公开(公告)号：US20190329323A1

公开(公告)日：2019-10-31

申请号：US16507522

申请日：2019-07-10

Applicant: RENISHAW PLC

Inventor： David Roberts MCMURTRY ,  Geoffrey MCFARLAND ,  Nicholas John WESTON ,  Ben Ian FERRAR

IPC: B22F3/105 ,  B29C64/386 ,  B29C64/153 ,  G02B26/02 ,  G02B26/10

Abstract: This invention concerns an additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus comprises a build chamber 101 containing a working area, a plurality of high energy beams 133, 233 for consolidating material deposited in the working area in layers and an optical unit 135 for controlling transmission of the high energy beams onto material in the working area. The optical unit 135 comprises a plurality of independently controllable optical elements 141, 241 each optical element 141, 241 for controlling transmission of at least one of the high energy beams onto the material in the working area, the optical unit 135 movable in the build chamber 101.

公开(公告)号：US20170189961A1

公开(公告)日：2017-07-06

申请号：US15461743

申请日：2017-03-17

Applicant: RENISHAW PLC

Inventor： Ben Ian FERRAR

IPC: B22F3/10 ,  B23K26/342 ,  B22F3/105 ,  B33Y10/00 ,  B33Y50/02

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：US20160136730A1

公开(公告)日：2016-05-19

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 ,  G02B26/10 ,  G02B26/02

CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2003/1059 ,  B29C64/153 ,  B29C64/386 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  G02B26/02 ,  G02B26/101 ,  Y02P10/295

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.

Abstract translation: 一种用于通过层状固结材料建造物体的添加剂制造装置。 该装置包括一个包含工作区域的构建室，用于将沉积在工作区域中的材料固结的多个高能束，以及用于控制高能量束传送到工作区域中的材料的光学单元。 光学单元包括多个可独立控制的光学元件，每个光学元件用于控制至少一个高能量光束传输到工作区域中的材料上，光学单元可在构建室中移动。

公开(公告)号：US20210039167A1

公开(公告)日：2021-02-11

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 ,  G01N21/71 ,  G01N21/27 ,  G01J3/28 ,  B29C64/153 ,  B29C64/268

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：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：US20160306901A1

公开(公告)日：2016-10-20

申请号：US15103028

申请日：2014-12-16

Applicant: RENISHAW PLC

Inventor： Iain AINSWORTH ,  Geoffrey David RAYNER ,  Michael Joseph MCCLELLAND ,  Ramkumar REVANUR ,  Ben Ian FERRAR

IPC: G06F17/50 ,  B33Y50/00 ,  B29C67/00

CPC classification number: G06F17/50 ,  B29C64/386 ,  B29C64/40 ,  B33Y50/00

Abstract: A method and apparatus for generating geometric data are to be used in the building of an object using a layer-by-layer additive manufacturing process. The method includes providing object data defining the object, identifying from the object data one or more regions of a surface of the object to be supported during the additive manufacturing process and, for the or each region, identifying one or more supporting structures that will provide support for the region and generating an arrangement of supports within the region. A support location of each support of the arrangement relative to the other supports of the arrangement is derived from a location of the supporting structures.

Abstract translation: 用于生成几何数据的方法和装置将用于使用逐层添加剂制造过程的物体建造中。 该方法包括提供定义对象的对象数据，从对象数据中识别在添加制造过程期间待支持的对象的表面的一个或多个区域，以及为该区域或每个区域识别将提供的一个或多个支持结构 支持该地区，并在该区域内产生支持安排。 相对于布置的其他支撑件，布置的每个支撑件的支撑位置从支撑结构的位置导出。

公开(公告)号：US20160193696A1

公开(公告)日：2016-07-07

申请号：US14910399

申请日：2014-08-21

Applicant: RENISHAW PLC

Inventor： Geoffrey MCFARLAND ,  Ben Ian FERRAR

IPC: B23K26/342 ,  B23K26/32 ,  B23K26/00 ,  B22F3/00

Abstract: An additive manufacturing machine for building objects by layerwise melting of powder material includes a build chamber containing a build platform, a powder dispenser depositing the powder material in layers across the platform, a high energy beam selectively melting powder material in each layer and a control device controlling a property of the powder material given by build particles in the powder material below a specified upper particle size limit. A method includes controlling a property of the powder material given by build particles below a specified upper particle size limit. A method carries out successive builds, wherein in-between the builds, particles are added to or removed from the powder material to effect a property of the powder material given by build particles below a specified upper particle size limit. Further, adding or removing particles ensure that a sufficient proportion of micro build particles are present in the powder.

Abstract translation: 用于通过粉末材料的分层熔化来建造物体的添加剂制造机包括：包含构建平台的构建室，将粉末材料沉积在跨平台的层中的粉末分配器，每层中选择性地熔化粉末材料的高能量束和控制装置 控制由粉末材料中的构造颗粒给出的粉末材料的特性低于规定的上限粒径。 一种方法包括控制由构建颗粒给出的粉末材料的特性低于规定的上限粒度限度。 一种方法进行连续的构建，其中在构建之间，将颗粒添加到粉末材料中或从粉末材料中移除，以实现由构建颗粒给出的低于特定的上限粒度限度的粉末材料的性质。 此外，添加或除去颗粒确保粉末中存在足够比例的微结构颗粒。

公开(公告)号：US20210354197A1

公开(公告)日：2021-11-18

申请号：US17386695

申请日：2021-07-28

Applicant: RENISHAW PLC

Inventor： Ben Ian FERRAR

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

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：US20200230944A1

公开(公告)日：2020-07-23

申请号：US16838095

申请日：2020-04-02

Applicant: RENISHAW PLC

Inventor： Ben Ian FERRAR

IPC: B33Y50/02 ,  B29C64/153 ,  B29C64/20 ,  B33Y30/00 ,  B22F3/10 ,  B23K26/342 ,  B33Y10/00 ,  B22F3/105

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：US20160236279A1

公开(公告)日：2016-08-18

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

CPC classification number: B22F3/1055 ,  B22F2003/1057 ,  B29C64/153 ,  B29C64/20 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G01J3/28 ,  G01N21/274 ,  G01N21/718 ,  G01N2201/06113 ,  Y02P10/295

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.

Abstract translation: 本发明涉及通过粉末材料的分层固化来建造物体的激光凝固装置。 该装置包括一个包含构建平台的构建室，用于在构建平台上沉积粉末材料层的装置，用于引导激光束选择性地凝固每个粉末层的区域的光学单元和用于检测由 通过激光束在粉末固化期间形成的等离子体。 本发明还涉及一种用于检测由金属与另一激光束的相互作用产生的特征辐射的光谱仪。 使用光谱仪记录的光谱可用于凝固过程中的反馈控制。