大尺寸平面直线度检测方法的研究

Research on the inspection method of large-scale plane straightness

针对大尺寸平面直线度测量的问题,提出了基于三点法的直线度测量方法,并在此基础上确定了测具的结构、参数和位移传感器的型号,选用MSP430F149型单片机来捕捉脉冲信号,并完成了测量仪器的设计。对采集的数据采用了最小二乘法原则来评定直线度。研究结果表明,该测量仪器能够满足自动加工中对直线度测量精度的要求,为大尺寸平面直线度测量技术提供了一种可以选用的测量仪器。

Aiming at the problem of large-scale plane straightness measurement,a method based on three-point method was proposed.On the basis of the method,the structural,parameters and the type of displacement sensor were determined,and MSP430F149 microcontroller which was used to capture pulse signal was chosen to complete the design of measuring instrument.To evaluating the straightness,least squares method principle was used to process those collected datas.The results indicate that the measuring instrument meets the requirements of straightness measurement accuracy of automated processing.And it provides a selection of measuring instruments for flat extrusion dies polishing automation technology.