摘要:
A device for processing an electrically conductive component includes positioning means that position the component to be processed in a processing position. The positioning means are provided with means for generating a magnetic field. The magnetic field generates forces that act contactless on the component and in this way bring about or support the positioning of the component.
摘要:
Electrostatic wafer chucks are disclosed for use in holding a substrate (e.g., semiconductor wafer) during processing of the substrate in a vacuum chamber or other reduced-pressure environment. A representative wafer chuck provides improved control of the vacuum level in the vacuum environment while providing a mechanism (lift pins) for raising and lowering the substrate relative to the chuck. 1. The chuck body defines a wafer-mounting surface that contacts the under-surface of the substrate. The chuck body defines a gap between the under-surface of the substrate and the chuck for conducting a heat-transfer gas, and multiple feed-through holes extending through the chuck body. Surrounding each feed-through hole is at least a first protrusion configured to separate the respective feed-through hole from the gap. A respective lift pin in each feed-through hole extends from the chuck body across the gap to the under-surface of the substrate. The lift pins can move relative to the chuck body to lift the substrate relative to the wafer-mounting surface. The protrusions surrounding the feed-through holes prevent passage of heat-transfer gas through the feed-through holes.
摘要:
A switching unit (1) for changing the polarity or the magnetic field-strength of ferromagnetic bodies, for example of permanent-magnet clamping devices, possesses a series-arrangement comprising at least one coil (3) which is suitable for receiving ferromagnetic bodies (6), a controllable electronic switch, and an energy-storage system (10). The object is to provide a compact switching unit which switches reliably and which possesses a simple electrical circuit. This object is achieved by means of a switching unit which comprises an electronic switch, in the form of a flashlamp (2).
摘要:
The invention relates to a magnet, which comprises a first permanent magnet for creating a magnetic field, and a shell and a centre, which are arranged to guide a magnetic flux to an object to be gripped. The magnet further comprises a slide, which is arranged to be movable in relation to the shell and the centre, which slide comprises said first permanent magnet, and an electric magnet for moving the slide. The invention also relates to an attaching device, and attaching arrangement and a method for attaching to an object.
摘要:
The invention relates to an attaching device, an arrangement and a method for attaching an object to be worked to a working base. The attaching device comprises: a first holder in the first end of the attaching device for attaching the attaching device to the working base or to another attaching device or to the object to be worked; a second holder in the second end of the attaching device for attaching the attaching device to the working base or to another attaching device or to the object to be worked; and a controller for controlling the holding forces produced by the first and second holders.