Method and apparatus for production of three-dimensional objects
First Claim
1. A method for producing a three-dimensional object by solidifying successive layers of said object within a bath of a liquid material by directing electromagnetic radiation onto said material,said method comprisinga) solidifying partial regions of said layer so as to leave narrow liquid intermediate regions between adjacent ones of said partial regions while at the same time connecting said partial regions to corresponding partial regions of a previously solidified layer so as to form multilayered cells,b) interconnecting adjacent ones of said partial regions of said layer by solidifying narrow connecting regions bridging said intermediate regions in the form of connecting webs, andc) thereafter solidifying said intermediate regions between said partial regions for completing the solidification of said object.
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Accused Products
Abstract
In a method for producing a three-dimensional object by successive solidification of superposed layers of the object a deformation of the object caused by shrinkage during the solidification shall be reduced. To this end first of all respective partial regions (6a . . . 6k) of a layer are solidified and simultaneously connected with underlying partial regions of the previously solidified layer to form multilayered cells and thereafter adjacent partial regions of the same layer are interconnected by solidifying narrow connecting regions (8a . . . 8p). The intermediate regions (7) between the individual partial regions are solidified by post-curing.
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Citations
10 Claims
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1. A method for producing a three-dimensional object by solidifying successive layers of said object within a bath of a liquid material by directing electromagnetic radiation onto said material,
said method comprising a) solidifying partial regions of said layer so as to leave narrow liquid intermediate regions between adjacent ones of said partial regions while at the same time connecting said partial regions to corresponding partial regions of a previously solidified layer so as to form multilayered cells, b) interconnecting adjacent ones of said partial regions of said layer by solidifying narrow connecting regions bridging said intermediate regions in the form of connecting webs, and c) thereafter solidifying said intermediate regions between said partial regions for completing the solidification of said object.
Specification