Arrangement and method for producing a three-dimensional product
AssigneeArcam AB
InventorMorgan Larsson
Life of this patent
Estimating the term…
Abstract
An arrangement and method for production of three-dimensional bodies by successive fusing together of selected areas of a powder bed, which parts correspond to successive cross sections of the three-dimensional body, which method comprises the following method steps: application of powder layers to a work table, supplying energy from a radiation gun according to an operating scheme determined for the powder layer to said selected area within the powder layer, fusing together that area of the powder layer selected according to said operating scheme for forming a cross section of said three-dimensional body, a three-dimensional body being formed by successive fusing together of successively formed cross sections from successively applied powder layers.
Claims23
A method for production of three-dimensional bodies by successive fusing together of selected areas of a powder bed, which parts correspond to successive cross sections of the three-dimensional body, the method comprising:
- applying powder layers to a work table,
- determining an operating scheme for the powder layer,
- supplying energy from a radiation gun, according to the operating scheme, to said selected area within the powder layer, and
- fusing together that area of the powder layer selected according to said operating scheme for forming a cross section of said three-dimensional body, a three-dimensional body being formed by successive fusing together of successively formed cross sections from successively applied powder layers,
- where fusing includes dividing said selected area into a plurality of smaller part areas which each comprise an inner area I and an edge R and said determining an operating scheme includes determining priority for treating said plurality of smaller part areas such that heating of the selected area takes place in a relatively homogeneous way.
An arrangement for producing a three-dimensional product by successive fusing together of successively formed cross sections of said product, the arrangement comprising:
- a work table on which said three-dimensional product is built up,
- a powder dispenser that forms a powder bed by distributing a thin layer of powder on the work table,
- a radiation gun delivers energy to the powder, thereby fusing the powder together,
- beam guide that guides the beam emitted by the radiation gun over said powder bed such that radiation from said gun forms one of the cross sections of said three-dimensional product by fusing together parts of said powder bed, and
- a control computer that stores information about the successive cross sections of the three-dimensional product, which cross sections build up the three-dimensional product,
- where the control computer divides at least a selected area of each cross-section into a plurality of smaller part areas which each comprise an inner area I and an edge R, and controls the radiation gun and beam guide according to an operating scheme for forming each cross section of said three-dimensional product by determining a priority for delivering energy to said plurality of smaller part areas such that heating of the selected area takes place in a relatively homogeneous way.
Dependencies are inferred from the claim text.