水泵轴及叶轮口环径向跳动检测系统设计
发布时间：2018-11-27 17:10
【摘要】：随着工业生产的快速发展,水泵产品广泛应用于工业各个领域。水泵中机械传动是必不可少的,水泵轴和叶轮等结构作为水泵中重要的传动装置被广泛应用。因此,这些结构的相关指标将影响水泵的运行情况和技术指标。机械加工生产的工件与设计指标相比总会出现偏差,加工后零件的点、线、面等实际要素相对于理想要素总有误差,所能允许的这一误差的最大值即为形位公差。径向圆跳动公差就是形位公差中一项重要检测指标。这一指标,将使水泵运行时产生发热和震动等情况,甚至影响到水泵的使用寿命。检测这一指标,可以用于分析跳动形位误差,从而优化生产,提高质量。本系统采用具有无线传输方式的数显千分表、非接触测量的电涡流传感器和角度编码器作为检测仪表。在各个角度下,应用这些仪表采集水泵轴轴颈的电气径向圆跳动、叶轮口环的机械径向圆跳动量和角度值,从而建立极坐标。本文中采用西门子PLC作为下位机,接收处理电涡流传感器和角度编码器数据,通过OPC协议,上传电气跳动与角度值,接收上位机发来的千分表数值和命令。采用WinCC软件编写程序作为上位机,控制整个系统对测量数据的采集、显示以及数据存档,测量分辨力为1?m。通过对测量数据的分析发现安装偏心误差引起的正弦变化规律,并通过最小二乘拟合方法进行去偏心误差处理,并进行实验验证方法的可行性,实验数据在处理前跳动量为85?m,偏心误差为35?m,占跳动量为80%;对粗大误差进行正态分布拟合,保留置信区间在95%内的数据,去除粗大误差。本系统是根据国家标准中有关径向圆跳动测量的标准设计的,本系统上位机的人机交互界面实现了数据采集和存储的可视化与可控化,消除了人工读数带来的偶然误差。对于测量数据的处理,可以较为有效的去除测量过程中的偏心误差和粗大误差,大幅减少误差对跳动量的影响,提高测量精度,达到设计要求。
[Abstract]:With the rapid development of industrial production, pump products are widely used in various fields of industry. Mechanical transmission is essential in water pump, and pump shaft and impeller are widely used as important driving devices in water pump. Therefore, these structural indicators will affect the operation of the pump and technical indicators. There is always a deviation between the machined workpiece and the design index. The points, lines and surfaces of the machined parts always have errors relative to the ideal elements. The maximum value of this error is the tolerance of shape and position. Radial circle runout tolerance is an important index in shape and position tolerance. This index will cause heat and vibration when the pump is running, and even affect the service life of the pump. This index can be used to analyze the runout shape and position error, so as to optimize the production and improve the quality. The system adopts digital display meter with wireless transmission mode, non-contact eddy current sensor and angle encoder as testing instrument. At each angle, the electrical radial circle runout of the shaft neck of the pump shaft and the mechanical radial circle runout and angle value of the impeller orifice ring are collected by these instruments, and the polar coordinates are established. In this paper, Siemens PLC is used as the lower computer to receive and process the data of eddy current sensor and angle encoder. Through the OPC protocol, the electrical runout and angle values are uploaded, and the values and commands of the meter sent from the upper computer are received. The software of WinCC is used as the upper computer to control the acquisition, display and archiving of the measurement data in the whole system. The measurement resolution is 1m. The law of sinusoidal change caused by the installation eccentricity error is found through the analysis of the measurement data, and the de-eccentricity error is treated by the least square fitting method, and the feasibility of the method is verified by experiments. Before processing, the runout of the experimental data is 85 m, the eccentric error is 35 m, and the ratio of runout is 80 m. The coarse error is fitted by normal distribution and the data of confidence interval is kept within 95% to remove the gross error. The system is designed according to the national standard of radial circle runout measurement. The man-machine interface of the upper computer realizes the visualization and controllability of data acquisition and storage, and eliminates the accidental error caused by manual reading. For the measurement data processing, the eccentric error and the coarse error in the measurement process can be removed effectively, the influence of the error on the runout can be greatly reduced, the measurement accuracy can be improved, and the design requirements can be met.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH38
[Abstract]:With the rapid development of industrial production, pump products are widely used in various fields of industry. Mechanical transmission is essential in water pump, and pump shaft and impeller are widely used as important driving devices in water pump. Therefore, these structural indicators will affect the operation of the pump and technical indicators. There is always a deviation between the machined workpiece and the design index. The points, lines and surfaces of the machined parts always have errors relative to the ideal elements. The maximum value of this error is the tolerance of shape and position. Radial circle runout tolerance is an important index in shape and position tolerance. This index will cause heat and vibration when the pump is running, and even affect the service life of the pump. This index can be used to analyze the runout shape and position error, so as to optimize the production and improve the quality. The system adopts digital display meter with wireless transmission mode, non-contact eddy current sensor and angle encoder as testing instrument. At each angle, the electrical radial circle runout of the shaft neck of the pump shaft and the mechanical radial circle runout and angle value of the impeller orifice ring are collected by these instruments, and the polar coordinates are established. In this paper, Siemens PLC is used as the lower computer to receive and process the data of eddy current sensor and angle encoder. Through the OPC protocol, the electrical runout and angle values are uploaded, and the values and commands of the meter sent from the upper computer are received. The software of WinCC is used as the upper computer to control the acquisition, display and archiving of the measurement data in the whole system. The measurement resolution is 1m. The law of sinusoidal change caused by the installation eccentricity error is found through the analysis of the measurement data, and the de-eccentricity error is treated by the least square fitting method, and the feasibility of the method is verified by experiments. Before processing, the runout of the experimental data is 85 m, the eccentric error is 35 m, and the ratio of runout is 80 m. The coarse error is fitted by normal distribution and the data of confidence interval is kept within 95% to remove the gross error. The system is designed according to the national standard of radial circle runout measurement. The man-machine interface of the upper computer realizes the visualization and controllability of data acquisition and storage, and eliminates the accidental error caused by manual reading. For the measurement data processing, the eccentric error and the coarse error in the measurement process can be removed effectively, the influence of the error on the runout can be greatly reduced, the measurement accuracy can be improved, and the design requirements can be met.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH38
【参考文献】
相关期刊论文 前10条
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3 邹益民;庹超超;g埔，
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