摘要
针对缸盖装配螺栓孔位置度偏差问题,本文从工艺过程数据和三坐标测量结果出发,识别出预铸工艺以及工艺尺寸链两大影响方向。通过预加工工艺优化解决了由于铸造收缩导致的螺栓孔上下两层测量点位置度偏差较大的问题;通过过程能力监控方式的改进消除了尺寸设计的内在局限性,进而有效地提升了螺栓孔位置度的工艺稳定性和质量表现。
In terms of the cylinder head mounting hole position deviation problem,this paper identifies two major influence directions based on machining process data and CMM measurement result,which are pre-casting process and process dimension chain.Significant position deviation between upper and lower measuring layers of bolt hole caused by casting shrinkage is solved by pre-machining process optimization.The inherent limitation of dimension design is eliminated by the improvement of process capability monitoring method,effectively enhancing the process stability and quality performance of bolt hole position.
作者
糜兆强
王文珍
Mi Zhao-qiang;Wang Wen-zhen(Beijing Benz Automotive Co.,Ltd.,Beijing 100176,China)
出处
《内燃机与配件》
2025年第7期5-8,共4页
Internal Combustion Engine & Parts
关键词
螺栓孔位置度
铸造收缩
工艺尺寸链
预钻加工
过程能力
Bolt hole position
Casting shrinkage
Process dimension chain
Pre-drill machining
Process capability
作者简介
糜兆强(1994-),男,辽宁大连人,汉族,中级工程师,硕士研究生,研究方向:汽车发动机缸体机加工技术。
