DE20102516U1

DE20102516U1 - Thread quick release device

Info

Publication number: DE20102516U1
Application number: DE20102516U
Authority: DE
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-13
Filing date: 2001-02-13
Publication date: 2001-08-16
Anticipated expiration: 2011-02-14

Description

Gewinde-Schnellspann-VorrichtungThread quick-clamping device

Beschreibung:Description:

In verschiedenen Bereichen der Metallverarbeitung werden Werkzeuge und Schleifkörper in Maschinen oder speziellen Haltern eingespannt.In various areas of metal processing, tools and grinding wheels are clamped in machines or special holders.

Bei herkömmlichen Spannvorrichtungen wird das Objekt durch eine stirnseitig am Schaft angebrachte Schraube gehalten. Je kleiner und vor allem dünner diese Objekte (in der Regel Scheiben) sind, desto aufwendiger ist es, diese z.T. auch empfindlichen Teile in einer Schraubenverbindung mit 10 und mehr Gewindegängen einzuspannen.In conventional clamping devices, the object is held by a screw attached to the front of the shaft. The smaller and thinner these objects (usually disks) are, the more complex it is to clamp these sometimes sensitive parts in a screw connection with 10 or more threads.

Ziel dieser Gewinde-Schnellspann-Vorrichtung ist es, durch einfaches Aufstecken den Halteteil an das zu Haltende Objekt (z.B. Scheibe) heranzuführen und erst dann durch Drehen des Halteteiles mit maximal einer Umdrehung die geforderte Spannung auf das Objekt aufzubringen.The aim of this threaded quick-clamping device is to bring the holding part up to the object to be held (e.g. disc) by simply plugging it on and only then to apply the required tension to the object by turning the holding part by a maximum of one revolution.

Erreicht wird dies, indem die Gewindegänge des Innengewindes der Haltevorrichtung (Fig. Ib) mit einer oder mehreren Nuten (Fig. 2a - 2d) in axialer Richtung versehen werden. Entsprechend hierzu wird das Außengewinde des Gewindebolzens lediglich an diesen Teilen beibehalten (Fig. la). Die restlichen Flächen des Gewindebolzens werden bis zur tiefsten Schnittstelle der Gewindegänge zurückgenommen.This is achieved by providing the threads of the internal thread of the holding device (Fig. 1b) with one or more grooves (Fig. 2a - 2d) in the axial direction. Accordingly, the external thread of the threaded bolt is only retained on these parts (Fig. la). The remaining surfaces of the threaded bolt are reduced to the deepest interface of the threads.

Durch die Optimierung von Anzahl und Position der eingefrästen Nuten, sowie der Gewindesteigung kann der Schleifkörper (Scheibe o.a.) in weniger als einer Gewindeumdrehung eingespannt werden.By optimizing the number and position of the milled grooves, as well as the thread pitch, the grinding body (disc or similar) can be clamped in less than one thread revolution.

Die Abstreifsicherheit der Schraubenverbindung muss bei Verringerung der Abscherflächen durch die Vergrößerung der Einschraubtiefe ausgeglichen werden.The stripping resistance of the screw connection must be compensated for by reducing the shearing surfaces by increasing the screw-in depth.

Fig. la: Gewindebolzen mit 2-fach unterbrochenem Außengewinde Fig. la: Threaded bolt with double interrupted external thread

Fig. Ib: Gewindemutter mit 2-fach unterbrochenem Innengewinde Fig. Ib: Threaded nut with double interrupted internal thread

Fig. 2a: Innengewinde mit einer Nut Fig. 2a: Internal thread with a groove

Fig. 2b: Innengewinde mit zwei gleichmäßigen Unterbrechungen Fig. 2b: Internal thread with two even interruptions

Fig. 2c: Innengewinde mit drei unregelmäßigen Unterbrechungen Fig. 2c: Internal thread with three irregular interruptions

Fig. 2d: Innengewinde mit vier unregelmäßigen Unterbrechungen Fig. 2d: Internal thread with four irregular interruptions

Fig. 3: Einspannvorrichtung mit Steg am Korpus des Schrauben-Innengewindes Fig. 3: Clamping device with bar on the body of the screw internal thread

und Ansatzmöglichkeit für ein Hilfsteil am Gewindebolzen (Außengewinde)and attachment option for an auxiliary part on the threaded bolt (external thread)

Claims

1. Threaded quick-clamping device for fastening tools and grinding bodies, preferably disks of different thicknesses, characterized in that the threads of the internal screw thread ( 12 ) of the device are interrupted by a groove ( 13 ) in the axial direction, and the corresponding thread surfaces of the external thread ( 11 ) of the fastening bolt are retained and the remaining surfaces of the threads are removed down to their deepest point ( 10 ) so that the threaded nut (internal thread) and threaded bolt (external thread) can be inserted into one another ( Fig. 1a and 1b).

2. Thread quick-clamping device according to claim 1, characterized in that the threads of the screw internal thread are interrupted by two or more grooves ( Fig. 2b to 2d) in the axial direction, and the corresponding surfaces of the external thread of the fastening bolt are retained, with simultaneous removal of the remaining surfaces of the threads.

3. Thread quick-clamping device according to claims 1 and 2, characterized in that when more than one groove is provided between the individual recesses of the screw internal thread and the corresponding surfaces of the external thread of the screw bolt, the distances to each other are evenly distributed ( Fig. 2b and 2c)

4. Thread quick-clamping device according to claims 1 and 2, characterized in that when more than one groove is provided between the individual recesses of the screw internal thread and the corresponding surfaces of the external thread of the screw bolt, the distances to one another are each dimensioned differently ( Fig. 2d).

5. Threaded quick-clamping device according to claims 1 to 4, characterized in that the threaded nut (internal thread) and threaded bolt (external thread) can be rotated after insertion and thus tension can be applied to the object to be fastened.

6. Threaded quick-clamping device according to claims 1 to 5, characterized in that the threads of the screw nut (internal thread) and screw bolt (external thread) are manufactured with a larger pitch if required.

7. Thread quick-clamping device according to claims 1 to 6, characterized in that holding options such as webs ( 14 ), eyelets, heads or the like are attached to the body of the internal screw thread and to the body of the external screw thread in order to be able to tighten and loosen the clamping device by hand.

8. Thread quick-clamping device according to claims 1 to 6, characterized in that flat surfaces, Allen keys, grooves or the like are attached to the body of the internal screw thread and to the body of the external screw thread for the attachment of tools or auxiliary parts for tightening and loosening the clamping device.

9. Threaded quick-clamping device according to claims 1 to 8, characterized in that a shaft ( 17 ), coupling, thread, cone or the like are attached to the body of the threaded quick-clamping device in order to be able to use the quick-clamping device on conventional machines and devices ( Fig. 3).