凸轮机构的设计

凸轮机构设计1、设计题目如图所示直动从动件盘形凸轮机构，其原始参数见表。据此设计该凸轮机构。（1）机构运动简图（2）凸轮机构的原始参数序号升程（MM）升程运动角（）升程运动规律升程许用压角（）回程运动角（）回程运动规律回程许用压角（）远休止角（）远休止角（）1610090等加等减速4080正弦加速度70901002凸轮推杆升程，回程运动方程及推杆位移，速度，加速度线图（1）凸轮推杆升程，回程运动方程如下A推杆升程运动方程0/2推程时20SH204V20HA00/2推程时202S024HV20AB、推杆回程运动方程000SS回程时0012INTHT00COSV2200INHATS式中（2）推杆位移，速度，加速度线图A推杆位移线图025507510012515017520022525027530032535037540005101520253035404550556065707580859095100位位位位S/MM位位位位B、速度线图025507510012515017520022525027530032535037540025225217515125107505025002505075112515175222525位位位位V/位位位位C加速度线图025507510012515017520022525027530032535037540001009008007006005004003002001000100200300400500600700800901位位位位位A/2位位位位位3、凸轮机构的线图，根据图形可确定凸轮的基圆半径和偏距。SD（1）凸轮机构的线图DS（2）确定凸轮的基圆半径和偏距做出线图的两条切线，只有在两条切线的下方，才能满足凸轮的SD瞬时压力角，由图可取，。09SM30E即基圆半径2209487RM4、绘制凸轮理论轮廓由书本上的知识滚子从动件盘形凸轮的理论轮廓满足下列方程式中0COSIN02IXEY20SRE为从动件运动规律S通过编程可做出凸轮的理论轮廓如下图MATLB20017515012510075502502550751001501251007550250255075100125150175200位位位位位位5、棍子半径的确定及凸轮理论廓线和实际廓线的绘制凸轮工作轮廓满足下列方程为从动件运动规律SS式中0COIN02IXEY20SRE2222/RRDYXXYYY为凸轮工作轮廓坐标,选定滚子半径0RM用编程可做出凸轮理论廓线和工作廓线如下图MATLB20017515012510075502502550751001501251007550250255075100125150175200程序MATLBH100R09486832981E30RR20SYMSFAI1S12H/PI/22FAI12X1SQRTR02E2S1COSFAI1ESINFAI1Y1SQRTR02E2S1SINFAI1ECOSFAI1X1X1RRDIFFY1,FAI1/SQRTDIFFX1,FAI12DIFFY1,FAI12Y1Y1RRDIFFX1,FAI1/SQRTDIFFX1,FAI12DIFFY1,FAI12FAI100001PI/4PLOTSUBSX1,FAI1,SUBSY1,FAI1HOLDONPLOTSUBSX1,FAI1,SUBSY1,FAI1HOLDONSYMSFAI2S2H2H/PI/22PI/2FAI22X2SQRTR02E2S2COSFAI2ESINFAI2Y2SQRTR02E2S2SINFAI2ECOSFAI2X2X2RRDIFFY2,FAI2/SQRTDIFFX2,FAI22DIFFY2,FAI22Y2Y2RRDIFFX2,FAI2/SQRTDIFFX2,FAI22DIFFY2,FAI22FAI2PI/40001PI/2PLOTSUBSX2,FAI2,SUBSY2,FAI2HOLDONPLOTSUBSX2,FAI2,SUBSY2,FAI2HOLDONSYMSFAI3S3HX3SQRTR02E2S3COSFAI3ESINFAI3Y3SQRTR02E2S3SINFAI3ECOSFAI3X3X3RRDIFFY3,FAI3/SQRTDIFFX3,FAI32DIFFY3,FAI32Y3Y3RRDIFFX3,FAI3/SQRTDIFFX3,FAI32DIFFY3,FAI32FAI3PI/20001PIPLOTSUBSX3,FAI3,SUBSY3,FAI3HOLDONPLOTSUBSX3,FAI3,SUBSY3,FAI3HOLDONSYMSFAI4S4H1FAI4PI/80/180PI1/2PISIN2PIFAI4PI/80/180PIX4SQRTR02E2S4COSFAI4ESINFAI4Y4SQRTR02E2S4SINFAI4ECOSFAI4X4X4RRDIFFY4,FAI4/SQRTDIFFX4,FAI42DIFFY4,FAI42Y4Y4RRDIFFX4,FAI4/SQRTDIFFX4,FAI42DIFFY4,FAI42FAI4PI0001260/180PIPLOTSUBSX4,FAI4,SUBSY4,FAI4HOLDONPLOTSUBSX4,FAI4,SUBSY4,FAI4HOLDONSYMSFAI5S50X5SQRTR02E2S5COSFAI5ESINFAI5Y5SQRTR02E2S5SINFAI5ECOSFAI5X5X5RRDIFFY5,FAI5/SQRTDIFFX5,FAI52DIFFY5,FAI52Y5Y5R