Abstract:
Die Erfindung betrifft eine Klemm- und/oder Bremsvorrichtung mit einem Basiselement (7) und einem Beaufschlagungselement (17), über welches die erzeugten Klemm- und/oder Bremskräfte auf ein Objekt (39) übertragbar sind, sowie wenigstens zwei benachbarte Wandungen (3), welche mit jeweils einem Endbereich das Basiselement (7) und das Beaufschlagungselement (17) beaufschlagen und wobei die Wandungen (3) einen Druckraum definieren. Die Wandungen (3) weisen jeweils einen Biegebereich (3a) auf und bilden somit zwischen dem Basiselement (7) und dem Beaufschlagungselement (17) ein federndes Element. Über das Beaufschlagungselement (17) ist im drucklosen Einbauzustand eine vorbestimmte Kraft auf das Objekt (39) ausübbar, wobei bei einer Beaufschlagung des Druckraums mit Überdruck oder Unterdruck in Folge einer Änderung der Krümmung der Biegebereich (3a) eine Änderung der Kräfte oder eine Bewegung des Beaufschlagungselements bewirkt wird. Die Wandungen (3) können auch fest mit dem Beaufschlagungselement (17) und/oder mit dem Basiselement (7) verbunden sein.
Abstract:
An alignment device comprising a movable table, a plurality of movable support means for movably supporting the movable table, a means for reading a recognition mark, and a control means for controlling the drive of the movable support means based on information from the recognition means, wherein each movable support means consists of a means having a pair of support blocks provided to be able to contact/separate with/from the movable table and a pair of piezo-drive units provided with expansible first, second and third piezo-elements connected to the support blocks and extending in each direction, and being capable of walking operation with respect to the movable table by the operation of each piezo-drive unit. An alignment accuracy up to a nano meter level can be attained, and the alignment device itself and therefore the entire apparatus incorporating the alignment device can be significantly reduced in thickness and size.
Abstract:
A piezoelectric adjusting mechanism (8) comprises a piezoelectric displacing element (20) which is placed in contact with the cutting element (4, 6) and which is provided for displacing the same with regard to the tool shaft (2). The inventive mechanism also comprises a holding mechanism (32) for holding the first displacing element (20) in a determined deformation state. The inventive piezoelectric adjusting mechanism (8) can be used, in particular, for a fine boring tool in order to adjust cutting elements (4, 6), said elements being arranged on the outer periphery (12) of the fine boring tool, in a radial direction of the fine boring tool.
Abstract:
Die vorliegende Erfindung betrifft eine Werkstückaufnahraeeinrichtung zur Aufnahme eines Werkstücks und zur Verwendung in einer Vorrichtung zum spanenden Bearbeiten eines Werkstücks (5) mit: - einer Werkzeughalterung zur Aufnahme des Werkzeugs (6), - eine Werkstückaufnahmeeinrichtung zur Aufnahme des Werkstücks (5) dadurch gekennzeichnet, dass während des spanenden Bearbeitens mindestens eine erste Schwingungskomponente in einer Z-Richtung und eine, insbesondere simultane, zweite Schwingungskoraponente in X-und/oder Y-Richtung durch Schwingungskomponenten (2, 2 ', 3, 3', 4, 7) einbringbar sind.
Abstract:
Bei einem Verfahren zur Werkstückbearbeitung wird ein spanendes Werkzeug relativ zum Werkstück geführt, wobei eine Vibration überlagert wird, deren Amplitude mindestens 5 μm ist. Eine Versorgungsschaltung für einen Piezo-Aktor eines vibrierenden Werkzeugs erzeugt eine Spannung am Spannungsausgang mit einem Gleichanteil und einem Wechselanteil. Ein Versorgungssystem für einen Piezo-Aktor eines vibrierenden Werkzeugs hat die obige Versorgungsschaltung, die mit einer Sekundärspule verbunden ist, die mit einer Primärspule gekoppelt ist.
Abstract:
The invention relates to a method for machining a workpiece using a tool, wherein the tool engages with the workpiece and a cutting motion is induced between the two. A first relative vibration motion superimposed on the cutting motion between the workpiece and the tool is induced in that one or more characteristic values of the first vibration motion and one or more characteristic values of the cutting motion are adjusted with respect to one another. The superimposed vibration motion can also be induced such that surface regions of the workpiece that can be differentiated arise.
Abstract:
The invention relates to a device for correcting the position of at least one element of a machine tool, in particular a milling machine (F), at least one compensating element (13.3) being disposed between a machine element (13.1) and the element (13.2) of which the position is to be corrected, said compensating element being adjustable by an actuating distance such that, as a result of the actuation of the compensating element by the actuating distance, the element is pivotable about a pivot axis (S), and the machine element and the element of which the position is to be corrected being coupled to one another by a joint (16.1) which ensures the pivoting movement about the pivot axis (S).
Abstract:
Die Erfindung betrifft eine Vorrichtung mit wenigstens einem röhrenförmigen Piezoelement zur elektromechanischen Positionierung eines Läufers im Innern des Piezoelements. Diese ist gekennzeichnet durch wenigstens ein mit dem Piezoelement verbundenes elastisches Reibungsmittel zur Ausübung einer Normalkraft auf den Läufer. Ein Verfahren zur Steuerung der Vorrichtung ist offenbart.
Abstract:
The invention relates to an actuator for positioning an object in a first direction of movement, comprising a base, at least three positioning members, wherein each of the at least three positioning members has a contact surface which is configured to bear against the object under prestress, and a control device to drive the at least three positioning members in friction drive mode. In addition, the actuator comprises at least one heating device which is connected to the control device, in which the at least one heating device is configured to heat the at least three positioning members, and prestressing means to provide the prestress with which the contact surfaces of the at least three positioning members bear against the object, in which the at least three positioning members are of elongate design and are connected by one end to the base, and in which the contact surface is situated near the other end of the at least three positioning members, and in which the at least three positioning members are made from a material which expands under the effect of heat.
Abstract:
The invention relates to an actuator for positioning an object in a first direction of movement, comprising a base, at least three positioning members, wherein each of the at least three positioning members has a contact surface which is configured to bear against the object under prestress, and a control device to drive the at least three positioning members in friction drive mode. In addition, the actuator comprises at least one heating device which is connected to the control device, in which the at least one heating device is configured to heat the at least three positioning members, and prestressing means to provide the prestress with which the contact surfaces of the at least three positioning members bear against the object, in which the at least three positioning members are of elongate design and are connected by one end to the base, and in which the contact surface is situated near the other end of the at least three positioning members, and in which the at least three positioning members are made from a material which expands under the effect of heat.