0626215-宋金峰-毕业论文.doc

南京林业大学本科毕业设计(论文) 题目: 直接制版机成像滚筒的测试与分析学院: 轻工科学与工程学院专业: 印刷工程学号: 0626215 学生姓名: 宋金峰指导教师: 邢洁芳职称: 副教授二O一O 年六月十日 1 摘要本毕业设计是关于 CTP 转子动平衡的研究,主要的研究内容是机械转子系统的理论分析,滚筒的监测与诊断,现场动平衡分析系统的建立,现场动平衡分析研究,以及对于不平衡转子的诊断和调节。实验分为模拟实验和现场实验,采用 ZXF-F16D 振动数据采集与分析系统,分别收集和分析实验数据,初步得出了 CTP 滚筒动平衡的结论。通过实验和数据分析综合,得到的主要实验结论: 1 、波形图中含有大量低频和高频的周期信号。转子系统在运行过程中,来自两个方向轴承约束力明显不同,轴承支承刚度不均是造成振动波形不对称的主要原因。 2、转频幅值谱图很复杂,转频分量不明显,2倍频分量幅值明显大于转频幅值。同时,其他高阶分量,可以忽略, 2倍频幅值占主要成份。 3 、采用影响系数法可以快速有效地实现转子平衡校正,更适于 CTP 旋转件的现场动平衡。 4 、采用非接触电涡流传感器测轴振,可减少轴承故障振动的干扰,并快速、准确实现不平衡故障的诊断。系统应设计为 3 个模块,即故障监测诊断、数据管理和动平衡计算分析模块。可实现转子系统故障监测诊断,同时提高诊断与现场动平衡效率。 5 、转子的不平衡是产生转子 1 倍频振动的主要原因, 转子的动平衡又是解决转子不平衡的主要手段; 但是在进行转子动平衡之前一定要认真分析转子振动特征,确保转子动平衡可靠实施。关键词: CTP 滚筒;动平衡;转子;故障诊断 2 Abstract The graduation project is the research on the CTP rotor balancing, the main research content is mechanical rotor system, theoretical analysis, monitoring and diagnosis of roller, field balancing Analysis System, field balancing analysis, and for the unbalanced rotor diagnosis and adjustment. Experiment was divided into simulation and field experiment, using ZXF-F16D vibration data acquisition and analysis system, experimental data collection and analysis were initially obtained CTP drum balancing conclusions. The experiment and data analysis prehensive, the main experimental results obtained: 1、 Waveform contains a large number of low and high frequency of the periodic signal. Rotor system during operation, the direction of bearings from two distinctly different binding, Bearing Stiffness inequality is the main cause vibration waveform asymmetry. 2、 Transfer frequency amplitude spectra plex, change-ponent is not obvious, 2 octave ponent magnitude larger than the amplitude change. Meanwhile, other high-ponents can be ignored, two ponents of total harmonic amplitude. 3、 Using the influence coefficient method can quickly and efficiently the rotor balance correction, more suitable for CTP Field Balancing of rotating parts. 4、 Using non-contact eddy current sensors measure