Transactions of Materials and Heat Treatment

Title：Effect of measuring method of crankshaft fillet radius on its process control capability

Authors： Wang Yunfei Feng Yinping Xu Chenghui Liu Qi Liu Yan Wei Caili

Unit： First Tractor Co. Ltd. State Key Laboratory of Power System of Tractor Luoyang Key Laboratory of Mechanical Product Failure Analysis

KeyWords： crankshaft fillet radius process capability index profilometer R gauge Minitab

ClassificationCode：TG821

year,vol(issue):pagenumber：2017,42(11):144-147

Abstract：

Two measuring methods were briefly introduced by using R gauge and profilometer to measure the crankshaft fillet radius，and the process capability of each measuring method was analyzed by Minitab software. The results demonstrate that the measurement process control ability is seriously insufficient with its actual process capability index Cpk of 0.23 by using R gauge to measure the crankshaft fillet radius. The measurement can meet the requirements of process quality control with its process capability index Cpk of 1.03 by using profilometer to measure the crankshaft fillet radius. The processing consistency and actual process control capability of the crankshaft whose fillet radius is accurately measured by profilometer in manufacturing are greater than that by R gauge. Using profilometer to measure the crankshaft fillet radius is proposed to crankshaft manufacturers, and the measuring accuracy of crankshaft fillet radius size can be improved. So the dressing precision of the grinding wheel can be ensured and its process quality control capability can be improved.

Funds：

作者简介：王云飞（1965-），男，硕士，教授级高工 E-mail：wangyunfei@ytogroup.com 通讯作者：冯银平（1987-），女，硕士，工程师 E-mail:yinping0129@163.com

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