公开(公告)号：US20170326646A1

公开(公告)日：2017-11-16

申请号：US15527961

申请日：2015-11-17

Applicant: RENISHAW PLC

Inventor： Michael Joseph MCCLELLAND ,  Ravi Guttamindapalli ASWATHANARAYANASWAMY ,  Ceri BROWN

IPC: B22F3/105 ,  B33Y10/00 ,  B28B1/00 ,  B29C67/00

CPC classification number: B22F3/1055 ,  B22F2003/1057 ,  B28B1/00 ,  B29C64/153 ,  B29C67/00 ,  B33Y10/00 ,  Y02P10/295

Abstract: 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. The scan path may be a border scan path extending around a border of one of the selected areas of the layer.

公开(公告)号：US20200070247A1

公开(公告)日：2020-03-05

申请号：US16677031

申请日：2019-11-07

Applicant: RENISHAW PLC

Inventor： Michael Joseph MCCLELLAND ,  Ceri BROWN ,  Ravi Guttamindapalli ASWATHANARAYANASWAMY

IPC: B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153

Abstract: An additive manufacturing apparatus including a build chamber, build platform lowerable in the chamber so layers of flowable material can successively form across the platform, laser for generating a laser beam, scanning unit for directing the laser beam onto each layer to selectively solidify the material and a processor for controlling the scanning unit. The processor controls the scanning unit directs the laser beam to solidify a selected area of material by advancing the laser beam many times along a scan path. On each pass, the laser beam solidifies spaced apart sections of the scan path, each subsequent pass solidifying sections that are located between sections solidified on a previous pass. The processor controls the scanning unit to direct the laser beam to solidify selected area of material by solidifying sub-millimetre sized sections of non-continuously area and in an order such that consecutively solidified sections are spaced apart.

公开(公告)号：US20180290241A1

公开(公告)日：2018-10-11

申请号：US15527676

申请日：2015-11-17

Applicant: RENISHAW PLC

Inventor： Michael Joseph MCCLELLAND ,  Ceri BROWN ,  Ravi Guttamindapalli ASWATHANARAYANASWAMY

IPC: B23K26/354 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/34 ,  B23K26/082

Abstract: An additive manufacturing apparatus including a build chamber, build platform lowerable in the chamber so layers of flowable material can successively form across the platform, laser for generating a laser beam, scanning unit for directing the laser beam onto each layer to selectively solidify the material and a processor for controlling the scanning unit. The processor controls the scanning unit directs the laser beam to solidify a selected area of material by advancing the laser beam many times along a scan path. On each pass, the laser beam solidifies spaced apart sections of the scan path, each subsequent pass solidifying sections that are located between sections solidified on a previous pass. The processor controls the scanning unit to direct the laser beam to solidify selected area of material by solidifying sub-millimetre sized sections of non-continuously area and in an order such that consecutively solidified sections are spaced apart.

公开(公告)号：US20180345414A1

公开(公告)日：2018-12-06

申请号：US15778422

申请日：2016-12-21

Applicant: RENISHAW PLC

Inventor： Ramkumar REVANUR ,  Ceri BROWN ,  Michael Joseph MCCLELLAND ,  Mark Samuel KIRBY

IPC: B23K26/354 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/34

CPC classification number: B33Y50/00 ,  B22F2003/1056 ,  B22F2003/1057 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  Y02P10/295

Abstract: A method of building a workpiece in an additive manufacturing process, in which the workpiece is built through layer-by-layer solidification of material. The method includes, for a bridging layer in which an area to be solidified bridges material solidified as separate islands in an immediately preceding layer, first, solidifying separated portions of the area, each separated portion connected with a different one of the islands of the preceding layer, and then solidifying material between the separated portions to join the separated portions together.

公开(公告)号：US20180141123A1

公开(公告)日：2018-05-24

申请号：US15574979

申请日：2016-06-03

Applicant: RENISHAW PLC

Inventor： Ramkumar REVANUR ,  Michael Joseph MCCLELLAND

IPC: B22F3/105 ,  B33Y10/00 ,  B33Y50/02 ,  B23K26/34 ,  B23K26/354 ,  G05B19/4099

CPC classification number: B22F3/1055 ,  B22F2003/1057 ,  B23K26/34 ,  B23K26/354 ,  B29C64/386 ,  B33Y10/00 ,  B33Y50/00 ,  B33Y50/02 ,  G05B19/4099 ,  G05B2219/49007

Abstract: 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. The processor is arranged to determine scan data for slices and/or slices of the part to be built in the additive manufacturing process and cause the display to display scan data and/or slices that has been determined whilst determining scan data for other ones of the slices and/or other ones of the slices from the geometric data.

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。