DR. JOHANNES HEIDENHAIN GMBH Patent applications |
Patent application number | Title | Published |
20150022820 | Measuring Device - A measuring device for the high-precision optical determination of distance or position includes a light source, at least one optical functional element in the form of a plane mirror or a measuring standard, and a detector system. At least two sub-beams are generated, of which at least one impinges on the functional element at least three times before the sub-beams propagate, interferingly superposed, in the direction of the detector system, via which at least one phase-encoded measuring signal is able to be generated from the superposed sub-beams. Between the impingements on the optical functional element, the sub-beam passes through at least two imaging elements, the imaging elements having imaging factors such that no location and directional shear of the interfering sub-beams results in the event the optical functional element tilts out of its setpoint position. | 01-22-2015 |
20140344479 | METHOD FOR TRANSFERRING DATA BETWEEN A POSITION-MEASURING DEVICE AND AN ASSOCIATED PROCESSING UNIT AND POSITION-MEASURING DEVICE THEREFOR - A method for transferring data between a position-measuring device and an associated processing unit includes transferring first data having a first priority in successive cycles from the position-measuring device to the processing unit. The successive cycles are in each case initiated by a request command by the processing unit requesting the first data from the position-measuring device. Second data having a second, lower priority is transferred from the position-measuring device to the processing unit in at least a portion of the successive cycles with the first data. Types of the second data being transferred in a respective one of the successive cycles are variable. At least one particular type, of the types of the second data to be transferred, is assigned to individual cycles of the successive cycles using information stored in the position-measuring device without involvement of the processing unit. | 11-20-2014 |
20140338204 | Angular-Position Measuring Device - An angular-position measuring device includes a shaft rotatable relative to a body about an axis extending in a z-direction. A measuring standard having an end face is fastened on the shaft in rotatably fixed manner. The body includes a scanning device for scanning the measuring standard. Both the roller bearing and a sealing unit are provided on the side of the measuring standard facing the end face relative to the z-direction, The sealing unit includes rings that are rotatable relative to each other and are separated from each other by a gap, the gap being filled at least partially with a fluid. | 11-20-2014 |
20140336979 | POSITION-MEASURING DEVICE - A position-measuring device includes a measuring transducer configured to carry out a position measurement. The position-measuring device has at least one memory having stored parameter data defining an active configuration under which the position-measuring device is operable. The at least one memory further has data and instructions useable to activate at least one further configuration under which the position-measuring device is operable. | 11-13-2014 |
20140284464 | LINEAR ENCODER AND METHOD OF ADJUSTING A LINEAR ENCODER - A linear encoder includes a housing, a scale disposed within the housing and a sensor unit disposed within the housing facing the scale with a gap between the sensor unit and the scale. The sensor unit is configured to scan the scale and obtain position information. At least one adjustment hole for a gap adjustment is disposed in at least one of the housing and an end cover of the housing at a position corresponding to a position of the gap. | 09-25-2014 |
20140218746 | OPTICAL POSITION-MEASURING DEVICE - The present invention relates to an optical position-measuring device for generating a plurality of phase-shifted scanning signals regarding the relative position of a fiber optic scanning head and a reflection measuring standard movable relative thereto in at least one measuring direction. In the fiber optic scanning head, a scanning reticle is disposed before the measuring standard end of an optical fiber. The scanning signals are coded in a wavelength-dependent manner. To this end, a beam incident on the scanning reticle is split into at least two sub-beams which strike the reflection measuring standard and are subsequently recombined to interfere with each other so as to generate the phase-shifted scanning signals. The sub-beams travel different optical path lengths between splitting and recombination. | 08-07-2014 |
20140185057 | Optical Position-Measuring Device - An optical position-measuring device is adapted to detect the position of an object in several spatial degrees of freedom. The object is disposed in a manner allowing it to move at least along a first direction of movement and along a second direction of movement. The position-measuring device includes at least one light source and at least one first and second measuring standard which are located on the object, extend along a first extension direction and a second extension direction and include graduation regions disposed periodically along the first and second extension directions. In addition, a scanning plate is provided, into which at least first and second retroreflector elements are integrated, the first retroreflector element extending parallel to the first extension direction and the second retroreflector element extending parallel to the second extension direction, and via which, sub-beams that fall on them from the first and second measuring standard, are reflected back in the direction of the respective measuring standard. From superposed sub-beams, a detector system is able to generate position signals at least with respect to the movement of the object along the first and second direction of movement. | 07-03-2014 |
20140176962 | Interferometer - An interferometer includes a light source and a beam splitter, via which the beam of rays emitted by the light source is split into a measurement beam and a reference beam. The measurement beam propagates in a measuring arm extending in a first direction between the beam splitter and a measuring reflector. The measuring reflector brings about an offset perpendicular to the direction of incidence between the measurement beam falling on it and the measurement beam reflected back by it. In a reference arm extending in a second direction, the reference beam propagates between the beam splitter and a reference reflector. In addition, the interferometer has a detector system, to which the superposed and recombined measurement beam and reference beam are able to be supplied, and via which a distance-dependent interference signal with respect to the position of the measuring reflector is able to be generated. The measuring reflector in each case includes at least one transmission grating as well as a reflector element. | 06-26-2014 |
20140151540 | POSITION-MEASURING DEVICE - A position-measuring device includes a cylindrical object rotatable about a longitudinal axis and having a circumferential annular reflection measuring graduation. A stationary scanning unit is disposed opposite the cylindrical object and has a light source, a transmission grating and a detector. The scanning unit is configured to optically scan the reflection measuring graduation by beams of light emitted from the light source passing through the transmission grating and then striking the reflection measuring graduation, from where the beams of light are reflected back toward the detector, which is configured to generate rotation-dependent position signals. An optically effective perpendicular distance between the detector and the reflection measuring graduation is selected to be one of greater or less than an optically effective perpendicular distance between the transmission grating and the reflection measuring graduation depending on a radius of the cylindrical object. | 06-05-2014 |
20140146326 | OPTICAL POSITION-MEASURING DEVICE - An optical position-measuring device includes a measuring standard having a first grating in a form of a periodic incremental graduation and an absolute mark. A scanning unit is displaceable relative to the measuring standard in a measuring direction. The scanning unit has at least one second grating disposed at a scanning distance from the first grating. A first detector array is configured to obtain a first scanning signal for purposes of position determination in which the gratings are illuminated with light of a first wavelength. A second detector array is configured to obtain a second scanning signal for purposes of position determination in which the absolute mark is illuminated with light of a second wavelength. The first wavelength is shorter than the second wavelength. | 05-29-2014 |
20140101955 | Absolute Position-Measuring Device - An absolute position-measuring device includes a first subassembly having a measuring standard on which at least one code track is disposed, and a scanning unit with which, by scanning the at least one code track in a measuring direction, position signals are able to be produced, from which an absolute digital position value is able to be generated. The position-measuring device includes a second subassembly having at least one peripheral unit adapted to perform an additional or auxiliary function of the position-measuring device. The first subassembly and the second subassembly are connected to each other by a plurality of electric lines for the transmission of electrical signals. The first subassembly exclusively includes components which are suitable for use in a radiation area of a machine. | 04-17-2014 |
20140077795 | POSITION-MEASURING DEVICE AND METHOD FOR OPERATING THE SAME - A position-measuring device includes a code carrier having a first graduation track and a second graduation track, the second graduation track being an incremental graduation track. A first detector system is configured to scan the graduation tracks so as to generate first position signals. A second detector system is configured to scan the second graduation track so as to generate second position signals. A first position-processing unit is configured to process the first position signals so as to yield a first absolute position value. A second position-processing unit is configured to process the second position signals so as to yield a second absolute position value. The first position-processing unit is configured to feed an absolute auxiliary position value to the second position-processing unit. The second position-processing unit is initializable with the absolute auxiliary position value. | 03-20-2014 |
20140022561 | Position Measuring Device - A position measuring device includes a position detection unit, which may be used to process positional signals that result from scanning a code track by a scanning unit, into digital positional values, a first interface unit for the communication with a control unit via a data transmission channel, and a second interface unit for the communication with at least one peripheral unit. The first interface unit is a hard-wired interface, and the second interface unit is a wireless radio interface. | 01-23-2014 |
20130278751 | DEVICE AND METHOD FOR DETECTING THE POSITION OF AN OBJECT IN A MACHINE TOOL - A device for detecting the position of an object in a machine tool includes a camera configured to provide an image of the object and an object carrier to which the object is connected and whose position within the machine tool is known. A first processing unit is configured to identify a position of the object relative to the camera based on geometric features of the object which are obtained from the image. A second processing unit is configured to identify a position of the object carrier relative to the camera based on geometric features of the object carrier which are obtained from the image. A third processing unit is configured to determine a position of the object relative to the object carrier from the identified positions of the object and the object carrier relative to the camera. | 10-24-2013 |
20130265000 | Device and Method for Transmitting Energy and Data Between a Control Unit and a Position-Measuring Device - In a device and a method for transmitting energy and data between a control unit and a position-measuring device via a line pair, the energy transmission takes place in a charge mode and the data transmission takes place in a communication mode, and an energy storage device is provided in the position-measuring device, which is able to be charged in the charge mode via the line pair, and which is able to supply energy to the position-measuring device in the communication mode, and a charge unit and a switching device are provided in the control unit. The switching unit is adapted to the charge unit to the line pair in two-pole manner. | 10-10-2013 |
20130235390 | Position-Measuring Device and System Having Such a Position-Measuring Device - A position-measuring device, as well as a system having such a position-measuring device, is used for determining the position of a first object relative to a second object, the first and the second object being movable relative to one another along at least two measuring directions. The position-measuring device has an optical unit that is linked to one of the two objects and includes at least one light source, a detector system, as well as further optical elements in a defined configuration. In addition, the position-measuring device includes a measuring standard-reflector unit, which is provided on the other object, and has at least two differently formed regions in one track that are optically scannable by the optical unit for position sensing. The different formation of the regions makes switching among the various measuring directions possible during position sensing, and positional signals can be generated by the optical unit relative to the relative movement of the two objects for each measuring direction. | 09-12-2013 |
20130227853 | LENGTH MEASURING INSTRUMENT - A length measuring instrument that includes a hollow profile section extending in a longitudinal direction, wherein the hollow profile section includes a slot extending in the longitudinal direction and covered by sealing elements. A scale is disposed inside the hollow profile section, wherein the scale includes a measurement graduation which can be scanned by a scanning unit. An end piece is connected to the hollow profile section, wherein the end piece closes the hollow profile section on an end of the hollow profile section, the end piece including an insertion region with which the hollow profile section plunges into the hollow profile section. The length measuring instrument includes a clamping piece that connects the end piece to the hollow profile section, wherein the clamping piece spans the slot and which on two sides of the slot fixes the hollow profile section to the insertion region of the end piece. | 09-05-2013 |
20130227852 | LENGTH MEASURING INSTRUMENT - A length measuring instrument including a hollow profile section extending in a longitudinal direction and an end piece fixed on the hollow profile section for closure of the hollow profile section on an end of the hollow profile section. A scale is disposed inside the hollow profile section, wherein the scale includes a measurement graduation which can be scanned by a scanning unit that is movable in the longitudinal direction relative to the hollow profile section. The length measuring instrument includes a sealing element on the end piece for sealing off the hollow profile section, wherein the sealing element has a cross-section that is at least extensively equivalent to an inside diameter of the hollow profile section. In addition, the sealing element rests sealingly so that a circumferential surface of the sealing element is on an inner face of the hollow profile section. | 09-05-2013 |
20130214140 | Rotary Encoder - A rotary encoder includes a housing and a shaft, which has an axis. A graduated disk is fixed in place on the shaft in torsionally fixed manner. The shaft is adapted for the positionally accurate attachment to a first machine part. Furthermore, a scanning device for scanning the graduated disk is fixed in place on the housing, the housing being arranged such that an outer surface forms a positionally accurate rigid stop on a second machine part in the radial direction. The housing includes a housing body and a cover, the housing body and the cover being connected to each other by press-fitting. The housing has a mechanically flexible element which is deformed as a result of the press-fitting. | 08-22-2013 |
20130212854 | System and Method for Positioning a Processing Tool in Relation to a Workpiece - In a system and a method for positioning a processing tool in relation to a workpiece, an object alignment mark and the workpiece are situated on a first object. In addition, a workpiece alignment mark is situated on the workpiece. The processing tool via which the object alignment mark is detectable is situated on a second object, which is disposed so as to be displaceable along at least one movement direction in relation to the first object. Furthermore, an alignment sensor is disposed thereon, with whose aid the object alignment mark and the workpiece alignment mark are detectable. In addition, a scannable measuring standard, which extends along the at least one movement direction, is disposed on the second object. At least two scanning units for scanning the measuring standard are situated on the first object in order to thereby determine the relative position between the first and the second object along the movement direction, the two scanning units having a defined offset. | 08-22-2013 |
20130208287 | System Having a Plurality of Scanning Units of a Position Measuring Device - In a system for detecting the position of an object in relation to a reference system, the object is arranged so as to be movable in relation to the reference system along at least two orthogonal first and second main movement axes. To record the position of the object in relation to the reference system, a position measuring device includes at least two two-dimensional measuring standards situated along the first main movement axis, and four scanning units for an optical scanning of these measuring standards. In addition, at least four additional supplementary scanning units are provided, which are situated between the four scanning units along the first main movement axis. | 08-15-2013 |
20130207666 | Position-Measuring Device - A position-measuring device for determining the position of two objects movable relative to each other, which during operation, generates data in the form of measured position values, and which is to be connected to a processing unit via a data-transmission channel in order to transmit data, the position-measuring device being able to be connected to the processing unit via a first pair of lines, or alternatively, via a first pair of lines and at least one further pair of lines. The position-measuring device is assigned a detection unit with which the presence or non-presence of at least one further pair of lines is detectable, when the position-measuring device is connected to the processing unit via the data-transmission channel. | 08-15-2013 |
20130204404 | Closed-Loop Control Structure for Damping Low-Frequency Vibrations - A closed-loop control structure for positioning a load with the aid of an electric motor includes a device for the active damping of unwanted, low-frequency vibrations. The closed-loop control structure has a position controller, a speed controller, and a current controller, which together, form a cascaded control loop. Damping signals which counteract unwanted, low-frequency vibrations are applied to the control loop, at least one first and one second damping signal of different phase angle being derived from a single sensor signal, and the first damping signal being injected between the position controller and the speed controller, and the second damping signal being injected between the speed controller and the current controller. | 08-08-2013 |
20130198428 | Device for Transmitting Sensor Data - A device for transmitting sensor data, includes a slave interface connectable to a master interface of a control device, a master interface connectable to a slave interface of a measuring device, at least one sensor interface connectable to a sensor, and a circuit configuration including a manipulation unit and protocol unit. A master-data input signal of the master interface and a sensor-data output signal are supplied to the manipulation unit, which outputs a slave-data output signal to the slave interface. At least one protocol-relevant interface signal of the slave interface or the master interface, and a sensor-data signal of the sensor interface, are supplied to the protocol unit, which generates the sensor-data output signal and, based on manipulation rules and the at least one protocol-relevant interface signal, selects when the manipulation unit outputs the master-data input signal of the master interface or the sensor-data output signal as slave-data output signal. | 08-01-2013 |
20130194584 | Position-Measuring Device and System Having a Plurality of Position-Measuring Devices - In position-measuring devices and a systems having a plurality of position-measuring devices for determining the position of an object in several spatial degrees of freedom, the plurality of optical position-measuring devices scan the object from a single probing direction, and the probing direction coincides with one of the two main axes of motion. | 08-01-2013 |
20130076467 | GUIDE HAVING PASSIVE GRAVITY COMPENSATION AND A VERTICALLY MOVABLY MOUNTED PLATFORM - A guide having passive gravity compensation via a magnet assembly for guiding a first body relative to a second body in a vertical direction has a spring guide which allows movements between a first and second body in the vertical direction and blocks the same in all other directions. The first body is connected to a first magnet and the second body to a second magnet. The second magnet has an opening within which the first magnet is configured, at least in part, so that a repulsion force, which counteracts the gravity of the first body, acts between the first and the second magnet that are each magnetized parallel to the vertical direction, but oppositely, the positive mechanical stiffness of the spring guide being at least partially compensated by a negative stiffness of the magnetic spring formed by the first and second magnets, and the first and second magnets being shaped such that a horizontal distance between the first and second magnet inside of the opening of the second magnet varies in the vertical direction. A platform supported by such guides is provided. | 03-28-2013 |
20130068909 | MOUNTING DEVICE OF A LENGTH MEASURING SYSTEM - A mounting device for mounting a length measuring system extending in a measurement direction, the mounting device including a basic body, a steadying device attached to the basic body and a retainer attached to the basic body. A length measuring system that extends in a measurement direction is fixable on the basic body by clamping between the steadying device and the retainer, wherein the basic body and the retainer are embodied for guiding the retainer on the basic body longitudinally in a manner fixed against relative rotation in a direction of the steadying device by an adjusting element. | 03-21-2013 |
20130063732 | ROTARY POSITION MEASURING INSTRUMENT - A rotary position measuring instrument that includes a light source and a graduated disk having a measuring standard. The rotary position measuring instrument including an optoelectronic detector assembly, wherein the graduated disk is rotatable relative to the light source and the detector assembly about an axis of rotation, wherein rotary-angle-dependent position signals are detectable via the detector assembly. The light source is spaced apart from the measuring standard by a first distance, and the detector assembly is disposed at a second distance from the measuring standard, wherein the second distance is different than the first distance. The graduated disk includes an optical element, which has an optical effect that results in a projecting an image of the light source into a position which has a third distance from the measuring standard, wherein the third distance is different than the first distance. | 03-14-2013 |
20130019489 | LENGTH MEASURING DEVICE - A length measuring device for measuring a position in a measuring direction of a first object and a second object displaceable relative to one another. The device includes a hollow profile, a scale and a fastening element. The fastening element includes a first portion designed to fix the scale in stationary fashion in a measuring direction and to fix the first portion in stationary fashion in the measuring direction on the first object to be measured. The fastening element also includes a second portion with which the fastening element is fastened on the hollow profile. The length measuring device further includes a length compensation element provided between the first portion and the second portion of the fastening element, wherein the length compensation element is embodied for enabling motion of the first portion relative to the second portion in the measuring direction. | 01-24-2013 |
20110258358 | Device and Method for the Automated Detection of an Interface - In a device and a method for the automated detection of an interface between a position-measuring device and sequential electronics that are interconnected via a data-transmission channel, the position-measuring device includes an interface unit and a position-measuring unit. The interface unit is connected first of all to the data-transmission channel, and secondly to the position-measuring unit for the purpose of an internal data exchange. The interface to the sequential electronics is selectable in the interface unit from at least two interfaces. Also disposed in the position-measuring device is an interface-detection unit, which is supplied with at least one input signal that arrives from the sequential electronics via the data-transmission channel, and which includes a device for determining the time sequence of signal edges of the at least one input signal in conjunction with the signal status, as well as an evaluation unit in which the interface used to the sequential electronics is detectable by evaluating the time sequence determined, and is selectable in the interface unit. | 10-20-2011 |
20110218761 | ABSOLUTE POSITION MEASURING DEVICE - An absolute angle coding that includes a first cyclically continued code sequence that cyclically continues a first code sequence a multiple number of times, wherein the first code sequence is disposed within 360° and includes a first succession of code elements that defines a first angle sector. The code further includes a second cyclically continued code sequence that cyclically continues a second code sequence a multiple number of times, wherein the second code sequence is disposed within 360° and includes a second succession of code elements that defines a second angle sector, wherein the first cyclically continued sequence and the second cyclically continued code sequence in combination unambiguously absolutely encode the 360°. The first angle sector is not equal to the second angle sector, and at least one of the second code sequences of the second cyclically continued code sequence is embodied only partially within said 360° and with a succeeding second code sequence forms a joint. | 09-08-2011 |
20110213586 | Device and Method for Transmitting Data Between a Position-Measuring Device and Sequential Electronics - In a device and a method for transmitting data between a position-measuring device and sequential electronics via a data-transmission channel, the position-measuring device includes an interface unit and a processing unit, the interface unit being connected first of all to the data-transmission channel, and secondly, to the processing unit for the purpose of an internal data exchange with the aid of a request channel and a response channel. The interface unit includes a command interpreter by which, using conversion rules, commands which arrive via the data-transmission channel are convertible into internal requests and are able to be fed via the request channel to the processing unit, and response data which arrives from the processing unit via the response channel is convertible into output data. The interface unit further includes a rules memory for storing the conversion rules, which is at least partially modifiable. | 09-01-2011 |
20110209352 | LENGTH MEASURING DEVICE - A length measuring device for measuring a relative position of two objects, the length measuring device including a scale in a housing and a scanning unit displaceable in a measuring direction X relative to the scale and the housing, wherein the scanning unit is disposed inside the housing and including a heat-generating electrical component. The length measuring device further including a thermal conduction path designed for transferring heat generated at the heat-generating electrical component to the housing. | 09-01-2011 |
20110209351 | ARRANGEMENT AND METHOD FOR GENERATING A REFERENCE IMPULSE FOR A POSITION MEASURING DEVICE - An arrangement for generating a reference impulse for a position measuring device, wherein the position measuring device includes a scale with at least one incremental track and at least one reference mark and a scanning unit for generating position signals by scanning the at least one incremental track and for generating an analog reference impulse by scanning the at least one reference mark. The arrangement includes a reference impulse memory unit that receives the analog reference impulse and stores the received analog reference impulse as a stored reference impulse. The arrangement further includes a reference impulse generating unit in communication with said reference impulse memory unit and said reference impulse generating unit receives the stored reference impulse and at least one of the position signals, wherein the reference impulse generating unit turns on a reference impulse as a function of the stored reference impulse and an occurrence of a set condition and turns off the reference impulse if a reset condition occurs, and the set and reset conditions are derivable from said at least one of the position signals. | 09-01-2011 |
20110208475 | ABSOLUTE ANGLE CODING AND ANGLE MEASURING DEVICE - An absolute angle coding that includes a first code sequence disposed within 360°, wherein the first code sequence has a first length and is disposed N | 08-25-2011 |
20110024920 | COMPONENT ARRANGEMENT AND METHOD FOR PRODUCING A COMPONENT ARRANGEMENT - A component assembly including a carrier element including a first contact face and a semiconductor component disposed on the carrier element, wherein the semiconductor component includes a second contact face. The component assembly further includes a contact-making bonding wire, wherein one end of the contact-making bonding wire is connected to the first contact face and a second end of the contact-making bonding wire is connected to the second contact face. The component assembly includes a flow stop bonding wire positioned on the second contact face, wherein the flow stop bonding wire defines on the second contact face a first zone and a second zone. An encapsulation material is applied from the first zone to the first contact face so as to define an encapsulation for the flow stop bonding wire, wherein the flow stop bonding wire prevents an uncontrolled flow of the encapsulation material into the second zone. | 02-03-2011 |