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Method and apparatus for producing parts by selective sintering

  • US 5,017,753 A
  • Filed: 06/22/1990
  • Issued: 05/21/1991
  • Est. Priority Date: 10/17/1986
  • Status: Expired due to Term
First Claim
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1. An apparatus for producing a part comprising:

  • beam means for selectively emitting a directed energy beam;

    structure for providing a target area for producing the part;

    means for dispensing powder into said target area including,a drum,means for moving the drum from one end of the target area to the other end, andmeans for counter-rotating the drum;

    means for directing air flow through the target area to moderate powder temperature; and

    control means for moving the aim of the beam and for modulating the beam means to selectively sinter within defined boundaries a layer of powder dispensed in said target area,the control means being operable to effect selective sintering of sequential layers of powder within respective defined boundaries to produce a part comprising a plurality of layers sintered together.

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