机械机电专业论文

内蒙古工业大学毕业论文I摘要该设计的对称传动剪板机，其冲剪力为10吨，滑块的行程为22mm，每分钟剪切30次。由电动机提供动力，经过一级带传动和一级齿轮传动减速。设计中采用的执行机构为对心曲柄滑块机构，这一机构将剪板机传动系统的旋转运动转变为滑块的往复直线运动，实现对板料的剪切。曲柄滑块机构具有结构简单、加工容易、维修方便、经济实用的优点，在机械设备中应用广泛。本设计中，通过对平面曲柄滑块机构的数学建模，用TurborC编程，输入曲柄滑块机构的机构参数和运功参数，实现对整个机构运动过程的仿真。关键词：TurborC运动仿真曲柄滑块剪板机内蒙古工业大学毕业论文IIAbstractThedesignofsymmetrictransmissionshears,shear-to10tons,theitineraryfortheslider22mmper30minutesshear.PoweredbythemotorthroughabeltdriveandaslowdownGear.Designoftheimplementationagenciesrightmindcrankslider,Thiswillshearstransmissionrotationsliderintothereciprocatinglinearmotion,therealizationoftherightofsheetmetalshear.Cranksliderissimpleinstructure,easyprocessing,easytomaintainandrepair,economicandpracticaladvantagesinmachinery,equipmentwidelyused.Thedesign,rightthroughtheplanecrankslidermathematicalmodeling,TurborCprogramming,inputslidercrankagenciesthatsuchremarksparametersandtheparametersofthewholemovementofthesimulationprocess.Keywords:TurborCMotionsimulationCrankandslideblockCuttingmachine内蒙古工业大学毕业论文III目录摘要................................................................IAbstract...........................................................II第1章绪论........................................................1第2章方案论证....................................................22.1液压传动方案.........................................22.2机械传动方案.........................................32.2.1凸轮机构方案...........................................32.2.2曲柄滑块机构方案.......................................4第3章总体传动方案................................................5第4章电动机的选择................................................64.1电动机类型和结构形式的选择...............................64.2电动机功率的选择.........................................64.3计算传动装置的运动和动力参数............................84.3.1计算传动装置的合理传动比...............................84.3.2计算运动和动力参数.....................................8第5章带传动的设计及计算.........................................105.1确定计算功率............................................105.2选择带型................................................105.3确定小带轮的基准直径....................................105.3.1初选小带轮的基准直径..................................105.3.2验算带的速度..........................................115.3.3计算从动轮的基准直径..................................115.4确定中心距a和带轮的基准长度............................115.5验算主动轮上的包角......................................125.6确定带的根数............................................13内蒙古工业大学毕业论文IV5.7确定带的预紧力..........................................135.8计算带传动作用在轴上压轴力..............................145.9带轮结构的设计..........................................145.9.1小带轮的结构设计......................................145.9.2大带轮的结构设计......................................16第6章轴的设计...................................................196.1主动轴设计..............................................196.1.1轴的材料..............................................196.1.2轴径的最小许用值.....................................206.1.3确定轴上的零件的装配方案..............................206.1.4轴上的零件定位.......................................206.1.5轴各段直径和长度的确定................................206.1.6绘制主轴上零件的装配图及轴的结构图..................206.1.7轴的强度校核计算......................................216.2从动轴的设计............................................236.2.1材料选择..............................................236.2.2轴径的最小许用值......................................246.2.3确定轴上零件的装配方案................................246.2.4绘制从动轴上零件的装配图及轴的结构图..................24第7章齿轮设计...................................................257.1选定齿轮类型、精度等级、材料及齿数......................257.1.1齿轮类型的选择........................................257.1.2齿轮材料的选择........................................257.1.3选取精度等级..........................................257.1.4选择齿数..............................................257.2按齿面接触强度设计......................................257.2.1确定公式内的各个计算数值..............................257.2.2计算..................................................267.3按齿根弯曲强度设计......................................287.3.1确定公式内各计算数值..................................28内蒙古工业大学毕业论文V7.3.2设计计算..............................................297.4几何尺寸计算............................................307.4.1计算分度圆直径........................................307.4.2计算中心距............................................307.4.3计算齿轮宽度..........................................307.5验算....................................................307.6结构设计及绘制齿轮零件图................................317.6.1对小齿轮的结构设计....................................317.6.2对大齿轮的机构设计....................................31第8章曲柄滑块机构设计...........................................348.1材料的选择..............................................348.2确定曲柄滑块杆件长度....................................348.3结构设计................................................358.4强度校核................................................368.5电动机的校核............................................37第9章曲柄滑块机构的运动学分析...................................389.1建立曲柄滑块机构的数学模型..............................389.1.1建立位移方程..........................................389.1.2建立速度方程.....................................