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    • 7. 发明专利
    • Rapid prototyping method and apparatus using the V-cad data
    • 空值
    • JP4346021B2
    • 2009-10-14
    • JP2003520566
    • 2002-08-14
    • 独立行政法人理化学研究所
    • 究 加瀬整 大森正博 安齋昭武 牧野内英夫 田代
    • B29C67/00B22F3/16G06F17/50
    • B29C64/386B29C64/153B33Y40/00B33Y50/00B33Y50/02B33Y70/00
    • V-CAD data is prepared by dividing external data 12 consisting of boundary data of an object into rectangular parallelepiped cells 13 having boundary planes orthogonal to each other in accordance with octree division and separating the respective divided cells into internal cells 13a positioned on the inner side of the object and boundary cells 13b including a boundary face, and a modeling unit quantity of a prototyping material 7 is changed in accordance with sizes of the internal cell 13a and the boundary cell 13b of a modeling portion. The prototyping material 7 is a resin, lumber powder, a low-fusing-point metal, metal powder, ceramics powder or a mixture of a binder and one of these materials, and its modeling unit quantity is set in such a manner that the modeling unit quantity is smaller than a capacity of a corresponding cell and does not protrude from the boundary plane of the cell. As a result, by using the V-CAD data, a program for rapid prototyping can be simplified, and a model production time can be greatly reduced.
    • 通过将由对象的边界数据构成的外部数据12分割为具有根据八叉树分区彼此正交的边界面的长方体单元13,并将各分割单元分离成位于内侧的内部单元13a来准备V-CAD数据 包括边界面的物体和边界单元13b以及原型材料7的建模单位量根据建模部分的内部单元13a和边界单元13b的尺寸而改变。 原型材料7是树脂,木材粉末,低熔点金属,金属粉末,陶瓷粉末或粘合剂与这些材料之一的混合物,并且其建模单位数量被设定为使模型 单元数量小于对应单元的容量,并且不从单元的边界面突出。 因此,通过使用V-CAD数据,可以简化用于快速成型的程序,并且可以大大降低模型生产时间。