飞机平尾钛合金接头的统计质量控制方法研究与应用

发布时间：2018-03-06 01:10

本文选题：统计过程控制　切入点：钛合金零件加工　出处：《上海交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国民用航空制造业的飞速发展,上海飞机制造有限公司(以下简称上飞公司)正努力成为世界民机领域一流航空制造企业。由于质量控制重结果检验轻统计过程控制,上飞公司数控机加车间机加件的过程能力指数达不到顾客的要求。随着车间加工任务的逐年增加,质量与生产交付周期、生产成本之间的矛盾日益突出,控制加工过程质量,提高机加件过程能力势在必行。这对于数控机加车间提升产品质量以及上飞公司跻身世界先进航空制造商行列都具有重要的现实意义。本文选取上飞公司数控机加车间制造的平尾钛合金接头作为统计质量控制方法的研究对象,以钛合金零件加工质量控制技术和统计过程控制技术为支撑,以提升过程能力为目标,以加工过程中的数据分析为基础,定量分析和诊断影响过程波动的误差源。运用正交实验的分析方法,优化钛合金接头切削参数。通过优化平尾钛合金接头加工过程质量体系,采用优化的加工工艺参数,编制关键工序加工步骤与注意事项,开发质量数据处理与分析软件,其关键特征的过程能力显著提升,实际过程能力指数Cpk达到并超过顾客的要求,过程能力充足,不合格率显著下降。平尾钛合金接头的质量提升例证了航空零部件加工过程的统计质量控制方法的可行性和有效性,值得推广应用。
[Abstract]:With the rapid development of China's civil aviation manufacturing industry, Shanghai aircraft Manufacturing Co., Ltd. (hereinafter referred to as Shanghai aircraft Manufacturing Company) is striving to become the world's leading aviation manufacturing enterprise in civil aviation field. The process capability index of adding parts in NC machine and workshop of Shangfei Company can not meet the requirements of customers. With the increasing of workshop processing tasks year by year, the contradiction between quality and production delivery cycle, the contradiction between production cost and production cost is becoming more and more prominent, and the quality of machining process is controlled. It is imperative to improve the process ability of adding parts, which is of great practical significance to improve the quality of products in the NC machining workshop and to rank the Shanghai Flying Company among the world's advanced aviation manufacturers. This paper selects the CNC machine of the Shangfei Company. The flat tail titanium alloy joint made in the workshop is used as the research object of the statistical quality control method. Based on the technology of quality control and statistical process control of titanium alloy parts, the aim is to improve the process ability, and the data analysis in the process is the foundation. Quantitative analysis and diagnosis of error sources affecting process fluctuation. The cutting parameters of titanium alloy joints were optimized by means of orthogonal test. By optimizing the process quality system of flat tail titanium alloy joints, the optimized processing process parameters were adopted. The process capability of the key characteristics of the key process is improved significantly, and the actual process capability index (Cpk) meets and exceeds the requirements of the customer, and the process capability is sufficient, and the process capability is sufficient, and the process capability is sufficient, and the key process capability index (Cpk) is more than that of the customer. The improvement of the quality of the flat tail titanium alloy joint exemplifies the feasibility and effectiveness of the statistical quality control method for the processing process of aviation parts and it is worth popularizing and applying.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V262

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