62.环形螺旋线 x=(50+10*sin(t*360*15))*cos(t*360) y=(50+10*sin(t*360*15))*sin(t*360) z=10*cos(t*360*5) 
图62
63.内接弹簧 x=2*cos(t*360*10)+cos(t*180*10) y=2*sin(t*360*10)+sin(t*180*10) z=t*6
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图63
64.多变内接式弹簧
x=3*cos(t*360*8)-1.5*cos(t*480*8) y=3*sin(t*360*8)-1.5*sin(t*480*8) z=t*8 
图64
65.柱面正弦波线
柱坐标: 方程 r=30 theta=t*360 z=5*sin(5*theta-90) 
图65
66. ufo (漩涡线) 球坐标: rho=t*20^2 theta=t*log(30)*60 phi=t*7200 
图66
67. 手把曲线
thta0=t*360 thta1=t*360*6 r0=400 r1=40 r=r0+r1*cos(thta1) x=r*cos(thta0) y=r1*sin(thta1) z=0 
图67
68.篮子
圆柱坐标 r=5+0.3*sin(t*180)+t theta=t*360*30 z=t*5 
图68
69. 圆柱齿轮齿廓的渐开线方程:
afa=60*t x=10*cos(afa)+pi*10*afa/180*sin(afa) x=10*sin(afa)-pi*10*afa/180*cos(afa) z=0 注:afa为压力角,取值范围是0到60,10为基圆半径。 
图69
70.对数螺旋曲线
柱坐标: r=sqrt(theta) theta=t*360*30 z=0 
图70
71. 罩形线
球坐标: rho=4 theta=t*60 phi=t*360*10 
图71
72. 向日葵线
theta=t*360 r=30+10*sin(theta*30) z=0 
图72
73. 太阳线
r=1.5*cos(50*theta)+1 theta=t*360 z=0 
图73
74 塔形螺旋线
r=t*80+50 theta=t*360*10 z=t*80 
图74
75 花瓣线
球坐标: rho=t*20 theta=t*360*90 phi=t*360*10 
图75
76 双元宝线
r=sin(t*360*10)+30 theta=sin(t*360*15) z=sin(t*3) 
图76
77 阿基米德螺线的变形(自己想得) 不知前面有没有??:what 柱坐标下: theta=360*2*(t-0.5) r=10*theta z=0

图77
78 改过来的渐开线方程 r=20 ang = t*360 x=r*cos(ang)+2*pi*r*t*sin(ang) y=r*sin(ang)-2*pi*r*t*cos(ang) z=0
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图78
79 双鱼曲线 |