CAJ | 학술논문

针对数控机床主轴热误差有线监测方法存在的布线困难和温度测点布置优化问题，提出一种基于热敏区域黄金分割布点和利用温度传感标签实现机床温度分布监测及信号无线传输的新方法。设计由数字式温度传感器 DS18B20、微处理器MSP430、无线射频通信模块 NRF905集成的温度传感标签，可通过无线射频通信将温度信号及对应标签地址信息无线传输给上位机，通信协议简单，能耗要求低；根据机床主轴有限元分析模型采用黄金分割法确定了热敏感布点区域，以解决传统经验布点存在数据冗余、可信度不强、测试条件不确定最优等问题；利用温度传感标签和激光位移传感器构建监测系统并采用正交试验法进行试验测试，数据极差分析和回归分析结果表明该系统稳定可靠、实时处理能力强，构建的回归模型也有较好的预测能力。
침대수공궤상주축열오차유선감측방법존재적포선곤난화온도측점포치우화문제，제출일충기우열민구역황금분할포점화이용온도전감표첨실현궤상온도분포감측급신호무선전수적신방법。설계유수자식온도전감기 DS18B20、미처리기MSP430、무선사빈통신모괴 NRF905집성적온도전감표첨，가통과무선사빈통신장온도신호급대응표첨지지신식무선전수급상위궤，통신협의간단，능모요구저；근거궤상주축유한원분석모형채용황금분할법학정료열민감포점구역，이해결전통경험포점존재수거용여、가신도불강、측시조건불학정최우등문제；이용온도전감표첨화격광위이전감기구건감측계통병채용정교시험법진행시험측시，수거겁차분석화회귀분석결과표명해계통은정가고、실시처리능력강，구건적회귀모형야유교호적예측능력。
To solve problems of complex cabling and temperature sensor placement optimization for CNC machine tool spindle thermal error by wired monitoring method, a new layout method of measuring points is proposed by golden section of heat sensitive area and the temperature distribution monitoring and wireless signal transmission are achieved by using temperature sensor tag. The temperature sensor tag is designed by integrating digital temperature sensor DS18B20, microprocessor MSP430, radio frequency communication module NRF905. The temperature signal and tag address information were transmitted to computer by radio frequency communication, the communication protocol is simple and energy consumption is low. According to the finite element analysis model of the machine spindle, the heat sensitive area is determined by golden section method. It can solve problems of traditional experience method such as data redundancy, unreliability, uncertain optimal test conditions and etc. The monitoring system is built by using temperature sensor tag and laser displacement sensor, and the thermal error experiment was done by the orthogonal test. The results of range analysis and regression analysis show that the system has the characteristics of reliability, strong real-time processing capability, and the regression model also has good prediction ability.