Additive production device and associated additive production method
A manufacturing equipment and corresponding technology, which can be used in processing and manufacturing, manufacturing tools, additive manufacturing, etc., and can solve problems such as difficulty in process control and unevenness.
Pending Publication Date: 2021-04-23
EOS ELECTRO OPTICAL SYST
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Problems solved by technology
In addition, process regulation is more difficult, since inhomogeneities in the total amount of absorbent can lead to inhomogeneities in the manufactured object or its surface
Finally, it is difficult to obtain objects in the desired color: dark absorbers, such as carbon black, lead to dark objects, which can only be implemented at increased cost when, for example, light objects in dark colors are required. object to recolor
Method used
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Embodiment Construction
[0053] In order to construct the object 2 , the laser sintering or laser melting device 1 shown as an example of an additive manufacturing device comprises a processing or construction chamber 3 with a chamber wall 4 . A construction container 5 which is open at the top and has a container wall 6 is arranged in the treatment chamber 3 . The working plane 7 is defined by the upper opening of the building container 5 , and the area of the working plane 7 inside the opening that can be used for building the object 2 is called the building area 8 .
[0054] Arranged in the construction container 5 is a carrier 10 displaceable in the vertical direction V, on which a base plate 11 is mounted, which closes the container 5 downwards and thus forms the bottom of the container. The substrate 11 may be a plate formed separately from the carrier 10 and fixed to the carrier 10 , or the substrate may be formed integrally with the carrier 10 . Depending on the powder and process used, a b...
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Abstract
The invention relates to an additive production device for producing a three-dimensional object, comprising a layer application device (16) for applying a building material layer to layer, an energy input device (20) which comprises a carbon monoxide laser (21) and a radiation supply device for supplying laser radiation of the carbon monoxide laser to points in each layer which are associated with the cross-section of the object in said layer, and a laser power modification device (27) which, in the event of an increase in laser power, is suitable to cause an increase in the power impinging on the building material per unit of area within a period of time, which is less than 300 [Mu]s and / or greater than 50 ns, and / or, in the event of a reduction in laser power, to cause a drop in the power impinging on the building material per unit of area within a period of time, which is less than 100 [Mu]s and / or greater than 100 ns.
Description
technical field [0001] The invention relates to an additive manufacturing device, a corresponding additive manufacturing method and a molded body produced by means of the manufacturing device and the manufacturing method. Background technique [0002] Additive manufacturing devices and corresponding methods (also referred to as “additive manufacturing”) are generally characterized in that in said manufacturing devices an object is manufactured layer by layer by solidifying an unshaped construction material. Curing can be achieved, for example, by supplying thermal energy to the build material by irradiating the build material with electromagnetic radiation or particle radiation, such as laser sintering or laser melting or electron beam melting. For example, in laser sintering or laser melting, the impingement area of a laser beam on a layer of build material is shifted over the layer at a position corresponding to the cross-section of the object in that layer of the object...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B29C64/153B29C64/268B29C64/273
CPCB29C64/153B29C64/273B29C64/268B33Y30/00Y02P10/25B33Y10/00B33Y70/00B29C64/286B28B1/001B29K2023/12B29K2025/06B29K2055/02B29K2069/00B29K2075/00B29K2077/00B29K2079/085
Inventor S·帕特诺斯特A·弗鲁斯
Owner EOS ELECTRO OPTICAL SYST