摘要
基于Linux的PC+可编程I/O(接口)体系的开放式数控系统,设计了加工轨迹仿真的通用模型。针对毛坯仿真建模时,离散化精度和仿真速度之间的矛盾,提出一种离散模型建立的改进方法,即在均匀网格离散基础上对模型曲率较大处细化网格间距,并以数控铣削加工为例,针对该通用模型和改进的离散矢量建模法研发了三轴数控铣削加工仿真功能单元,实现了加工前试切模拟和轨迹错误检查。通过实际加工零件,验证了所开发加工仿真功能单元的正确性和通用模型在本开放式数控系统中的适用性。
In this paper,a general model for the machining trace simulation is designed for the open CNC system based on the architecture of“Linux PC+programmable I/O(interface)”.When the blank simulation is modelled,there is a contradiction between the discretization precision and the simulation speed.An improved method for establishing the discrete model is proposed,which is used to refine the grid spacing on the basis of the uniform mesh discrete.The numerical control milling is taken for example,based on the general model and the improved discrete vector modeling method,a three-axis CNC milling simulation function unit is developed,which is used to do the pre-machining test simulation and track error checking.The validity of the simulation function unit and the applicability of the general model in this open CNC system are verified by machining parts.
作者
陈平斌
林述温
陈坤火
CHEN Pingbin;LIN Shuwen;CHEN Kunhuo(School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350116,China)
出处
《机械制造与自动化》
2020年第1期71-74,81,共5页
Machine Building & Automation
基金
福建省科技重大专项(2016HZ01010004)。
关键词
开放式数控系统
轨迹仿真
功能单元模型
改进离散矢量建模
open CNC system
trajectory simulation
functional unit model
improved discrete vector modeling
