THREE-DIMENSIONAL MOLDING APPARATUS AND THREE-DIMENSIONAL MOLDING METHOD

• Main Author: SAKURAI SHIGEKI
• Format: Patent
• Language: English; Japanese
• Published: 25.07.2016
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To form a three-dimensional molded object with high accuracy by considering variations in thickness of materials and dimensional changes by heating.SOLUTION: A three-dimensional molding apparatus is provided, which includes: varying means capable of varying a relative position of a stage with respect to a heating section in a stacking direction of constituent layers; first measuring means for measuring a thickness of a constituent layer in the stacking direction prior to stacking; second measuring means for measuring a thickness of a stacked molded object stacked on the stage; and control means described below. The control means controls the varying means in such a manner that the thickness of the stacked molded object after a target constituent layer is stacked is coincident with or close to a target thickness value of a stacked molded object individually set to respond to the number of stacked layers, by using a first measurement value of the thickness of the target constituent layer measured by the first measuring means and using a second measurement value of the thickness of the stacked molded object before the target constituent layer is stacked measured by the second measuring means, and then adjusts a relative position of the stage with respect to the heating section upon stacking the target constituent layer.SELECTED DRAWING: Figure 1 【課題】材料の厚さのばらつき、加熱による寸法変化を考慮して、精度よく立体造形物を形成する。【解決手段】加熱部に対するステージの相対位置を対応層の積層方向で変更可能な変更手段と、積層前の対応層の積層方向の厚さを測定する第１測定手段と、ステージ上に積層された積層造形物の積層方向の厚さを測定する第２測定手段と、第１測定手段により測定された注目対応層の厚さの第１測定値と、第２測定手段により測定された、注目対応層を積層する前の積層造形物の厚さの第２測定値と、を用いて、注目対応層を積層した積層造形物の厚さが、積層数に対応してそれぞれ設定されている積層造形物の厚さの目標値に一致するか又は近付くように、変更手段を制御して、注目対応層を積層するときの、加熱部に対するステージの相対位置を調整する制御手段と、を備える。【選択図】図１