摘要
提出了以四自由度空间并联机构作为主进给机构 ,辅以双向移动工作台实现多坐标数控加工的一种新型并联机床的配置方案。推导了并联机床位置、速度逆解模型 ,设计了面向该并联机床的CNC系统方案。构造了由刀具轨迹计算、位置与速度逆解模型和PVT细插补模式相结合的NURBS曲面直接插补算法 。
A configuration scheme for a new type of parallel machine tool (PMT) is proposed. In this scheme, a 4-dof spatial parallel mechanism is used as the main feeding mechanism, with the assistance of a two-way moving worktable, multi-coordinates numerical controlled machining can be realized. Inverse displacement analysis model and inverse kinematic analysis model are derived, scheme of CNC system for PMT is designed. NURBS surface direct interpolation algorithms, which are composed of cutter path calculation, inverse displacement analysis model and inverse kinematic analysis model, PVT fine interpolation mode, are constructed. Key techniques in implementing the scheme of CNC system are discussed.
出处
《机械科学与技术》
CSCD
北大核心
2004年第8期934-937,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
四川省应用基础研究项目 ( 0 2GY0 2 9 0 3 2
0 2GY0 2 9 0 3 3 )资助
