硅钢片数控横剪线的加工策略研究与实现

发布时间：2019-01-05 08:29

【摘要】：硅钢片数控横剪线是生产电力变压器铁芯的堆叠材料——硅钢片的专用设备。硅钢片按铁芯结构分为中柱片、铁(轭)片、边片,其片形组合丰富,种类多。目前我国硅钢片数控横剪线存在着工艺过于简单、加工效率低、数控化程度低、制造柔性差等缺点。本文从理论上分析硅钢片数控横剪线及其工艺,通过数学建模得出多剪多冲数控横剪线的加工策略,开发了两剪三冲数控横剪线自动加工系统,并通过仿真和现场应用验证了加工策略的可行性。首先,基于Petri网理论建立了多剪多冲数控横剪线的时间Petri网(TPN)模型。通过引入特征的概念,将硅钢片定义成基本特征的集合,提出多剪多冲数控横剪线的定义三方面为建立TPN模型奠定基础。其次,研究加工策略,建立以加工工步为优化目标的多剪多冲数控横剪线的数学模型,并对工步参数进行优化。以数学模型为基础,从算法总体流程、工步计算及优化、工步参数优化三方面设计多剪多冲数控横剪线的求解算法。再次,实现两剪三冲数控横剪线自动加工系统。在前面章节理论研究成果的基础上,以统一建模语言(UML)建模理论为基础建立系统的设计用例模型和实体类模型;利用微软基础类库(MFC),开发了片形数据转化模块、工艺分析模块和人机交互界面(HMI),实现了两剪三冲数控横剪线加工数据的自动生成。最后,对两剪三冲数控横剪线自动加工系统进行仿真与应用。采用SolidWorks系统的参数化功能,对系统生成的数据进行了仿真,验证了数据的准确性和加工策略的可行性。开发的两剪三冲数控横剪线自动加工系统安装在某公司研制的硅钢片数控横剪线上进行了现场应用,已加工出合格产品。
[Abstract]:The silicon steel sheet numerical control transverse shear line is a special equipment for producing power transformer core stacking material-silicon steel sheet. According to the core structure, silicon steel sheet is divided into middle column sheet, iron (yoke) sheet, edge piece, its sheet shape combination is rich, and there are many kinds. At present, there are some disadvantages such as too simple technology, low machining efficiency, low numerical control degree and poor manufacturing flexibility in the NC transverse shear line of silicon steel sheet in China. In this paper, the numerical control transverse shear line and its technology of silicon steel sheet are analyzed theoretically, and the machining strategy of multi-shear and multi-punch NC transverse shear line is obtained by mathematical modeling, and the automatic machining system of two-shearing and three-punch NC transverse shear line is developed. The feasibility of machining strategy is verified by simulation and field application. Firstly, based on Petri net theory, the time Petri net (TPN) model of multi-shearing and multi-punch NC transverse shear line is established. By introducing the concept of feature, the silicon steel sheet is defined as a set of basic features, and the definition of multi-shear and multi-punch numerical control transverse shear line is proposed to lay the foundation for the establishment of TPN model. Secondly, the processing strategy is studied, and the mathematical model of multi-shearing and multi-punch NC transverse shear line with multi-shearing and multi-punching as the optimization objective is established, and the parameters of the step are optimized. Based on the mathematical model, an algorithm for solving multi-shearing and multi-punching numerical control transverse shear lines is designed from three aspects: the overall flow of the algorithm, the calculation and optimization of the step and the optimization of the parameters of the step. Thirdly, the automatic machining system of two-shears and three-punch NC transverse shear lines is realized. Based on the theoretical research results in the previous chapters, the design case model and entity class model of the system are established based on the unified modeling language (UML) modeling theory. The chip data conversion module is developed by using Microsoft basic class library (MFC),. The process analysis module and man-machine interface (HMI), are used to realize the automatic generation of machining data of two shears and three punch NC transverse shear lines. Finally, the simulation and application of automatic machining system for two-shears and three-punch NC transverse shear lines are carried out. The parameterized function of the SolidWorks system is used to simulate the data generated by the system, and the accuracy of the data and the feasibility of the processing strategy are verified. The automatic machining system of two shear and three punch NC transverse shear line is installed on the NC transverse shear line of silicon steel sheet developed by a company. The qualified product has been machined.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP301.1;TG659

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