机械原理课程设计-压床六连杆机构设计说明书

.52m/sР= + Р大小? 0.52 ?Р方向⊥CD ⊥AB ⊥BCР选取比例尺=(0.01m/s)/mm,做速度多边形如下:Р=·=0.0130.92=0.3092m/sР=·=0.0132.84=0.3284m/sР=·=0.0146.38=0.4638m/sР =·=0.0141.08=0.4108m/sР=·=0.0118.75=0.1875m/sР=·=0.0139.52=0.592m/sР=·=0.0123.19=0.2319m/s Р∴==1.408rad/sР∴==3.092rad/sР∴ω==5.0rad/sР‚.时的加速度分析:Р=ω12lAB=5.404m/s2Р=ω22lBC=0.462m/s2Р=ω32lCD=0.956m/s2 Р= + = + + Р大小: ? √? √√?Р方向: ? C→D ⊥CD B→A C→B ⊥BC Р选取比例尺=(0.1)/mm,作加速度多边形:Р=·=0.1×40.36 =4.036m/s2Р=·=0.1×60.54 =6.054m/s2Р=·=0.1×34.12 =3.412 m/s2Р=·=0.1×39.21 =3.921m/s2Р = + + Р大小? √√?Р方向√√ F→E ⊥EFР=·=6.841 m/s2Р=·=4.443m/s2Р=·=3.023m/s2Р= /=14.631rad/s2 -Р= /=39.12rad/s2Р机构运动分析:Р时的速度分析:Р已知n=100 r/min,所以=2/60=10.47 rad/sР∴==0.52m/sР= + Р大小? 0.52 ?Р方向⊥CD ⊥AB ⊥BCР选取比例尺=(0.01m/s)/mm,做速度多边形如下:Р=·=0.0137.68=0.3768m/sР=·=0.0132.55=0.3255m/sР=·=0.0156.36=0.5636m/s