NON CONVENTIONAL MACHINES

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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