An algorithm for roundness evaluation of crankshaft main journal

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, YaXiao^1 ; Su, YongShuai^1 ; Wang, HongXi^1

Xi'An Technological University, Shaanxi, China^1

关键词: Error separation;    Evaluation algorithm;    High-accuracy;    Least Square;    Measurement data;    Measuring machines;    Polar coordinate;    Roundness error;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/6/062052/pdf
DOI  :  10.1088/1757-899X/490/6/062052

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The roundness of crankshaft main journal is a key parameter which affects the performance of automobile engine. When the crankshaft comprehensive measuring machine is used to measure roundness error, the result of roundness is deviated because the workpiece is eccentric installed. In this paper, an technique of eccentric error separation is proposed to separate and correct the eccentric error existing in the original measurement data. On this basis, the least square evaluation algorithm based on polar coordinate is used to evaluate the roundness error of crankshaft main journal. The result shows that this method can effectively eliminate the installation eccentricity introduced in the measurement results and has high accuracy.