Pro/E的二次开发

Pro/E的二次开发(中文2800字,英文1900字)
标准件在机械、电子、轻工、汽车、航空航天、造船等各个领域应用广泛。对当今机械产品的零部件分析表明，标准零部件的数量约占到60%左右，30%左右的零部件是通过变型设计得到的通用件，而根据客户特殊需求开发的零部件只有10%左右。标准零部件不仅数量多，且在设计过程中需要频繁查阅各种设计手册。据统计，标准零部件的选用及绘制约占全部设计时间的70%，所以，在产品设计中，标准零部件的设计是一项费时费力且带有很大重复性的操作，这显然与日趋激烈的市场竞争环境不相适应。因此，很有必要开发各种通用和专用的标准件库来取代这一繁琐、复杂的劳动。随着经济的发展和计算机应用的普及，尤其是信息技术、网络技术的发展，标准件库的共享己成为我国CAD技术广泛应用后所面临的难题之一。目前国内的机械、建筑等行业的大部分企业都采用了CAD系统，如AutoCAD,Pro/ENGINEER(以下简称Pro/E), UG, CATIA，SolidWorks,SolidEdge等。但是，大多数CAD系统本身并不包含标准件库，少数提供标准件库的CAD系统，其所包含的标准件种类及数量也都非常有限，且有一个共同的缺点：可抑制性和软件复用性差，不能满足工程设计人员的需求。因此，为了建立符合我国国标或各行业行标的标准件库，许多研究单位和部门都在各种CAD平台上利用其提供的二次开发接口进行了二次开发。

Two development of Pro/E
Standard parts in machinery, electronics, light industry, automobile, aerospace, shiPBuilding and other fields are widely used in various fields. Parts of machinery products in today's analysis shows that standard parts of the number accounted for about 60%, about 30% of the parts  is through the variant design of general parts, and according to the parts of the development of the special needs of customers only about 10%. Standard parts not only a number of, and in the design process need to frequently consult a variety of design manual. According to statistics, the standard parts of the selection and drawing accounts for about 70% of all the design time, so in the product design, standard parts and components design is a time-consuming and laborious and with a lot of repetitive operation, this is clearly and the increasingly fierce market competition environment does not adapt. Therefore, it is necessary to develop a variety of general and special standard parts library to replace the cumbersome and complex labor. With the development of economy and the popularization of computer application, especially the development of information technology and network technology, the sharing of standard parts library has become one of the difficult problems that the CAD technology has been widely used in our country. At present, most of the enterprises in the domestic machinery, construction and other industries have adopted the CAD system, such as AutoCAD, Pro/ENGINEER (hereinafter referred to as Pro/E), UG, CATIA, SolidWorks, SolidEdge, etc.. But most CAD system itself does not contain the standard parts library, a few to offer standard parts library of CAD system, it contains the standard type and quantity are very limited, and there is a common drawback: can inhibit and software reuse is poor, can not meet the demand of engineering design personnel. Therefore, in order to establish the standard parts library which conforms to the national standard of our country, many research units and departments have carried out the two development of the two development interfaces provided by the CAD platform.