Abstract:
A support rod (3) vertically movably inserted into a housing (2) is urged upward by an advancing spring (4). An annular piston (6) is inserted between a barrel portion (2c) of the housing (2) and an outer peripheral surface of the support rod (3). A collet (10) externally fitted onto a holding and fixing portion (C) of the support rod (3) is received by a lower end wall (2b) of the housing (2). A tapered transmission member (17) externally fitted onto the collet (10) is urged downward by a holding spring (22). The urging force clamps the support rod (3) at a predetermined height through the collet (10).
Abstract:
Werkzeughalter (1) mit einem Grundkörper (2) zum Ankuppeln des Werkzeughalters (1) an die Spindel einer Werkzeugmaschine und einem damit verbundenen Spannabschnitt (3) zum Spannen eines Werkzeugs, dadurch gekennzeichnet, dass der Werkzeughalter (1) mindestens einen einstückig urgeformten Abschnitt aufweist, der in seinem Inneren eine oder mehrere Kavitäten (9) aufweist, die eine Enklave in dem urgeformten Abschnitt bilden.
Abstract:
A cutting tool (101) includes a chuck (112), a compressible conical collet (102) and a lock nut (100) for locking the collet (102). The cutting tool lock nut (100) has a nut portion (116) with a threaded portion (122) for threading with the chuck (112), and a locking portion (125) with a collet-locking surface (128) formed with angled coolant grooves (130) thereon. The collet-locking surface (128) presses on the collet head, thereby compressing it to grip a tool shank (108) in a collet bore (106) thereof. The locking portion (125) presses only against a peripheral surface (109) of the collet head, such that the lock nut is (100) suitable for locking collets with different bore diameters. When the chuck (112) is provided with a coolant fluid, the coolant fluid flows through the chuck (112) and through the collet (102) towards the locking portion, passing through the coolant grooves (130) between the locking portion (125) and the collet head, and sprayed towards a location along the tool shank (108).
Abstract:
A bi-directional quick change tool-less lever and wedge actuated collet chuck, a system and/or a method provide symmetrical tool bit shank holding pressure before, during and after operation of a rotary-style power tool. The collet chuck is attached to and/or is integrated with high speed, variable speed and/or low speed rotary-style power tools, such as, for example, electrically driven rotary-style power tools and/or pneumatically-driven rotary-style power tools. The collet chuck provides tool-less automatic and/or tool-less manual tightening of the collet around a shank of an accessory for the rotary-style power tool. The collet chuck, the system and/or the method provide tool-less manual loosening of the collet for accessory replacement.
Abstract:
The invention relates to a high-precision clamping device (1a) for tools in machine tools of the conventional type and to a collet chuck (7a), a base (2a) and a tensioning nut (10a). The invention also relates to a chuck key for tightening the locknut (10a) without radial stress. The clamping device (1a) according to the invention is characterized by a substantially improved runout accuracy, torsional rigidity of the collet chuck (7a) and rigidity of the tool clamped therein.
Abstract:
Die vorliegende Erfindung betrifft eine hochgenaue Spannvorrichtung (1a) für Werkzeuge in Werkzeugmaschinen entsprechend dem herkömmlichen Typ nach ISO 15488 sowie eine Spannzange (7a), einen Grundkörper (2a) und eine Spannmutter (10a). Weiterhin wird ein Spannschlüssel zum querkraftfreien Anziehen der Spannmutter (10a) angegeben. Die Spannvorrichtung (1a) zeichnet sich vor allem durch eine wesentlich verbesserte Rundlaufgenauigkeit, Torsionssteifigkeit der Spannzange (7a) und Steifigkeit des darin gespannten Werkzeugs aus.
Abstract:
Gegenstand der Erfindung ist eine Vorrichtung zur Betätigung der Spannzange einer Fräs- und Bohrspindel, die einen auf das Ende der Spannstange (2) einwirkenden Stössel (8) und eine mit dem Stössel kinematisch gekoppelte Antriebseinheit zum Bewegen des Stössels in seiner Längsachse aufweist. Zum Erhalt einer hohen Zuverlässigkeit auch bei sehr schnellen Öffnungs- und Schliefssvorgängen mit technisch einfachen kostengünstigen Mitteln enthält erfindungsgemäss die Antriebseinheit einen Elektromotor (12) und einen auf den Stössel einwirkenden Kurventrieb (4, 5), der zweckmässig als auf das Ende der Spannstange (2) einwirkender Drehnocken (4) ausgebildet ist.
Abstract:
The invention relates to a sealing device which is provided with an annular circumferential groove (7) that runs in a preceding sealing washer (5) and with an O-ring (8) disposed in said groove. Width and depth of said groove are larger than the cross-section of the O-ring so that the sealing body can be axially moved in the groove and is forced against the wall of the groove and the tool shank (1) by the inner pressure.
Abstract:
A rotary power tool (10) is provided having a remotely actuated chuck device (12). The chuck (12) is mounted onto the end of a drive spindle that extends from the casing (14) of the power tool (10). The chuck (12) includes an outer sleeve member (22) that is axially movable relative to the drive spindle between a gripping position and a release position. A sleeve actuating device (30) is provided having a first member (28) engaged with the outer sleeve member (22) and which extends generally radially outward from the drive spindle or chuck (12). The first member (28) is movable in a direction so as to move the outer sleeve member (22) between the gripping position and the release position.
Abstract:
The invention concerns a device (10) for tensing tools provided with a spring chuck, such as mounted grinding wheels and pins, for manually controlled machines and preferably with compressed air and flexible shafts. Said device comprises an internal spring chuck (12) capable of being driven in rotation and an external conical sleeve (11) capable of being driven in rotation, which can be mutually displaced axially so as to tense the tool in the spring chuck. In order to be able to tense tools, including manually controlled machines, flexible shafts of small size and the like, without using any instrument and to attain, nevertheless, a considerable clamping force for the tool concerned, elements with centrifugal force (41) are provided whereof the radial movement produces an axial movement of the spring chuck (12) or of the conical sleeve (11).