文档介绍：大型转轮叶片多轴联动加工工艺技术研究
Study on Process of Multi-axis Movement Simultaneously Machining the Large Francis Turbine Blade
摘要
随着我国大型水电站的不断开发,大型水轮机组的研制进入快速发展阶段。转轮是水电机组的心脏,转轮叶片是转轮的关键部件,其加工制造技术也不断的发展。在大量的技术引进和消化以及制造业不断发展的基础上,我国的转轮叶片的加工制造已经摆脱了传统的手工制造的阶段,进入到数字化设计和制造阶段。
转轮叶片的五轴联动加工技术是转轮叶片制造的关键技术,它是一项涉及到多个学科相互交叉的综合性机械加工技术。由于其技术含量高、投资成本大,仅为世界上少数企业和公司所常握。目前转轮叶片加工所采用的工艺方法基本上沿用国外的技术方法,其工艺技术比较先进和成熟。由于工艺技术具有极强的个性,我们在转轮叶片的加工工艺上需要进一步研究来适应我们自身工艺技术环境等多方面的要求,以形成自身的制造工艺技术的特点,从而达到质量和成本的最优,实现效益的最大化。
本文对目前东方电机所采用的转轮叶片的工艺技术方法进行了详细的论述,并针对该工艺技术方法在实际应用中出现的一些问题进行了进一步的研究,主要包括对混流式叶片焊接坡口的加工工艺研究,转轮叶片的装夹找正工艺研究以及转轮叶片的机床仿真技术的研究,通过研究应用,提出了解决这些问题的方法,从而对转轮叶片的加工工艺技术进行了优化和完善。
通过上述研究,本文以三峡右岸水轮机叶片的加工制造为应用平台,以UG NX、CAMAND、VERICUT以及在MDT平台上二次开发的余量分布计算软件等为技术手段,对整个转轮叶片的制造工艺流程进行了优化和完善。通过对坡口加工工艺技术、转轮叶片装夹定位技术和基于转轮叶片加工的加工仿真系统的应用,提高了三峡右岸转轮叶片的加工质量,节约了加工成本,缩短了加工周期,取得了良好的经济效益和社会效益。
关键词:转轮叶片加工工艺五轴联动数控加工加工仿真叶片焊接坡口
Abstract
Following the development of large hydroelectric power station of our country, the research and manufacture of large hydroelectric generating set is developing quickly. The turbine is the heart of the hydroelectric generating set, the blade of turbine is the ponent, the technology of manufacturing of it is developing continuously. Based on the plentiful introduction and assimilation of advanced technology and the development of manufacturing, the manufacture technology of turbine blade have entered into the period of digital design and digital manufacturing, broken away from traditional manual manufacturing.
The manufacturing technology of turbine blade with the five-axis movement simultaneously of numerical control machine is the key technology of blade manufacturing, which is a all-around machining engineering technology which refer to many subjects. Because of high technology and much investment, only a panies and enterprises master it. Nowadays, the manufacturing technology of turbine blade follows the foreign technology in our country, it is relative advanced and mature. Because the process te