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1、 摘 要电火花线切割加工（wire-EDM）是一种基于电火花加工技术的适应性流程加工技术，它可以被用在具有二维到三维复杂形状的而且是导电的原材料的加工上。电火花线切割加工最常见的应用是在压模、挤压模、粉末冶金的铸模和标准摸板的装配工中。这样就可以加工出以往依靠花费很高的磨床或昂贵的传统意义上的电火花的电极来进行加工的工件。电火花线切割加工技术是机电一体化技术，是机械、电工、电子、数控、自动控制、计算机应用等多门学科、专业知识的综合运用。此次设计包括机床的总体布局设计，横向进给、纵向进给设计，其中还包括齿轮的强度计算，滚珠丝杆较核，轴承寿命的验算。这次设计的基本方法包括现场实习，查阅资料，请教专
2、业人士及老师的帮助。关键字：电火花线切割加工；横向进给；纵向进给Abstract Wire electrical-discharge machining(wire-EDM) is an adaptation of the basic EDM process, which can be use for cutting complex two-and-three-dimensional shapes through electrically conducting materials. Wire-EDM is most commonly used for the fabrication of pre
3、ss stamping dies, extrusion dies, powder composition dies, profile gages, and templates. Complicated cutouts can be made in difficult-to-machine metals without the need for high-cost grinding or expensive shaped EDM electrodes, Because the technology of wire electrical-discharge machining is the tec
4、hnology of mechatronics, and it is the integrate application of many subjects and professional knowledge, for example mechanism, electrician, electron, numerical control, auto control and computer application. The design contains collectivity distribution design, landscape orientation feed design, p
5、ortrait feed design, circumgyrate worktable design. It still includes intension calculation of gear wheel, the checking of ball bearing pole and the calculation of axis gearing life-span,The bsasic design method contain that field practice,data access,consult professional personage and the help of t
6、eacher . Key words:wire electrical-discharge machining；Traverse；Longitudinal into to 目 录摘 要I第1章 绪论11.1 数控线切割机床的研究意义11.2 数控线切割机床的发展现状1第2章 总体方案设计32.1 总体方案的拟定32.2 主要技术参数的确定4第3章储丝走丝部件结构设计63.1 储丝走丝部件运动设计63.1.1 对高速走丝机构的要求63.1.2 高速走丝机构的结构及特点63.2 储丝走丝部件主要零件强度计算133.2.1 齿轮传动比的确定133.2.2 齿轮齿数的确定143.2.3 传动件的估算15
7、3.2.4 齿轮模数估算163.2.5 齿轮模数的验算173.3 储丝走丝部件主要零件强度验算203.3.1齿轮强度的验算203.3.2 主轴的验算233.4 主轴组件结构设计253.4.1 轴承的配置形式253.4.2 主轴组件的调整和预紧26第4章 进给传动设计274.1 进给传动运动设计274.2 滚珠丝杆螺母副选型和校核274.2.1 滚珠丝杆螺母副的型号选择274.2.2滚珠丝杆的选型和校核294.3 步进电机的选用324.4 进给机构的支承设计324.4.1 丝杆的支承形式324.4.2 丝杆的支承方式32结 论34致 谢35参考文献36CONTENTSAbstractIIChap
8、ter1 Introduction1 1.1 Nc wedm research significance1 1.2 Nc wedm development present situation1Chapter2 Overall design32.1 Development of overall program32.2 Main Technical Parameters4Chapter3 Wire storage components design to go wire63.1 Reserve component wire to go wire Motion Design63.1.1 High-s
9、peed wire agency requirements go63.1.2 Features of the structure of wire agencies63.2 Reserve component wire to go wire main parts Strength133.2.1 Determine the gear ratio133.2.2 Determination of number of gear teeth143.2.3 Estimation of gear transmission parts to determine153.2.4 gear module estima
10、tes163.2.5 Modulus checking gear173.3 Reserve wire main parts to go wire strength checking Parts203.3.1 checking gear strength203.3.2 Checking the spindle233.4 The structural design of the spindle assembly253.4.1 bearing configurations253.4.2 Adjustment and tightening the spindle assembly 26Chapter4
11、 Design of the feed drive274.1 Feed drive motion design274.2 The ball screw model selection 274.2.1 screw nut beads model selection274.2.2 Selection and check of ball screw294.3 The selection of the stepper motor324.4 Bearing design feed mechanism324.4.1 support in the form of screw324.4.2 Screw Bearing Form32Conclusion30Thanks
