摘要
主要针对要求高精度、快响应的数控车床主轴调速系统的设计要求,通过对变频调速的基本原理和变频方式的分析,提出了变频电机与变频器组合的调速方案。根据数控车床实验系统的运行条件,计算车床的切削力和主轴电机的功率,为选择实验系统的主轴变频调速电机提供依据。根据选定的变频电机的特性,提出了变频器的选择原则,进而选择了额定容量和额定电流均与变频电机匹配的,且采用矢量控制高性能型通用电压型变频器。最后,简要介绍了数控车床实验平台的设计思路。研究结果表明,选择的变频电机与变频器配置合理且其调整性能和启动转矩均能满足实验系统的要求。
Mainly for the demand of designing high-accuracy,fast-response CNC lathe spindle variable speed system,a speed control proposal of fitting frequency motor and transducer together was raised via analyzing the basic principles and frequency of the variable frequency speed control.According to the CNC lathe experimental system operating conditions,the lathe cutting force and spindle motor power were calculated,evidence for choosing spindle adjustable frequency motor of experiment system was provided.In the light of the selected motor character,the basic principle of choosing transducer was proposed,then a transducer was selected which matched the frequency motor in the rated capacity and rated current.It is a high-performance and general-purpose voltage transducer using vector control.Finally,briefly the design ideas for CNC lathe experimental platform were described.The frequency motor and transducer are reasonable,and its adjustable performance and starting torque can meet the requirements of the experimental system.
出处
《机电工程》
CAS
2011年第6期712-714,共3页
Journal of Mechanical & Electrical Engineering
关键词
变频调速
变频电机
变频器
数控车床
variable frequency speed control
adjustable frequency motor
transducer
CNC lathe
