【作者】 杨建华；

【导师】 林学东；

【作者基本信息】 吉林大学 ， 工程硕士（专业学位）， 2017， 硕士

【摘要】 随着技术的日新月异,客户对产品的功能、质量要求越来越高,产品更新周期越来越短,但复杂程度也随之增高。随着人们对影响环保要素认识的不断深入,汽车尾气成为生态建设路上的重要整改因子。在我们国家经济保持稳步发展的过程中,环保建设也被提上日程。我国柴油机国四(欧三)排放法规标准于2013年7月1日正式实施,提高发动机的排放成为企业重要的竞争手段。2009年开始,潍柴动力已成功具备生产达到欧三标准的10L、12L柴油机,为提高潍柴发动机市场占有率,扩大欧三标准柴油机的功率范围,公司启动了13L柴油机的研发策略,并于2013年确立工艺研发和工艺实施进程。通过分析WP12与WP13柴油机气缸体产品结构,结合目前潍柴WP12/WP10蓝擎生产线的现行状态,确定合适的工艺改进方案,通过改进或完善现有的WP12柴油机缸体生产线,最终实现WP12与WP13在生产线上的通用生产。论文主要从分析WP12与WP13柴油机气缸体的产品结构区别入手,结合现有的WP12机型的加工工艺,分析WP12与WP13的异同点,确定可兼顾两者的最佳通用生产加工工艺,这种兼顾式混型生产工艺方案,减小了生产线的改造或新增,降低了企业投入成本:针对WP12与WP13相同之处的工序加工,维持原有工艺;针对两者的不同点,通过设备改造或新增,确定同时适用于WP12与WP13的工艺参数,包括刀具、机床、加工方式等。本方案实施后,生产线既具有较高的柔性,适于变型产品的加工,又具备较高的生产效率。实践证明,根据该工艺方案优化建设的生产线,具有设备利用率高、换型速度快、防错能力强等特点,具备稳定的生产能力与可靠性,对于其它排量的产线升级改造具有一定的指导与参考价值。更多还原

【Abstract】 With the development of science and technology,society and enterprises are demanding more and more functions and quality of products.The cycle of upgrading and upgrading of products is becoming shorter and the complexity of products increases accordingly.In today’s increasingly modern people’s life,automobile exhaust has become an important pollution source of urban atmospheric environment,along with the people environmental protection consciousness,our country in July 1,2013 formally implemented four(three)emission regulations standards,improve the engine emissions become the important means of competition of enterprises.Beginning in 2009,weichai power have successfully production reached the three standards of 10 l,12 l diesel engine,to improve the weichai engine market share and expand the scope of the three standards of diesel engine power,the company launched the 13 l diesel engine research and development strategy,and in 2013 established process research and development and the implementation process.Combining the weichai WP12 / WP10 the actual status of blue with line,analysis WP12 and WP13 diesel engine cylinder block product drawings,determine appropriate process improvement plan,by improving or improve existing WP12 diesel engine cylinder block production line,finally realizes the WP12 and WP13 general production on the production line.Thesis mainly from the analysis of the difference of WP12 and WP13 diesel engine cylinder block,reference existing WP12 process,the analysis of similarities and differences among the WP12 and WP13 can determine both the best general production and processing technology,this both reduced the modified or new production line,reducing the costs of process optimization: for WP12 and WP13 in common machining,to maintain the original process;For the difference between the two,the process parameters of WP12 and WP13 are determined,including cutting tools,machine tools and processing methods.After the implementation of this scheme,the production line has a high flexibility,suitable for the processing of variable products and high production efficiency.Practice has proved that according to the scheme of the construction of the production line,has high utilization rate of equipment,stable production capacity and reliability,for other displacement of the upgrading of production line has a certain guidance and reference value.更多还原