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 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: A network for monitoring an Ethernet-based communication network in a motor vehicle monitors the communications connection between two network nodes connected via the communications network. The duration of signals between network nodes of the communication network is measured bidirectionally and cyclically and changes in signal duration are evaluated.

Abstract: Suggested are biocide compositions, comprising (a) Isoamyl lactate; (b) Biocides and optionally (c) Oil components or co-solvents and/or (d) Emulsifiers. The compositions show high solubility for biocides and improved emulsification properties.

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 machine tool guide carriage assembly, comprising a first linear guide track having at least two first parallel guide rails, wherein a first carriage is mounted on the guide track in a linearly displaceable manner, which carriage surrounds a free space in which a second carriage can be linearly displaced at a right angle to the first guide track, wherein the free space is formed by two bearing elements that are arranged at a distance from each other.

Abstract: Solvents for offset printing inks comprising at least one fatty acid ester that is the reaction product of at least one of C6-26 fatty acid and at least one polyhydroxy compound selected from the group consisting of polyglycerols, and adducts of 1 to 20 mol of ethylene oxide and/or propylene oxide with polyglycerols.

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 invention relates to a method for controlling movement of at least one subassembly of a machine tool, wherein the subassembly includes a rotatable spindle supported at the subassembly by at least one magnetic bearing having at least one bearing gap, wherein the subassembly is moved along a path smoothed by a controller with respect to an exact path, wherein the spindle in its housing is moved along a differential path by means of the magnetic bearing, and wherein the addition (superimposition) of the smoothed path and the differential path generated therewith results in the exact path.

Abstract: Disclosed are lubricant compounds with a good shear stability defined by the loss of the kinematic viscosity at 100° C., containing base oil and a synthetic complex ester, the complex ester having a kinematic viscosity at 40° C. of greater than 400 and up to 50,000 mm2/s and being obtained by reaction of a) polyols and monocarboxylic acids and dicarboxylic acids, or of b) polyols and mono-alcohols and dicarboxylic acids, or of c) polyols and mono-alcohols and monocarboxylic acids and dicarboxylic acids. In addition the use of said lubricant compounds containing the complex esters as oils for vehicle transmission, axle, industrial drives, compressors, turbines or engines is described.

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: 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: There is described a fuel composition which is substantially free of alkoxylated compounds and is substantially free of long-chain alkyl alcohols having at least 6 C atoms, and contains at least 95% by volume of a hydrocarbon-based fuel and 0.1 to 5% by volume of an additive of the formula (I); R—CO—NR1R2 (I) in which R is a saturated or unsaturated, linear or branched alkyl radical having 6 to 21 C atoms; and R1 and R2, which may be the same or different, each represent a hydroxyalkyl radical having 1 to 4 atoms.

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: There is described a fuel additive composition comprising an oleic alkanolamide and an alkoxylated oleic acid. There is also described a fuel composition comprising a hydrocarbon fuel and a fuel additive comprising an oleic alkanolamide and an alkoxylated oleic acid and also a method of running a combustion engine using the fuel if the invention.

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.