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Renishaw Plc patents


Recent patent applications related to Renishaw Plc. Renishaw Plc is listed as an Agent/Assignee. Note: Renishaw Plc may have other listings under different names/spellings. We're not affiliated with Renishaw Plc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "R" | Renishaw Plc-related inventors


Braking system

An electro-magnetic brake which is switched between an operative braking position and an inoperative position by transient pulses of current. It is held passively in the operative and inoperative positions with little or no current. ... Renishaw Plc

Encoder apparatus

An encoder apparatus including a scale and a readhead including a sensor including an array of sensor elements for detecting a scale signal falling on the sensor, configured such that the sensor elements' outputs that are used to determine the relative position of the scale and readhead are weighted such that the influence of the sensor elements on the determined relative position of the scale and readhead varies across the array according to a predetermined non-rectangular window function that is configured to reduce the adverse effect of undesirable frequencies in the scale signal so as to thereby reduce the encoder apparatus' sub-divisional error.. . ... Renishaw Plc

Optical element

An optical element for generating diffraction orders for an encoder apparatus, in which the optical element includes an array of diffraction features arranged such that the spacing between the centres of adjacent diffraction features varies irregularly from one pair of adjacent features to the next.. . ... Renishaw Plc

Coordinate positioning machine

A non-cartesian coordinate positioning machine is provided that comprises an extendable leg assembly for positioning a component such as a measurement probe within a working volume of the machine, and a constraint member associated with the extendable leg assembly for providing a predetermined part of the extendable leg assembly with substantially a same orientation relative to gravity for a same position of the component within the working volume. In a preferred embodiment, the orientation relative to gravity is maintained substantially constant, so that a plane defined by the predetermined part is substantially aligned with gravity, as the component is moved around the working volume.. ... Renishaw Plc

Method for measuring an artefact

A method of measuring at least one point on an artefact to be inspected that is located within a positioning apparatus' measurement volume, the method comprising, obtaining at least two images of the artefact obtained from different perspectives and, based on a given nominal location of a predetermined point to be measured within said positioning apparatus' measurement volume, determine the location of said predetermined point in each of the at least two images.. . ... Renishaw Plc

Additive manufacturing apparatus and method

An additive manufacturing apparatus and corresponding method for building an object by layerwise consolidation of material wherein the apparatus includes a build enclosure containing a build support for supporting the object during the build, a material source for providing material to selected locations for consolidation, a radiation device for generating and directing radiation to consolidate the material at the selected locations and an acoustic sensing system. The acoustic sensing system may be arranged to detect acoustic signals generated in the build enclosure by consolidation of the material with the radiation. ... Renishaw Plc

Method of manufacturing an article

A method of manufacturing an article, comprising taking an article formed in an initial state via an additive manufacturing process and performing a second manufacturing process to transform the article into a second state, which comprises mounting the article in a holding device, processing at least one first feature on the article, which comprises processing at least one set of mounting features on the article, re-mounting the article via the at least one set of mounting features, and then processing at least one second feature on the article.. . ... Renishaw Plc

A device and method for generating and displaying data relating to an additive manufacturing process

A device and method for generating scan data and/or slice data for use in an additive manufacturing process, in which an energy beam is scanned across layers of flowable material to consolidate the material in a layer-by-layer manner to build a part. The device includes a display and a processor. ... Renishaw Plc

Measurement method and apparatus

A method is described for analysing probe data collected by a scanning probe carried by a machine tool. The probe data is collected as the machine tool moves or scans the scanning probe along a scan path relative to a workpiece. ... Renishaw Plc

Additive manufacturing apparatus with a chamber and a removably-mountable optical module; method of preparing a laser processing apparatus with such removably-mountable optical module

An additive manufacturing apparatus comprises a processing chamber defining a window for receiving a laser beam and an optical module. The optical module is removably-mountable to the processing chamber for delivering the laser beam through the window. ... Renishaw Plc

Method of determining sub-divisional error

A method of determining the sub-divisional error of an encoder apparatus that is configured to measure the position of relatively moveable parts of an apparatus on which an inspection device for inspecting an artefact is mounted. The method includes causing the inspection device to obtain measurements which includes relatively moving the relatively moveable parts of the apparatus, and using the measurements to determine the encoder apparatus' sub-divisional error.. ... Renishaw Plc

Transmission raman spectroscopy

A transmission raman spectroscopy apparatus has a light source for generating a light profile on a sample, a photodetector having at least one photodetector element, collection optics arranged to collect raman scattered light transmitted through the sample and direct the raman light onto the at least one photodetector element and a support for supporting the sample. The support and light source are arranged such that the light profile can be moved relative to the sample in order that the at least one photodetector element receives raman scattered light generated for different locations of the light profile on the sample.. ... Renishaw Plc

Additive manufacturing apparatus and methods

An additive manufacturing apparatus builds a part by selectively consolidating flowable material in a layer-by-layer building process. The apparatus has an inert gas vessel having a build chamber a layering device for depositing layers of material in the build chamber; a scanner for delivering an energy beam to selected areas of each layer to consolidate flowable material of the layer, a gas flow circuit for generating an inert gas flow through the build chamber and a cooling device arranged to cool an internal surface of the gas flow circuit to generate cooled inert gas. ... Renishaw Plc

Additive manufacturing apparatus and methods

An additive manufacturing apparatus including a scanner for directing a laser beam on to layers of flowable material to selectively solidify the material to form an object in a layer-by-layer manner. The scanner includes an optical component operable under the control of a first actuator to reflect the laser beam over a first range of angles in a first dimension and the or a further optical component operable under the control of a second actuator to reflect the laser beam over a second range of angles in the first dimension, wherein the second actuator provides a faster dynamic response but a smaller range of movement of the laser beam than the first actuator.. ... Renishaw Plc

01/11/18 / #20180010221

Additive manufacturing method and powder

A method of manufacturing a part including selective laser melting of a powder including a steel alloy containing, by weight, 16% to 19% chromium and 12.2% to 13.5% nickel, wherein the powder is substantially non-magnetic.. . ... Renishaw Plc

12/21/17 / #20170363403

Method and apparatus for inspecting workpieces

Methods are described for measuring series of nominally identical production workpieces on a dimensional measuring apparatus such as a coordinate measuring machine. One master workpiece of the series is calibrated, to provide correction values which are used to build an error map of the measuring apparatus. ... Renishaw Plc

11/16/17 / #20170326646

Additive manufacturing apparatus and methods

An additive manufacturing apparatus has a build chamber, a build platform lowerable in the build chamber such that layers of flowable material can be successively formed across the build platform, a laser for generating a laser beam, a scanning unit for directing the laser beam onto each layer to solidify the material in selected areas and a processor for controlling the scanning unit. The processor is arranged to control the scanning unit to direct the laser beam to solidify material of a layer along a scan path, the laser beam advanced along at least a section of the scan path in an opposite direction to a direction in which the laser beam is advanced along a corresponding section of a corresponding scan path of a previous layer. ... Renishaw Plc

10/26/17 / #20170304945

Additive manufacturing apparatus and methods

An additive manufacturing apparatus including a chamber, a build platform movable in the chamber such that layers of flowable material can be successively formed across the build platform, a unit for generating an energy beam for solidifying the flowable material, a scanning unit for directing the energy beam onto selected areas of each layer to solidify the material in the selected areas and a getter for absorbing oxygen, nitrogen and/or hydrogen from atmosphere in the chamber.. . ... Renishaw Plc

10/26/17 / #20170304895

Additive manufacturing apparatus and method

An additive manufacturing apparatus including a build chamber containing a support for supporting a material bed, a layering device for forming layers of the material bed, a laser or electron beam source for generating a laser or electron beam, a device for steering the laser or electron beam to solidify selected areas of each layer to form a part and a microwave or radio wave source controllable to generate a microwave or radio wave field to differentially heat the material bed based upon the selected areas.. . ... Renishaw Plc

10/05/17 / #20170284971

Inspection apparatus

An ultrasound inspection apparatus for use with coordinate positioning apparatus is described. The apparatus includes a base module that is attachable to the moveable member of the coordinate positioning apparatus. ... Renishaw Plc

10/05/17 / #20170284785

Method and apparatus for inspecting workpieces

A series of nominally identical production workpieces are measured on a workshop coordinate measuring apparatus. They are corrected using correction values generated by comparing coordinate values of a reference workpiece measured on the workshop apparatus with corresponding values derived from external measurements. ... Renishaw Plc

09/28/17 / #20170276651

Measurement probe

An ultrasound probe is described that comprises a transducer for transmitting and receiving ultrasound. The probe also includes a coupling element, such as a spherical ball of self-lubricating or hydrogel material, for contacting and acoustically coupling to an object to be inspected. ... Renishaw Plc

09/14/17 / #20170261305

Method of finding a feature using a machine tool

A method of finding a feature of an object using an analogue probe mounted on a machine tool. The method includes the analogue probe and/or object following a course of motion which causes the analogue probe's surface sensing region to traverse across the feature to be found a plurality of times whilst approaching the feature over successive traverses so as to ultimately arrive in a position sensing relationship with the feature so as to collect scanned measurement data about the feature along at least part of a traverse.. ... Renishaw Plc

08/24/17 / #20170239725

A module for additive manufacturing apparatus

This invention concerns a module for insertion into an additive manufacturing apparatus. The module comprising a frame mountable in a fixed position in the additive manufacturing apparatus, the frame defining a build chamber and a dosing chamber. ... Renishaw Plc

08/17/17 / #20170234837

Acoustic apparatus and method

An acoustic device for inspection of an object. The device includes an ultrasonic source including a snap-through buckling actuator. ... Renishaw Plc

08/10/17 / #20170227467

Spectroscopy apparatus

Spectroscopy including a source generating light profile on the sample. The light profile is movable relative to the sample. ... Renishaw Plc

08/03/17 / #20170216256

Method of treating a cns disorder using a water-soluble histone deacetylase inhibitor

A method of treating a cns disorder. The method comprises providing a water-soluble histone deacetylase inhibitor, and administering the water-soluble histone deactylase inhibitor directly into a brain via convection enhanced delivery.. ... Renishaw Plc

07/06/17 / #20170189961

Selective laser solidification apparatus and method

A selective laser solidification apparatus including: a powder bed onto which a powder layer can be deposited, a gas flow unit for passing a flow of gas over the powder bed along a gas flow direction, a laser scanning unit for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form at least one object and a processing unit for selecting a scanning sequence of the laser beam based on the gas flow direction.. . ... Renishaw Plc

06/08/17 / #20170160077

Method of inspecting an object with a vision probe

A method of inspecting a hole in an object with at least one camera probe mounted on a coordinate positioning machine includes: for a plurality of different viewpoints obtaining at least one image of a silhouette of the hole from a first end of the hole, so as to obtain a set of silhouette images of the hole, the hole being backlit so as to form the silhouette, and using the set of silhouette images of the hole to infer at least part of the boundary of the hole at a given height.. . ... Renishaw Plc

06/01/17 / #20170155229

Laser device

A frequency tuneable laser device includes a cavity mode selector and a cavity tuning arrangement. The cavity mode selector has a frequency response with a selection feature that is alignable in frequency with a selected cavity mode of the laser device. ... Renishaw Plc

05/18/17 / #20170135778

Neurosurgical apparatus

Neurosurgical apparatus has a guidance device having a guide tube and a neurosurgical instrument for insertion into the guide tube. The inner surface of the guide tube is arranged, for example profiled, to at least partially engage the outer surface of the neurosurgical instrument when inserted therein. ... Renishaw Plc

05/04/17 / #20170120330

Additive manufacturing apparatus and a flow device for use with such apparatus

An additive manufacturing apparatus including a build chamber in which an object is built and a flow device. The flow device comprises a body having a coand{hacek over (a)} surface and a passageway connectable to a pressurised gas source. ... Renishaw Plc

02/16/17 / #20170045357

Calibration of measurement probes

A machine tool is provided with a toolsetting probe mounted on a bed or table, and a workpiece-sensing probe which can be mounted in a movable spindle. Both probes are calibrated by using them to make measurements against each other. ... Renishaw Plc

01/19/17 / #20170014904

Selective solidification apparatus and methods

This invention concerns a selective solidification apparatus including a build chamber, a build platform lowerable in the build chamber, a wiper for spreading powder material across the build platform to form successive powder layers of a powder bed, an energy beam unit for generating an energy beam for consolidating the powder material, a scanner for directing and focussing the energy beam onto each powder layer and a processor for controlling the scanner. The processor is arranged to control the scanner to scan the energy beam across the powder bed to consolidate powder material either side of the wiper when the wiper is moving across the powder bed and to scan the energy beam across at least one of the powder layers during two or more strokes of the wiper across the powder bed.. ... Renishaw Plc








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