Apparatus for Producing Three-Dimensional Shaped Product

An apparatus for producing a three-dimensional shaped product in which the following steps are sequentially repeated:

• spraying one of a metallic and non-metallic powder on a surface of a base plate placed on an upper side of a vertically movable table in a shaping tank and having on the surface at least a material which can be adhered to the metallic or non-metallic powder upon solidification of the powder adjacent to the upper side by sintering and on the upper side of the table,
• subjecting an upper-side surface of the thus sprayed powder to planarization,
• irradiating one of electromagnetic waves and electron beams along a layer having a predetermined thickness to a region to be shaped which is located at an uppermost position, thereby forming a sintered layer, and
• cutting at least one of an end part and upper surface where sintering has been performed to effect molding,
• wherein the apparatus comprises:
• a frame body installed upright on the table,
• at least one of:
• a support projecting horizontally from the frame body and
• a projected streak provided at a top of the frame body to support the base plate,
• the base plate adapted to be supported by an arrangement so that a center of gravity of the base plate is present inside one of:
• a triangle formed by three locations and
• a quadrangle formed by four locations inside a region in which the base plate is supported,
• recesses provided at a back of the base plate are fitted into at least two elements selected from the group of supports and projected streaks, and
• on both sides of at least one recess in the longitudinal direction among these recesses, at least one of:
• a projected part provided on the support and projecting at least upward and
• a wall part of the frame body is contacted with a horizontally surrounding part of the base plate, thereby preventing the base plate from moving horizontally.