公开(公告)号：US10898982B2

公开(公告)日：2021-01-26

申请号：US16069360

申请日：2017-01-10

Applicant: RENISHAW PLC ,  METROLOGY SOFTWARE PRODUCTS LIMITED

Inventor： Peter Russell Hammond ,  Christopher Leonard Copper

IPC: B23Q17/22 ,  G01B21/04 ,  G05B19/401

Abstract: A calibration device for a machine tool is described that includes a base attachable to a machine tool and a calibration artefact, such as a sphere of known radius. A deflection mechanism attaches the calibration artefact to the base and allows movement of the calibration artefact relative to the base when an external force is applied to the calibration artefact. The deflection mechanism also maintains the calibration artefact in a defined rest position relative to the base in the absence of an applied external force. A sensor is provided for sensing the extent of movement of the calibration artefact relative to the base. A method of using the device with a reference tool to accurately determine a position of a calibration artefact is also described.

公开(公告)号：US10890893B2

公开(公告)日：2021-01-12

申请号：US16220938

申请日：2018-12-14

Applicant: RENISHAW PLC

Inventor： Ramkumar Revanur ,  Rupesh Badole ,  Sanjay Dinde ,  Mayur Lankeshwar

IPC: G05B19/4099 ,  B33Y50/02

Abstract: An apparatus and methods for generating geometric data for use in an additive manufacturing process. The apparatus includes a processing unit. The processing unit may be arranged for receiving data defining surface geometry of a plurality of objects to be built together in an additive manufacturing process, providing a user interface that allows a user to define a location of each object within a common build volume and carrying out a slicing operation on at least one of the objects located in the common build volume independently from another one of objects located in the common build volume. The slicing operation determines sections of the at least one object to be built in the additive manufacturing process. In one embodiment, the objects are defined in a hierarchical data structure. Supports for supporting the objects during the build may be defined with reference to a 2-dimensional support cross-section.

公开(公告)号：US10850326B2

公开(公告)日：2020-12-01

申请号：US15024304

申请日：2014-09-23

Applicant: RENISHAW PLC

Inventor： Ian Robert Thomas Ashton ,  Stephan Kloss ,  Christopher Sutcliffe ,  Ben Ian Ferrar

IPC: B22F3/105 ,  G01N21/71 ,  G01N21/27 ,  G01J3/28 ,  B29C64/153 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: This invention concerns a laser solidification apparatus for building objects by layerwise solidification of powder material. The apparatus including a build chamber containing a build platform, a device for depositing layers of powder material on to the build platform, an optical unit for directing a laser beam to selectively solidify areas of each powder layer and a spectrometer for detecting characteristic radiation emitted by plasma formed during solidification of the powder by the laser beam. The invention also relates to a spectrometer for detecting characteristic radiation generated by interaction of the metal with the or a further laser beam. The spectra recorded using the spectrometer may be used for feedback control during the solidification process.

公开(公告)号：US20200262152A1

公开(公告)日：2020-08-20

申请号：US16760014

申请日：2018-11-07

Applicant: RENISHAW PLC

Inventor： John DARDIS ,  James Stephen GARRARD ,  Callum HEALEY

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/268 ,  B29C64/286

Abstract: A laser solidification apparatus for building objects by layerwise solidification of material. The laser solidification apparatus includes a build platform for supporting the object and a material bed, an optical module including a movable guiding element for directing the laser beam to solidify material of the material bed, and a detector module including a sensor for detecting radiation emitted from the material bed and transmitted to the sensor by the movable guiding element of the optical module. The detector module is removably mounted to the optical module.

公开(公告)号：US10670431B2

公开(公告)日：2020-06-02

申请号：US15749404

申请日：2016-09-08

Applicant: RENISHAW PLC

Inventor： Jason Slack ,  Richard James Bale

IPC: G01D5/244 ,  G01D5/347 ,  G01D5/38

Abstract: 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.

公开(公告)号：US20200149859A1

公开(公告)日：2020-05-14

申请号：US16495364

申请日：2018-04-17

Applicant: RENISHAW PLC

Inventor： Christian BROWN ,  Hugo George DERRICK

IPC: G01B5/00 ,  G01B5/012 ,  G01B21/04

Abstract: A positioning apparatus including a quill on which a probe apparatus can be mounted, at least one motor for positioning the quill in a substantially vertical dimension, and a pneumatic counterbalance mechanism for the quill. The positioning apparatus is configured, based on at least one factor relating to the quill, to automatically effect a change in the pneumatic counterbalance mechanism's pressure so as to thereby adapt the counterbalance force on the quill provided by the pneumatic counterbalance mechanism.

公开(公告)号：US10578418B2

公开(公告)日：2020-03-03

申请号：US14117536

申请日：2012-05-25

Applicant: Peter Kogej ,  Matija Jezersek ,  Janez Mozina ,  Ales Babnik

Inventor： Peter Kogej ,  Matija Jezersek ,  Janez Mozina ,  Ales Babnik

IPC: B23K26/36 ,  G01B7/14 ,  G01P3/487 ,  C21D1/09 ,  G01P3/486 ,  B41M5/26 ,  B23K26/03 ,  B23K26/06 ,  B23K26/067 ,  B23K26/00 ,  B23K26/361 ,  B23K26/359 ,  G01D5/347 ,  B23K103/00

Abstract: A method and apparatus are described for forming a pattern including one or more markings on a substrate. The method includes the step of forming each marking by locally heating the substrate, for example using a fibre laser. A step is also performed of monitoring the temperature of the substrate, e.g. using a temperature sensor, whilst each marking is being formed. The method may be used to form a magnetic encoder scale on a stainless steel substrate having a high content of martensitic material. The local heating causes the martensitic material to be transformed into austenitic material. An encoder scale made using the method is also described.

公开(公告)号：US20190283332A1

公开(公告)日：2019-09-19

申请号：US16341246

申请日：2017-11-10

Applicant: RENISHAW PLC

Inventor： Ceri BROWN ,  John DARDIS ,  Allan Christopher NORMAN

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/20 ,  G01B11/00

Abstract: A method of monitoring an additive manufacturing process, in which an object is built in a layer-by-layer manner by directing a laser beam using at least one movable guiding element of a scanner to solidify selected regions of a material bed. The method includes recording position values generated from a transducer measuring positions of the at least one movable guiding element, recording sensor values generated from a sensor for detecting radiation emitted from the material bed and transmitted to the sensor by the movable guiding element of the scanner, and associating each sensor value with a corresponding one of the position values.

公开(公告)号：US20190262946A1

公开(公告)日：2019-08-29

申请号：US16409911

申请日：2019-05-13

Applicant: RENISHAW PLC

Inventor： Ben Ian FERRAR ,  Ceri BROWN

IPC: B23K26/342 ,  B29C64/386 ,  B29C64/153 ,  B23K26/082 ,  B23K26/06 ,  B23K26/144 ,  B22F3/105

Abstract: A selective laser solidification apparatus including; a powder bed onto which powder layers can be deposited, at least one laser module for generating a plurality of laser beams for solidifying the powder material deposited onto the powder bed, a laser scanner for individually steering each laser beam to solidify separate areas in each powder layer, and a processing unit. A scanning zone for each laser beam is defined by the locations on the powder bed to which the laser beam can be steered by the laser scanner. The laser scanner is arranged such that each scanning zone is less than the total area of powder bed and at least two of the scanning zones overlap. The processing unit is arranged for selecting, for at least one powder layers, which laser beam to use to scan an area of the powder layer located within a region wherein the seaming zones overlap.

公开(公告)号：US20190226995A1

公开(公告)日：2019-07-25

申请号：US16373762

申请日：2019-04-03

Applicant: RENISHAW PLC

Inventor： Thomas Anthony MASON

IPC: G01N21/65 ,  G01J3/02 ,  G01J3/28 ,  G01J3/44

Abstract: This invention concerns spectroscopy apparatus comprising a light source arranged to generate a light profile on a sample, a photodetector having at least one photodetector element for detecting characteristic light generated from interaction of the sample with light from the light source, a support for supporting the sample, the support movable relative to the light profile, and a processing unit. The processing unit is arranged to associate a spectral value recorded by the photodetector element at a particular time with a point on the sample predicted to have generated the characteristic light recorded by the photodetector element at the particular time based on. relative motion anticipated to have occurred between the support and the light profile.