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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
-}
generated by cgit (git 2.34.1) at 2024-12-20 07:59:25 +0000