Abstract:
A positioning device comprising a first part (1) which is movable relatively to a second part (2) in an X-direction and a Y-direction, said first part (1) comprising a carrier (5) on which a system of magnets (3) is arranged according to a pattern of rows (7) and columns (8) extending parallel to the X-direction and the Y-direction, respectively. The magnets in each row and column are arranged according to a Halbach array, i.e. the magnetic orientation of successive magnets in each row (7) and each column (8) rotates 90° counter-clockwise. The second part (2) comprises an electric coil system (4) with two types of electric coils (C1, C2), one type having an angular offset of +45°, and the other type having an offset of -45° with respect to the X-direction. The magnet configuration causes a very strong magnetic field.
Abstract:
A linear motor with high heat recovery efficiency that inhibits the rise in surface temperature is offered. The linear motor is disposed in a surrounding member (142) and facing a flow passage (142a) of a liquid for regulating temperature, and is provided with a coil unit (141) having at least a part thereof in contact with the liquid. The coil unit (141) is provided with a coil body (144), a mold layer (143) that covers the coil body and holds it in specific form, and a liquid protection layer (150) that covers the mold layer (143) and has liquid protection properties.
Abstract:
Precision machining stage equipment, wherein a movable table for supporting a work is allowed to move in any direction in a same plane by a table holding mechanism, fed in the same plane by an electromagnetic drive means, and stopped at any position in the same plane by an electromagnetic braking mechanism, the electromagnetic drive means feeds the movable table by a magnetic interaction between driven magnets and drive coils, and the electromagnetic braking mechanism having braking magnets and non-magnetic and conductive braking plates produces a braking force based on the magnetic action of a magnetic force by an eddy current produced in the braking plates and a magnetic force of the braking magnets according to the movement of the movable table by the set of the braking magnets and the braking plates.
Abstract:
An electromechanical system having an object and drives adapted to cooperate to provide the object with two degrees of mobility is described herein.
Abstract:
The invention relates to a rotary body for a printing press, comprising a stator (1) and a rotor (2), which can be rotated in relation to the stator (1) and equipped with at least one permanent magnet (7). At least one stator winding (3) is provided in the stator (1) in such a way that a torque, which acts on the rotor (2), can be generated by the interaction of said winding with the permanent magnet(s) (7) of the rotor (2). The invention also relates to a drive for a printing press, comprising a rotary body of this type.
Abstract:
The invention relates to a displacement device (1, 31) provided with a first part (3, 33) with a primary coil (4, 34) and a second part (9, 39) with a secondary coil (10, 40), whereby the secondary coil (10, 40) can be moved in relation to the primary coil (4, 34) and is electrically connected to driving circuit. Once of the coils (4, 34) is an elongated coil, which extends in a travel direction, while the other coil (10, 40) can be moved in relation to the first coil (4, 34) in the travel direction.
Abstract:
Die Erfindung bezieht sich auf eine hochdynamische Linsenbearbeitungsmaschine mit einem Maschinenbett, auf dem mindestens ein erster Werkzeughalter 2 und ein eine Werkstückspindel aufweisender Werkstückhalter mit einer Rotationsachse R1 angeordnet sind. Der erste Werkzeughalter 2 weist mindestens einen dynamischen Werkzeuglinearantrieb 1 mit einer parallel zur Rotationsachse R1 verlaufenden ersten Oszillationsachse O1 auf. Der Werkstückhalter weist mindestens einen dynamischen Linearantrieb in Richtung einer parallel zur ersten Oszillationsachse O1 angeordneten zweiten Oszillationsachse O2 auf. Ausserdem betrifft die Erfindung einen Linearantrieb für eine Linsenbearbeitungsmaschine.
Abstract:
An apparatus has (a) a first component having one or more electromagnetic elements and (b) a second component having one or more electromagnetic elements and movably coupled to the first component. The second component moves with respect to the first component in a cyclical manner. The one or more electromagnetic elements of the first component interacts with the one or more electromagnetic elements of the second component during each of one or more cycles of motion of the second component with respect to the first component such that, when a constant force profile is applied to move the second component with respect to the first component, the speed of motion increases and decreases one or more times during each cycle of motion due to different levels of electromagnetic interaction between the electromagnetic elements within each cycle of motion.