摘要
针对传统数控机床运动控制精度低和调整速度慢的问题,提出一种基于图像处理的数控机床运动控制系统。该系统主要由图像采集、图像分析和运动控制三部分组成,使用图像处理技术确定数控机床的加工起点,并根据分析结果控制刀具的运行。首先使用图像分析算法确定对刀点坐标,并由运动控制卡根据坐标信息驱动电机转动,再将刀具移动到工件的正上方实现水平方向对准;然后根据图像处理获取的对刀距离控制机床z轴的下降距离,实时监控刀具的下降情况,实现垂直方向的对准。仿真与测试结果表明,所提出的系统不仅具有较快的控制速度,还能确保控制精度。
In allusion to the problems of low motion control precision and slow adjustment speed of the traditional numerical control（NC）machine tool,a motion control system of NC machine tool based on image processing is proposed. The system is composed of three parts of image acquisition,image analysis,and motion control. The image processing technology is used to determine the starting point of NC machine tool processing and control knife operation according to the analysis results. The coordinates of the knife-setting point are determined by using the image analysis algorithm,the motor rotation is driven by the motion control card according to the coordinate information,and the knife is moved right above the workpiece,so as to realize horizontal alignment. According to the knife setting distance obtained from image processing,the Z-axis fall distance of the machine tool is controlled to monitor the knife drop situation in real time,so as to realize vertical alignment. The simulation and test results show that the proposed system not only has a fast control speed,but also guarantees the control precision.
作者
王鹏
彭琰举
李阿为
王莹
WANG Peng;PENG Yanju;LI Awei;WANG Ying(School of Mechanical Engineering, Xi＇an Aeronautical University, Xi＇an 710077, China)
出处
《现代电子技术》
北大核心
2018年第12期44-46,51,共4页
Modern Electronics Technique
基金
陕西省教育厅科研计划项目资助(17JK0396)~~
关键词
数控机床
运动控制
对刀
图像处理
图像采集
Canny边缘提取
NC machine tool
motion control
knife setting
image processing
image acquisition
Canny edge extraction
