Abstract: An optical position-measuring device for determining the relative position of two objects includes two scanning units which are connected to one of the objects and each include a light source, one or more gratings and a detector assembly. A scale is connected to the other object and has two tracks each containing incremental graduations extending along a first one of the measurement directions. The incremental graduations each are composed of graduation regions which have different optical properties and are periodically arranged along an incremental graduation direction. The two incremental graduation directions form an angle of between 0° and 90° relative to each other. Each of the two incremental graduations has a reference mark integrated therein such that scanning of the reference mark allows a reference signal to be generated at a defined reference position along each of the measurement directions. The reference marks include both aperiodic and periodic portions.

Abstract: An interferometric distance measurement device includes a multiple wavelength light source, supplying a light beam having at least three different wavelengths. An interferometer unit is provided, which splits the light beam into a measuring light beam and a reference light beam. The measuring and reference light beams reflected back by measuring and reference reflectors are superimposed in an interfering manner to form an interference light beam. The interference light beam is split via a detection unit such that, in each instance, a plurality of phase-shifted, partial interference signals result per wavelength. With the aid of a signal processing unit, an absolute position information item regarding the measuring reflector is determined from the partial interference signals of different wavelengths.

Abstract: A position-measuring device includes a graduation carrier which carries a measuring graduation and is non-rotatably connectable to a shaft. A scanner is configured to generate scanning signals by scanning the measuring graduation. Evaluation electronics are configured to process the scanning signals into a digital angle value of the shaft. An interface is configured to communicate with subsequent electronics. The scanner is mountable on a machine part that is supported so as to be movable in an axial direction of the shaft, so that the scanning signals are dependent on a position of the machine part in the axial direction of the shaft, and so that a measure of the position of the machine part in the axial direction of the shaft is determinable from the scanning signals by the evaluation electronics.

Abstract: A bus system has a daisy-chain configuration. The bus system includes a master unit and a plurality of slave units that are serially connected to the master unit downstream thereof via a line system. A first one of the slave units first connected downstream of the master unit is configured to invert a request signal, which is provided by the master unit and received via a first line section of the line system, and to output the inverted request signal on a second line section of the line system leading to an adjacent, second one of the slave units.

Abstract: A position measuring device includes: a graduation carrier on which a measuring graduation is provided; a scanning unit for generating position-dependent scanning signals by scanning the measuring graduation; and a signal processing unit for processing the scanning signals into position signals. A monitoring unit is provided, to which at least one signal to be monitored is supplied, and by which a modification signal is able to be output to a modification unit based on the monitoring of the signal to be monitored. At least one position signal is supplied to the modification unit, and the position signal is able to be modified by the modification unit for the transmission of at least one status report and able to be output as output signal to subsequent electronics. The modification is implemented based on the modification signal by adding a disturbance variable to the at least one position signal.

Abstract: A sensor for measuring the position of a component that is displaceable relative to the sensor, includes a circuit board and a metal body. The circuit board includes a first region in which a detector is located, and a second region in which electronic components are located, which are electrically connected to the detector. The metal body includes a first layer having a first area as well as a second layer having a second area. The first region of the circuit board is fixed in place in the first area and the second region of the circuit board is fixed in place in the second area. The first layer and the second layer of the metal body are situated between the first region and the second region of the circuit board so that the first region is located in a first plane and the second region is located in a second plane.

Abstract: A sensor unit for measuring the position of a component that is movable relative to the sensor unit includes a metal body, which has a first opening. An electronic component is arranged in the first opening such that a gap is provided between the electronic component and the metal body, the gap being filled with an electrically insulating molding compound. In addition, an electrically insulating first layer is applied on the electronic component and on the molding compound. The electronic component is electrically contacted with a circuit trace, and the circuit trace is routed through the first layer in a first section and extends on the first layer in a second section.

Abstract: An angle measurement system includes a first component group, a second component group, and bearing elements arranged between the component groups. A gap extends at an axial extension between a first component and a second component so that the components are disposed along both sides of the gap relative to each other without coming into contact. An annular first body is mounted on the first component, which is disposed without contact in relation to the second component group. The second component includes a section, which is separated by a radial gap and is located radially outside and across from a region of the first body that extends in the axial direction, and the first body is situated radially outside and circumferentially about the axis in relation to the bearing elements. The first body is able to hold lubricant. Alternatively or additionally, a corresponding annular second body is fixed in place on the second component.

Abstract: In a position-measuring device for determining the position of a first object with respect to a second object that is displaceable relative to the first object, a measuring standard is connected to the first object and includes at least one periodic scale grating, which is arranged as a transmission grating and has a first periodicity. A scanning unit is connected to the second object and includes at least one light source, at least one periodic scanning grating, which has a second periodicity, and a detector system, which includes detector regions that are sensitive to radiation and are periodically disposed at a third periodicity in a detection plane. The bundles of rays emitted by the light source first impinge upon the scale grating and then pass through the scanning grating.

Abstract: An optical position-measuring device for sensing a position of two relatively movable objects includes a scale connected to one object and having a measuring graduation. A scanning unit is disposed on the other object and has optical elements. An arrangement and design of the optical elements of the scanning unit results in a scanning beam path in which split and subsequently interfered sub-beams propagate mirror-symmetrically with respect to a plane of symmetry and either impinge on and/or are reflected back from the scale in a V-shape. The plane of symmetry is tilted by a defined tilt angle relative to the scale about an axis of rotation that is oriented parallel to a surface of the scale and extends perpendicular to the graduation direction. The sub-beams that are interfered are deflected at the measuring graduation into symmetric diffraction orders. The sub-beams travel identical optical path lengths between splitting and recombination.

Abstract: A scanning unit adapted for scanning a measuring graduation of a scale for purposes of position measurement in a measurement direction includes a housing having a detector configured to generate position-dependent scanning signals. An electrical lead passes out through the housing in the measurement direction. A rotatable member, in which the electrical lead is routed, has a first section extending in the measurement direction and a second section extending in a second direction at an angle relative to the measurement direction. The rotatable member is rotatably mounted on the housing about an axis of rotation extending in the measurement direction.

Abstract: In a method for controlling a milling machine, a milling operation is able to be monitored on the basis of a temporally variable parameter of a numerical control in that the parameter is monitored for the exceeding or undershooting of a limit value during the milling operation. The method includes filtering out the tooth-meshing frequency in the time characteristic of the parameter (Iqnom).

Abstract: A length-measuring device includes a hollow section member having a scale disposed therein. The hollow section member has a slot which extends along the scale, wherein, during position measurement, a drive dog of a scanning unit scanning the scale extends through the slot. The slot is sealed by an elastic seal extending along the hollow section member. A sleeve is attached to at least one end of the seal in a pull-off resistant manner. The sleeve has an axial abutment which is effective in a longitudinal direction of the hollow section member and with which the sleeve bears axially against the hollow section member.

Abstract: A length-measuring device for measuring a relative position of two objects includes a hollow section member in which a tensioned scale tape extends. A mounting block is disposed at each end of the scale tape. An adjuster is configured to position a mounting block on the hollow section member in a first installed condition such that the mounting block is displaceable in the longitudinal direction. The adjuster is movably mounted on the hollow section member and capable of being brought from a first to a second position. The mounting block is in the first installed condition when the adjuster is in the first position. The mounting block is movable to a second installed condition by moving the adjuster to the second position. In the second installed condition, the mounting block is fixed in a nominal position defined by the adjuster on the hollow section member.

Abstract: A scale for inductive position measurement along a measurement direction X includes a support channel made of electrically conductive material having two interconnected spaced-apart side walls extending parallel to the measurement direction X and enclosing an interstitial space therebetween. A succession of first graduations made of electrically conductive material are disposed on the support channel, located in the interstitial space opposite and spaced from one of the two side walls and extending parallel to the measurement direction X. A succession of second graduations made of electrically conductive material are disposed on the support channel, located in the interstitial space opposite and spaced from the other one of the two side walls and extending parallel to the measurement direction X. The succession of first graduations and the succession of second graduations form a gap configured to receive a scanner operable to inductively scan the first graduations and the second graduations.

Abstract: An angle-measuring device includes a housing and a position sensor configured to generate angle values indicating an angular position of a shaft with respect to a reference position. An interface is configured to communicate with subsequent electronics via a data channel. At least one imbalance sensor is configured to generate an imbalance signal from imbalance-induced excursions of the shaft. An imbalance analyzer is configured to generate imbalance values from the imbalance signal. A signal processor is configured to generate imbalance information from the angle values and the imbalance values. The imbalance information is transmittable through the interface to the subsequent electronics.

Abstract: A length-measuring device for measuring a relative position of two objects with respect to each other by scanning a measuring graduation of a scale tape includes a hollow section member in which the scale tape is tensioned along a longitudinal direction of the hollow section member. A tensioner device is configured to tension the scale tape. The tensioner device includes a fixed member which is stationary relative to the hollow section member and a tensioner which is held under tension on the fixed member by a spring acting in the longitudinal direction, as well as a holding member to which the scale tape and the tensioner are attached. The tensioner is detachably secured to the holding member and configured such that the tensioner is separable from the holding member and removable from the hollow section member at an end. An adjuster adjusts the tension of the scale tape.

Abstract: A position measuring device includes: a first graduation carrier having a measuring graduation; a scanning unit, which is arranged so as to allow movement in a measuring direction relative to the measuring graduation in order to generate position-dependent scanning signals by scanning the measuring graduation; a signal processing unit for processing the scanning signals into positional signals; and a signal interface via which the positional signals are able to be output to subsequent electronics. At least one correction unit is provided in the signal processing unit by which at least one signal error of at least one scanning signal is able to be corrected. A monitoring unit is arranged to detect the reaching of a limit value of the signal error, and a correction unit triggering the event is able to be deactivated subsequently.

Abstract: A position measuring device includes a measuring standard and a scanning unit, which are arranged in a manner that allows them to move relative to each other in a measuring direction. The measuring standard includes a graduation, which is scannable by the scanning unit in order to generate positional signals. The scanning unit includes an illumination unit and a detector unit for generating positional signals, the illumination unit being able to emit light in the direction of the graduation and the detector unit being able to detect light modulated by the graduation. The detector unit includes a circuit board and a sensor unit, which is arranged as a semiconductor chip. At least two photodetectors are provided on a front side of the sensor unit facing the graduation, and the electrical connections of the sensor unit are routed to contact surfaces on its rear side by metallic vias. The sensor unit is connected via the contact surfaces to corresponding contact surfaces on the circuit board.

Abstract: A length-measuring device includes a scanning carriage for scanning a measuring graduation that is to be guided longitudinally in the measurement direction on a guide surface. A coupling couples the scanning carriage to a drive dog rigidly in the measurement direction and resiliently transversely to the measurement direction. A first spring is disposed between a connecting element of the coupling and the drive dog and exerts a pressure force on the scanning carriage at a first position so as to press the scanning carriage against the guide surface. A second spring is disposed between the connecting element and the scanning carriage. The second spring is spaced apart from the first spring in the measurement direction and exerts a pressure force on the scanning carriage at a second position spaced apart from the first position in the measurement direction so as to press the scanning carriage against the guide surface.