气缸孔止口倒角的便捷测量方法

李东波，栾玉庆，田正玉，刘丁丁

潍柴动力股份有限公司，山东 潍坊  261061

摘要：为解决发动机气缸体缸孔止口倒角人工目测法测量精度低、难以满足生产需要的问题，基于缸孔止口倒角测量原理，设计缸孔止口倒角专用测量工具，进行样本测量，并用Minitab软件分析专用测量工具测得的样本数据的重复性波动、再现性波动、测量系统波动、部件间波动、合计波动。结果表明：该量具可实现缸孔止口倒角的便捷测量，相比传统的目测法，大大提高了产品检测精度和满足生产要求；系统波动评价因数16.92%，公差评价因数29.95%，均在10%~30%的有效评价范围内，验证测量工具及测量方法有效。

关键词：气缸体；测量；止口倒角；量具

A convenient method for measuring the chamfer of cylinder bore

LI Dongbo, LUAN Yuqing, TIAN Zhengyu, LIU Dingding

Weichai Power Co., Ltd., Weifang 261061, China

Abstract：In order to improve the accuracy and efficiency of manual visual inspection method for the cylinder hole chamfer of engine cylinder block, based on the cylinder hole chamfer measurement principle, a special measuring tool for the cylinder hole chamfer is designed, and the Minitab software is used to analyze repetitive fluctuation, reproducibility fluctuation, measurement system fluctuation, interpart fluctuation and total fluctuation of sample data measured by special measuring tool. The results show that the measuring tool can realize the convenient measurement of the chamfer of the cylinder hole, and can improve the product detection accuracy and meet the production requirements compared with the traditional visual inspection method. The system evaluation factor is 16.92%, tolerance evaluation factor is 29.95%, both within the effective evaluation range of 10%~30%, which verifies the effectiveness of measuring tools and methods.

Keywords:cylinder block; measurement; chamfer; measuring tools