摘要
重型落地镗铣床因自身尺寸大、结构复杂且易受多热源影响导致其产生较大的热变形,使得主轴刀尖点产生偏移,降低乃至严重恶化机床加工精度。本文针对重型落地镗铣床开展了不同环境温度和工况的热特性实验,依据实验结果对常见的热误差模型进行对比分析得到了一种鲁棒性更强、预测效果好的模型,为重型落地镗铣床热误差控制提供参考依据。
Owing to its large structure and ranges of movement, heavy type milling boring machine is suscepti-ble to external and internal thermal source, which will transfer to frame cause distortion. As a resuh of super-position of those deformations, it causes offsets to tip point and machining precision will be reduced. In this pa-per the thermal characteristics experiments of environment and different work conditions were conducted. Ac-cording to analyze of the experiments, two kinds of usual thermal error model were compared to find which oneis more robust and accurate and provide a reference for thermal error modeling.
出处
《重型机械》
2015年第5期10-16,21,共8页
Heavy Machinery
基金
国家科技重大专项(2013ZX04013-011)
关键词
重型落地镗铣床
环境温度
热误差建模
多点温度
heavy type boring and milling machine
environment temperature
thermal error modeling
multi-point temperature
