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US 10,946,582 B2Granted
Method for producing a three-dimensional shaped product
AssigneeMatsuura Machinery Corporation
InventorsKouichi Amaya, Seiichi Tomita
Life of this patent
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Abstract
A method for producing a three-dimensional shaped product based on dispersion of powder by a squeegee and irradiation of the powder layer with a laser beam or electron beam, including the steps of installing a suction device that suctions fumes generated from the powder layer, in a state surrounding the entire periphery of a shaping table, and selecting a suction reference position at the shortest distance from the irradiation reference position currently moved and worked in a prescribed time range.
Claims20
A method for producing a three-dimensional shaped product which employs a forming process in a shaping region, comprising the steps of:
- dispersion of powder by a squeegee on a shaping table disposed within a chamber,
- irradiation of powder layers formed by the dispersion with a laser beam or an electron beam,
- setting a suction device that communicates with a collector that collects fumes generated from the powder layers due to the irradiation and that sucks the fumes, at an upper side of the shaping table and surrounding an entire periphery of the shaping table in reference to a horizontal direction,
- situating suction zones of the suction device that achieve independent suction work by the suction device at equal intervals with a suction reference position specified at a center location of each suction zone,
- setting a common operating time range for each suction zone,
- one of:
- setting multiple resting irradiation reference positions based on regularly arranged positions at equal intervals in a two-dimensional direction for each powder layer,
- setting multiple moving irradiation reference positions in irradiation positions that move within each powder layer,
- with unit of moving time where the moving time is a time range set for each suction reference position from an initial irradiation position,
- selecting, after judging an irradiation reference position P that is currently irradiated among the multiple resting or moving irradiation reference positions, the suction reference position at the shortest distance from the irradiation reference position P, and
- sending an operational command for suction to the selected suction zone corresponding to the suction reference position.
8 more elements
A method for producing a three-dimensional shaped product which employs a forming process in a shaping region, comprising the steps of:
- dispersion of powder by a squeegee on a shaping table disposed within a chamber,
- irradiation of each powder layer formed by the dispersion with a laser beam or an electron beam,
- setting a suction device that communicates with a collector that collects fumes generated from the powder layers due to the irradiation, and that sucks the fumes, at an upper side of the shaping table and surrounding an entire periphery of the shaping table in reference to a horizontal direction,
- situating suction zones that achieve independent suction work by the suction device at equal intervals with a suction reference position being specified at a center location of each suction zone,
- setting a common operating time range for each suction zone,
- one of:
- setting multiple resting irradiation reference positions based on regularly arranged positions at equal intervals in a two-dimensional direction for each powder layer, and after judging an irradiation reference position P that is currently irradiated among the multiple resting irradiation reference positions, setting an adjacent irradiation reference position P′ calculated by a time within the time range according to a traveling direction and traveling speed of an irradiation position at the irradiation reference position P, or
- setting multiple moving irradiation reference positions for the irradiation position moving within each powder layer with a unit of moving time where the moving time is a time range set for each suction reference position from an initial irradiation position, and after judging an irradiation reference position P that is currently irradiated among the multiple moving irradiation reference positions, setting the irradiation reference position P and an adjacent irradiation reference position P′ that is expected to move from the irradiation reference position P through a time based on the time range, and sending an operational command for suction to a suction zone corresponding to each suction reference position at a position on a side opposite from the adjacent irradiation reference position P′ based on a straight line at the irradiation reference position P which is perpendicular to a straight line connecting the irradiation reference positions P and P′.
5 more elements
Dependencies are inferred from the claim text.