《角磨机使用安全》PPT课件.ppt

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1、Grinding machine&wheelsSurface GrinderMini-Surface GrinderRPM=6600RPM=9000Grinding machine&wheelsMini-straight Grinder&Its compatible wheels RPM=18000Grinding machine&wheelsPedestal GrinderRPM=2300Grinding wheelBack flangeAdopter NutGrinderMounting of Depressed Centre wheel on Surface GrinderGuardGr

2、inding wheelAdopter NutGrinderUnsafe Method Mounting of Wheel on Surface GrinderThe back flange Not usedGrinding wheelBack flangeGrinderUnsafe Method Mounting of Wheel on Surface GrinderAdaptor nut not usedGrinding wheelBack flangeAdopter NutGrinderUnsafe Method Mounting of Wheel on Surface GrinderW

3、heel used as support for paper wheelGrinding wheelAdopter NutGrinder Unsafe Method Mounting of Wheel on Surface GrinderOld used wheel or Metal plates used in place of back flangeGrinding wheelBack flangeAdopter NutGrinderUnsafe Method Mounting of Wheel on Surface GrinderCut-off wheel is used instead

4、 of Depressed centre wheel Unsafe Method Mounting of Wheel on Surface GrinderM/c RPM 6600Wheel RPM 6500Grinding wheel RPM is less than RPM of the machine Grinding wheelBack flangeAdopter NutGrinderMounting of Depressed Centre wheel on Surface GrinderGrinding machine&wheelsStraight Grinder RPM=5630Gr

5、inding wheel flangeNutGrinderUnsafe method of mounting of wheel on Straight Grinder“D”d=D/3GuardsGrinding wheelGrinderMounting of Grinding wheel on Straight GrinderUsing flange on one side only GrinderMounting of Grinding wheel on Straight GrinderGrinderProviding smaller size of flanges Providing di

6、fferent size of flanges on both sides dD/3GrinderMounting of Grinding wheel on Straight GrinderNut not mounted fully on the spindle of the grinder Guard missingGrinderMounting of Grinding wheel on Straight GrinderFlanges are put in reverse way Grinding wheel flangeNutGrinderMounting of Grinding whee

7、l on Straight Grinder“D”d=D/3Precautions Before&During UsageFlangesMountingMachineVisual InspectionLabelsSafety DevicesFLANGESFlanges are very importantBoth flanges DIA to be sameFlange DIA to be atleast 1/3 dia of wheelFlanges must be relievedMOUNTINGWheel must easily fit on the spindle.MUST NOT BE

8、 LOOSEIt bore is tight keep the wheel aside.DO NOT TRY TO INCREASE BORE SIZEMACHINEMachine should be well maintained.There should be no vibrationThere should be no belt slipageBearing should be in good conditionVISUAL INSPECTIONVisually inspect wheel for cracksCheck for damage during storage/transit

9、/handlingDo not use such wheelCHECK LABELSMaximum operating speed(MOS)is mentioned on the wheel.Ensure machine speed is less than MOSResin bonded wheels have expiry date.See that the expiry date has not passedRead safety and implement LOGOS on the labelSAFETY DEVICESUse machine guardsUse Ear PlugUse Face shieldMost importantUse the wheel in the manner it is designed forIf correctly used they are very useful toolsIf incorrectly used “Make sure God is on your side”