机械原理习题解答,主讲：邓颖聪 08级硕士研究生 Tel:13120808147 E-mail:ycdengsjtu.edu.cn,习题,自由度F=0,曲柄滑块机构,n = 3 PL = 3 PH = 2 F = 3n-2PL-PH = 1,n = 5 PL = 7 PH = 0 F = 3n-2PL-PH = 1,n = 5 PL = 7 PH = 0 F = 3n-2PL-PH = 1,n = 5 PL = 7 PH = 0 F = 3n-2PL-PH = 1,n = 7 PL = 10 PH = 0 F = 3n-2PL-PH = 1,n = 7 PL = 9 PH = 1 F = 3n-2PL-PH = 2,2P2R,2P1R,习题,31 试求机构在图示位置时的所有瞬心。,P24,P13,P13,P24,P13,P13,P24,P24,P34,P13,P13,P24,P12,P13,P24,习题,方向,大小,p,e,b,c,解：,速度多变形：,p,e,b,c,p,b,c,c,c,e,e,e,加速度多边形,速度多边形,习题,2、标准参数及基本尺寸,解：,习题,其余的代公式,习题,解：,习题,解：,其中，,解得：,故而：,习题,n3= -154.3r/min,H,其中，,例题与习题,习题,习题,Je= J1(z2/z1)2 + J2 + m4(l2 sin2)2 Me= M1(z2/z1) - Fr4 l2 sin2,习题,