【作者】 卢克超；

【导师】 周利平；

【作者基本信息】 西华大学 ， 机械电子工程， 2007， 硕士

【摘要】 现代制造业“高精度、高效率、高可靠性和专用化”的发展趋势，对现代刀具的设计提出了智能化、专用化的要求。组合机床的刀具性能直接影响机床切削加工的效率、精度和表面质量，进而影响产品的质量。基于二维CAD的刀具设计设计质量低；图纸更改繁琐、易产生遗漏和错误；刀具设计数据不能共享，重用性差，刀具检索困难。这些缺点的存在使得它已经不能满足企业CIMS一体化的需求，因此广泛采用三维设计方法，研究开发组合机床智能化刀具CAD系统对刀具设计效率的提高、刀具产品竞争力的提高、刀具设计的创新有着重大的现实意义。本系统充分发挥Visual C++6.0、SQL Server2000、SolidWorks2006以及Deform软件各自优点，运用CBR技术、专家系统、动态链接库(DLL)技术、ADO数据库互连技术，以及Solid Works2006API开发出了面向对象的三维参数化的组合机床刀具智能CAD系统。系统采用DLL开发模式，利用Solid Works2006API二次开发技术，修改了Solid Works2006中的菜单，实现了VC++的MFC与Solid Works2006接口的信息交流，充分利用了VC强大的界面开发技术和Solid Works2006的三维建模技术。利用Solid Works2006的二次开发技术和SQL Server，将参数化和特征建模相结合，建立了三维参数化实例库和刀片标准库；采用ADO数据库互连技术，实现了VC与SQL Server2000数据库的连接，建立了功能强大的数据库管理系统。在刀具的设计过程中，利用专家系统对每一类零部件进行特征描述，包括几何特征和物理特征，然后将计算方法封装在零部件的信息模型中，构成一个对象类，供设计的时候调用，并建立相应的知识库和实例库，进行数据的维护和更新；采用基于实例推理(CBR)的方法进行刀具的设计，充分利用已有的，设计经验，通过对实例库中最佳实例的修改和优化，设计出新的刀具。系统开发结果表明，该系统①实现刀具设计过程的程序化和参数化；②建立便于修改和维护的刀具参数数据库；③能根据优化的结果自动生成刀具三维实体图；④根据优化结果设计的刀具更好的满足机床多轴加工的流屑要求，刀具强度和刚度的要求，延长刀具的使用寿命。⑤系统功能强大，便于使用、管理和维护，具有较强的实用性。更多还原

【Abstract】 With the developing trend of modern manufacturing industry to high precision, high efficiency, high reliability and customization, modern cutting tool design should meet the requirements to be intelligent and customized. Cutting tool performance of modular machine tool directly influences the efficiency of cutting process and the precision and surface quality of the workpiece machined, and further affects the product quality.The quality of cutting tool design based on two-dimensional CAD is poor and the drawing update is inconvenient, therefore pretermissions and mistakes often occurs. Design data can not be shared and reused, which leads to the difficulty for data retrieval. Because of these disadvantages cutting tool design based on two-dimensional CAD can not satisfy the request of CIMS integration .So the study and exploitation for modern cutting-tool’s intelligent CAD system will have strong impact on the increase in cutting-tool design efficiency, cutting-tool product competition capability and cutting-tool design innovationThe intelligent CAD system for cutting tools modular machine tool is developed using CBR technology, expert system, dynamic link library, ADO technology and API interface technology in SolidWorks2006, which integrates the merits of Visual C++6.0, SQL Server2000, SolidWorks2006 and DeformThe synchronous DLL mode and secondary developing technology in SolidWorks2006 are adopted to modify the menu of SolidWorks2006 to achieve the information exchange between the MFC and SolidWorks2006 interface. As a result, the powerful interface technology of Visual C++ and three-dimensional modeling technology of SolidWorks2006 are employed. The 3D parameterized cases library and inserts standard library are established using secondary developing technology based on SolidWorks2006, which integrates parameterized technology with feature-based modeling technology and SQL Server. A powerful DBMS is created using ADO technology to achieve the connection between Visual C++ and SQL Server. In the design procedure for cutting tools, expert system is used to describe the characteristics of each component, including geometric features and physical features, and then the algorithm is sealed into the information model of the component, which is called as an object class during the tools design. CBR technology is also adopted to design the tools. The design experience that has already existed is fully utilized. The new tools will be designed through modifying and optimizing the similar case in the case library.The results obtained indicate that firstly, the system can carry out the programmed and parametric design in the tool design; Secondly, the system has the database of the tool parameters, which can be easily modified and maintained; Thirdly, the system can automatically build 3D parameterized models for the tools to be designed according to the optimized results; Fourthly, the tools designed according to the optimized results can meet the requirements of chip-flow on the machine tools with multi-spindles and the requirements of rigidity and strength, and the design can increase life the tool; Fifthly, the system has the strong function and can be easily maintained and managed and it has stronger practicability.更多还原