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毕业设计(论文)
工件自动输送机的设计
The design of automatic conveyer workpiece
学生姓名 学院名称 专业名称 指导教师
年 月 日
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摘要
在科技越来越发达的今天，在各种行业中生产效率也变的更加重要。于是各种类型的输送机的用处也越来越大。与此同时对输送机的要求也越来越高。在本次工件输送机的设计里，在工件输送机的传输距离和速度方面要求也比较高，本次设计对整个输送机的主要部件进行了粗略的介绍，其中在节省投资和控制方面有比较好的调节。
本设计的主要研究内容是设计连杆结构的尺寸以及齿轮传动的主要参数等，对主要研究部分的部件进行了选型，设计，校核。 关键词 输送机；连杆机构；齿轮传动
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Abstract
Nowadays, science and technology is more and more developed, production efficiency is becoming more important in various industry. So all kinds of conveyor’s use is more and more big. Meanwhile the demand of conveyor is more and more high. In this design of the workpiece conveyor, the requirement of the transmission distance and speed is higher, this design is discussed in rough introduction of the major parts of the conveyor. Also in the part of saving investment and control have better regulation.
The main research contents of this design is design the size of connecting rod structure and the main parameters of gear transmission and so on. To drive the various components of the selection, design and verification.
Keywords conveyor linkage mechanism gear transmission
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目 录
摘要 ............................................................................................................................................... 10 Abstract ........................................................................................................................................ 11 1 绪论 ............................................................................................................................................. 3 1.1背景介绍 ............................................................................................................................... 3 1.2方案比较 ............................................................................................................................... 4 1.3设计方案综述 ....................................................................................................................... 4 2 连杆机构的设计 ......................................................................................................................... 5 2.1 连杆机构的定义及特点 ...................................................................................................... 5 2.2 平面曲柄摇杆机构 .............................................................................................................. 6 2.3 平面四连杆机构有曲柄的条件 .......................................................................................... 6 2.4 连杆设计内容 ...................................................................................................................... 6 2.4.1 摇杆的摆角初选 ........................................................................................................... 7 2.4.2 铰点位置和曲柄长度的设计 ....................................................................................... 7 2.4.3 曲柄摇杆机构的设计 ................................................................................................... 7 2.4.4 校核最小传动角 ........................................................................................................... 7 3 机构的运动和动力分析 ............................................................................................................. 8 3.1 概述 ...................................................................................................................................... 8 3.2 用矢量方程图解法作平面连杆机构的速度和加速度分析 .............................................. 8 3.2.1 绘制机构运动简图 ....................................................................................................... 9 3.2.2 作速度分析 ................................................................................................................... 9 3.2.3 作加速度分析 ............................................................................................................. 10 3.3 用矢量方程图解法作平面连杆机构的动态静力分析 .................................................... 11 3.3.1 对机构进行运动分析 ................................................................................................. 11 3.3.2 确定各构件的惯性力和惯性力偶矩 ......................................................................... 11 3.3.3 机构的动态静力分析 ................................................................................................. 12 4 杆件的设计 ............................................................................................................................... 16 4.1 杆件的类型 ........................................................................................................................ 16 4.2 钢材和截面的选择 ............................................................................................................ 17 4.3 杆件间的联结 .................................................................................................................... 17 4.3.1 剪切强度计算 ............................................................................................................. 17 4.3.2 挤压强度计算 ............................................................................................................. 18 4.3.3 稳定性的校核 ............................................................................................................. 18 5 减速器的设计 ........................................................................................................................... 19 5.1 电动机的选择 .................................................................................................................... 20
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5.1.1 选择电动机类型和机构形式 ..................................................................................... 20 5.1.2 功率的计算 ................................................................................................................. 20 5.1.3 电动机功率计算 ......................................................................................................... 20 5.1.4 传动效率 ..................................................................................................................... 21 5.1.5 确定电动机转速 ......................................................................................................... 21 5.2 确定传动装置的总传动比和分配传动比 ........................................................................ 21 5.2.1 总传动比 ..................................................................................................................... 21 5.2.2 分配减速器的各级传动比 ......................................................................................... 21 5.3 计算传动装置的运动和动力参数 .................................................................................... 22 5.3.1 各轴转速 ..................................................................................................................... 22 5.3.2 各轴输入功率 ............................................................................................................. 22 5.3.3 各轴输入转矩 ............................................................................................................. 22 5.4 减速器结构的设计 ............................................................................................................ 22 5.4.1 机体结构 ..................................................................................................................... 22 5.4.2 铸铁减速器机体的结构尺寸见下表5-2(单位㎜) .................................................. 23 5.5 传动零件的设计计算 ........................................................................................................ 24 5.5.1 减速器外传动零件的设计 ......................................................................................... 24 5.5.2 减速器内传动零件的设计 ......................................................................................... 24 5.6 装配图设计第一阶段 ........................................................................................................ 27 5.6.1 有关零部件的结构和尺寸的确定 ............................................................................. 27 5.6.2 轴的结构设计 ............................................................................................................. 28 5.6.3 轴的支点距离和力作用点的确定 ............................................................................. 28 5.7 滚动轴承的选择 ................................................................................................................ 31 5.7.1 选择原则 ..................................................................................................................... 31 5.7.2 选用方法 ..................................................................................................................... 31 5.7.3 滚动轴承的失效 ......................................................................................................... 32 5.8 轴承盖上的螺纹强度计算 ................................................................................................ 33 5.9 键的选择和强度校核 ........................................................................................................ 33 5.10 联轴器的选择计算 .......................................................................................................... 34 5.11 装配图设计的第二阶段 .................................................................................................. 34 5.11.1 轴承端盖结构 ........................................................................................................... 34 5.11.2 轴承的润滑与密封 ................................................................................................... 35 5.11.3 减速器的润滑 ........................................................................................................... 35 5.12 减速器附件设计 .............................................................................................................. 35 5.12.1 窥视孔盖和窥视孔 ................................................................................................... 35
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