摘要:
A method for manufacturing a three-dimensional shaped object, comprising: (i) forming a powder layer on a base plate by a sliding movement of a squeegee blade, followed by forming a solidified layer by irradiating a predetermined portion of the powder layer with a light beam, thereby allowing sintering of the powder of the predetermined portion or melting and subsequent solidification thereof; and (ii) forming another solidified layer by newly forming a powder layer on the resulting solidified layer, and then irradiating another predetermined portion of the new powder layer with the light beam, steps (i) and (ii) being repeatedly performed, wherein machining is performed at least once on an outer surface of a shaped object precursor obtained during manufacturing, and after machining, at least one solidified layer is formed, and followed by upper face machining to remove a raised solidified portion generated at a peripheral edge of the solidified layer.
摘要:
In a method for producing a three-dimensionally shaped object, a powder layer is formed by feeding a powdery material to a substrate and a solidified layer is formed by irradiating a light beam on a specified portion of the powder layer to sinter or melt the specified portion of the powder layer. A three-dimensionally shaped object having a plurality of solidified layers laminated one above another is obtained by repeating the powder layer formation and the solidified layer formation. In the method, a stress is preliminarily applied to the substrate to reduce the amount of deformation of the substrate after production of the shaped object prior to the powder layer forming step.
摘要:
There is provided a method for manufacturing a three-dimensional shaped object, the method comprising the repeated steps of: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing a sintering of the powder in the predetermined portion or a melting and subsequent solidification thereof; and (ii) forming another solidified layer by newly forming a powder layer on the resulting solidified layer, followed by the irradiation of a predetermined portion of the powder layer with the light beam, wherein a heater element is disposed on the solidified layer during the repeated steps (i) and (ii), and thereby the heater element is situated within the three-dimensional shaped object.
摘要:
Disclosed is a mold for resin injection molding that can realize rapid heating or cooling. A resin injection molding mold includes a cavity mold and a core mold and is produced on a base plate by metal photofabrication. The cavity mold is provided with a cavity warm water circuit for allowing warm water for heating to flow and a cavity cold water circuit for allowing cold water for cooling to flow. The core mold is also provided with a core warm water circuit and a core cold water circuit. The core mold includes an air blowing passage for feeding warm air or cold air into a resin molding part and a suction passage (36) for sucking a gas within the resin molding part. The resin molding part side of the air blowing passage and the suction passage is formed of a low-density shaping part that has a low metallic powder sintered density and is permeable to gas. Warm air or cold air can be blown through the low-density shaping part, whereby rapid heating or cooling of the resin injection molding mold can be realized.
摘要:
A lamination shaping apparatus has a powder layer preparing means and an optical unit which irradiates a light beam to an intended portion of a powder layer so as to sinter or melt for solidifying the portion into a cured layer. Preparation of the powder layer and curing of the cured layer are repeated to fabricate a three-dimensional object in which a plurality of the cured layers are laminated and integrated. The apparatus includes a fixed base carrying thereon the powder layer and the cured layer, an elevator frame surrounding a periphery of the fixed base, and driving means for driving the elevator frame to move vertically. The powder layer is formed within a space above the base and surrounded by an interior surface of the elevator fame such that the powder layer (cured layer) can be stacked on the base with the base being kept at a fixed position, thereby facilitating to fabricate a precisely shaped object.
摘要:
A three-dimensional object is made by repeating a process. An optical beam is irradiated on a predetermined portion of a powdery layer to form a sintered layer. A new powdery layer is formed on a surface of the sintered layer. An optical beam is irradiated on a predetermined portion of the new powdery layer to form a new sintered layer united with the underlying sintered layer. Because a portion of the sintered layer that is higher than a predetermined level is removed as occasion demands, the abnormally sintered portion on the sintered layer can be removed, making it possible to prevent stoppage of the shaping process, which may be caused by the abnormally sintered portion.
摘要:
A method for producing a three-dimensionally shaped object, includes a powder layer forming step of supplying a powdery material to form a powder layer; a solidified layer forming step of irradiating a light beam on a specified portion of the powder layer to sinter or melt the powder layer into a solidified layer; and a step of repeating the powder layer forming step and the solidified layer forming step to integrally laminate the solidified layer to produce the three-dimensionally shaped object. The solidified layer is integrally formed on an upper surface of a substrate and the thickness of the substrate is decided by a maximum horizontal cross-sectional area of the shaped object. The substrate is made of a material having the Young's modulus greater than that of the shaped object.
摘要:
The invention relates to a method of making a three-dimensional object, comprising the steps of: (a) forming a powder material layer (10) of inorganic material; (b) irradiating an optical beam (L) on a predetermined portion of the powder material layer (10) to form a first sintered layer (11) and integrate the first sintered layer (11) with a second sintered layer (11) just below the first sintered layer (11); (c) repeating the steps (a) and (b) to form a sintered block (B) united with a plurality of the first and second sintered layers (11), the sides of the sintered block (B) including a concave portion (g); (d) removing an excess portion (17) from a surface of the sintered block (B); and (e) repeating the steps (c) and (d) with respect to the sintered block (B) from which the excess portion (17) is removed, in order to make a target shape of a three-dimensional object united with a plurality of the sintered blocks (B).
摘要:
There is provided a method for manufacturing a three-dimensional shaped object. The method of the present invention comprises the steps of: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing sintering of the powder of the predetermined portion or melting and subsequent solidification thereof; and (ii) forming another solidified layer by newly forming a powder layer on the resulting solidified layer, and then irradiating another predetermined portion of the new powder layer with the light beam, the steps (i) and (ii) being repeatedly performed in a chamber; wherein a localized gas flow is provided in the chamber, and at least a part of a fume generated by the irradiation of the light beam is entrained by the localized gas flow.
摘要:
Manufacturing equipment for a metal powder sintered component includes: a powder layer forming portion that supplies metal powder to form a powder layer; a light beam irradiator that irradiates a give point on the powder layer with light beams to sinter the powder layer and thus form a sintered layer; and a cutter that cuts a shaped object in which sintered layers are integrally stacked. The light beam irradiator has a scan head X shaft that moves a scan head in X direction parallel to a surface irradiated with light beams and a scan head Y shaft that moves the scan head in Y direction, so that the scan head moves in a direction parallel to the irradiated surface to perform irradiation with light beams. Since the scan head moves parallel to the irradiated surface, the irradiated area can be increased. Since the irradiation height can be small, the accuracy of light beam scanning can be enhanced.