Method for producing a laminated object and apparatus for producing the same
First Claim
1. A method of producing a laminated mold for casting having three dimensions and formed of a plurality of piled solid layers, which method comprises the steps of:
- (a) depositing on a setting surface a deposited layer of a material capable of becoming hardened and forming a solid layer when irradiated by a laser beam, said material being formed of grains or a powder covered with thermosetting resin and;
(b) irradiating said deposited layer with a laser beam to form a solid layer having a two-dimensional horizontal surface extending in an X-direction and a Y-direction transverse to the X-direction, wherein the irradiating step includes;
(i) covering said deposited layer with a mask having a first portion not to be penetrated by said laser beam and a second portion to be penetrated by said laser beam, and(ii) scanning said laser beam on said deposited layer covered with said mask in such a manner that said laser beam depicts a continuous wave trace which extends beyond the periphery of said second portion by moving said laser beam in said Y-direction with a Y-rotating mirror for moving said laser beam in said Y-direction while repeating oscillations of said laser beam in said X-direction with an X-rotating mirror for oscillating said laser beam in said X-direction, so that said laser beam is moved to penetrate said second portion of said mask and to form the continuous wave trace on said deposited layer; and
(c) repeating steps (a) and (b) alternately to form said laminated mold for casting.
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Accused Products
Abstract
A method for producing a laminated object repeats a depositing step and an irradiating step alternatively. The irriating step comprises the operations of: covering a deposited layer with a mask having a pattern configuration for penetrating the laser beam; and scanning the lader beam on the desposited layer covered with the mask in such a manner that the laser beam depicts an irradiated continous wave trace being wider than the pattern configuration of the mask, by moving the laser beam in the Y-direction with a Y-rotating mirror, while repeating oscillations of the laser beam in the X-direction with a X-rotating nirror, The laminated object may be a casting mold.
37 Citations
7 Claims
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1. A method of producing a laminated mold for casting having three dimensions and formed of a plurality of piled solid layers, which method comprises the steps of:
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(a) depositing on a setting surface a deposited layer of a material capable of becoming hardened and forming a solid layer when irradiated by a laser beam, said material being formed of grains or a powder covered with thermosetting resin and; (b) irradiating said deposited layer with a laser beam to form a solid layer having a two-dimensional horizontal surface extending in an X-direction and a Y-direction transverse to the X-direction, wherein the irradiating step includes; (i) covering said deposited layer with a mask having a first portion not to be penetrated by said laser beam and a second portion to be penetrated by said laser beam, and (ii) scanning said laser beam on said deposited layer covered with said mask in such a manner that said laser beam depicts a continuous wave trace which extends beyond the periphery of said second portion by moving said laser beam in said Y-direction with a Y-rotating mirror for moving said laser beam in said Y-direction while repeating oscillations of said laser beam in said X-direction with an X-rotating mirror for oscillating said laser beam in said X-direction, so that said laser beam is moved to penetrate said second portion of said mask and to form the continuous wave trace on said deposited layer; and (c) repeating steps (a) and (b) alternately to form said laminated mold for casting. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification