Key Technical Research of Database Based on Precision Machining Environment Monitoring System

激光核聚变装置、高能激光、红外热成像、卫星用光学系统、大型天文望远镜、医疗影像设备等国家重大工程及国防尖端技术对高精度大口径光学非球面元件(Ø400mm以上)有极大的需求。该类元件属于硬脆性难加工材料，对非球面表面加工精度的要求也相当高。由于大口径非球面在国防军事等领域的应用，国外发达国家对我国实行严格技术和设备禁运。当前国内的精密、超精密制造及其装备技术与国外相比仍然存在阶段性差距，精密级磨床无论在加工精度、加工尺寸，还是可靠性设计、环境控制等方面都还属于实践验证。因此，加强超精密加工装备及其关键技术开发和应用研究具有重要的意义。在精密非球面加工过程中，机床加工所能达到的加工精...In the fields of laser fusion, high-energy laser, thermal infrared imaging, satellite optical system and large astronomical telescope, large scale aspheric optical lens(Greater than Ø400mm) with high surface quality are in great demand.This technology is in privacy protection in most developed countries, due to the special application of large aspheric lens. The development gap in grinding ...学位：工学硕士院系专业：物理与机电工程学院机电工程系_机械电子工程学号：1992009115247

超精密磨床主轴部件热特性的有限元分析

【中文摘要】 加工中机床热误差是影响机床加工精度稳定性的关键因素,对其进行准确的分析至关重要。文章运用ANSYS软件建立超精密磨床主轴部件的有限元模型,分析主轴热源及初始条件,边界条件,通过计算得到磨床主轴的温度场、热应力及热变形量。分析结果说明了热误差为超精密磨削的主要误差,为后期加工和试验分析提供了参考依据。863计划重点项目课题(2008AA042501

Study and develop on monitoring system database for precision manufacturing environment

针对精密加工中对环境参数控制的要求以及监控数据管理的需求,提出一种加工环境全局监控系统,研究其支撑的数据库开发。采用WIndOWS系统环境支持下的SQl SErVEr、VISuAl C++软件进行开发。系统承载数据实时监控、数据存储与淘汰、环境状况分析和及时报警等模块功能,提高了诊断的准确性,并针对精密非球面磨削数控加工,设计了监控系统实例。最后,通过系统测试验证了其可行。This paper presents a monitoring and whole situation control system for machining process according to the characteristic of precision manufacturing,and studies on its system database development.In this paper,the database was established by adopting Visual C++ and SQL Server supported based on Windows system.There are real time monitoring,data storage and elimination,environment conditions analysis,and timely alarm modules in this system,for improving the data management and accuracy of the system.Finally,an example of monitoring system for precision aspheric surface manufacturing was designed and verified by test.国家自然科学基金项目(51075343