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：US11104121B2

公开(公告)日：2021-08-31

申请号：US16838095

申请日：2020-04-02

Applicant: RENISHAW PLC

Inventor： Ben Ian Ferrar

IPC: B22F10/322 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153 ,  B29C64/268 ,  B29C64/364 ,  B29C64/20 ,  B22F10/20 ,  B23K26/342 ,  B22F3/10 ,  B29C64/386 ,  B22F10/30 ,  B22F10/28 ,  B22F10/32 ,  B22F10/00

Abstract: A method of selecting a scanning sequence of a laser beam in a selective laser solidification process, in which one or more objects are formed layer-by-layer by repeatedly depositing a layer of powder on a powder bed and scanning the laser beam over the deposited powder to selectively solidify at least part of the powder layers, includes determining an order in which areas should be scanned by: projecting a debris fallout zone that would be created when solidifying each area based on a gas flow direction of a gas flow passed over the powder bed; determining whether one or more other areas to be solidified fall within the debris fallout zone; and selecting to solidify the one or more other areas that fall within the debris fallout zone before solidifying the area from which the debris fallout zone has been projected.

公开(公告)号：US10399145B2

公开(公告)日：2019-09-03

申请号：US14897152

申请日：2014-06-11

Applicant: RENISHAW PLC

Inventor： David Roberts McMurtry ,  Geoffrey McFarland ,  Nicholas John Weston ,  Ben Ian Ferrar

IPC: B22F3/105 ,  B29C64/386 ,  B33Y30/00 ,  B33Y50/02 ,  G02B26/02 ,  G02B26/10 ,  B29C64/153 ,  B33Y40/00

Abstract: An additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus includes a build chamber containing a working area, a plurality of high energy beams for consolidating material deposited in the working area in layers and an optical unit for controlling transmission of the high energy beams onto material in the working area. The optical unit includes a plurality of independently controllable optical elements each optical element for controlling transmission of at least one of the high energy beams onto the material in the working area, the optical unit movable in the build chamber.

公开(公告)号：US10335901B2

公开(公告)日：2019-07-02

申请号：US14896161

申请日：2014-06-10

Applicant: RENISHAW PLC

Inventor： Ben Ian Ferrar ,  Ceri Brown

IPC: B23K26/342 ,  B23K26/06 ,  B23K26/082 ,  B23K26/144 ,  B22F3/105 ,  B29C64/153 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

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 scanning zones overlap.

公开(公告)号：US20240337592A1

公开(公告)日：2024-10-10

申请号：US18750156

申请日：2024-06-21

Applicant: Renishaw PLC

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

IPC: G01N21/27 ,  B22F10/00 ,  B22F10/28 ,  B22F10/31 ,  B22F10/36 ,  B22F10/366 ,  B22F10/368 ,  B22F12/41 ,  B22F12/44 ,  B22F12/49 ,  B22F12/90 ,  B29C64/153 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G01J3/28 ,  G01N21/71

CPC classification number: G01N21/274 ,  B22F10/00 ,  B22F10/28 ,  B22F12/44 ,  B22F12/49 ,  B22F12/90 ,  B29C64/153 ,  B29C64/268 ,  G01J3/28 ,  G01N21/718 ,  B22F10/31 ,  B22F10/36 ,  B22F10/366 ,  B22F10/368 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G01N2201/06113 ,  Y02P10/25

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：US11752694B2

公开(公告)日：2023-09-12

申请号：US17386695

申请日：2021-07-28

Applicant: RENISHAW PLC

Inventor： Ben Ian Ferrar

IPC: B22F3/10 ,  B29C64/182 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153 ,  B29C64/268 ,  B29C64/364 ,  B29C64/20 ,  B22F10/28 ,  B22F10/322 ,  B33Y50/02 ,  B23K26/342 ,  B29C64/386 ,  B22F10/32 ,  B22F10/00 ,  B22F12/70 ,  B22F10/80 ,  B22F10/30

CPC classification number: B29C64/182 ,  B22F3/101 ,  B22F10/28 ,  B22F10/322 ,  B23K26/342 ,  B29C64/153 ,  B29C64/20 ,  B29C64/268 ,  B29C64/364 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F10/00 ,  B22F10/30 ,  B22F10/32 ,  B22F10/80 ,  B22F12/70 ,  B29C64/386 ,  Y02P10/25

Abstract: A method of selecting a scanning sequence of a laser beam in a selective laser solidification process, in which one or more objects are formed layer-by-layer by repeatedly depositing a layer of powder on a powder bed and scanning the laser beam over the deposited powder to selectively solidify at least part of the powder layers, includes determining an order in which areas should be scanned by: projecting a debris fallout zone that would be created when solidifying each area based on a gas flow direction of a gas flow passed over the powder bed; determining whether one or more other areas to be solidified fall within the debris fallout zone; and selecting to solidify the one or more other areas that fall within the debris fallout zone before solidifying the area from which the debris fallout zone has been projected.

公开(公告)号：US09669583B2

公开(公告)日：2017-06-06

申请号：US14179021

申请日：2014-02-12

Applicant: RENISHAW PLC

Inventor： Ben Ian Ferrar

IPC: B29C67/00 ,  B22F3/10 ,  B22F3/105

CPC classification number: B33Y50/02 ,  B22F3/101 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2003/1059 ,  B23K26/342 ,  B29C64/153 ,  B29C64/20 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  Y02P10/295

Abstract: 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.

公开(公告)号：US09630363B2

公开(公告)日：2017-04-25

申请号：US14179021

申请日：2014-02-12

Applicant: RENISHAW PLC

Inventor： Ben Ian Ferrar

IPC: B29C67/00 ,  B22F3/10 ,  B22F3/105

Abstract: 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.

公开(公告)号：US12044618B2

公开(公告)日：2024-07-23

申请号：US17079652

申请日：2020-10-26

Applicant: RENISHAW PLC

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

IPC: B22F3/105 ,  B22F10/00 ,  B22F10/28 ,  B22F10/31 ,  B22F12/44 ,  B22F12/49 ,  B22F12/90 ,  B23K26/02 ,  B29C64/153 ,  B29C64/268 ,  G01J3/28 ,  G01N21/27 ,  G01N21/71 ,  B22F10/36 ,  B22F10/366 ,  B22F10/368 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: G01N21/274 ,  B22F10/00 ,  B22F10/28 ,  B22F12/44 ,  B22F12/49 ,  B22F12/90 ,  B29C64/153 ,  B29C64/268 ,  G01J3/28 ,  G01N21/718 ,  B22F10/31 ,  B22F10/36 ,  B22F10/366 ,  B22F10/368 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G01N2201/06113 ,  Y02P10/25

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：US11478856B2

公开(公告)日：2022-10-25

申请号：US16409911

申请日：2019-05-13

Applicant: RENISHAW PLC

Inventor： Ben Ian Ferrar ,  Ceri Brown

IPC: B22F12/00 ,  B29C64/153 ,  B23K26/082 ,  B23K26/144 ,  B23K26/342 ,  B23K26/06 ,  B22F10/10 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

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.