THREE-DIMENSIONAL MOLDING METHOD

• Main Authors: ICHIMURA MAKOTO, AMAYA KOICHI, ISHIMOTO KOSUKE
• Format: Patent
• Language: English; Japanese
• Published: 22.08.2016
• 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; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a configuration of a three-dimensional molding method so as not to cause trouble in travelling of a powder feeding blade even when a protruding sintered part is generated in a narrow sintered region.SOLUTION: In a three-dimensional molding method, a fine sintered region 11 in which any one of a cross-sectional area or an average diameter in a horizontal direction, a molding width, and an undercut angle at an end part is a prescribed quantity or less, is pre-stored by a control system, or determined by the control system in a sintering step, and if a protruding sintered part 12 is formed above the sintered region 11, all or part of the protruding sintered part 12 is cut off by a rotary cutting tool 3, and thereby no trouble in travelling of a powder feeding blade 2 occurs.SELECTED DRAWING: Figure 10 【課題】狭小な焼結部分において盛り上がり焼結部が発生したとしても、粉末供給用ブレードの走行に支障が生じないような三次元造形方法の構成を提供すること。【解決手段】水平方向の断面積又は平均径、造形幅、端部におけるアンダーカット角度が何れも所定量以下となるような微細な焼結領域１１を、事前に制御システムによって記憶するか、又は焼結工程において、制御システムが判断することによって、当該焼結領域１１の上側に盛り上がり焼結部１２が形成された場合には、回転切削工具３によって当該盛り上がり焼結部１２の全部又は一部を切除することによって、粉末供給用ブレード２の走行に支障が発生していない三次元造形方法。【選択図】図１０