并联机床设计综述.docVIP

并联机床设计综述 摘 要 并联机床(Parallel Machine Tools)，又称并联结构机床(Parallel Structured Machine Tools)、虚拟轴机床(Virtual Axis Machine Tools)，也曾被称为六条腿机床、六足虫(Hexapods)。并联机床是近年来国内外机床研究的热点，它具有自由度多、刚度高、精度高、传动链短、制造成本低等优点。但其也不足之处，其中位置正解复杂就是关键的一条，还有就是铰链的制造精度。 并联机床是集机械、气动（液压）、控制技术于一体的典型的机电一体化设备，它容易实现“六轴联动”，有望成为21世纪高速轻型数控加工的主力设备。本课题结合本院实验室建设，设六自由度并联机床机构，使其能根据工艺要求进行加工。提高学生的工程素质、创新能力、综合实践及应用能力。 关键词：并联机床；步进电动机；空间变换矩阵；滚珠丝杠螺母副 Abstract PMT (Parallel Machine Tools), also known as the parallel structure machine (Parallel Structured Machine Tools), Virtual Axis Machine Tool, has also been known as the six-legged machine, six-legged insects (Hexapods).Parallel machine is in recent years the domestic machine tool research hot spot, it has multiple degrees of freedom, high rigidity, high precision, short transmission chain, with low manufacturing cost.But its shortcomings, in which the forward solution of position of a complex is the key. 6-SPS telescopic type parallel machine tool is Stewart machine tools, a deformable structure form, it is the main characteristics of dynamic, static platform on the 6joints are respectively distributed on the same plane, and form the shape similarity. Parallel machine is a mechanical, pneumatic (hydraulic), control technology in one of the typical electrical and mechanical integration equipment. Parallel machine is easy to achieve six-axis, is expected to become the 21st century, the main high-speed light CNC machining equipment. The combination of hospital laboratory construction project, located six-DOF parallel machine tool sector, so that it can be processed according to process requirements. Improve their engineering quality, innovation, comprehensive practice and application of skills. Keywords: parallel machine；Stepping motor；space transformation matrix；ball screw pair 1 课题背景与意义? 为了提高对生产环境的适应性，满足快速多变的市场需求，近年来全球机床制造业都在积极探索和研制新型多功能的制造装备与系统，其中在机床结构技术上的突破性进展当属90年代中期问世的并联机床(ParallelMachineTool)，又称虚(拟)轴机床(VirtualAxisMachineTool)或并联运动学机器(ParallelKinematicsMachine)。并联机床实质上是