公开(公告)号：US20110071790A1

公开(公告)日：2011-03-24

申请号：US12764589

申请日：2010-04-21

申请人： Toshihiro NUMAUCHI ,  Masaaki Hagiwara ,  Hiroaki Nakazato ,  Katsumi Takezaki

发明人： Toshihiro NUMAUCHI ,  Masaaki Hagiwara ,  Hiroaki Nakazato ,  Katsumi Takezaki

IPC分类号： G06F15/00 ,  G01B21/20

CPC分类号： G01B21/20 ,  B29C45/7626

摘要： An unmoldability determination apparatus includes: a normal line calculation unit that calculates a normal line extending from a point on each of surfaces constituting a three-dimensional shape of a molded product; an opposite direction component determination unit that determines whether or not the normal line calculated on each surface has an opposite direction component which is a directional component opposite to a mold release direction of a mold of the molded product prescribed for the each surface; a reach determination unit that, when a surface having a point at which the normal line having the opposite direction component is calculated is a projection surface, determines whether or not there is another surface on the molded product which one of a line extending from the projection surface in the mold release direction and a line extending in a direction opposite to the mold release direction reaches; and an unmoldability determination unit that, when there is another surface which both of the line extending from the projection surface in the mold release direction and the line extending in the direction opposite to the mold release direction reaches, determines the projection surface to be unreleasable from the mold only by movement of the mold in the mold release direction, thus determining the projection surface to be unmoldable.

摘要翻译： 不可变形确定装置包括：法线计算单元，其计算从构成模制品的三维形状的每个表面上的点延伸的法线; 确定在每个表面上计算的法线是否具有与针对每个表面规定的模制品的模具的脱模方向相反的方向分量的相反方向分量的相反方向分量确定单元; 距离判断单元，当具有计算具有相反方向分量的法线的点的表面是投影表面时，确定模制品上是否存在从突出部延伸的一条线 在脱模方向上的表面和沿着脱模方向相反的方向延伸的线到达; 以及不可变形确定单元，当存在从脱模方向上从突出表面延伸的线和沿与脱模方向相反的方向延伸的线的另一表面确定投影表面不可从 模具只能通过模具在脱模方向上移动，从而确定投影表面是不可模塑的。