摘要
为了解决球头铣刀切削力模型在应用中瞬时几何边界条件提取的问题,提出一种以B-rep和CSG为基础的几何边界参数提取方法。该方法考虑切除体是刀具实体与毛坯实体的交集,包含几何边界条件信息,首先通过实体Boole运算得到切除体,然后从切除体上识别包含切削范围信息的表面,在其上进行几何边界参数的提取。提取结果与解析计算结果比较,证明该方法能够准确、便捷地取得模型求解中需要的几何边界条件,使物理模型的应用更贴近生产实际。
A method is presented to extract instantaneous geometric boundary parameters based on B-rep and CSG for use in ball-end cutting force models. The method identifies the boundary information as the intersections of the cutter and the blank solids during the material removal process. The removed material is first described by solid boolean operations, with the surfaces containing the cutting range information then identified. The geometric boundary parameters are then extracted from these surfaces. Simulations showed that the method accurately and rapidly obtains the boundary conditions required by the physical models. The method can enable physical models to more closely represent real products.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第2期254-257,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(59705018)
关键词
铣削
切深区间
切角区间
仿真
milling process
cutting depth range
cutting angle range
simulation
