Abstract: The invention relates to a method for determining a position of a work piece and of a tool in a machine tool, in which a work piece is clamped at the machine tool, in which the tool is subsequently inserted into a rotatable spindle shaft by means of a tool holder and the spindle shaft is set into rotation, in which an electrical voltage is applied between the work piece and the tool, in which the tool and the work piece are displaced with respect to one another, and in which a variation in the applied voltage is determined in the event of a contact between the tool and the work piece, and the respective position of the work piece and/or of the tool is determined and recorded in a computing program for control/regulation of the machining of the work piece.

Abstract: The invention relates to a method for optimizing vibration of a machine tool, in which a driven shaft is rotated, in which a speed range is subsequently passed through, wherein the vibrations occurring in said speed range are sensed and wherein an optimum speed having a minimized vibration is determined and adjusted.

Abstract: The invention relates to a linear guiding rail for a linear guiding system, comprising at least one guiding wagon being movable along the linear guiding rail by means of unrolling members, characterized in that at least one coolant groove extending at least along a partial length of the linear guiding rail is formed in the region of the linear guiding rail.

Abstract: A method for machining a workpiece 1 by means of a rotating cutting tool 2, in which the tool 2 is moved along paths 3 relative to the workpiece 1, characterized in that limits of machining portions to be machined by means of at least one tool 2 are determined, that within the range of the limits of machining portions to be machined by means of the tool 2 an infeed and/or lifting movement of the tool 2 is defined and that the infeed or lifting movement during machining of the workpiece 1 is carried out within the range of the limits of machining portions to be machined by means of the tool 2.

Abstract: The present invention relates to a method for machining a workpiece 1 by means of a rotating tool 2 provided with at least one cutting edge 3, in which method the machining operation is interrupted at predetermined time intervals, the tool 2 is moved away from the workpiece 1, and a wear measurement is subsequently carried out on the tool 2, characterized in that after the wear measurement the tool 2 is returned at least into the feed position assumed by it before the interruption and the machining operation is continued, and that subsequently within a period of time the tool is continuously fed for compensating the wear measured.

Abstract: The present invention relates to a method for measuring a tool 1 of a machine tool, the tool 1 being measured by means of a laser measurement device 2, 3, 4, characterized in that the tool 1 is sprayed with an oil- or grease-dissolving agent prior to laser measurement.

Abstract: The invention relates to a method for optimizing vibration of a machine tool, in which a driven shaft 17 is rotated, in which a speed range is subsequently passed through, wherein the vibrations occurring in said speed range are sensed and wherein an optimum speed having a minimized vibration is determined and adjusted.

Abstract: The invention relates to a linear guiding rail for a linear guiding system, comprising at least one guiding wagon 2 being movable along the linear guiding rail 1 by means of unrolling members, characterized in that at least one coolant groove (5) extending at least along a partial length of the linear guiding rail 1 is formed in the region of the linear guiding rail 1.

Abstract: The present invention relates to a weight compensating device comprising a carrier and a component which is supported on the carrier and is displaceable particularly in vertical direction by means of a drive, characterized in that the carrier and the component have arranged thereinbetween at least one negative pressure body of a variable length which is connected to a negative pressure source for compensating the weight acting on the component.

Abstract: The present invention relates to a method and an apparatus for vibration damping in a machine tool comprising at least one hydrostatic guide 8 including at least one pocket 1 for supporting a first component 9 on a second component 10, through which an oil flow is passed with a predetermined volume flow and at a predetermined pressure and exits through at least one gap 3, characterized in that the oil flow through the gap 3 is regulated in response to the loads arising so as to achieve a constant width of the gap 3.