锻压技术

曲轴圆角半径测量方法对其过程控制能力的影响

英文标题：Effect of measuring method of crankshaft fillet radius on its process control capability

作者：王云飞冯银平徐成慧刘琪刘岩魏彩丽

单位：第一拖拉机股份有限公司拖拉机动力系统国家重点实验室洛阳市机械产品失效分析重点实验室

分类号：TG821

出版年,卷(期):页码：2017,42(11):144-147

摘要：

简要介绍了利用R规和轮廓仪测量曲轴圆角半径的两种测量方法，并利用Minitab软件，对这两种测量方法所能达到的过程能力进行了分析。结果表明：利用R规，测量曲轴圆角半径的实际过程能力指数Cpk为0.23，测量过程控制能力严重不足；而轮廓仪测量所达到的实际过程能力指数Cpk为1.03，满足过程质量控制的要求。因此，曲轴生产过程中使用轮廓仪能精确测量曲轴圆角半径，其加工一致性与实际过程控制能力远大于R规测量。建议曲轴生产厂家使用轮廓仪测量曲轴圆角半径，提高曲轴圆角半径尺寸的测量精度，进而保证砂轮修整精度，提高过程质量控制能力。

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.

基金项目：

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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