本科毕业论文（设计）题目小型播种机的设计学院机电工程学院专业机械设计制造及其自动化班级学号姓名指导教师起讫时间目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc420218692"设计总说明PAGEREF_Toc420218692\h1HYPERLINK\l"_Toc420218693"ThegeneraldescriptionofthedesignPAGEREF_Toc420218693\h2HYPERLINK\l"_Toc420218694"1.绪论PAGEREF_Toc420218694\h3HYPERLINK\l"_Toc420218695"1.1播种机的发展现状PAGEREF_Toc420218695\h3HYPERLINK\l"_Toc420218696"1.1.1我国播种机的发展现状PAGEREF_Toc420218696\h3HYPERLINK\l"_Toc420218697"1.1.2国外播种机械的研究现状PAGEREF_Toc420218697\h4HYPERLINK\l"_Toc420218698"1.2国内外播种机械的发展趋势PAGEREF_Toc420218698\h4HYPERLINK\l"_Toc420218699"1.3小型播种机的发展前景PAGEREF_Toc420218699\h4HYPERLINK\l"_Toc420218700"2.小型播种机依据设计和设计原理概述PAGEREF_Toc420218700\h5HYPERLINK\l"_Toc420218701"2.1小型播种机设计依据PAGEREF_Toc420218701\h5HYPERLINK\l"_Toc420218702"2.2小型播种机的原理PAGEREF_Toc420218702\h5HYPERLINK\l"_Toc420218703"3.小型播种机的总体设计PAGEREF_Toc420218703\h8HYPERLINK\l"_Toc420218704"3.1小型播种机的设计要点PAGEREF_Toc420218704\h8HYPERLINK\l"_Toc420218705"3.2播种机的主要参数的确定PAGEREF_Toc420218705\h8HYPERLINK\l"_Toc420218706"3.2.1播种机动力来源PAGEREF_Toc420218706\h8HYPERLINK\l"_Toc420218707"3.2.2播种机工作速度PAGEREF_Toc420218707\h9HYPERLINK\l"_Toc420218708"3.2.3播种机的工作功率PAGEREF_Toc420218708\h9HYPERLINK\l"_Toc420218709"4.播种机的具体设计PAGEREF_Toc420218709\h10HYPERLINK\l"_Toc420218710"4.1排种器PAGEREF_Toc420218710\h10HYPERLINK\l"_Toc420218711"4.1.1排种器作用和要求PAGEREF_Toc420218711\h10HYPERLINK\l"_Toc420218712"4.1.2排种器的选用PAGEREF_Toc420218712\h10HYPERLINK\l"_Toc420218713"4.1.3排种轮参数的选用(本论文以大豆专用排种器为例)PAGEREF_Toc420218713\h11HYPERLINK\l"_Toc420218714"4.1.4毛刷轮的参数选择PAGEREF_Toc420218714\h11HYPERLINK\l"_Toc420218715"4.2开沟器PAGEREF_Toc420218715\h12HYPERLINK\l"_Toc420218716"4.2.1开沟器要求PAGEREF_Toc420218716\h12HYPERLINK\l"_Toc420218717"4.2.2开沟器的分类PAGEREF_Toc420218717\h12HYPERLINK\l"_Toc420218718"4.2.3开沟器的设计PAGEREF_Toc420218718\h13HYPE