EP1262283B1 - Bayonet-type locking arrangement for a consumable grinding disk and a supporting plate - Google Patents
Bayonet-type locking arrangement for a consumable grinding disk and a supporting plate Download PDFInfo
- Publication number
- EP1262283B1 EP1262283B1 EP02010336A EP02010336A EP1262283B1 EP 1262283 B1 EP1262283 B1 EP 1262283B1 EP 02010336 A EP02010336 A EP 02010336A EP 02010336 A EP02010336 A EP 02010336A EP 1262283 B1 EP1262283 B1 EP 1262283B1
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- EP
- European Patent Office
- Prior art keywords
- bayonet
- type locking
- elements
- arrangement according
- locking arrangement
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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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/20—Mountings for the wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/16—Bushings; Mountings
Definitions
- the invention relates to a bayonet closure between a consumable grinding wheel and a clamping disk having the features of the preamble of claim 1.
- a bayonet lock is known from DE 44 30 229 A1 , In particular Fig. 7 to 9 with description, known per se.
- the abrasive is mounted on a support disc, which must be disposed of when consuming the abrasive. If such a consumable grinding wheel is to be stable in continuous use, the requirement of static strength substantially with certain cost portion of the consumable support disk on the whole consumable grinding wheel is relatively high and provides primarily reason for considerations to reduce the cost portion of the consumable support disc can significantly .
- the aim is to reduce the cost portion of the consumable carrier disk on the consumable grinding wheel and to assign the static strength to a large part of a clamping disk, which is permanently connected as a non-consumable part with the grinding machine or at least connectable with this is. After consumption of the abrasive is then attached to the same clamping disc a new consumable grinding wheel, is attached to the abrasive on a consumable support plate, via a bayonet lock.
- bayonet lock from which the preamble of claim 1 proceeds, during the relative rotation of the clamping plate and support plate tapers in the finally locked bayonet closure engagement, the axial relative guidance of clamping plate and support plate so that when locked bayonet closure engagement the support disc held axially clamped on the clamping plate is.
- the invention has for its object, at least partially and as completely as possible to relieve the first bayonet closure elements of the production complicated and not always durable load additional tasks of clamping the support plate on the clamping disk.
- the technical task in the form-fitting locked by the first bayonet closure elements end position of the bayonet closure engagement axially foundedspannen the support disk on the clamping plate, at least partially and preferably assigned entirely to the second bayonet closure elements. It is possible and even preferable to relieve the first bayonet closure elements entirely from the function of applying an axial clamping force between support plates / clamping plate and assign this function entirely the second bayonet closure elements, even if this according to claim 7 in additional function and not as in the DE 44 30 229 A1 in a single function, even a locking of the relative rotational position of the clamping disk and the support disk in the form-locking locked bayonet engagement of the first bayonet closure elements effect.
- the second bayonet closure elements at least partially and preferably entirely the relative axial clamping force of the support disk on the clamping disc.
- the task of shaping the positive engagement of the first bayonet closure elements is simplified with each other, even if they still take a share of the axial clamping force of the support disk on the clamping disk, then expediently a half portion or preferably a smaller proportion.
- a partial allocation of the axial clamping force even to the first bayonet closure elements is especially in question when the locations of the axial local clamping as many around the axis should be arranged, for example, because otherwise the consumable support plate can move together with the applied abrasive on her.
- the clamping plate is advantageously made integrally of metal or a high-strength plastic.
- the support plate can be formed without or without excellent on their back face excellent bayonet closure elements; in any case, a stackability of the consumable grinding wheels is favored.
- the engaging elements of the first bayonet closure elements are claimed axially to train.
- a particularly simple shape is the mushroom mold according to claim 3, whose simplest shape can be through a cylindrical shaft with a circular disk as a head. This can be realized stably on the not subject to wear clamping disk.
- first bayonet closure elements can cooperate particularly advantageously with the first bayonet closure elements which can be designed free from elevations on the carrier disk according to claim 4.
- an insertion guide be formed with, which is not realized in the embodiment described later.
- the latching according to claim 7 fixes the relative angular position of the support disk on the clamping disk in the end position of the bayonet closure engagement.
- claims 12 and 13 a backup against relative translational displacements transverse to the axis of the support disk and clamping disk.
- the consumable support plate together with the elements arranged on it the first and second bayonet closure elements integrally made of a plastic, preferably as an injection molded part.
- Figs. 1a to 1c show a permanent-resistant clamping plate 1, which is made of metal integrally.
- a permanent-resistant clamping plate 1 is for example a die-cast part, wherein as material in particular aluminum or an aluminum alloy is offered.
- the manufacture also comes from a durable plastic, e.g. PPT or PPS, in which case the production as an injection-molded part is preferred.
- the main body of the clamping disk 1 is an annular disk 2, the outer edge of which has a bevel 3 tapering in the direction of the grinding machine (not shown).
- annular disk 2 Around the frontal face 4 extends in a continuous connection to the chamfer 3, a cylindrically encircling outer edge 5 with a lying in a common radial plane annular plan support surface 6.
- the annular disc 2 Radially further inside than the annular frontal support surface 4, the annular disc 2 in a in Direction to the grinding machine tapered conical connecting piece 7 continues, wherein also the inner connection region between the connecting piece 7 and the frontal end face 4 is formed as a chamfer 8.
- the grinder facing the end of the connecting piece 7 is closed by an annular disc 9, in which an axial circular opening 10 is provided for the mounting of the clamping plate 1 on the shaft, also not shown, of the grinding machine.
- the frontal face 4 of the clamping plate 1 are at uniform angular intervals engaging behind the first Bayonet closure elements 11 distributed. Without limiting the generality of four such bayonet closure elements 11 are provided, each of which is assigned to each right angle segment.
- the bayonet closure elements 11 have approximately the same radial distance from the inner and the outer circular edge of the frontal end face. 4
- the bayonet closure elements 11 are mushroom-shaped with a stem 13 having the shape of a cylindrical pin and a mushroom head 14 formed as a projecting flat annular flange. Alternatively, other shapes, not shown, of the trunk 13 and the mushroom head 14 come into question.
- second bayonet closure elements 15 are nested around the axis of the frontal end face 4 between the engaging behind the first bayonet closure elements 11, which protrude in the same direction as the first bayonet closure elements 11 of the frontal face 4. They have the shape of a circular arc around the axis of the frontal face 4 extending ramp, whose two end portions are each formed as a ramp 16.
- the ramps 16 rise steadily from the radial plane of the frontal face 4 to a central apex region 17.
- the two radially outer and radially inner edges of the ramp are formed as openings 18 and 19, respectively.
- FIGS. 1a to 1c show a consumable carrier disk 21 of a grinding wheel which can be consumed in its entirety.
- abrasive that is consumed during grinding is applied to the frontal end face facing away from the observer of FIGS. 2a and 2b.
- the support disc 21 is disposed of, as far as the abrasive is consumed. Any known type of abrasive application is contemplated. In particular, but not exclusively, cases are considered in which the abrasive is applied either as a continuous disk or circumferentially overlapping abrasive blades. It can be provided manifold variations in material and structure, for example, single or multi-layered structure, with and without reinforcement insert, etc.
- the support plate 21 is suitably made together with their components described below integrally made of a plastic, preferably as an injection molded part.
- the support plate 21 shows a skeletal structure of webs. Their main body has two concentric annular webs 22 and 23, which are stiffened against each other by subsequently considered in more detail intermediate webs.
- a special feature consists in the fact that the elements of the first and second bayonet closure elements, which cooperate with the bayonet closure elements 11 and 15 on the clamping plate 1, are formed by the skeletal web structure with.
- the two ring lands 22 and 23 are rigidly connected to each other by radial connecting webs 24 and 25 distributed over the circumference, with connecting webs 24 or 25 of the same numbering being distributed at equal angular distances among each other over the circumference of the carrying disk 21.
- the connecting webs 25 are arranged in the one angular direction with about one third and in the other angular direction, in Fig. 2a in the clockwise direction, with about two-thirds of the angular distance of the connecting webs 24.
- the number of connecting webs 24 is equal to the number of first bayonet closure elements 12 on the clamping plate 1 and the number of connecting webs 25 equal to the number of second bayonet closure elements 15 on the clamping disk. 1
- annular web portions 26a and 26b In the radial gap between the annular webs 22 and 23 are annular web portions 26a and 26b nested, which cross the radial connecting webs 24 and 25 and complement each other in the circumferential direction.
- first and second bayonet closure elements which cooperate with the first and second bayonet closure elements 11 and 15 of the clamping plate 1 as a bayonet closure, as follows formed on the web-like skeleton structure of the support disk 21.
- the first bayonet closure elements 28 of the support disk 21 are formed by the fact that the annular web sections 26b form an undercut groove 29, which is formed open in the counterclockwise direction in the illustration of FIG. 2a and closed in the clockwise direction. At the open end, a support of the radially inner leg of the undercut groove 29 takes place through a radial web stub 30 between the annular web section 26b and the radially inner annular web 22.
- the annular land portion 26b is then continued to form the radially inner leg of the undercut groove 29 in a clockwise direction to then extend to form the completion of the undercut groove 29 U-shaped curved outward, where counterclockwise to form the radially outer leg the undercut groove 29 is a rearward extension of the annular land portion 26b. This ends at the open end of the undercut groove 29, where the annular web section 26b merges via a further radial web stub 31 in the outer annular ridge 22.
- the undercut of the undercut groove 29 is achieved in that in the inner region of the undercut groove 29 whose insertion opening is narrowed by a flange-like overhang 32 at the rear edge of the annular web portion 26 b.
- the mushroom head 14 of the first bayonet closure elements 11 on the clamping plate 1 can engage in the overhang in the locked position of the bayonet closure.
- the two stub stems 30 and 31 are at the same radius. In addition, approximately equal angular intervals of the sequence of web stubs 30, 31, radial connecting webs 24 and radial connecting webs 25 are provided in the circumferential direction.
- the second bayonet closure elements 33 of the support disk 21 are formed by the respective rear outer edge of the annular web portions 26a in the area A of Fig. 2a and 2b, and according to FIG. 2d there and in the vicinity thereof, where an intersection with the radial connecting webs 25 takes place.
- the radially outer annular ridge 23 carries on its front side an outer annular flange 35. On these comes the outer edge 5 of the clamping plate 1 to lie during the clamping. In addition, while the outer edge 5 surrounds the outer annular ridge 23 so that an otherwise conceivable translational displacement of the support plate 21 is blocked with respect to the clamping plate 1 transverse to the axial direction.
- a chamfer 36 is finally provided at the radial inner edge of the annular web 22 .
- the free rear edge of the annular web 23 is formed with an outer chamfer 37.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Connection Of Plates (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Bajonettverschluß zwischen einer verbrauchbaren Schleifscheibe und einer Aufspannscheibe mit den Merkmalen des Oberbegriffs von Anspruch 1. Ein solcher Bajonettverschluß ist aus der
Bei verbrauchbaren Schleifscheiben ist das Schleifmittel auf einer Tragscheibe angebracht, die bei Aufbrauch des Schleifmittels entsorgt werden muß. Wenn eine solche verbrauchbare Schleifscheibe im Dauergebrauch stabil sein soll, ist der durch die Anforderung statischer Festigkeit wesentlich mit bestimmten Kostenanteil der verbrauchbaren Tragscheibe an der ganzen verbrauchbaren Schleifscheibe relativ hoch und bietet in erster Linie Anlaß für Überlegungen, den Kostenanteil der verbrauchbaren Tragscheibe deutlich reduzieren zu können. Bei Bajonettverschlüssen der vorliegenden Art geht es darum, den Kostenanteil der verbrauchbaren Tragscheibe an der im ganzen verbrauchbaren Schleifscheibe zu reduzieren und die statische Festigkeit zu einem großen Teil einer Aufspannscheibe zuzuweisen, die als nicht verbrauchbarer Teil mit der Schleifmaschine dauerhaft verbunden ist oder jedenfalls mit dieser verbindbar ist. Nach Verbrauch des Schleifmittels wird dann auf dieselbe Aufspannscheibe eine neue verbrauchbare Schleifscheibe, bei der Schleifmittel auf einer verbrauchbaren Tragscheibe angebracht ist, über einen Bajonettverschluß befestigt.For consumable grinding wheels, the abrasive is mounted on a support disc, which must be disposed of when consuming the abrasive. If such a consumable grinding wheel is to be stable in continuous use, the requirement of static strength substantially with certain cost portion of the consumable support disk on the whole consumable grinding wheel is relatively high and provides primarily reason for considerations to reduce the cost portion of the consumable support disc can significantly , In the case of bayonet locks of the present type, the aim is to reduce the cost portion of the consumable carrier disk on the consumable grinding wheel and to assign the static strength to a large part of a clamping disk, which is permanently connected as a non-consumable part with the grinding machine or at least connectable with this is. After consumption of the abrasive is then attached to the same clamping disc a new consumable grinding wheel, is attached to the abrasive on a consumable support plate, via a bayonet lock.
Es ist an sich bekannt, einen solchen Bajonettverschluß zwischen Tragscheibe und Aufspannscheibe zwischen den Mantelflächen radial innen angeordneter vorstehender Zylinderstutzen auszubilden (z.B.
Bajonettverschlüsse an gegeneinander durch eine relative Drehbewegung zu verriegelnden Bauteilen, hier der Aufspannscheibe und der Tragscheibe, haben stets (erste) Bajonettverschlußelemente, die miteinander im gegeneinander verriegelten Zustand in einen hintergreifenden formschlüssigen Bajonettverschlußeingriff kommen. Bei dem bekannten Bajonettverschluß, von dem der Oberbegriff des Anspruchs 1 ausgeht, verjüngt sich während der Relativdrehung von Aufspannscheibe und Tragscheibe in den schließlich verriegelten Bajonettverschlußeingriff die axiale relative Führung von Aufspannscheibe und Tragscheibe so, daß bei verriegeltem Bajonettverschlußeingriff die Tragscheibe auf der Aufspannscheibe axial aufgespannt gehalten ist. Zur Fixierung des verriegelten Bajonettverschlußeingriffs dienen in Umfangsrichtung an der frontalen Stirnfläche der Aufspannscheibe und an der rückseitigen Stirnfläche der Tragscheibe zwischen den jeweiligen ersten Bajonettverschlußelementen eingeschachtelte zusammenwirkende zweite Bajonettverschlußelemente, die aber in der Relativstellung des verriegelten Bajonettverschlußeingriffs ihrerseits keine axiale Aufspannkraft ausüben, sondern lediglich eine Verdrehsicherung mit Eingriff von Zapfen und Rastloch darstellen.Bayonet locks on against each other by a relative rotational movement to be locked components, here the clamping disk and the support plate, always have (first) bayonet closure elements, which come together in the locked state in a trailing interlocking bayonet closure engagement. In the known bayonet lock, from which the preamble of claim 1 proceeds, during the relative rotation of the clamping plate and support plate tapers in the finally locked bayonet closure engagement, the axial relative guidance of clamping plate and support plate so that when locked bayonet closure engagement the support disc held axially clamped on the clamping plate is. To fix the locked bayonet closure engagement serve in the circumferential direction of the frontal face of the clamping disc and at the rear end face of the support plate between the respective first bayonet closure elements nested cooperating second bayonet closure elements, but in the relative position of the locked bayonet closure engagement in turn exert no axial clamping force, but only an anti-rotation Engagement of pins and Represent Rastloch.
Der Erfindung liegt die Aufgabe zugrunde, die ersten Bajonettverschlußelemente von den die Fertigung komplizierenden und nicht immer dauerbelastbaren Zusatzaufgaben des Aufspannens der Tragscheibe auf der Aufspannscheibe mindestens teilweise und möglichst ganz zu entlasten.The invention has for its object, at least partially and as completely as possible to relieve the first bayonet closure elements of the production complicated and not always durable load additional tasks of clamping the support plate on the clamping disk.
Diese Aufgabe wird bei einem Bajonettverschluß mit den Merkmalen des Oberbegriffs von Anspruch 1 durch dessen kennzeichnenden Merkmale gelöst.This object is achieved in a bayonet closure with the features of the preamble of claim 1 by its characterizing features.
In neuartiger Weise wird nach der Erfindung die technische Aufgabe, in der formschlüssig durch die ersten Bajonettverschlußelemente verriegelten Endstellung des Bajonettverschlußeingriffs die Tragscheibe auf der Aufspannscheibe axial aufzuspannen, mindestens teilweise und vorzugsweise gänzlich den zweiten Bajonettverschlußelementen zugewiesen. Es ist dabei möglich und sogar bevorzugt, die ersten Bajonettverschlußelemente gänzlich von der Funktion des Aufbringens einer axialen Aufspannkraft zwischen Tragscheiben/Aufspannscheibe zu entlasten und diese Funktion gänzlich den zweiten Bajonettverschlußelementen zuzuweisen, selbst wenn diese gemäß Anspruch 7 in Zusatzfunktion und nicht wie bei der
Den Ansprüchen 2 und 10 liegt die Idee zugrunde, erhabene und gegebenenfalls auch ihrer Art nach bruchgefährdete Bajonettverschlußelemente an der nicht verbrauchbaren Aufspannscheibe auszubilden, welche zur Gewinnung stabiler Strukturen relativ hohe Herstellungskosten rechtfertigt. Demzufolge wird auch gemäß Anspruch 14 die Aufspannscheibe zweckmäßig integral aus Metall oder einem hochfesten Kunststoff gefertigt. Im Grenzfall läßt sich dann die Tragscheibe ohne oder ganz ohne an ihrer rückseitigen Stirnfläche hervorragende Bajonettverschlußelemente formen; jedenfalls wird dadurch eine Stapelbarkeit der verbrauchbaren Schleifscheiben begünstigt.The
Die hintergreifenden Elemente der ersten Bajonettverschlußelemente sind axial auf Zug beansprucht. Eine besonders einfache Gestalt ist die Pilzform gemäß Anspruch 3, deren einfachste Formgebung durch einen zylindrischen Schaft mit einer Kreisscheibe als Kopf sein kann. Dies läßt sich stabil an der nicht dem Verschleiß unterliegenden Aufspannscheibe realisieren.The engaging elements of the first bayonet closure elements are claimed axially to train. A particularly simple shape is the mushroom mold according to
Derartige erste Bajonettverschlußelemente können besonders vorteilhaft mit den frei von Erhebungen gestaltbaren ersten Bajonettverschlußelementen an der Tragscheibe gemäß Anspruch 4 zusammenwirken. Dabei kann fakultativ im Sinne von Anspruch 5 eine Einsetzführung mit ausgeformt sein, die jedoch im später beschriebenen Ausführungsbeispiel nicht realisiert ist.Such first bayonet closure elements can cooperate particularly advantageously with the first bayonet closure elements which can be designed free from elevations on the carrier disk according to
Man könnte auch in einer Weise, die im Ausführungsbeispiel auch nicht realisiert ist, gemäß Anspruch 6 zwischen den zusammenwirkenden ersten Bajonettverschlußelementen einen Endanschlag ausbilden, welcher die Endstellen definiert, wenn die Tragscheibe relativ zur Aufspannscheibe in die Endstellung des Bajonetteingriffs gedreht wird. Einfacher zu realisieren und daher auch bevorzugt ist jedoch die schon oben angesprochene Verrastungsmöglichkeit gemäß Anspruch 7.One could also in a manner which is not realized in the embodiment, according to claim 6 between the cooperating first bayonet closure elements a Form end stop, which defines the end points when the support plate is rotated relative to the clamping plate in the end position of the bayonet engagement. However, it is simpler to realize and therefore also preferred the latching possibility already mentioned above according to
Die Verrastung nach Anspruch 7 fixiert die relative Winkelstellung der Tragscheibe auf der Aufspannscheibe in der Endstellung des Bajonettverschlußeingriffs. Zusätzlich sollte noch nach Anspruch 11 - mit den vorzugsweisen Weiterbildungen nach den Ansprüchen 12 und 13 - eine Sicherung gegen relative Translationsverschiebungen quer zur Achse von Tragscheibe und Aufspannscheibe realisiert sein.The latching according to
Gemäß Anspruch 15 ist die verbrauchbare Tragscheibe mitsamt den an ihr angeordneten Elementen der ersten und zweiten Bajonettverschlußelemente integral aus einem Kunststoff, vorzugsweise als Spritzgußteil, gefertigt.According to claim 15, the consumable support plate together with the elements arranged on it the first and second bayonet closure elements integrally made of a plastic, preferably as an injection molded part.
In einem solchen Fall kann man geringen Materialeinsatz mit hinreichend hoher Stabilität der Tragscheibe erreichen, wenn diese skelettartig aus Stegen aufgebaut ist, mit denen dann zweckmäßig auch die zugehörigen Elemente der ersten und zweiten Bajonettverschlußelemente realisiert sind.In such a case, one can achieve low material use with sufficiently high stability of the support disk, if this skeleton is constructed of webs with which then expediently the associated elements of the first and second bayonet closure elements are realized.
Es sind hier verschiedenerlei Realisierungsmöglichkeiten dieses Konzepts denkbar. Die Ansprüche 17 bis 21 beschreiben dabei eine praxisgerechte bevorzugte Möglichkeit.There are various possibilities of realization of this concept conceivable here.
Die Erfindung wird im folgenden anhand schematischer Zeichnungen an einem Ausführungsbeispiel noch näher erläutert.The invention will be explained in more detail below with reference to schematic drawings of an embodiment.
Es zeigen:
- Fig. 1a, 1b und 1c Ansichten einer verbrauchbaren Tragscheibe einer im ganzen verbrauchbaren Schleifscheibe, und zwar in Draufsicht auf die frontale Stirnseite, in perspektivischer Ansicht schräg von oben und in Seitenansicht,
- Fig. 2a, 2b und 2c Ansichten einer mit der Welle einer Schleifmaschine dauerhaft verbundenen oder verbindbaren und nicht zum Verbrauch vorgesehenen Aufspannscheibe, und zwar in Draufsicht auf die Rückseite, in perspektivischer Ansicht schräg von oben und in Seitenansicht, die mit der Tragscheibe gemäß den Fig. 1a, 1b und 1c über einen Bajonettverschluß koppelbar ist, und
- Fig. 2d das Detail A in den Fig. 2a und 2b im Schnitt nach der Linie B-B in Fig. 2a in einem vergrößerten Maßstab.
- 1a, 1b and 1c views of a consumable support disk of a consumable grinding wheel in the whole, in plan view of the frontal front side, in a perspective view obliquely from above and in side view,
- Fig. 2a, 2b and 2c views of a permanent connected to the shaft of a grinding machine or connectable and not intended for consumption clamping plate, in plan view of the back, in a perspective view obliquely from above and in side view, which is coupled to the support plate according to FIGS. 1a, 1b and 1c via a bayonet lock, and
- Fig. 2d, the detail A in Figs. 2a and 2b in section along the line BB in Fig. 2a on an enlarged scale.
Die Fig. 1a bis 1c zeigen eine dauerbeständige Aufspannscheibe 1, die integral aus Metall gefertigt ist. Zweckmäßig handelt es sich beispielsweise um ein Druckgußteil, wobei als Material sich insbesondere Aluminium oder eine Aluminiumlegierung anbietet. Alternativ kommt beispielsweise aber auch die Fertigung aus einem dauerbeständigen Kunststoff, z.B. PPT oder PPS, in Frage, wobei in diesem Fall die Herstellung als Spritzgußteil bevorzugt ist.Figs. 1a to 1c show a permanent-resistant clamping plate 1, which is made of metal integrally. Appropriately, it is for example a die-cast part, wherein as material in particular aluminum or an aluminum alloy is offered. Alternatively, however, the manufacture also comes from a durable plastic, e.g. PPT or PPS, in which case the production as an injection-molded part is preferred.
Der Hauptkörper der Aufspannscheibe 1 ist eine Ringscheibe 2, deren Außenrand eine sich in Richtung zur nicht dargestellten Schleifmaschine verjüngende Fase 3 aufweist. Rings um die frontale Stirnfläche 4 erstreckt sich im stetigen Anschluß an die Fase 3 ein zylindrisch umlaufender Außenrand 5 mit einer in einer gemeinsamen radialen Ebene liegenden ringförmigen planen Stützfläche 6. Radial weiter innen als die ringförmige frontale Stützfläche 4 ist die Ringscheibe 2 in einem sich in Richtung zur Schleifmaschine verjüngenden konischen Anschlußstutzen 7 fortgesetzt, wobei auch der innere Anschlußbereich zwischen dem Anschlußstutzen 7 und der frontalen Stirnfläche 4 als Fase 8 ausgebildet ist. Das der Schleifmaschine zugewandte Ende des Anschlußstutzens 7 ist durch eine Ringscheibe 9 abgeschlossen, in der eine axiale kreisrunde Öffnung 10 für die Montage der Aufspannscheibe 1 auf der ebenfalls nicht dargestellten Welle der Schleifmaschine vorgesehen ist.The main body of the clamping disk 1 is an
Über die frontale Stirnfläche 4 der Aufspannscheibe 1 sind in gleichmäßigen Winkelabständen hintergreifende erste Bajonettverschlußelemente 11 verteilt. Ohne Beschränkung der Allgemeinheit sind dabei vier solche Bajonettverschlußelemente 11 vorgesehen, von denen je eines jedem rechtwinkligen Winkelsegment zugeordnet ist. Die Bajonettverschlußelemente 11 haben dabei etwa gleichen radialen Abstand vom inneren und vom äußeren kreisförmigen Rand der frontalen Stirnfläche 4.About the
Die Bajonettverschlußelemente 11 sind pilzförmig mit einem Stamm 13, der die Form eines zylindrischen Stiftes hat, und einem Pilzkopf 14 geformt, der als auskragender flacher Ringflansch ausgebildet ist. Alternativ kommen auch andere nicht dargestellte Formgebungen des Stammes 13 und des Pilzkopfes 14 in Frage.The
Mit jeweils gleichen Winkelabständen und gleichartiger radialer Anordnung sind rings um die Achse der frontalen Stirnfläche 4 zwischen den hintergreifenden ersten Bajonettverschlußelementen 11 zweite Bajonettverschlußelemente 15 eingeschachtelt, welche in der gleichen Richtung wie die ersten Bajonettverschlußelemente 11 von der frontalen Stirnfläche 4 abstehen. Sie haben die Gestalt einer sich kreisbogenförmig um die Achse der frontalen Stirnfläche 4 erstreckenden Auflauframpe, deren beiden Endbereiche jeweils als Auflaufschräge 16 ausgebildet sind. Die Auflaufschrägen 16 erheben sich stetig aus der radialen Ebene der frontalen Stirnfläche 4 bis in einen zentralen Scheitelbereich 17. Die beiden radial äußeren und radial inneren Ränder der Auflauframpe sind jeweils als Durchbrüche 18 bzw. 19 ausgebildet.With each equal angular intervals and similar
Die Fig. 1a bis 1c zeigen eine verbrauchbare Tragscheibe 21 einer im ganzen verbrauchbaren Schleifscheibe. In nicht dargestellter Weise ist Schleifmittel, das sich beim Schleifen verbraucht, auf der dem Betrachter der Fig. 2a und 2b abgewandten frontalen Stirnfläche aufgebracht. Die Tragscheibe 21 wird entsorgt, soweit das Schleifmittel verbraucht ist. Es wird jede bekannte Art der Aufbringung von Schleifmittel in Betracht gezogen. Insbesondere, aber nicht ausschließlich, werden die Fälle in Betracht gezogen, bei denen das Schleifmittel entweder als zusammenhängende Scheibe oder in sich in Umfangsrichtung überlappenden Schleiflamellen aufgebracht ist. Dabei können mannigfache Variationen im Material und im Aufbau vorgesehen sein, z.B. ein- oder mehrschichtiger Aufbau, mit und ohne Armierungseinlage usw. Die Tragscheibe 21 ist zweckmäßig mitsamt ihren nachfolgend beschriebenen Bestandteilen integral aus einem Kunststoff gefertigt, vorzugsweise als Spritzgußteil.FIGS. 1a to 1c show a
Die Tragscheibe 21 zeigt einen skelettartigen Aufbau aus Stegen. Ihr Hauptkörper weist dabei zwei konzentrische Ringstege 22 und 23 auf, die gegeneinander durch nachfolgend noch näher betrachtete Zwischenstege versteift sind.The
Eine Besonderheit besteht dabei darin, daß die Elemente der ersten und zweiten Bajonettverschlußelemente, welche mit den Bajonettverschlußelementen 11 und 15 an der Aufspannscheibe 1 zusammenwirken, von der skelettartigen Stegstruktur mit gebildet sind.A special feature consists in the fact that the elements of the first and second bayonet closure elements, which cooperate with the
Zunächst sind die beiden Ringstege 22 und 23 durch über den Umfang verteilte radiale Verbindungsstege 24 und 25 steif miteinander verbunden, wobei Verbindungsstege 24 oder 25 gleicher Numerierung jeweils mit gleichen Winkelabständen untereinander über den Umfang der Tragscheibe 21 verteilt sind. Die Verbindungsstege 25 sind dabei in der einen Winkelrichtung mit etwa einem Drittel und in der anderen Winkelrichtung, in Fig. 2a im Uhrzeigersinn, mit etwa zwei Drittel des Winkelabstands der Verbindungsstege 24 angeordnet. Die Anzahl der Verbindungsstege 24 ist dabei gleich der Anzahl der ersten Bajonettverschlußelemente 12 an der Aufspannscheibe 1 und die Anzahl der Verbindungsstege 25 gleich der Anzahl der zweiten Bajonettverschlußelemente 15 an der Aufspannscheibe 1.First, the two ring lands 22 and 23 are rigidly connected to each other by radial connecting
Im radialen Zwischenraum zwischen den Ringstegen 22 und 23 sind Ringstegabschnitte 26a und 26b eingeschachtelt, welche die radialen Verbindungsstege 24 und 25 kreuzen und sich in Umfangsrichtung ergänzen.In the radial gap between the
Mit den radialen Verbindungsstegen 25 kreuzen sich die Ringstegabschnitte 26b, während sich die Ringstegabschnitte 26a mit den radialen Verbindungsstegen 24 kreuzen.With the
Beiderseits des Kreuzungsbereichs der radialen Verbindungsstege 25 mit den Ringstegabschnitten 26b sind letztere durch je einen Zusatzsteg 27 gegen den radial inneren Ringsteg 22 der beiden konzentrischen Ringstege 22 und 23 abgestützt.On both sides of the crossing region of the
An der in Fig. 2a dargestellten Rückseite der Tragscheibe 21 sind dabei erste und zweite Bajonettverschlußelemente, welche mit den ersten und zweiten Bajonettverschlußelementen 11 und 15 der Aufspannscheibe 1 als Bajonettverschluß zusammenwirken, wie folgt an der stegartigen Skelettstruktur der Tragscheibe 21 gebildet.At the back of the
Die ersten Bajonettverschlußelemente 28 der Tragscheibe 21 sind dadurch gebildet, daß die Ringstegabschnitte 26b eine hinterschnittene Nut 29 bilden, die in der Darstellung von Fig. 2a entgegen dem Uhrzeigersinn offen und im Uhrzeigersinn geschlossen ausgebildet ist. Am offenen Ende erfolgt dabei eine Abstützung des radial innen liegenden Schenkels der hinterschnittenen Nut 29 durch einen radialen Stegstummel 30 zwischen dem Ringstegabschnitt 26b und dem radial innen liegenden Ringsteg 22.The first
Der Ringstegabschnitt 26b ist dann unter Bildung des radial innen liegenden Schenkels der hinterschnittenen Nut 29 im Uhrzeigersinn fortgesetzt, um anschließend unter Bildung des Abschlusses der hinterschnittenen Nut 29 U-förmig gekrümmt nach außen zu verlaufen, wo entgegengesetzt dem Uhrzeigersinn unter Bildung des radial außen liegenden Schenkels der hinterschnittenen Nut 29 eine Rückwärtserstreckung des Ringstegabschnitts 26b erfolgt. Dieser endet am offenen Ende der hinterschnittenen Nut 29, wo der Ringstegabschnitt 26b über einen weiteren radialen Stegstummel 31 in den äußeren Ringsteg 22 übergeht.The annular land portion 26b is then continued to form the radially inner leg of the undercut
Die Ergänzung der Ringstegabschnitte 26a und 26b in Umfangsrichtung erfolgt dabei folgendermaßen:
- In Fig. 2a im Urzeigersinn
schließen die Ringstegabschnitte 26a jeweils außen an den Scheitel der U-förmigen Krümmung der Ringstegabschnitte 26a an, welche den Abschluß der hinterschnittenenNut 29 bildet. Das im Uhrzeigersinn andere Ende des jeweiligen Ringstegabschnittes 26a setzt sich dann in den radial innen liegenden Schenkel der nächsten hinterschnittenenNut 29 fort, der wiederumvon einem Ringstegabschnitt 26a gebildet ist.
- In Fig. 2a in the clockwise direction, the
Ringstegabschnitte 26a each outside close to the apex of the U-shaped curvature of theannular web portions 26 a, which forms the end of the undercutgroove 29. The clockwise other end of the respectiveannular web portion 26a then continues in the radially inner leg of the next undercutgroove 29, which in turn is formed by aring land portion 26a.
Die Hinterschneidung der hinterschnittenen Nut 29 ist dadurch erzielt, daß im inneren Bereich der hinterschnittenen Nut 29 deren Einführöffnung durch einen flanschartigen Überhang 32 am hinteren Rand des Ringstegabschnitts 26b verengt ist. Der Pilzkopf 14 der ersten Bajonettverschlußelemente 11 an der Aufspannscheibe 1 kann in der verriegelten Stellung des Bajonettverschlusses diesen Überhang untergreifen.The undercut of the undercut
Die beiden Stegstummel 30 und 31 liegen auf dem gleichen Radius. Außerdem sind etwa gleiche Winkelabstände der Folge von Stegstummeln 30, 31, radialen Verbindungsstegen 24 und radialen Verbindungsstegen 25 in Umfangsrichtung vorgesehen.The two stub stems 30 and 31 are at the same radius. In addition, approximately equal angular intervals of the sequence of
Die zweiten Bajonettverschlußelemente 33 der Tragscheibe 21 sind von dem jeweils hinteren Außenrand der Ringstegabschnitte 26a im Bereich A der Fig. 2a und 2b gebildet, und zwar gemäß Fig. 2d dort und in Nachbarschaft davon, wo eine Kreuzung mit den radialen Verbindungsstegen 25 erfolgt.The second
Bei diesen zweiten Bajonettverschlußelementen 33 bewirkt das Zusammenwirken des freien Randes der Ringstegabschnitte 26a mit der Rampenform der zweiten Bajonettverschlußelemente 15 an der Aufspannscheibe 1 eine axiale Aufspannung der Tragscheibe 21 auf der Aufspannscheibe 1. Die relative Winkelstellung dieser beiden Teile 1 und 21 in der verriegelten Endstellung des Bajonettverschlusses erfolgt dabei nicht zwingend durch Anschlag des Stammes 13 am geschlossenen Ende der hinterschnittenen Nut 29, - obwohl eine solche Verriegelung durchaus als Alternative oder zusätzliche Maßnahme zweckmäßig sein kann -, sondern dadurch, daß gemäß Fig. 2d der Ringstegabschnitt 26a unter Bildung einer Rastmulde 34 etwas zurückgesetzt ist. Bei Einrasten der Auflauframpe an der Aufspannscheibe 1 in dieser Rastmulde 34 erfolgt die gewünschte Verriegelung der relativen Winkelstellung von Aufspannscheibe 1 und Tragscheibe 21, während andererseits im wesentlichen die durch das Zusammenwirken von Auflauframpe und Ringstegabschnitt 26a erzeugte axiale Aufspannkraft der Tragscheibe auf der Aufspannscheibe überwiegend beibehalten wird.In these second
Der radial innen liegende Ringsteg 22 begrenzt in der Tragscheibe 21 mindestens an deren Rückseite eine zentrale Öffnung, die sich im Anschlußstutzen 7 der Aufspannscheibe 1 fortsetzt.The radially inner
Der radial außen liegende Ringsteg 23 trägt an seiner Frontseite einen äußeren Ringflansch 35. Auf diesen kommt der Außenrand 5 der Aufspannscheibe 1 bei der Aufspannung zu liegen. Außerdem umgreift dabei der Außenrand 5 den äußeren Ringsteg 23 so, daß eine sonst denkbare Translationsverschiebung der Tragscheibe 21 in bezug auf die Aufspannscheibe 1 quer zur Achsrichtung blockiert ist.The radially outer
Am radialen Innenrand des Ringstegs 22 ist schließlich eine Fase 36 vorgesehen. Desgleichen ist die freie rückwärtige Kante des Ringstegs 23 mit einer außen liegenden Fase 37 ausgebildet.At the radial inner edge of the
Nicht zeichnerisch dargestellte Varianten des oben beschriebenen Bajonettverschlusses sind zweckmäßig folgende:
- Statt der Erstreckung der frontalen Stirnfläche 4 der Aufspannscheibe 1 in seiner radialen Ebene kann auch eine von der Fase 8 aus zurückfliegende Erstreckung vorgesehen sein, und zwar rotationssymmetrisch geradlinig oder gewölbt. Die rückseitige Stirnfläche der Tragscheibe 21 ist dann dementsprechend komplementär zu formen.
- Instead of the extension of the
frontal end face 4 of the clamping plate 1 in its radial plane, an extension extending back from thechamfer 8 can also be provided, namely in a rotationally symmetrical straight line or curved. The rear end face of thesupport disk 21 is then correspondingly shaped to be complementary.
Claims (21)
- Bayonet-type locking arrangement between a consumable grinding disc, in which the grinding material is applied to the front face of a carrier disc (21), and a supporting plate (1) which is or can be permanently connected to the shaft of a grinding machine and to whose front face (4) the rear face of the carrier disc can be clamped by means of the bayonet-type locking arrangement and can be locked in at least one direction of relative rotation of grinding disc and supporting plate,
on the front face of the supporting plate, around its axis, there being distributed first bayonet-type locking elements (11) which enter into a bayonet-type locking engagement engaging behind respectively associated first bayonet-type locking elements (28) which are distributed on the rear face of the carrier disc, around its axis, and
on the front face of the supporting plate, around its axis, interspersed in between the first bayonet-type locking elements, there being distributed second bayonet-type locking elements (15), which enter into a locking engagement with respectively associated second bayonet-type locking elements (33), which are distributed on the rear face of the carrier disc, around its axis, interspersed between the respective associated first bayonet-type locking elements,
the locking engagement being in particular a latching engagement,
characterized in that, in the locked position of the bayonet-type locking arrangement, the second bayonet-type locking elements (15) of the supporting plate (1), interacting with the second bayonet-type locking elements (33) of the carrier disc (21), clamp the first bayonet-type locking elements (11) of the supporting plate (1) with a force fit against the associated first bayonet-type locking elements (28) of the carrier disc (21). - Bayonet-type locking arrangement according to Claim 1, characterized in that the first bayonet-type locking elements (11) on the supporting plate (1) are those elements which engage behind the first bayonet-type locking elements (28) assigned to the carrier disc (21).
- Bayonet-type locking arrangement according to Claim 1 or 2, characterized in that the engaging elements (11) of the first bayonet-type locking elements have a mushroom shape (13, 14).
- Bayonet-type locking arrangement according to one of Claims 1 to 3, characterized in that the engaged elements of the first bayonet-type locking elements are undercut grooves (29), which extend in sections around the axis of the bayonet-type locking arrangement, are open in their one end region for the insertion of the engaging elements of the first bayonet-type locking elements and, in their other end region, are formed as an undercut groove, behind whose undercut engagement takes place.
- Bayonet-type locking arrangement according to Claim 4, characterized in that the opening of the undercut groove (29) through which the engaging elements (11) of the first bayonet-type locking elements reach tapers towards their end as an insertion guide for the engaging elements.
- Bayonet-type locking arrangement according to either of Claims 4 and 5, characterized in that the end of the undercut groove (29) is formed as a stop limiting the insertion movement of the engaging elements (11).
- Bayonet-type locking arrangement according to one of Claims 1 to 6, characterized in that a latching arrangement (15, 34) with a form fit is formed between the second bayonet-type locking elements.
- Bayonet-type locking arrangement according to one of Claims 1 to 7, characterized in that one element of the second bayonet-type locking elements (15) is formed as a run-on ramp and the respectively associated second element is formed as a rising supporting surface (26a).
- Bayonet-type locking arrangement according to Claims 7 and 8, characterized in that a latching engagement is formed in the angular direction between a latching lug or a vertex region (17) on the run-on ramp and a latching depression (34) on the supporting surface.
- Bayonet-type locking arrangement according to one of Claims 1 to 9, in particular according to Claim 8 or 9, characterized in that elevated elements of the second bayonet-type locking elements (15), preferably the run-on ramps, are formed on the supporting plate (11), and recessed elements (34) of the second bayonet-type locking elements (33) are formed on the carrier disc (21).
- Bayonet-type locking arrangement according to one of Claims 1 to 10, characterized in that the supporting disc (1) and the carrier disc (21) are in locking engagement (5, 23) resisting lateral relative translational displacements.
- Bayonet-type locking arrangement according to Claim 11, characterized in that the carrier disc (21) or preferably the supporting disc (1) has a cylindrical circumferential outer edge (5), in which the main body of the other of these two parts engages with a form fit (with 23).
- Bayonet-type locking arrangement according to Claim 12, characterized in that the main body has a circumferential annular flange or outer flange (35) which is superposed on the outer edge (5).
- Bayonet-type locking arrangement according to one of Claims 1 to 13, characterized in that the supporting disc (1), together with the elements (11, 15) of the first and second bayonet-type locking elements that are mounted on it, is fabricated integrally from metal, preferably as a pressure die-casting, for example of aluminium or an aluminium alloy.
- Bayonet-type locking arrangement according to one of Claims 1 to 14, characterized in that the carrier disc (21), together with the elements (28, 33) of the first and second bayonet-type locking elements that are mounted on it, is fabricated integrally from a plastic, preferably as an injection moulding.
- Bayonet-type locking arrangement according to one of Claims 1 to 15, characterized in that the carrier disc (21) is constructed from webs in the manner of a skeleton.
- Bayonet-type locking arrangement according to Claim 16, characterized in that the carrier disc (21) has two concentric annular webs (22, 23), which are reinforced relative to each other by intermediate webs, with which the elements (28, 33) of the first and second bayonet-type locking elements of the carrier disc are also formed.
- Bayonet-type locking arrangement according to Claim 17 and one of Claims 1 to 16, characterized in that the rising supporting surface on the free edge in the direction of the supporting disc (1) is formed between the two concentric annular webs (22, 23) by annular web sections (26a) that are concentric with the two concentric annular webs (22, 23).
- Bayonet-type locking arrangement according to Claim 18, characterized in that the annular web sections (26a) are crossed in their central region by a radial connecting web (25) of the two concentric annular webs (22, 23) and are preferably supported obliquely at their respective end in the circumferential direction against the radially inner (22) of the two concentric annular webs (22, 23), in each case by an additional web (27).
- Bayonet-type locking arrangement according to Claim 18 or 19, characterized in that the annular web sections, seen in the circumferential direction of the carrier disc (21), form at their one end a continuation web which, preferably crossing a radial supporting web (24) between the two concentric annular webs (22, 23), merges into the end web structure of the engaged elements (29) of the first bayonet-type locking elements (28) and, at its other end, merges into a lateral web (31) of the web structure on the inlet side of the undercut elements of the first bayonet-type locking elements.
- Bayonet-type locking arrangement according to Claim 20, characterized in that, in the imaginary radial transition plane, the radially outer lateral web of the web structure on the inlet side of the undercut elements (29, 32) is supported against the radially outer (23) of the two concentric annular webs (22, 23) by a first intermediate web (31) running radially, and the radially inner lateral web of the web structure on the inlet side of the undercut elements is supported against the radially inner (22) of the two concentric annular webs by a second intermediate web (30) running radially.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20108986U DE20108986U1 (en) | 2001-05-29 | 2001-05-29 | Bayonet lock between a consumable grinding wheel and a clamping plate |
| DE20108986U | 2001-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1262283A1 EP1262283A1 (en) | 2002-12-04 |
| EP1262283B1 true EP1262283B1 (en) | 2007-07-11 |
Family
ID=7957476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02010336A Expired - Lifetime EP1262283B1 (en) | 2001-05-29 | 2002-05-07 | Bayonet-type locking arrangement for a consumable grinding disk and a supporting plate |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1262283B1 (en) |
| AT (1) | ATE366643T1 (en) |
| DE (2) | DE20108986U1 (en) |
| DK (1) | DK1262283T3 (en) |
| ES (1) | ES2288530T3 (en) |
| PT (1) | PT1262283E (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173250A1 (en) | 2018-03-04 | 2019-09-12 | Osborn, Gmbh | Rotary surface finishing implement with tool mounting adapter |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10218196B4 (en) | 2002-04-24 | 2017-06-29 | Robert Bosch Gmbh | Insert tool and quick-release system with a rotating drivable, hub-shaped hub |
| DE202007014470U1 (en) * | 2007-10-16 | 2008-02-07 | Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg | Grinding wheel for a machining of objects, in particular stones, bricks or the like, or wheel body or slip ring or closure piece for such a grinding wheel |
| DE102008015029A1 (en) * | 2008-03-17 | 2009-09-24 | Flex-Elektrowerkzeuge Gmbh | Carrier disk for drive shaft of surface processing machine, has disk-side connecting devices whose disk-side parts and front side are formed, such that carrier disk is attached with front side of drive shaft |
| DE202015106711U1 (en) | 2015-12-09 | 2017-03-10 | Kolthoff Gabrovo Eood | Tool for surface finishing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2764853A (en) | 1956-03-12 | 1956-10-02 | Carm P Rhees | Mounting head for grinding polishing, and featheredging tools |
| DE4430229A1 (en) * | 1994-08-25 | 1996-02-29 | Eisenblaetter Gerd Gmbh | Overlapping leaf abrasive disc esp. for attachment to grinder or sander |
| DE29913046U1 (en) * | 1999-07-30 | 2000-03-02 | EFCO Maschinenbau GmbH & Co. KG, 52353 Düren | Grinding wheel |
-
2001
- 2001-05-29 DE DE20108986U patent/DE20108986U1/en not_active Expired - Lifetime
-
2002
- 2002-05-07 DE DE50210440T patent/DE50210440D1/en not_active Expired - Lifetime
- 2002-05-07 ES ES02010336T patent/ES2288530T3/en not_active Expired - Lifetime
- 2002-05-07 DK DK02010336T patent/DK1262283T3/en active
- 2002-05-07 AT AT02010336T patent/ATE366643T1/en active
- 2002-05-07 PT PT02010336T patent/PT1262283E/en unknown
- 2002-05-07 EP EP02010336A patent/EP1262283B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173250A1 (en) | 2018-03-04 | 2019-09-12 | Osborn, Gmbh | Rotary surface finishing implement with tool mounting adapter |
Also Published As
| Publication number | Publication date |
|---|---|
| PT1262283E (en) | 2007-08-16 |
| ES2288530T3 (en) | 2008-01-16 |
| DE20108986U1 (en) | 2001-08-02 |
| DK1262283T3 (en) | 2007-11-12 |
| DE50210440D1 (en) | 2007-08-23 |
| EP1262283A1 (en) | 2002-12-04 |
| ATE366643T1 (en) | 2007-08-15 |
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