Abstract:
Multi-functional mechanism for the positioning of devices to hold cutting and/or rotating tools for drilling and/or milling operations, for machine tools, including a table (6) designed to take on operating positions spaced apart angularly, said table (6) supporting said tool-holding devices, a rotating support column (4) for said table (6), a stationary column (3) fixed to the base (1) of a machine tool, motor means (9, 10) to rotate said rotating support column (4) of the table (6) around a predetermined rotation axis (B-B), connection means (15, 19) movable between a first position in which the respective connection means (11) integral with said rotating column (4) and connection means (14) integral with said stationary column (3) are connected to each other, in predetermined operating positions spaced apart angularly, and a position in which said connection means (15, 19) are axially disengaged from said connection means (11, 14). The mechanism also includes a frictional locking member (20) acting on a part (7) integral with said rotating column (4), said locking member (20) locking said rotating column in various angular operating positions even different from those determined by said connection means (15, 19) and connection means (11, 14) as well as a play take-up member (27) acting on said part (7) integral with the rotating column (4), with the interposition of an axial thrust bearing (29), in the opposite direction to the locking direction exerted by said frictional locking member (20), said play take-up member (27) only operating when said rotating column (4) is free to rotate around the stationary column (3).
Abstract:
A turret (24) is clamped to a tool post body (22) by a pair of coupling members (66, 68). Also, at the time of indexing rotation for tool selection, the tool post body (22) and the turret (24) are moved relative to each other in the Z-axis direction, whereby the pair of coupling members (66, 68) are disengaged to unclamp the turret (24). At this time, in synchronism with the relative movements of the tool post body (22) and the turret (24) in the Z-axis direction, the tool post body (22) is moved relative to a lathe base (10) in the Z-axis direction. Such movements of the tool post body (22) are adjusted in such a direction and in such an amount of movement as to eliminate relative movements between the turret (24) and a headstock (12). Such movement control stops movements of the turret (24) and a tool mounted thereon relative to the headstock (12) and a work, so that the problem of interference between these constituent components is eliminated.
Abstract:
Es wird ein Rundschalttisch vorgeschlagen, der ein Gehäuse (5) und einen im Bereich einer Vorderseite (6) des Gehäuses (5) angeordneten, bezüglich des Gehäuses (5) um eine Drehachse (3) drehbaren Drehteller (4) aufweist, wobei der Drehteller (4) Bestandteil eines Kopfabschnittes (8) ist, an den sich in Achsrichtung der Drehachse (3) rückseitig ein Antriebsabschnitt (9) anschließt, der mit dem Drehteller (4) in Drehantriebsverbindung stehende Drehantriebsmittel aufweist. Der Rundschalttisch enthält zu seiner externen Befestigung an einer Haltestruktur (62) nutzbare Befestigungsmittel (63), die eine außen an dem Gehäuse (5) angeordnete Abstützfläche (58) aufweisen. Der Kopfabschnitt (8) des Rundschalttisches (1) überragt den Antriebsabschnitt (9) ringsum seitlich in bezüglich der Drehachse (3) radialer Richtung, wobei die Abstützfläche (58) an der dem Drehteller (4) abgewandten Rückseite des Kopfabschnittes (8) um den Antriebsabschnitt (9) herum angeordnet ist.