Abstract:
Pressvorrichtung (1) zur relativen axialen Verschiebung zweier koaxial zueinander angeordneter und nur mittels hohem Pressdruck gegeneinander verschiebbarer Teile, wie beispielsweise Spannzangen oder -hülsen, in entsprechende Bohrungen von Werkzeug- bzw. Spannzangenhaltern. Die Vorrichtung besitzt ein die zu pressenden Teile koaxial umfassende äusseres Gehäuse (1,2), welches entlang einer Axialebene aufklappbar ist. In das Gehäuse (1,2) sind Einschubhälften (6,7,8) einsetzbar, die jeweils zwei feste Platten (6,7) mit Eingriffkanten für den Eingriff an einem der zu pressenden Teile und eine axial bewegliche Pressplatte (8) mit einer Eingriffkante für den Eingriff an dem zweiten zu pressenden Teil umfassen.
Abstract:
Die Erfindung betrifft eine Spannmutter zur auswechselbaren Aufnahme einer Spannzange (12) mit einem Ausziehlappen (21) zum Lösen der Spannzange (12) aus einer Spannzangenaufnahme, wobei dem Ausziehlappen (21) zumindest eine lösbare Rastverbindung (24) zur Fixierung der Spannzange (11) in einer Halteposition (19) zum Spannzangenaufnahmebereich (14) zugeordnet ist.
Abstract:
A clamping device for clamping a member to a housing includes a sleeve unit carried by the housing and having an open end formed with a tapered inner surface; and a chuck unit receivable within the open end of the sleeve unit, the chuck unit having an open end which is radially contractible for receiving and clamping the member. The chuck unit is movable axially in one direction to a clamping position, or in the opposite direction to a releasing position. The sleeve unit and chuck unit include interengaging elements such that rotation of the sleeve unit in opposite directions relative to the chuck unit moves the chuck unit to its clamping and releasing positions, respectively. A spring normally urges the sleeve unit to its clamping position. A manual operator rotates the sleeve unit in the opposite direction to move the chuck unit to its releasing position.
Abstract:
Die Erfindung betrifft ein Spannfutter, dessen Spannkraft werkstück- und werkstoffabhängig für beliebige Durchmesser einstellbar ist, das die erforderliche Spannsicherheit des Werkstücks und eine hohe Fixiergenauigkeit bei geringen Rüstzeiten gewährleistet. Erfindungsgemäß sind dazu im Außengehäuse des Spannfutters ein Schiebeglied in Form einer Stellbüchse (3), ein Tellerrad (4), ein Ritzel (5) und ein Segmentspannkopf (6) angeordnet, wobei das Tellerrad (4) und das Ritzel (5) ein Kegelradgetriebe bilden, das über eine Gewindepaarung (7), gebildet aus einem Innengewinde im Tellerrad (4) und einem Außengewinde an der Stellbüchse (3), mit der Stellbüchse (3) formschlüssig gekoppelt ist.
Abstract:
A collet assembly for a tool comprising a collet nut (50) rotatably connectable to the tool; a collet (60) operatively connectable to the collet nut (50); and a collet wrench (23) movably connected with the tool and engageable with the collet nut (50) for tightening and loosening the collet (60).
Abstract:
A quick setting and release actuator (10) for cooperating with an axially movable chuck for holding a tubular workpiece (24) in fixed position includes an anchor member (12) that is fixed relative to a housing of a machine tool (20) and a thrust member (42) carried by a pivotally mounted carrier member (38) that pivots towards and away from the anchor member (12) to drive the thrust member (42) into engagement with the end wall (44) of a multi-segment collet (26) to cause the collet (26) to ride along its segment bearing surfaces (30) to engage the periphery of the workpiece (24) to be retained in the machine tool (20). Thrust member (42) may be pivotally mounted by a pivot connection (48) on the carrier (38) so that the thrust member (42) will align itself with the end wall (44) of the collet (26) even when the carrier (38) is not precisely parallel with the collet end wall (44).
Abstract:
A chuck for a cutting tool, which facilitates exchange of a collet. A fastening collar (12) is threaded onto an outside of a chuck cylinder (14), and is formed inside thereof with a guide groove (24) which comprises a deep groove (24a) and a shallow groove (24b). Received axially slidably in the chuck cylinder (14) is a drive shaft (16), from which an ear shaft (26a) laterally extends to be fitted into the guide groove (24). A collet (20) is detachably mounted to a tip end of the drive shaft (16). The fastening collar (12) is turned so as to guide the ear shaft (26a) to a position other than the deep groove (24a) in the guide groove (24), thereby lifting the drive shaft (16) for supporting the collet (20). Also, the fastening collar (12) is turned so as to guide the ear shaft (26a) into the deep groove (24a), thereby pushing the drive shaft (16) for dismounting the collet (20). Accordingly, only turning of the fastening collar (12) can mount and dismount the collet (20).
Abstract:
A push-type collet and seat assembly (10) has a collet (12) including an elongated cylindrical body (22) having a rear end (24), a forwardly tapered front end (26), an opening (30) extending through the collet (12), and slots (32) extending through at least the front end (26) to divide the front end (26) into compressible portions (34). A workpiece (18) is inserted into the collet (12) and extends forwardly of the compressible portions (34). A seat (14) receives the collet (12) so that, when the front end (26) is forcibly wedged against the seat (14), the compressible portions (34) are squeezed to fix the workpiece (18) relative to the collet (12). A stop (16) is disposed forwardly of the seat (14) and adapted to receive the workpiece front end (38) so that the stop (16) limits the forward movement of the workpiece (18). A drive (20) generally simultaneously moves the workpiece (18) against the stop (16) and moves the collet (12) against the seat (14), such that the workpiece (18) abuts the stop (16) prior to the collet (12) fixing the workpiece (18).
Abstract:
A centrifugal spindle is described comprising a hollow shaft (1) having a collet (2) at one end for gripping a tool shank (12) and a centrifugal loading means (3) housed within the shaft (1). The loading means comprises two coaxial pistons (4, 5) spaced from each other and linked by flexible connecting members (6) and intermediate bob weights (7). One piston (4) is secured axially to the hollow shaft (1) while the other piston is secured to the collet so that rotation of the shaft (1) causes the weights (7) to move radially outwards under centrifugal force to draw the piston (5) and collet (2) into the hollow shaft (1) gripping the tool shank (12). The collet may have spring loaded jaws forcing them into the closed position.