毕业论文-全自动打包机系统设计.doc

PAGE 本科毕业论文 （20 届） 全自动打包机系统设计 机械部分设计 专业：机械设计制造及其自动化 摘 要：本文介绍了全自动打包机系统的研究背景和意义，通过研究分析全自动打包机的机械结构、工作原理，探讨了全自动打包机的主要技术参数，机械结构及系统组成等。对机芯部分的主要零件进行了材料的选择、机构设计、受力分析、相关参数的计算和校核，并根据机械负载所要求的过载能力、转矩、及工况条件选择电机的载荷，根据电机的使用场所环境选择电机的防护等级及结构。根据轴的受力情况对轴承的选择做出了系统分析，并校核了其使用寿命。最后绘制了部分零件图，并用solidworks三维制图软件对部分组件进行了三维建模。 关键词：全自动打包机；主轴；轴承；电机 The Design of Automatic Balers System The Part of Mechanical Design Abstract: The paper, which introduces the research background and significance of automatic balers, aims at discussing the packer’s main technical parameter, mechanical structure and system composition etc based on the analysis of the mechanical structure and working principle. For the major parts of the cassette mechanism, this paper illustrates and checks the material selection, mechanism design, stress analysis and parameter calculation. Meanwhile, this paper examines the selection of electric motor’s load according to the overload capacity, torque and operating conditions, as well as the protection level and structure selection according to the operating environment. Additionally, the systematical analysis of the bearing selection based on forces on axle and the lifetime estimation will be made. Part drawing is showed, and three-dimensional modeling based on solidworks is established. Keywords: automatic balers; spindle; bearings; motor 目 录 1引言…………………………………………………………………………………………1 1.1研究背景…………………………………………………………………………………1 1.1.1国内外研究状况…………………………………………………………………1 1.1.2存在问题及发展趋势…………………………………………………………2 1.2研究意义………………………………………………………………………………2 2全自动打包机的设计………………………………………………………………2 2.1工作原理分析 ……………………………………………………………………………2 2.2主轴的设计………………………………………………………………………3 2.3主轴的校核……………………………………………………………………6 2.4轴承的设计与校核……………………………………………………………8 2.5电机的选择………………………………………………………………………10 3 solidworks三维建模…………………………………………………………………11 3.1 solidworks制图软件概述 ……………………………………………………………11 3.2 solidworks的建模应用 ………………………………………………………………11 4总结…………………………………………………………………………………………14 注释…………………………………………………………………………………17 参考文献…………………………