Abstract:
A chuck-related arrangement ("a") having a main portion (1a) and chuck jaw portions coordinated with said main portion (1a) with associated clamping arrangements, wherein one surface (1e) of said main portion (1a) is provided with a plurality of tracks (1f, 1g, 1 h), adapted to displaceably carry chuck jaw portions (40). The invention proposes that each one of, and/or a chosen number of, clamping arrangements (3, 3', 3"), are individually to be secured to its means (10a, 10a', 10a") solidly secured to its basic chuck jaw portion exposing a rotational cooperation with an external chuck jaw portion (30, 30', 30") over a central axis of rotation ((30), (30'), (30")). Two or more of said external chuck jaw portions (30, 30') and their peripheral surfaces (30a, 30'a) are formed as one or more recesses (30ab, 30'ab) in order to cooperate opposed recesses to form clamping surfaces for a work piece ("A") and/or formed as one or more, said recesses (30ab, 30'ab) intermediately oriented, radially extending elevations (30ac), causing cooperative elevations (30ac, 30'ac, 30"ac) after a rotation to form direct clamping surfaces towards the work piece ("A"). The invention also refers to a method for assembling such a chuck-related arrangement ("a").
Abstract:
Die Erfindung betrifft eine Spannvorrichtung (1 ', 1 ") zum Einspannen eines entlang einer Bearbeitungsachse (6) zu bearbeitenden Werkstücks in eine die Bearbeitungsachse (6) umfassende Bearbeitungsmaschine, umfassend einen um die Bearbeitungsachse (6) drehbaren Spannkopf (3', 3") und an diesem angeordnete Spannelemente (5', 5"), bei der die Spannelemente (5', 5") am Spannkopf (3', 3") schwimmend angeordnet sind.
Abstract:
A method of manufacturing precision machined thin sleeves (30), as for engine cylinder liners in which the outside diameter of a thick walled tubular preform (26) is first machined to a finish size, and the preform (26) chucked in an encircling jaw chuck (10) on the preform outside diameter. The inside diameter is machined to a finish size having a desired wall thickness. The encircling surfaces (18, 20) of the chuck jaws (12, 14) create a slightly undersized circle to clamp the preform (26) to a predetermined degree.
Abstract:
A chuck (30) having a body (54) formed with a bore (60) having a fixed clamp segment (134) and a movable clamp segment (166) located in radial opposition. A pair of ribs (142) on fixed segment (134) and a single rib (172) on movable segment (166) extend radially inward and cooperate to clamp a shank (42). A sleeve (78) is positioned about body (54) and is movable axially relative thereto. A camming section (88) formed on an interior wall of sleeve (78) is captured between a head (124) of a pin (122) and a detent ring (132) to latch sleeve (78) in an unclamped mode. When shank (42) is inserted into bore (60), the forward end of the shank (42) engages pin (122) to move head (124) against camming section (88) which, in turn, moves section (88) past the detent ring (132). Thus, the sleeve (78) is unlatched and moved forward to compress a plurality of rollers (196) against fixed segment (134) and movable segment (166) to place sleeve (78) in a clamped mode, clamping shank (42).
Abstract:
Die vorliegende Erfindung betrifft eine Werkzeugmaschine (1) für die spanende Bearbeitung von Werkstücken (20), mit einer Werkstückauflage (19) zum Aufspannen des Werkstücks (20), einem mindestens entlang einer Achse bewegbaren Werkzeughalter (22) zum Halten eines Werkzeugs (24) für die Bearbeitung des Werkstücks (20) und Werkstückhalteeinheiten (30) zum Festhalten des Werkstücks (20) während der Bearbeitung, wobei die Werkstückhalteeinheiten (30) ausserhalb der in aufgespanntem Zustand von dem Werkstück (20) überdeckten Werkstückauflagefläche (34) der Werkstückauflage (19) angeordnet sind und jeweils ein Halteelement (31) zum Festhalten des Werkstücks (20) aufweisen. Damit auch Werkstücke grösseren Durchmessers bei ansonsten gleichen Abmessungen der Werkzeugmaschine bearbeitet werden können, ist erfindungsgemäss vorgesehen, dass die Haltelemente (31) jeweils im Wesentlichen parallel zur Werkstückauflagefläche (34) in Richtung auf das Werkstück (20), insbesondere in Richtung auf eine zentrale, senkrecht zur Werkstückauflagefläche (34) verlaufende Werkstückachse (29), zum Zentrieren und Festhalten des Werkstücks (20) verfahrbar sind.
Abstract:
A jig intended in use to hold a set of blanks of rod-like or wire-like form during machining, said jig having a body adapted to be mounted to a drive shaft for rotation of the body about an axis of rotation, the body having an outer portion (11) and an inner portion (13) wherein the inner and outer portions are capable of angular displacement relative to each other, the portions having opposed faces which are concentric and which define clamping faces which in use are intended to support the set of blanks such that their central axes are substantially parallel to the axis of rotation and at least one end extends axially beyond the body.
Abstract:
A rotary chuck (10) having a plurality of quick change jaw assemblies (12) each including a master jaw (14) carried by the chuck body (13) and a top jaw (16) releasably secured to the master jaw (14) by a single retaining fastener (48) having a shank including a frustoconical portion (50). A resilient roll pin (46) carried by the top jaw (16) bears upon and is compressed by the frustoconical portion (50). The compressed roll pin (46) exerts a resilient biasing force which acts upon the top jaw (16) to continuously urge an arcuate reference surface (38) on the top jaw into coengagement with a complementary reference surface (28) on the master jaw (14). A hardenend locking pin (46) carried by the jaw assembly (12) bears against a frustoconical head (50) on a locking fastener (48) threadably engaged with the master jaw (14) to prevent relaxation of the resilient biasing force provided by the roll pin (46) when the jaws clampingly engage the I.D. of a tubular workpiece.
Abstract:
Each top jaw (31) has a transverse recess (41) and slot (43), each extending completely through the top jaw (31), with the slot (43) connecting the recess (41) with the bottom side (33). Each top jaw (31) has two parallel threaded holes (51) extending from a rearward end (64) to the slot (43). Each of the holes (51) contains a set screw (53) and a loading pin (55). When the screw (53) is threaded into the hole (51), the screw (53) slidingly moves the pin (55) toward the contact face of the top jaw (31). When the contact faces apply clamping pressure to the workpiece, the recess (41) and slot (43) allow the forward end (38) of the top jaw (31) to deflect to remain in flush engagement with the workpiece. The slot (43) defines a rearward facing shoulder (63) on the forward end (38). The maximum deflection of the forward end (38) is limited by the loading pins (55) as the shoulder (63) will eventually bottom out on the loading pins (55).
Abstract:
Greifvorrichtung (2), insbesondere Parallel-oder Zentrischgreifer, mit wenigstens einer in einer Backenführung (8) verschiebbar geführten Backe (10,12), wobei die Backe (10,12) bzw. die Backenführung (8) beidseits jeweils wenigstens einen sich in Verschieberichtung (6) erstreckenden Führungssteg (16) aufweist, und wobei die Backenführung (8) bzw. die Backe(10,12) mit den Führungsstegen (16) zusammenwirkende Führungsnuten aufweisen,dadurch gekennzeichnet, dasswenigstens ein Führungssteg (16) einen ersten Gleitabschnitt (20), einen zweiten Gleitabschnitt (22) sowie einen zwischen den Gleitabschnitten (20, 22) liegenden Aussparungsabschnitt (24) aufweist, wobei der Aussparungsabschnitt (24) eine sich in Verschieberichtung (6) und dazu in Querrichtung (28) erstreckende Aussparung (26) zur Ausbildung eines Schmiermittelreservoirs aufweist, wobei die Aussparung (26) einen ersten Abschnitt (30) und einen zweiten Abschnitt (32) aufweist, wobei die jeweiligen Abschnitte (30, 32)in Querrichtung (28) von einem ersten freien Endseitenabschnitt (52) und einem zweiten freien Endseitenabschnitt (54) des Aussparungsabschnitts (24)begrenzt werden, und wobei die jeweiligen freien Endseitenabschnitte (52, 54) mit der Verschieberichtung (6) jeweils einen Winkel (γ) zwischen 0.01° und 10° einschließen.
Abstract:
A centering and guiding device for a metal rod, which can center, guide and clamp a processed metal rod (13), includes a bracket (4), a flange sleeve (7), a chuck (9) and a guide sleeve (5). The chuck(9) and the flange sleeve(7) are both provided on the bracket (4). The guide sleeve (5) is mounted in the flange sleeve (7) which is centered by the chuck (9). Bearings (12) and shafts (11) are provided on the clamping jaws (14) which are provided in the chuck (9). The chuck (9) is surrounded laterally by a protective jacket (10). The device has high centering precision and it is possible to avoid scratching the surface of the metal rod.