摘要
为避免机床热变形对加工精度的影响,针对高速机械主轴发热量大、传动链中热量不均衡等特点,提出了一种基于SINUMERIK数控系统的主轴热变形实时补偿方法。以某卧式加工中心作为研究对象,利用主轴热变形分析仪进行机床主轴热变形检测,采集检验棒在X、Y、Z这3个方向的实时变化并生成曲线。在主轴系统中布局5个温度传感器实时采集主轴内部温度,采用线性回归方法建立机械主轴的热误差模型,结合SINUMERIK数控系统提供的同步功能及温度补偿功能,实现对刀尖位置的实时补偿,保障了机床的加工精度。
In order to avoid the influence of thermal deformation of machine tool on machining accuracy,and in view of the characteristics of high-speed mechanical spindle with large heat output and unbalanced heat in transmission chain.A real-time compensation method of spindle’s thermal elongation based on SINUMERIK CNC system is proposed.A horizontal machining center is taken as the research object.The thermal elongation of the machine’s spindle is detected by the spindle thermal deformation analyzer.The real-time changes of the tool in the directions of X,Y and Z are collected and the curves are generated.Five temperature sensors are laid out in the spindle system to collect the internal temperature of the spindle system in real time.The thermal error model of the mechanical spindle is established by using linear regression method.Combined with the synchronous function and temperature compensation function provided by SINUMERIK CNC system,the position of tool is compensated in real time and the machining accuracy of the machine tool is effectively guaranteed.
作者
潘世禄
赵国波
PAN Shilu;ZHAO Guobo(Digital Manufacturing Center/CNC Processing Plant,AVIC Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610091,CHN)
出处
《制造技术与机床》
北大核心
2021年第5期119-123,共5页
Manufacturing Technology & Machine Tool
关键词
机械主轴
主轴热变形
同步功能
实时补偿
SINUMERIK数控系统
mechanical spindle
thermal deformation of spindle
synchronous function
real-time compensation
SINUMERIK CNC system
