Abstract:
In one example, a non-transitory processor readable medium with instructions thereon that when executed cause an additive manufacturing machine to: form a first layer of build material; form a second layer of build material over the first layer; solidify build material in the second layer to form a slice; and form a barrier that is separable from the slice to prevent a coalescing agent in the second layer penetrating build material in the first layer.
Abstract:
An apparatus for generating a three-dimensional object is provided. The apparatus may include a housing having a surface defining a build receiver to receive differently-sized build modules or to receive a plurality of build modules. The build modules may each include a build chamber to receive a layer of build material from a build material distributor. The apparatus may include an agent distributor to selectively deliver a coalescing agent onto portions of the layer of build material to be received from the build material distributor such that when energy is applied to the layer the portions of the layer coalesce and solidify to form a slice of the three-dimensional object.
Abstract:
Additive manufacturing system for manufacturing a three dimensional object (10). A resin depositor (14) is present for depositing a layer of curable resin (6) on a first side (2a) of a foil substrate (2). The foil substrate (2) is supported by a transparent support plate (4), and a radiation source (5) is disposed for radiation curing the resin layer (6). A stage (12) is configured to hold a stacked arrangement of one or more cured resin layers representing at least in part the three dimensional object (10) and a positioning system is provided for relative positioning the foil substrate (2) and the stage (12). A masking screen (8) disposed substantially parallel to the resin layer (6) is present for blocking at least in part incident radiation on the resin layer (6) in correspondence with a cross sectional slice of the object (10).
Abstract:
The invention relates to a method for processing photopolymerizable material in order to construct a shaped body layer by layer, which method comprises: a) providing a tub having a base that is light-permeable at least in some regions, b) moving a construction platform to such a height that a layer of the photopolymerizable material having a specified thickness is defined between the lower face of the construction platform or, if already present, the lowest cured layer of the shaped body part formed thereon and the tub base, c) exposing the layer to light from below through the tub base in a locationally selective manner in order to cure the material layer in the desired shape, and d) repeating steps b) and c) until the last layer of the shaped body is formed. The photopolymerizable material has a viscosity of at least 20 Pa⋅s at room temperature (20 °C), and the layer of the photopolymerizable material is heated up in the tub to a temperature of at least 30 °C in order to lower the viscosity.
Abstract:
An additive manufacturing method comprises the steps of using an additive manufacturing technique to manufacture a product (10), at least part of which is supported by a support (12) formed integrally with the product (10) as part of the additive manufacturing technique, wherein the support (12) comprises a plurality of support beams (16) which, when finished, extend continuously to substantially interconnect the part with a support table (18), the beams (16) intersecting one another to form a lattice, and separating the support from the product, wherein the lattice is of irregular form.
Abstract:
In structural body formation, influence of misalignment between an in-process structural body layer and a support member layer on the shape accuracy is reduced. A method for manufacturing a structural body includes: forming a model forming layer from a liquid model forming material on an existing surface formed of at least one of prepared model forming layer and support member; while a defining surface of a defining member defining the upper surface of the model forming layer is in contact therewith; supplying a support material to fill between the existing surface and the defining surface and solidifying the support material into a support member to form a layer of the model forming layer and the support member; removing the defining member; and providing a layer of a model forming layer and a support member on the surface of the layer exposed by removal of the defining member.
Abstract:
Eine Vorrichtung zum Herstellen dreidimensionaler Modelle in einem kontinuierlichen Verfahren, umfassend eine Baufläche, die ein in Bewegungsrichtung erstes Ende und ein in Bewegungsrichtung zweites Ende aufweist, mindestens eine Dosiervorrichtungen und mindestens eine Verfestigungseinrichtung, wobei die Baufläche zur Beförderung von schweren Bauteilen ausgestaltet ist und die Bauteile im wesentlichen verzugsfrei über die Baufläche beförderbar sind sowie ein Verfahren hierzu.
Abstract:
The invention relates to a method for making an object, the method comprising forming a plurality of sections of the object, wherein the formation of each of the plurality of sections comprises applying at least two substances within an area having the shape of the section being formed, the at least two substances being able to chemically react upon contact with each other to form the section. The invention also relates to an apparatus for making an object, the apparatus comprising: an applicator arranged to apply at least two substances within an area having a shape of a section of the object being made, the at least two substances being able to chemically react upon contact with each other to form the section.
Abstract:
A method for calculating a support material volume, the method comprising generating a grid (112) of cells (114) for a tree data structure of a digital part (46), where the cells (114) define a plurality of cell arrays (120), and pinging the cells (114) of one of the cell arrays (120) until a cell (114) containing a subset of the tree data structure is reached or until each cell (114) in the cell array (120) is pinged, where if a cell (114) containing the subset of the tree data structure is reached, then designating the reached cell (114) and all remaining unpinged cells (114) in the cell array (120) as filled. The method also includes repeating the pinging step for each remaining cell array (120) to determine a total filled volume, and subtracting a volume of the digital part from the total filled volume to determine a support material volume.