Three-dimensional molding equipment
a three-dimensional molding and equipment technology, applied in auxillary shaping apparatus, manufacturing tools, additive manufacturing processes, etc., can solve the problems of high-energy radiation, shorten molding time, and need to be concentrated, and achieve the effect of improving molding efficiency
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examples 1
[0060]According to a first embodiment illustrated in FIG. 1, a plurality of boundary lines L1, L2 and L3 each having an endless ring shape is formed on an upper surface of each of the powder layers, separated inward from a contour of a region to be molded E by different distances. The plurality of regions divided by these boundary lines L1, L2 and L3 is defined as a plurality of divided regions A, B, C and D allocated with a plurality of light beam or electron beam scanning units 20 (In FIG. 1, illustration with molding parts Pa, Pb, Pc, and Pd is omitted).
[0061]Further, according to this embodiment, a radiation amount per unit area of the light beam or electron beam scanning unit 20 corresponding to a divided region close to the contour of the region to be molded E is controlled to be different from the radiation amount per unit area of the light beam or electron beam scanning unit 20 corresponding to a divided region close to a center portion of the region to be molded E.
[0062]Mor...
example 2
[0069]According to a second embodiment illustrated in FIG. 2, a plurality of the divided regions A, B, C and D are set, and two light beam or electron beam scanning units 20, 20 corresponding to two adjacent divided regions A and B (B and D, D and C, or C and A) are configured such that a radiated region of a light beam or an electron beam by one of the light beam or electron beam scanning units 20 overlaps with the radiated region of the light beam or the electron beam by the other light beam or electron beam scanning unit 20, at a portion close to a boundary of the two adjacent divided regions (In FIG. 2, illustration with molding parts Pa, Pb, Pc, and Pd is omitted).
[0070]In other words, as illustrated in FIG. 2, overlapped portions ab, bd, dc and ca in which the radiated regions of the light beam or the electron beam are overlapped are formed in the portion close to the boundary of the two adjacent divided regions A and B (B and D, D and C, or C and A).
[0071]Therefore, according...
example 3
[0073]According to a third embodiment illustrated in FIG. 3, the number of divided regions used for manufacturing a three-dimensional shaped molding object is set larger than the number of light beam or electron beam scanning units 20 (In FIG. 3, illustration with molding parts Pa, Pb, Pc, and Pd is omitted).
[0074]A plurality of divided regions A, B, C and D, the number of which is larger than the number of the light beam or electron beam scanning units 20, is suitably allocated with the mentioned plurality of the light beam or electron beam scanning units 20 (four in an example in FIG. 3).
[0075]According to the example in FIG. 3, each of three divided regions A, two divided regions B, one divided region C, and two divided regions D is allocated with one of the light beam or electron beam scanning units 20. It should be noted that regions not indicated by the reference sign in FIG. 3 are not allocated with any of the light beam or electron beam scanning units 20.
[0076]Therefore, acc...
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