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{
"metadata": {
"name": "",
"signature": "sha256:765c555912cbe4c0c322320d21d6db5068ffa5998304ec2dc51a4fde049316b1"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter9-Cams and Followers"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex2-pg247"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"##CHAPTER 9 ILLUSRTATION 2 PAGE NO 247\n",
"##TITLE:CAMS AND FOLLOWERS\n",
"import math\n",
"pi=3.141\n",
"s=4.## follower movement in cm\n",
"theta=60.## cam rotation in degrees\n",
"THETA=60.*pi/180## cam rotation in rad\n",
"thetaD=45.## after outstroke in degrees\n",
"thetaR=90.##....angle with which it reaches its original position in degrees\n",
"THETAR=90.*pi/180## angle with which it reaches its original position in rad\n",
"THETAd=360.-theta-thetaD-thetaR## angle after return stroke in degrees\n",
"N=300.## speed in rpm\n",
"w=2.*pi*N/60.## speed in rad/s\n",
"Vo=pi*w*s/2./THETA## Maximum velocity of follower during outstroke in cm/s\n",
"Vr=pi*w*s/2./THETAR## Maximum velocity of follower during return stroke in cm/s\n",
"Fo=pi**2.*w**2.*s/2./THETA**2./100.##Maximum acceleration of follower during outstroke in m/s**2 \n",
"Fr=pi**2.*w**2.*s/2./THETAR**2/100.##Maximum acceleration of follower during return stroke in m/s**2\n",
"print'%s %.1f %s %.1f %s '%('Maximum acceleration of follower during outstroke =',Fo,' m/s**2''Maximum acceleration of follower during return stroke= ',Fr,' m/s**2')\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Maximum acceleration of follower during outstroke = 177.6 m/s**2Maximum acceleration of follower during return stroke= 78.9 m/s**2 \n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex3-pg249"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"##CHAPTER 9 ILLUSRTATION 3 PAGE NO 249\n",
"##TITLE:CAMS AND FOLLOWERS\n",
"import math\n",
"pi=3.141\n",
"s=5.## follower movement in cm\n",
"theta=120.## cam rotation in degrees\n",
"THETA=theta*pi/180.## cam rotation in rad\n",
"thetaD=30.## after outstroke in degrees\n",
"thetaR=60.##....angle with which it reaches its original position in degrees\n",
"THETAR=60.*pi/180.## angle with which it reaches its original position in rad\n",
"THETAd=360.-theta-thetaD-thetaR## angle after return stroke in degrees\n",
"N=100.## speed in rpm\n",
"w=2.*pi*N/60.## speed in rad/s\n",
"Vo=pi*w*s/2./THETA## Maximum velocity of follower during outstroke in cm/s\n",
"Vr=pi*w*s/2./THETAR## Maximum velocity of follower during return stroke in cm/s\n",
"Fo=pi**2.*w**2.*s/2./THETA**2./100.##Maximum acceleration of follower during outstroke in m/s**2\n",
"Fr=pi**2*w**2.*s/2./THETAR**2/100.##Maximum acceleration of follower during return stroke in m/s**2\n",
"print'%s %.1f %s %.1f %s '%('Maximum acceleration of follower during outstroke =',Fo,' m/s**2''Maximum acceleration of follower during return stroke= ',Fr,' m/s**2')\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Maximum acceleration of follower during outstroke = 6.2 m/s**2Maximum acceleration of follower during return stroke= 24.7 m/s**2 \n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex5-pg252"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"##CHAPTER 9 ILLUSRTATION 5 PAGE NO 252\n",
"##TITLE:CAMS AND FOLLOWERS\n",
"import math\n",
"pi=3.141\n",
"N=1000.## speed of cam in rpm\n",
"w=2.*pi*N/60.## angular speed in rad/s\n",
"s=2.5## stroke of the follower in cm\n",
"THETA=120.*pi/180.## ANGULAR DISPLACEMENT OF CAM DURING OUTSTROKE IN RAD\n",
"THETAR=90.*pi/180.##ANGULAR DISPLACEMENT OF CAM DURING DWELL IN RAD\n",
"Vo=2.*w*s/THETA## Maximum velocity of follower during outstroke in cm/s\n",
"Vr=2.*w*s/THETAR##Maximum velocity of follower during return stroke in cm/s\n",
"Fo=4.*w**2.*s/THETA**2.##Maximum acceleration of follower during outstroke in m/s**2\n",
"Fr=4.*w**2.*s/THETAR**2.##Maximum acceleration of follower during return stroke in m/s**2\n",
"print'%s %.1f %s %.1f %s '%('Maximum acceleration of follower during outstroke =',Fo,' m/s**2''Maximum acceleration of follower during return stroke= ',Fr,' m/s**2')\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Maximum acceleration of follower during outstroke = 25000.0 m/s**2Maximum acceleration of follower during return stroke= 44444.4 m/s**2 \n"
]
}
],
"prompt_number": 1
}
],
"metadata": {}
}
]
}
|
