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INTRODUCTION
HISTORY AND DEVELOPMENT
NEWER MACHINING PROCESS
ADVANTAGES OF NEWER MACHINING
CATEGORIES OF NON CONVENTIONAL MACHINING
ELECTRICAL METHOD
THERMAL METHOD
CHEMICAL METHOD
APPLICATION OF NCM TECHNIQUES
NON CONVENTIONAL MACHINES
IT IS DIFFICULT TO MACHINE MATERIALS SUCH AS NITROALLOY, CARBIDES, STAINLESS STEEL, HEAT-RESISTINGSTEELS, ETC.
MANY OF THESE MATERIALS ARE USED DUE TO THEIR HIGHSTRENGTH- TO-WEIGHT RATIO, HARDNESS, AND HEAT-RESISTING QUALITIES
SERIOUSNESS OF PROBLEMS BEING FACED IN MACHINING OFHARD AND HEAT RESISTANT MATERIAL IN 1960
CONVENTIONAL TOOL FOR METAL REMOVAL NOT USED
DIRECTLY UTILIZE SOME FORM OF ENERGY FOR METALMACHINING
NON CONVENTIONAL MACHINES INTRODUCTION
MERCHANT IN 1960'S EMPHASIZED THE NEED FOR THEDEVELOPMENT OF NEWER CONCEPTS IN METAL MACHINING.
CONSEQUENTLY, NON-CONVENTIONAL MACHININGPROCESSES ARE ADOPTED
THESE PROCESSES ARE NON-CONVENTIONAL
THEY DO NOT EMPLOY A CONVENTIONAL TOOL FOR METALREMOVAL
INSTEAD, THEY DIRECTLY UTILIZE SOME FORM OF ENERGY
NON CONVENTIONAL MACHINES HISTORY AND DEVELOPMENT
NON CONVENTIONAL MACHINES NEWER MACHINING PROCESS IT DIFFERS FROM CONVENTIONAL MACHINING PROCESS
IN CONVENTIONAL MACHINING PROCESS A TOOL IS FORCEDON THE WORK-PIECE
IN THIS PROCESS, METAL REMOVAL TAKES PLACE DUE TOSHEARING ACTION
IN NEWER MACHINING PROCESS, TOOL NEED NOT TO BEHARDER THAN THE WORK-PIECE
WORK-PIECE IS NOT SUBJECTED TO UNDERGO ANY STRESS
NON CONVENTIONAL MACHINES ADVANTAGES OF NEWER MACHINING INCREASES PRODUCTIVITY
REDUCED REJECTION
REDUCED BREAKAGE OF FRAGILE WORK-PIECES DURING PROCESS
WORK WITH CLOSE TOLERANCE, SMALL DIMENSIONS AND HOLES ARE POSSIBLE
THE TOOL MATERIAL NEED NOT BE HARDER THAN THE WORK-PIECE
THESE MACHINES CAN BE OPERATED BY CNC AND ADAPTIVE CONTROL IS ALSO POSSIBLE
ASSURES RELIABILITY AND REPEATABILITY OF COMPONENTS
NON CONVENTIONAL MACHINES ADVANTAGES OF NEWER MACHINING HIGH STRENGTH TEMPERATURE RESISTANT (HSTR)
MATERIAL, BOTH METALLIC AND NON-METALLIC CAN BEMACHINED, MARKED, WELDED AND CUT
THE MACHINED SURFACES DO NOT HAVE RESIDUALSTRESSES
COMPLEX SHAPES CAN BE MACHINED
NON CONVENTIONAL MACHINES CATEGORIES OF NON CONVENTIONAL MACHINING ELECTRICAL METHOD
PRINCIPLE OF LECTROLYSIS
ALSO CALLED ‘ANODE DISSOLUTION’
NON CONVENTIONAL MACHINES CATEGORIES OF NON CONVENTIONAL MACHINING THERMAL METHOD
REMOVES MATERIAL BY MELTING
VAPORIZATION CAUSED DUE TO THERMAL CHANGES
NON CONVENTIONAL MACHINES CATEGORIES OF NON CONVENTIONAL MACHINING CHEMICAL METHOD
METHOD RELIES ON METALS THAT ARE EASILY REACATED BY SOMECHEMICALS FOR EROSION
NON CONVENTIONAL MACHINES APPLICATION OF NCM TECHNIQUES AJM (ABRASIVE JET MACHINING)
SUITABLE FOR MACHINING SUPER ALLOYS
REFRACTORY MATERIALS SUCH AS CERAMICS AND GLASS
USED FOR MACHINING PLASTICS.
NON CONVENTIONAL MACHINES APPLICATION OF NCM TECHNIQUES USM (ULRASONIC MACHINING)
GOOD MACHINING PERFORMANCE FORREFRACTORY TYPE MATERIALSCERAMICS AND GLASS
USED FOR MACHINING PLASTICS.
NON CONVENTIONAL MACHINES APPLICATION OF NCM TECHNIQUES EDM
USED FOR MACHINING STEEL, SUPER ALLOYS, TITANIUM ANDREFRACTORY MATERIALS
CANNOT BE USED FOR MACHINING NON-CONDUCTING MATERIALS
NON CONVENTIONAL MACHINES APPLICATION OF NCM TECHNIQUES ECM
USED FOR MACHINING STEEL AND SUPER ALLOYS CANNOT MACHINE NON-CONDUCTING MATERIALS LIKE CERAMICS,
PLASTICS AND GLASS.
NON CONVENTIONAL MACHINES APPLICATION OF NCM TECHNIQUES EBM (ELECTRON BEAM MACHINING)
MOST SUITABLE FOR MACHINING REFRACTORY MATERIALS
MEDIUM PERFORMANCE ON GLASS AND PLASTICS.
NON CONVENTIONAL MACHINES APPLICATION OF NCM TECHNIQUES LBM (LASER BEAM MACHINING)
CAN MACHINE ANY SUBSTANCE
SUITABLE FOR REFRACTORY MATERIALS SUCH AS CERAMICS
A MEDIUM PERFORMANCE ON GLASS AND PLASTICS
NON CONVENTIONAL MACHINES APPLICATION OF NCM TECHNIQUES PAM (PLASMA ARC MACHINING)
SUITABLE FOR MACHINING ALUMINIUM, STEEL AND SUPER ALLOYS NOT SUITABLE FOR MACHINING CERAMICS AND GLASS
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