摘要:
A method for producing a component layer-by-layer includes: placing in a loading zone a vat; loading the vat into a build zone of an additive manufacturing apparatus utilizing a vat transport mechanism; executing a build cycle, including: positioning a stage relative to the build surface so as to define a layer increment in the resin; selectively curing a resin contained within the vat using application of radiant energy in a specific pattern so as to define the geometry of a cross-sectional layer of the component; moving the vat and the stage relatively apart so as to separate the component from the build surface; unloading the vat from the build zone into an unloading zone; and repeating the steps of placing, loading, executing the build cycle, and unloading, for a plurality of layers, using a plurality of vats in series, until the component is complete.
摘要:
An apparatus for fabricating a polishing pad includes a conveyor belt, a casting station to form a layer of the polishing pad and to deliver the layer of the polishing pad onto the conveyor belt, a printing station including one or more printheads configured to deposit one or more layers to form a polishing pad, a motor to drive the conveyor belt, and an energy source. The one or more printheads include a plurality of nozzles configured to eject droplets of a liquid polishing pad material precursor on the layer formed by the casting station. The motor drives the conveyor belt while the one or more printheads eject the droplets such that droplets provide a layer of polishing pad material precursor. The energy source at least partially cure the pad material precursor to form a solidified layer of polishing pad material.
摘要:
The present invention provides an additive manufacturing apparatus (100) for manufacturing a product (250) comprising a container (101) for holding a radiation-curable liquid (103), a build platform (105) having a build surface (107) for holding a product (250) being manufactured during a manufacturing process, the build platform (105) being movable relative to the container (101) in a predetermined direction, a radiation source (102) for providing hardening radiation (131) to selectively solidify radiation-curable liquid (103) in the container (101) by exposure to form the product (250); and is characterized in that the additive manufacturing apparatus (100) further comprises at least one temperature element (221) that is integrated in the building platform (105) with the purpose of generating or removing heat from the build surface (107) and/or the product (250), a controller for causing the temperature element (221) to generate or remove heat from the build surface (107) and/or the product (250) until the product (250) releases from the build surface (107). A corresponding method is also provided. A build platform (105) is also provided.
摘要:
Method and system of fused deposition modeling an object comprising fused deposition modeling the object of a first fusible material (104); fused deposition modeling at least one heating element from a second fusible material comprising electromagnetic radiation absorptive material (105); exposing the heating element to electromagnetic radiation; wherein the fused deposition modeling the object and the fused deposition modeling the at least one heating element are performed by alternatively depositing layers of the object and the at least one heating element. Use of electromagnetic radiation absorptive material in fused deposition modeling.
摘要:
A method of forming a three-dimensional object, comprising: providing a carrier (18, 418) and an optically transparent member having a build surface, said carrier (18, 418) and said build surface defining a build region therebetween; filling said build region with a polymerizable liquid, continuously or intermittently irradiating said build region with light through said optically transparent member to form a solid polymer from said polymerizable liquid, continuously or intermittently advancing (e.g., sequentially or concurrently with said irradiating step) said carrier (18, 418) away from said build surface to form said three-dimensional object from said solid polymer, said optically transparent member comprising a flexible layer (414, 514, 614) having upper and lower opposing sides, wherein the flexible layer (414, 514, 614) upper side defines the build region, the method further comprising forming a region of reduced pressure adjacent the flexible layer (414, 514, 614) lower side.