基于三角法的小口径大内膛回转体工件内径测量装置设计

Design of Measuring Device for Inner Diameter of Small Bore Large Chamber Rotary Workpiece Based on Triangulation

小口径大内膛回转体工件内径测量需要专门的装置,通过对几何光学三角法的分析研究,设计一种基于三角法的小口径大内膛回转体工件内径测量装置。该装置以反射机构为核心,运用几何光学三角法和几何光学三点测距原理对待测回转体工件内径进行测量及计算。该装置对内径为45~60 mm的小口径大内膛回转体工件进行测量,并与高精度三坐标测量机测量结果对比,该装置的测量精度小于0.03 mm,满足中小企业对小口径大内膛回转体工件内径测量的快速化、自动化要求。

A special device is needed for measuring the inner diameter of small bore large chamber rotary workpiece.Based on the analysis and research of geometric optical triangulation,a device for measuring the inner diameter of small bore large chamber rotary workpiece is designed.The device takes the reflection mechanism as the core,and uses the geometrical optical triangulation method and the geometrical optical three-point distance measuring principle to measure and calculate the inner diameter of the rotary workpiece to be measured.The device measures small bore large chamber rotary workpiece with an inner diameter of 45-60 mm,and compared with the measurement results of high-precision CMM,the measurement accuracy of the device is less than 0.03 mm,which meets the rapid and automatic requirements of small bore large chamber rotary workpiece for small and medium-sized enterprises.