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在一些RP工艺中,给各种形状的零件添加支撑对于完成零件的制造和保证零件的精度非常重要,但目前尚无很好的自动添加支撑算法能够应用于一般的情况.为此提出两种自动添加支撑算法:曲线追踪法和标志位追踪法.前者主要是在切片前基于追踪得到的采样点利用蒙面法重构支撑面片;而后者则是在切片后通过多边形的布尔运算逐层计算各切层端面的实际轮廓和综合轮廓.这两种算法形成了一种新的自动添加支撑方案.实例证明了这种方案的有效性和便利性.
In some RP processes, it is important to add support to various shapes of parts to make the parts and to ensure the accuracy of the parts. However, there are currently no good automatic addition support algorithms that can be applied to the general situation. Automatic support algorithm is added: the curve tracing method and flag tracing method, the former mainly uses the masking method to reconstruct the support patches based on the tracked sampling points before slicing, and the latter uses the polygon boolean operation to layer by slice Calculating the actual contour and the overall contour of each slice face, these two algorithms form a new automatic adding support scheme.The examples prove the effectiveness and convenience of this scheme.