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+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Ch:4 Manufacturing considerations"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## exa 4-1 - Page 112"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ " LLH is 70.0 mm \n",
+ "\n",
+ " ULH is 70.013 mm \n",
+ "\n",
+ " ULS is 69.99 mm \n",
+ "\n",
+ " LLS is 69.98 mm \n",
+ "\n",
+ " Cmax is 0.031 mm \n",
+ "\n",
+ " Cmin is 0.010 mm \n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import sqrt\n",
+ "d=70#\n",
+ "dmin=50#\n",
+ "dmax=80#\n",
+ "D=sqrt(dmin*dmax)#\n",
+ "D=63#\n",
+ "i=0.458*(D**(1/3))+(0.001*D)#\n",
+ "\n",
+ "#standard tolerance for H8 is ST1\n",
+ "ST1=25*i#\n",
+ "ST1=ST1*10**-3#\n",
+ "#standard tolerance of shaft for grade g7 is ST2\n",
+ "ST2=16*i#\n",
+ "ST2=ST2*10**-3#\n",
+ "es=-(2.5*(D**0.333))#\n",
+ "es=es*10**-3#\n",
+ "ei=es-ST2#\n",
+ "#Lower limit for hole is LLH\n",
+ "#Upper limit for hole is ULH\n",
+ "#Upper limit for shaft is ULS\n",
+ "#Lower limit for shaft is LLS\n",
+ "LLH=d#\n",
+ "ULH=LLH+ST1#\n",
+ "ULS=LLH+es#\n",
+ "LLS=ULS-ST2#\n",
+ "#Maximum clearance is Cmax\n",
+ "#minimum clearance is Cmin\n",
+ "Cmax=ULH-LLS#\n",
+ "Cmin=LLH-ULS#\n",
+ "# printing data in scilab o/p window\n",
+ "print \" LLH is %0.1f mm \"%(LLH)#\n",
+ "print \"\\n ULH is %0.3f mm \"%(ULH)#\n",
+ "print \"\\n ULS is %0.2f mm \"%(ULS)#\n",
+ "print \"\\n LLS is %0.2f mm \"%(LLS)#\n",
+ "print \"\\n Cmax is %0.3f mm \"%(Cmax)#\n",
+ "print \"\\n Cmin is %0.3f mm \"%(Cmin)#"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## exa 4-2 - Page 112"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Cmax is 0.041 mm \n",
+ "\n",
+ "Cmin is 0.007 mm \n"
+ ]
+ }
+ ],
+ "source": [
+ "d=25#\n",
+ "#Lower limit for hole is LLH\n",
+ "#Upper limit for hole is ULH\n",
+ "#Upper limit for shaft is ULS\n",
+ "#Lower limit for shaft is LLS\n",
+ "ULH=d+0.021#\n",
+ "LLH=d+0#\n",
+ "ULS=d+0.041#\n",
+ "LLS=d+0.028#\n",
+ "#Maximum interference is Cmax\n",
+ "#minimum interference is Cmin\n",
+ "Cmax=ULS-LLH#\n",
+ "Cmin=LLS-ULH#\n",
+ "# printing data in scilab o/p window\n",
+ "print \"Cmax is %0.3f mm \"%(Cmax)#\n",
+ "print \"\\nCmin is %0.3f mm \"%(Cmin)#"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## exa 4-3 - Page 113"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ " ULH is 50.039 mm \n",
+ "\n",
+ " LLH is 50.000 mm \n",
+ "\n",
+ " ULS is 49.991 mm \n",
+ "\n",
+ " LLS is 49.966 mm \n",
+ "\n",
+ " Cmax is 0.073 mm \n",
+ "\n",
+ " Cmin is 0.009 mm \n",
+ " Therefore, H8g7 is easy running fit\n"
+ ]
+ }
+ ],
+ "source": [
+ "d=50#\n",
+ "Es=0.039#\n",
+ "Ei=0#\n",
+ "es=-9*10**-3#\n",
+ "ei=-34*10**-3#\n",
+ "#Shaft dia is D\n",
+ "D=d+es#\n",
+ "#Lower limit for hole is LLH\n",
+ "#Upper limit for hole is ULH\n",
+ "#Upper limit for shaft is ULS\n",
+ "#Lower limit for shaft is LLS\n",
+ "ULH=d+Es#\n",
+ "LLH=d+Ei#\n",
+ "ULS=d+es#\n",
+ "LLS=d+ei#\n",
+ "#Maximum interference is Cmax\n",
+ "#minimum interference is Cmin\n",
+ "Cmax=ULH-LLS#\n",
+ "Cmin=LLH-ULS#\n",
+ " # printing data in scilab o/p window\n",
+ "print \" ULH is %0.3f mm \"%(ULH)#\n",
+ "print \"\\n LLH is %0.3f mm \"%(LLH)#\n",
+ "print \"\\n ULS is %0.3f mm \"%(ULS)#\n",
+ "print \"\\n LLS is %0.3f mm \"%(LLS)#\n",
+ "print \"\\n Cmax is %0.3f mm \"%(Cmax)#\n",
+ "print \"\\n Cmin is %0.3f mm \"%(Cmin)#\n",
+ "print ' Therefore, H8g7 is easy running fit'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## exa 4-3 - Page 114"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ " ULH is 30.025 mm \n",
+ "\n",
+ " LLH is 30.000 mm \n",
+ "\n",
+ " ULS is 30.011 mm \n",
+ "\n",
+ " LLS is 29.995 mm \n",
+ "\n",
+ " Cmax is 0.030 mm \n",
+ "\n",
+ " Cmin is 0.011 mm \n"
+ ]
+ }
+ ],
+ "source": [
+ "d=30#\n",
+ "Es=0.025#\n",
+ "Ei=0#\n",
+ "es=11*10**-3#\n",
+ "ei=-5*10**-3#\n",
+ "#Shaft dia is D\n",
+ "D=d+es#\n",
+ "#Lower limit for hole is LLH\n",
+ "#Upper limit for hole is ULH\n",
+ "#Upper limit for shaft is ULS\n",
+ "#Lower limit for shaft is LLS\n",
+ "ULH=d+Es#\n",
+ "LLH=d+Ei#\n",
+ "ULS=d+es#\n",
+ "LLS=d+ei#\n",
+ "#Maximum interference is Cmax\n",
+ "#minimum interference is Cmin\n",
+ "Cmax=ULH-LLS#\n",
+ "Cmin=ULS-LLH##\n",
+ "\n",
+ " # printing data in scilab o/p window\n",
+ "print \" ULH is %0.3f mm \"%(ULH)#\n",
+ "print \"\\n LLH is %0.3f mm \"%(LLH)#\n",
+ "print \"\\n ULS is %0.3f mm \"%(ULS)#\n",
+ "print \"\\n LLS is %0.3f mm \"%(LLS)#\n",
+ "print \"\\n Cmax is %0.3f mm \"%(Cmax)#\n",
+ "print \"\\n Cmin is %0.3f mm \"%(Cmin)#"
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 2",
+ "language": "python",
+ "name": "python2"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 2
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython2",
+ "version": "2.7.9"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
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