摘要
产时插补是高速数控系统中实时性要求最高的环节，也是提高控制环节节拍和精度的“瓶颈”。自从CNC软件诞生之日起，大量文献都致力于研究提高插补精度的优化算法，但是由于可以利用的计算时间十分有限，即一个插补周期一般为1－10ms，高速切削达到0．2ms，所以很难保证算法的稳定性和可靠性。本文提出了一种从根本上解决问题的方案：OLICNC高速数控系统通过离线插补，在线跟随的策略，达到提高控制系统的控制精度的目的。文章对OLCNC高速数控系统的工作原理，系统结构，系统与传统数控相比的特点和关键技术作了较为详尽的论述，OLICNC数控系统不仅应用于新型高速加工机床，而且也是改造现有机床经济而实用的选择。
In high speed CNC, real-time interpolating is the most important control pitch in the real - time - ability and is the choke point that increases control speed and control accuracy. From the presence of CNC software interpolating, many literatures about the optimizing algorithms which are trying to increase interpolating accuracy, however , it is difficult to ensure their stability and reliability because of the short interpolating time, for examples, 1 ~ 10ms for traditional CNC and 0.2ms for high speed CNC. In this article, a new high speed CNC system is proposed, which is called OLICNC system. It can radically solve the above problems traditional CNC systems possesse. The principle, the system structure, the characteristic relative to traditional CNC system and the key technologies of the OLICNC system are elaborately addressed in the article.
出处
《机床与液压》
北大核心
2002年第2期52-54,51,共4页
Machine Tool & Hydraulics
关键词
数控系统
高速切削
插补
PC机
高速加工
CNC
HSC
Numerical control system
High speed machining
Interpolating
