corresponds substantially to that of Fig. 5 with the difference that the grooves 11 are arranged transversely to the longitudinal axis 10a.
  • the grooves 11 are in the form of triangular structures, which are distributed over gaps on the pad 9.
  • Fig. 9 shows the surface structure of Fig. 1 in detail.
  • a depression 31 is bounded by two elevations 30, which are produced by material displacement.
  • the vertical dimension of the recess 31 is designated h 1 and is for example 0.015 mm.
  • the vertical dimension of the elevations 31 is designated by h 2 and is about 0.01 mm.
  • the total height H is about 0.025 mm. Since both h 1 and h 2 are smaller than 0.02 mm, this is a microstructure in the sense of the invention.

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  • Road Repair (AREA)
  • Golf Clubs (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Turning (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Milling Processes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

The method involves moving a machining tool (5) over running surface (9) of a track blank (20), and pressing with preset force on the track blank to deform the track black to form groove structure with even depth. The tool has diamond tip (1) with radius (R) of 0.02mm and cone angle of 60[deg]. Independent claims are included for the following: (1) winter sports appliance; and (2) apparatus for producing tracks of winter sports appliance.

Description

Die Erfindung betrifft ein Verfahren zur Bearbeitung von Laufflächen von Wintersportgeräten, wie etwa Schiern oder Snowboards, bei dem ein Belagrohling einem Bearbeitungsvorgang unterworfen wird, um eine vorbestimmte Oberflächen-Mikrostruktur zu erhalten, die die Gleitfähigkeit verbessert.The invention relates to a method for processing treads of winter sports equipment, such as skis or snowboards, in which a pad blank is subjected to a machining operation to obtain a predetermined surface microstructure, which improves the lubricity.

Das Gleiten eines Wintersportgerätes, wie etwa eines Schis auf Schnee, stellt einen Reibungsfall besonderer Art dar. Dies hat seinen Grund darin, dass die einzelnen Reibpartner, wie Belag, Schnee und dazwischenliegender Wasserfilm schwer definierbar sind und die geometrischen Verhältnisse schwierig zu beschreiben und veränderlich sind. Es ist bekannt, dass der Reibungswiderstand unter Verhältnissen, wie sie etwa bei Schiern, aber auch unter anderen Umständen, wie etwa bei Booten oder Flugzeugen vorliegen, unter Umständen durch gezieltes Aufrauen der Oberfläche des betreffenden Gegenstandes günstig beeinflusst werden kann. Ein Grund für die verbesserten Gleiteigenschaften von rauen Oberflächen der Beläge bzw. Laufflächen von Schiern liegt in der Tatsache, dass Saugeffekte bei höheren Geschwindigkeiten verringert bzw. vermieden werden.The sliding of a winter sports equipment, such as a ski on snow, represents a friction case of a special kind. This is because the individual friction partners, such as covering, snow and intervening water film are difficult to define and the geometric conditions are difficult to describe and variable , It is known that the frictional resistance under circumstances such as in skis, but also in other circumstances, such as in boats or aircraft may possibly be favorably influenced by targeted roughening of the surface of the object in question. One reason for the improved sliding properties of rough surfaces of skis is in the fact that suction effects are reduced or avoided at higher speeds.

Als Material für die Herstellung von Schibelägen hat sich weitestgehend Polyethylen durchgesetzt. Besondere Vorteile von Polyethylen, insbesondere mit mittlerer und hoher Molmasse liegen im guten Verschleiß- und Gleitverhalten hoher Zähigkeit und gleichzeitig hervorragender Chemikalienbeständigkeit. Diese Vorteile, insbesondere die Abriebfestigkeit, steigen mit zunehmender Molmasse an, so dass insbesondere für kritische Anwendungsfälle, wie etwa den Rennsport, ultrahochmolekulares Polyethylen mit einer Molmasse von mehreren Millionen verwendet wird. Die Herstellung und Bearbeitung von Belägen aus ultrahochmolekularem Polyethylen ist jedoch schwierig, da dieses Material nicht extrudierbar und äußerst schwer verformbar ist.As a material for the production of Schibelägen has largely enforced polyethylene. Particular advantages of polyethylene, especially with medium and high molecular weight are the good wear and sliding behavior of high toughness and at the same time excellent chemical resistance. These advantages, in particular the abrasion resistance, increase with increasing molecular weight, so that ultrahigh-molecular weight polyethylene with a molecular weight of several million is used, in particular for critical applications, such as racing. However, the production and processing of ultrahigh molecular weight polyethylene linings is difficult because this material is not extrudable and extremely difficult to deform.

In der Praxis werden die zur Verbesserung der Gleiteigenschaften erforderlichen Oberflächenstrukturen zumeist durch Schleifvorgänge aufgebracht, was jedoch mit verschiedenen Nachteilen behaftet ist. Zum einen ist es aufgrund von unvermeidlichen Dickentoleranzen bei der Belagherstellung kaum möglich, eine gleichmäßige Oberflächenrauigkeit zu erzielen, da die Dickentoleranzen größer sind als die Tiefe der herzustellenden Struktur. Auf diese Weise ist es unvermeidlich, dass die Oberflächeneigenschaften, wie die Rautiefe, von den jeweils lokal vorliegenden Dickenschwankungen des Belagrohlings abhängen und somit ungleichmäßig und nicht reproduzierbar sind. Ein weiterer Nachteil von Schleifverfahren besteht darin, dass durch die unvermeidliche lokale Erwärmung der Belagoberfläche unerwünschte chemische Veränderungen auftreten, die die Gleiteigenschaften verschlechtern. Darüber hinaus kann es zu chemischen Wechselwirkungen zwischen dem Schleifmaterial und dem Material des Belages kommen, was eine weitere Beeinträchtigung darstellt.In practice, the surface structures required to improve the sliding properties are mostly applied by grinding operations, but this entails various disadvantages. On the one hand, it is hardly possible to achieve a uniform surface roughness due to unavoidable thickness tolerances in the production of linings, since the thickness tolerances are greater than the depth of the structure to be produced. That way, it's inevitable that the surface properties, such as the surface roughness, depend on the respectively locally present thickness variations of the lining blank and are thus uneven and not reproducible. Another disadvantage of grinding methods is that the inevitable local heating of the lining surface undesirable chemical changes occur that worsen the sliding properties. In addition, there may be chemical interactions between the abrasive material and the material of the lining, which represents a further impairment.

Aus der WO 03/061783 ist es bekannt, dass die Strukturierung eines Schibelags in eine Makrostruktur und eine Mikrostruktur unterteilt werden kann. Als Makrostruktur werden Strukturen mit einer Tiefe > 20 µm bezeichnet. Bei den Mikrostrukturen handelt es sich um kleinere Strukturen. In dieser Druckschrift wird zutreffend festgestellt, dass in der Praxis die Strukturierung durch Schleifen der Oberfläche hergestellt wird, wie dies oben beschrieben ist, wobei jedoch nur die Makrostruktur reproduzierbar hergestellt werden kann. Insbesondere ist die Mikrostruktur von einer Vielzahl von nicht direkt beeinflussbaren Parametern abhängig, so dass sich auch unter identischen Produktionsbedingungen große Unterschiede im Gleitverhalten ergeben. Um diese Nachteile zu vermeiden wird in der WO 03/061783 vorgeschlagen, einen Belag durch ein Prägeverfahren zu strukturieren, bei dem eine Prägewalze über den Belag abrollen gelassen wird, um eine Mikrostruktur herzustellen.From the WO 03/061783 It is known that the structure of a Schibelag can be divided into a macrostructure and a microstructure. The macrostructure is defined as structures with a depth> 20 μm. The microstructures are smaller structures. In this document, it is correctly stated that in practice the structuring is produced by grinding the surface, as described above, but only the macrostructure can be produced reproducibly. In particular, the microstructure is dependent on a large number of parameters which can not be influenced directly, so that even under identical production conditions, there are great differences in the sliding behavior. To avoid these disadvantages is in the WO 03/061783 proposed to structure a coating by an embossing process in which an embossing roll is rolled over the coating to produce a microstructure.

Solche Prägeverfahren stoßen jedoch mit zunehmender Molmasse des Materials des Belages auf zunehmende Schwierigkeiten, da eine plastische Verformung aufgrund der verringerten Fließeigenschaften nur mehr sehr eingeschränkt möglich ist. Daneben treten die bereits oben beschriebenen Ungleichmäßigkeiten zufolge der Dickentoleranz auf, da der lokale Druck des Prägewerkzeuges auf die Belagoberfläche sehr stark durch die Dickenschwankungen des Belages selbst beeinflusst wird. Aufgrund dieser Tatsachen ist es insbesondere bei hochmolekularen Belägen auch mit einem solchen Verfahren kaum möglich, reproduzierbare Oberflächenstrukturen herzustellen. Ein solches Prägeverfahren ist auch in der DE 102 43 310 A offenbart. Darüber hinaus beschreibt die EP 1 415 686 A ein modifiziertes Prägeverfahren, das die obigen Nachteile jedoch auch nicht beseitigen kann.However, such embossing methods encounter increasing difficulties with increasing molecular weight of the material of the covering, since plastic deformation is only possible to a very limited extent due to the reduced flow properties. In addition, the non-uniformities already described above occur as a result of the thickness tolerance, since the local pressure of the embossing tool on the lining surface is greatly influenced by the variations in thickness of the lining itself. Due to these facts, it is hardly possible to produce reproducible surface structures, especially in the case of high molecular weight coatings, even with such a process. Such embossing is also in the DE 102 43 310 A disclosed. In addition, the describes EP 1 415 686 A a modified embossing method, which however can not eliminate the above disadvantages.

Die DE 40 13 901 A beschreibt ein Verfahren zur Profilierung der Laufflächen von Tourenschiern. Dabei werden primär im Bereich der Bindung schuppenförmige Strukturen hergestellt, die das Steigverhalten verbessern sollen. Solche Strukturen müssen typische Größenordnungen aufweisen, die oberhalb der Makrostrukturen liegen, wie sie oben beschrieben sind. Dabei wird ein Bearbeitungswerkzeug in gleitender Bewegung über die Lauffläche geführt. Es ist jedoch nicht bekannt, ein solches oder ein ähnliches Verfahren zur Herstellung von Mikrostrukturen zu verwenden.The DE 40 13 901 A describes a method for profiling the treads of touring skis. Scaled structures are primarily produced in the area of the bond, which should improve the climbing behavior. Such structures must have typical orders of magnitude above the macrostructures as described above. In this case, a machining tool is guided in a sliding movement over the tread. It is not It is known to use such or a similar method for the production of microstructures.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren anzugeben, mit dem die obigen Nachteile vermieden werden und mit dem es möglich ist, eine genau definierte und reproduzierbare Oberflächenstruktur eines Belages für ein Wintersportgerät herzustellen. Dabei sollen möglichst große Freiheitsgrade bei der geometrischen Ausbildung der Oberflächenstruktur möglich sein. Das Verfahren soll weiterhin keine Beeinfluss der chemischen Zusammensetzung und Eigenschaften verursachen.Object of the present invention is to provide a method by which the above disadvantages are avoided and with which it is possible to produce a well-defined and reproducible surface structure of a covering for a winter sports equipment. In this case, the greatest possible degrees of freedom in the geometric design of the surface structure should be possible. The process should furthermore not cause any influence on the chemical composition and properties.

Eine weitere Aufgabe der vorliegenden Erfindung ist es, ein Wintersportgerät mit einer Lauffläche anzugeben, die aufgrund ihrer Oberflächenstruktur optimale Gleiteigenschaften aufweist. Darüber hinaus soll eine Vorrichtung zur Herstellung eines solchen Belages angegeben werden.Another object of the present invention is to provide a winter sports equipment with a tread, which has optimal sliding properties due to their surface structure. In addition, a device for producing such a coating should be specified.

Erfindungsgemäß werden diese Aufgaben durch ein Verfahren gelöst, das dadurch gekennzeichnet ist, dass der Bearbeitungsvorgang zur Herstellung der Oberflächen-Mikrostruktur eine plastische Verformung durch ein Werkzeug umfasst, das über eine Lauffläche des Belagrohlings bewegt wird und mit einer vorbestimmten Kraft auf den Belagrohling gedrückt wird, um diesen plastisch zu verformen. Als Mikrostruktur werden Vertiefungen oder Erhöhungen mit einer typischen Höhenabmessung von weniger als 0,02 mm bezeichnet. Es hat sich herausgestellt, dass durch eine plastische Verformung, die durch eine Relativbewegung des Werkzeuges in Bezug auf die Oberfläche des zu bearbeitenden Belages bzw. Belagrohling herbeigeführt wird, eine Oberflächenstruktur geschaffen werden kann, die durch eine lokale Materialverdrängung charakterisiert ist. Ein wesentlicher Aspekt der vorliegenden Erfindung besteht darin, dass die Herstellung der Oberflächenstruktur kraftgesteuert ist, das heißt, dass die Kraft, mit der ein Werkzeug auf die Lauffläche gedrückt wird, weitgehend unabhängig von lokalen Dickenschwankungen aufgrund von Produktionstoleranzen oder dergleichen ist. Auf diese Weise können die oben beschriebenen Nachteile vermieden werden und es wird insbesondere eine gleichmäßige und völlig reproduzierbare Oberflächenstruktur ohne Verschlechterung der chemischen Eigenschaften erreicht.According to the invention, these objects are achieved by a method which is characterized in that the machining operation for producing the surface microstructure comprises a plastic deformation by a tool which is moved over a running surface of the lining blank and is pressed onto the lining blank with a predetermined force, to plastically deform this. The microstructure refers to depressions or protrusions with a typical height dimension of less than 0.02 mm. It has been found that by a plastic deformation, which is brought about by a relative movement of the tool with respect to the surface of the covering or lining blank to be machined, a surface structure can be created, which is characterized by a local material displacement. An essential aspect of the present invention is that the production of the surface structure is force-controlled, that is, the force with which a tool is pressed onto the running surface is largely independent of local thickness variations due to production tolerances or the like. In this way, the disadvantages described above can be avoided and in particular a uniform and completely reproducible surface structure without deterioration of the chemical properties is achieved.

Eine besonders begünstigte Ausführungsvariante des erfindungsgemäßen Verfahrens sieht vor, dass bei der Verformung des Belagrohlings mindestens eine Werkzeugspitze in gleitender Bewegung über die Lauffläche des Belagrohlings geführt wird. Ein solches Verfahren wird in anderem Zusammenhang als guillochieren bezeichnet. Dabei handelt es sich um ein Gravierverfahren, das aus der Metallbearbeitung stammt und vor längerer Zeit zur Herstellung von hochwertigen Uhren eingesetzt worden ist. Besonders bevorzugt wird ein Diamantkonus für ein solches Verfahren verwendet, da aufgrund der großen Härte eine extreme Abriebfestigkeit gegeben ist und durch das inerte Material keine chemischen Beeinflussungen der Oberfläche zu befürchten sind.A particularly favorable embodiment variant of the method according to the invention provides that during the deformation of the lining blank at least one tool tip is guided in sliding movement over the running surface of the lining blank. Such a method is referred to in another context as guilloche. This is an engraving process that originated from metalworking and some time ago for the production of high quality Watches has been used. A diamond cone is particularly preferably used for such a method, since due to the high hardness an extreme abrasion resistance is given and due to the inert material no chemical influences on the surface are to be feared.

Besonders vorteilhaft ist es, wenn die Werkzeugspitze einen Radius von etwa 0,02 mm aufweist. Auf diese Weise können Mikrostrukturen optimaler Größenordnung hergestellt werden.It is particularly advantageous if the tool tip has a radius of about 0.02 mm. In this way, microstructures of optimum size can be produced.

Besonders günstige Gleiteigenschaften werden erzielt, wenn das Werkzeug zumindest abschnittsweise in einem vorbestimmten Winkel zur Längsrichtung des Belagrohlings bewegt wird. Wenn es sich um einen rechten Winkel handelt, verlaufen die hergestellten Rillen quer zur Fahrtrichtung, was bei bestimmten Schneeverhältnissen Vorteile bietet. Es ist aber auch möglich, Wellenmuster vorzusehen, wobei beide Ausführungsvariante Vorteile gegenüber der bekannten und weitgehend verfahrensbedingten Anordnung von Längsrillen auf der Belagoberfläche aufweisen.Particularly favorable sliding properties are achieved if the tool is moved at least in sections at a predetermined angle to the longitudinal direction of the lining blank. If it is a right angle, the grooves produced run transversely to the direction of travel, which offers advantages in certain snow conditions. But it is also possible to provide wave pattern, both variants have advantages over the known and largely procedural arrangement of longitudinal grooves on the lining surface.

Eine besonders vorteilhafte Variante des erfindungsgemäßen Verfahrens ist dadurch gekennzeichnet, dass der die plastische Verformung umfassende Bearbeitungsvorgang auf dem Belagrohling vor dem Aufbringen auf das Wintersportgerät erfolgt. Eine solche Verfahrensführung beinhaltet mehrere Vorteile. Zum einen kann auf einer planen Unterlage gearbeitet werden, die nicht wie ein zusammengebauter Schi in Längsrichtung gekrümmt und vorgespannt ist. Ein weiterer Vorteil dieser Verfahrensvariante besteht darin, dass bei der Bearbeitung der Belages keine Rücksicht auf Stahlkanten genommen werden muss. Vor oder nach der Bearbeitung wird der Belagrohling exakt zurechtgeschnitten und in die Ausnehmung zwischen den Stahlkanten passgenau eingebracht. Vorzugsweise erfolgt die Bearbeitung auf einem Koordinatentisch, das ist ein Arbeitsgerät, bei dem ein Werkzeug wie bei einem Plotter in Längs- und Querrichtung über das Werkstück bewegt werden kann.A particularly advantageous variant of the method according to the invention is characterized in that the machining process comprising the plastic deformation takes place on the lining blank prior to application to the winter sports device. Such a procedure includes several advantages. On the one hand, it is possible to work on a flat base which is not curved and prestressed in the longitudinal direction like an assembled ski. Another advantage of this variant of the method is that no consideration for steel edges has to be taken during machining of the coverings. Before or after processing, the lining blank is cut precisely and inserted into the recess between the steel edges. Preferably, the processing is carried out on a coordinate table, which is a working device in which a tool as in a plotter in the longitudinal and transverse directions can be moved over the workpiece.

Die vorliegende Erfindung betrifft weiters ein Wintersportgerät mit einer Lauffläche, vorzugsweise aus Polyethylen, deren Lauffläche eine vorbestimmte Struktur aufweist.The present invention further relates to a winter sports device having a tread, preferably made of polyethylene, whose tread has a predetermined structure.

Erfindungsgemäß ist ein solches Wintersportgerät dadurch gekennzeichnet, dass die Struktur durch plastische Verformung hergestellt ist. Es hat sich herausgestellt, dass solche Wintersportgeräte insbesondere in kritischen Anwendungen, wie etwa im Rennsport, also bei sehr hohen Geschwindigkeiten, und bei Verwendung hochqualitativen Materialien, wie ultrahochmolekularem Polyethylen besondere Vorteile aufweisen.According to the invention, such a winter sports device is characterized in that the structure is produced by plastic deformation. It has been found that such winter sports equipment in particular in critical applications, such as in racing, ie at very high speeds, and when using high quality materials such as ultra-high molecular weight polyethylene have particular advantages.

Besonders günstig für die Gleiteigenschaften ist es in diesem Zusammenhang, wenn die Struktur als Rillenstruktur mit gleichmäßiger Tiefe ausgebildet ist. Dabei hat es sich weiters als günstig herausgestellt, wenn die Oberflächenstruktur aus vorbestimmten geometrischen Mustern zusammengesetzt ist. Chemische Veränderungen der Belagoberfläche können dadurch vermieden werden, dass die Oberflächenstruktur durch spanlose Bearbeitung hergestellt ist.In this context, it is particularly favorable for the sliding properties if the structure is designed as a groove structure with a uniform depth. It has also been found to be favorable when the surface structure is composed of predetermined geometric patterns. Chemical changes of the surface of the covering can be avoided by fabricating the surface structure by chipless machining.

Im Weiteren betrifft die Erfindung eine Vorrichtung zur Herstellung von Belägen von Wintersportgeräten mit einer Werkzeugführung zur Führung eines Werkzeuges, das eine vorbestimmte Oberflächenstruktur auf der Lauffläche des Belages aufbringt. Gemäß der erfindungsgemäßen Ausbildung ist eine solche Vorrichtung dadurch gekennzeichnet, dass das Werkzeug zur plastischen Verformung der Lauffläche ausgebildet ist und mit einer vorbestimmten Kraft auf die Lauffläche des Belagrohlings pressbar ist.Furthermore, the invention relates to a device for producing coverings of winter sports equipment with a tool guide for guiding a tool that applies a predetermined surface structure on the tread of the covering. According to the embodiment of the invention, such a device is characterized in that the tool is designed for plastic deformation of the tread and can be pressed with a predetermined force on the tread of the lining blank.

Die Bearbeitungsleistung kann in besonders begünstigter Weise dadurch verbessert werden, dass an der Werkzeugführung mehrere Werkzeuge zur gleichzeitigen Bearbeitung der Lauffläche des Belagrohlings vorgesehen sind. Auf diese Weise ist es beispielsweise möglich, einen Schibelag ähnlich wie bei herkömmlichen Verfahren gleichzeitig über seine gesamte Breite zu bearbeiten, ohne die oben beschriebenen Vorteile aufzugeben. Besonders günstig ist es in diesem Zusammenhang, wenn die einzelnen Werkzeuge unabhängig voneinander federnd gelagert sind. Dadurch wird gewährleistet, dass sich jedes einzelne Werkzeug den jeweils vorliegenden lokalen Dickenschwankungen optimal anpassen kann. Alternativ dazu sind jedoch auch andere Lösungen, wie etwa eine hydraulische Lagerung der einzelnen Werkzeugen möglich. Eine optimale Anpassung der Oberflächenstruktur auf die jeweils geforderten Gleit- und Fahreigenschaften des Wintersportgerätes kann in besonders bevorzugter Weise dadurch erfolgen, dass die Werkzeugführung eine Steuerung zur Herstellung vorbestimmter Muster auf der Lauffläche des Belagrohlings aufweist.The processing performance can be improved in a particularly favored manner, that several tools for simultaneous processing of the tread of the lining blank are provided on the tool guide. In this way it is possible, for example, simultaneously to machine a slide day over its entire width, similar to conventional methods, without abandoning the advantages described above. It is particularly advantageous in this context, when the individual tools are spring-mounted independently. This ensures that each individual tool can optimally adapt to the respective local variations in thickness. Alternatively, however, other solutions, such as a hydraulic storage of the individual tools are possible. An optimal adaptation of the surface structure to the respective required sliding and driving properties of the winter sports equipment can be carried out in a particularly preferred manner by the fact that the tool guide has a control for the production of predetermined patterns on the running surface of the lining blank.

In der Folge wird die vorliegende Erfindung anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert. Es zeigen:

Fig. 1
schematisch ein Detail eines einzelnen Werkzeuges in einer Ansicht;
Fig. 2
eine alternative Ausführungsvariante eines Werkzeuges im Schnitt;
Fig. 3
einen Schnitt nach Linie III-III von Fig. 2;
Fig. 4
ein Vielfachwerkzeug;
Fig. 5
bis Fig. 8 verschiedene Ausführungsvarianten der Bearbeitung des Belages; und
Fig. 9
ein Detail von Fig. 1.
As a result, the present invention will be explained in more detail with reference to the embodiments illustrated in FIGS. Show it:
Fig. 1
schematically a detail of a single tool in a view;
Fig. 2
an alternative embodiment of a tool in section;
Fig. 3
a section along line III-III of Fig. 2;
Fig. 4
a multiple tool;
Fig. 5
to 8 different variants of the processing of the coating; and
Fig. 9
a detail of Fig. 1.

Bei dem Werkzeug von Fig. 1 handelt es sich um einen Gravierdiamanten 5 mit einem Schaftdurchmesser D von beispielsweise 3 mm, einem Konuswinkel α von 60° und einem Radius R der Diamantspitze 1 von 0,02 mm. Der Belagrohling ist mit 20 angedeutet.The tool of FIG. 1 is an engraving diamond 5 having a shank diameter D of, for example, 3 mm, a cone angle α of 60 °, and a radius R of the diamond tip 1 of 0.02 mm. The pad blank is indicated by 20.

Fig. 2 zeigt ein Schneidrad 5a, das aus einem zylindrischen Hauptkörper und einer einem umlaufenden Vorsprung 3 besteht. Aus Fig. 3 ist ersichtlich, dass dieser Vorsprung 3 Unterbrechungen 4 aufweist, die entlang des Umfanges verteilt sind.Fig. 2 shows a cutting wheel 5a, which consists of a cylindrical main body and a circumferential projection 3. From Fig. 3 it can be seen that this projection has 3 interruptions 4, which are distributed along the circumference.

Fig. 4 zeigt ein Mehrfachwerkzeug, bei dem nebeneinander mehrere Diamantstifte 5 in Längsrichtung verschiebbar und jeweils durch eine Feder 6 vorgespannt sind. Hinter den Stiften 5 der ersten Reihe sind auf Lücke weitere Stifte angeordnet, um eine größere Rillendichte erzeugen zu können.Fig. 4 shows a multiple tool, in which side by side a plurality of diamond pins 5 are displaced in the longitudinal direction and each biased by a spring 6. Behind the pins 5 of the first row more pins are arranged on the gap in order to produce a larger groove density can.

Die Fig. 5 zeigt schematisch einen Abschnitt eines Schis 7 mit übertriebener Taillierung. Die Stahlkanten 8 begrenzen die Lauffläche 9. Eine Vielzahl von Rillen 11 ist in einem Winkel β zur Längsachse 10a angeordnet, welcher Winkel β im gegebenen Beispiel etwa 45° beträgt.Fig. 5 shows schematically a portion of a ski 7 with exaggerated sidecut. The steel edges 8 delimit the running surface 9. A plurality of grooves 11 is arranged at an angle β to the longitudinal axis 10a, which angle β in the given example is about 45 °.

Bei der Ausführungsvariante von Fig. 6 sind die Rillen 11 im Wesentlichen in Längsrichtung angeordnet und wellenförmig ausgeführt. Die Ausführungsvariante von Fig. 7 entspricht im Wesentlichen der von Fig. 5 mit dem Unterschied, dass die Rillen 11 quer zur Längsachse 10a angeordnet sind.In the embodiment of Fig. 6, the grooves 11 are arranged substantially in the longitudinal direction and wavy. The embodiment of Fig. 7 corresponds substantially to that of Fig. 5 with the difference that the grooves 11 are arranged transversely to the longitudinal axis 10a.

Bei der Ausführungsvariante von Fig. 8 liegen die Rillen 11 in der Form von dreieckigen Strukturen vor, die auf Lücken über den Belag 9 verteilt angeordnet sind.In the embodiment of Fig. 8, the grooves 11 are in the form of triangular structures, which are distributed over gaps on the pad 9.

Fig. 9 zeigt die Oberflächenstruktur von Fig. 1 im Detail. Eine Vertiefung 31 ist von zwei Erhebungen 30 begrenzt, die durch Materialverdrängung erzeugt sind. Die vertikale Abmessung der Vertiefung 31 ist mit h1 bezeichnet und beträgt beispielsweise 0,015 mm. Die vertikale Abmessung der Erhebungen 31 ist mit h2 bezeichnet und beträgt etwa 0,01 mm. Somit beträgt die Gesamthöhe H etwa 0,025 mm. Da sowohl h1 als auch h2 kleiner sind als 0,02 mm handelt es sich hier um eine Mikrostruktur im Sinne der Erfindung.Fig. 9 shows the surface structure of Fig. 1 in detail. A depression 31 is bounded by two elevations 30, which are produced by material displacement. The vertical dimension of the recess 31 is designated h 1 and is for example 0.015 mm. The vertical dimension of the elevations 31 is designated by h 2 and is about 0.01 mm. Thus, the total height H is about 0.025 mm. Since both h 1 and h 2 are smaller than 0.02 mm, this is a microstructure in the sense of the invention.

Claims (26)

Verfahren zur Bearbeitung von Laufflächen (9) von Wintersportgeräten, wie etwa Schiern oder Snowboards, bei dem ein Belagrohling (20) einem Bearbeitungsvorgang unterworfen wird, um eine vorbestimmte Oberflächen-Mikrostruktur zu erhalten, die die Gleitfähigkeit verbessert, dadurch gekennzeichnet, dass der Bearbeitungsvorgang zur Herstellung der Oberflächen-Mikrostruktur eine plastische Verformung durch ein Werkzeug (5, 5a) umfasst, das über eine Lauffläche (9) des Belagrohlings (20) bewegt wird und mit einer vorbestimmten Kraft auf den Belagrohling (20) gedrückt wird, um diesen plastisch zu verformen.A method of processing running surfaces (9) of winter sports equipment, such as skis or snowboards, in which a padding blank (20) is subjected to a machining operation to obtain a predetermined surface microstructure which improves slipperiness, characterized in that the machining operation for Production of the surface microstructure comprises a plastic deformation by a tool (5, 5a) which is moved over a running surface (9) of the lining blank (20) and with a predetermined force on the lining blank (20) is pressed to this plastically deform. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei der Verformung des Belagrohlings (20) mindestens eine Werkzeugspitze (1) in gleitender Bewegung über die Lauffläche (9) des Belagrohlings (20) geführt wird.A method according to claim 1, characterized in that during the deformation of the lining blank (20) at least one tool tip (1) in sliding movement over the running surface (9) of the lining blank (20) is guided. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Werkzeugspitze als Diamantkonus (1) ausgebildet ist.A method according to claim 2, characterized in that the tool tip is formed as a diamond cone (1). Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Werkzeugspitze einen Radius von etwa 0,02 mm aufweist und dass die Anpresskraft vorzugsweise so gewählt wird, dass die Eindringtiefe der Werkzeugspitze kleiner ist als 0,02 mm.A method according to claim 3, characterized in that the tool tip has a radius of about 0.02 mm and that the contact pressure is preferably selected so that the penetration depth of the tool tip is smaller than 0.02 mm. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Bearbeitungsvorgang mittels eines Werkzeuges (5, 5a) durchgeführt wird, das federnd gelagert ist und auf diese Weise auf die Lauffläche (9) des Belagrohlings (20) gedrückt wird.Method according to one of claims 1 to 4, characterized in that the machining operation by means of a tool (5, 5a) is performed, which is resiliently mounted and in this way on the running surface (9) of the lining blank (20) is pressed. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Werkzeug (5, 5a) zumindest abschnittsweise in einem vorbestimmten Winkel (β) zur Längsachse des Belagrohlings (20) bewegt wird.Method according to one of claims 1 to 5, characterized in that the tool (5, 5a) at least in sections at a predetermined angle (β) to the longitudinal axis of the lining blank (20) is moved. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Werkzeug (5, 5a) in wellenförmigen Bewegungen über den Belagrohling (20) geführt wird.Method according to one of claims 1 to 5, characterized in that the tool (5, 5a) is guided in undulating movements over the lining blank (20). Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der die plastische Verformung umfassende Bearbeitungsvorgang auf dem Belagrohling (20) vor dem Aufbringen der Lauffläche (9) auf das Wintersportgerät erfolgt.Method according to one of claims 1 to 7, characterized in that the plastic deformation comprehensive processing operation on the lining blank (20) before applying the tread (9) takes place on the winter sports equipment. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der die plastische Verformung umfassende Bearbeitungsvorgang auf einem Koordinatentisch durchgeführt wird.Method according to one of claims 1 to 8, characterized in that the plastic deformation comprehensive processing operation is carried out on a coordinate table. Wintersportgerät mit einer Lauffläche (9), vorzugsweise aus Polyethylen, deren Oberfläche eine vorbestimmte Struktur aufweist, die eine Oberflächen-Mikrostruktur umfasst, dadurch gekennzeichnet, dass die Oberflächen-Mikrostruktur durch plastische Verformung der Lauffläche (9) hergestellt ist.Winter sports equipment having a tread (9), preferably made of polyethylene, the surface of which has a predetermined structure comprising a surface microstructure, characterized in that the surface microstructure is made by plastic deformation of the tread (9). Wintersportgerät nach Anspruch 10, dadurch gekennzeichnet, dass die Struktur als Rillenstruktur mit gleichmäßiger Tiefe ausgebildet ist.Winter sports equipment according to claim 10, characterized in that the structure is formed as a groove structure with a uniform depth. Wintersportgerät nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass die Oberflächenstruktur aus vorbestimmten geometrischen Mustern zusammengesetzt ist.Winter sports equipment according to claim 10 or 11, characterized in that the surface structure is composed of predetermined geometric patterns. Wintersportgerät nach Anspruch 12, dadurch gekennzeichnet, dass die Oberflächenstruktur Rillen (11) aufweist, die in einem vorbestimmten Winkel (β) zur Längsrichtung der Lauffläche (9) angeordnet sind.Winter sports equipment according to claim 12, characterized in that the surface structure grooves (11) which are arranged at a predetermined angle (β) to the longitudinal direction of the tread (9). Wintersportgerät nach Anspruch 12, dadurch gekennzeichnet, dass die Oberflächenstruktur Rillen (11) aufweist, die senkrecht zur Längsrichtung der Lauffläche (9) angeordnet sind.Winter sports equipment according to claim 12, characterized in that the surface structure grooves (11) which are arranged perpendicular to the longitudinal direction of the tread (9). Wintersportgerät nach Anspruch 12, dadurch gekennzeichnet, dass die Oberflächenstruktur Rillen (11) aufweist, die wellenförmig ausgebildet sind.Winter sports equipment according to claim 12, characterized in that the surface structure grooves (11), which are formed wave-shaped. Wintersportgerät nach einem der Ansprüche 10 bis 15, dadurch gekennzeichnet, dass die Oberflächenstruktur durch spanlose Bearbeitung hergestellt ist.Winter sports equipment according to one of claims 10 to 15, characterized in that the surface structure is produced by chipless machining. Vorrichtung zur Herstellung von Belägen von Wintersportgeräten mit einer Werkzeugführung zur Führung eines Werkzeuges, das eine vorbestimmte Oberflächenstruktur auf der Lauffläche (9) des Belages aufbringt, die eine Oberflächen-Mikrostruktur umfasst, dadurch gekennzeichnet, dass das Werkzeug (5, 5a) zur Herstellung der Oberflächen-Mikrostruktur dazu ausgebildet ist, eine plastischen Verformung der Lauffläche (9) zu bewirken und mit einer vorbestimmten Kraft auf die Lauffläche (9) des Belagrohlings (20) pressbar ist.Apparatus for the production of coverings of winter sports equipment with a tool guide for guiding a tool which applies a predetermined surface structure on the running surface (9) of the covering comprising a surface microstructure, characterized in that the tool (5, 5a) for producing the Surface microstructure is adapted to cause a plastic deformation of the tread (9) and with a predetermined force on the running surface (9) of the lining blank (20) can be pressed. Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, dass das Werkzeug eine Werkzeugspitze (1) zur Herstellung einer Rille (11) mit einem vorbestimmten Profil aufweist.Apparatus according to claim 17, characterized in that the tool has a tool tip (1) for producing a groove (11) having a predetermined profile. Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, dass die Werkzeugspitze (1) aus Diamant hergestellt ist.Apparatus according to claim 18, characterized in that the tool tip (1) is made of diamond. Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, dass die Werkzeugspitze einen Radius von etwa 0,02 mm aufweist.Apparatus according to claim 19, characterized in that the tool tip has a radius of about 0.02 mm. Vorrichtung nach einem der Ansprüche 17 bis 21, dadurch gekennzeichnet, dass die Werkzeugspitze einen Konuswinkel α von etwa 60° aufweist.Device according to one of claims 17 to 21, characterized in that the tool tip has a cone angle α of about 60 °. Vorrichtung nach einem der Ansprüche 17 bis 21, dadurch gekennzeichnet, dass das Werkzeug (5, 5a) in der Werkzeugführung federnd gelagert ist.Device according to one of claims 17 to 21, characterized in that the tool (5, 5a) is resiliently mounted in the tool guide. Vorrichtung nach einem der Ansprüche 17 bis 22, dadurch gekennzeichnet, dass an der Werkzeugführung mehrere Werkzeuge (5) zur gleichzeitigen Bearbeitung der Lauffläche (9) des Belagrohlings (20) vorgesehen sind.Device according to one of claims 17 to 22, characterized in that on the tool guide a plurality of tools (5) for the simultaneous processing of the running surface (9) of the lining blank (20) are provided. Vorrichtung nach Anspruch 23, dadurch gekennzeichnet, dass die einzelnen Werkzeuge (5) unabhängig voneinander federnd gelagert sind.Apparatus according to claim 23, characterized in that the individual tools (5) are spring-mounted independently of each other. Vorrichtung nach einem der Ansprüche 17 bis 24, dadurch gekennzeichnet, dass die Werkzeugführung eine Steuerung zur Herstellung vorbestimmter Muster auf der Lauffläche (9) des Belagrohlings (20) aufweist.Device according to one of claims 17 to 24, characterized in that the tool guide has a control for the production of predetermined patterns on the running surface (9) of the lining blank (20). Vorrichtung nach einem der Ansprüche 17 bis 25, dadurch gekennzeichnet, dass ein Koordinatentisch zur Bewegung des Werkzeuges (5) vorgesehen ist.Device according to one of claims 17 to 25, characterized in that a coordinate table for movement of the tool (5) is provided.
EP06450094A 2005-07-14 2006-07-06 Process for machining running bases of wintersport apparatuses Not-in-force EP1745826B1 (en)

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AT403887B (en) * 1991-11-19 1998-06-25 Rossignol Sa SLIDING DEVICE OR SLIDING BOARD FOR SLIDING ON SNOW
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WO2003061783A1 (en) * 2002-01-22 2003-07-31 Fischer Gesellschaft M.B.H. Method for producing a structured running surface for gliding devices and a textured running surface produced according to said method

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US7891694B2 (en) 2011-02-22
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JP2007021222A (en) 2007-02-01
DE502006000068D1 (en) 2007-10-04
EP1745826B1 (en) 2007-08-22
US20060251486A1 (en) 2006-11-09
AT502101A1 (en) 2007-01-15

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