Lathe presentation1 to_be_class_
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Transcript of Lathe presentation1 to_be_class_
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Machine tool• A machine which performs the material
removal operation with tools, to produce desired shape and size of the work pieces
• The purpose of machine tool is to save the time, cost of production and to get better output which can not be obtained with hand tools
• Ex: lathes, shapers, planers, drilling machines and grinding machines etc
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ENGINE CENTRE LATHE
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Lathe • The lathe is one of the most important
machines in any workshop• Its main objective is to remove material from
outside by rotating the work against the cutting tool
• Lathe is used to produce cylindrical jobs• Also used for drilling, threading, grinding and
milling etc
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Working principle of lathe
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Working principle of lathe• The work piece is held in a chuck or between
centres and rotated about its axis at a uniform speed
• The cutting tool is held in the tool post is fed into a work piece for a desired depth and in the desired direction
• Material is removed in form of chips and the desired shape is obtained.
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Types of lathes
• Speed lathe• Engine or centre lathe• Tool room lathe• Capstan and turret lathe• Automatic lathe• Special purpose lathe
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CARRAIGE ASSEMBLY
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CARRAIGE ASSEMBLY
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SPLIT NUT ASSEMBLY
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FOUR JAW CHUCK
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COLLET CHUCK
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COLLET CHUCK
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THREE JAW CHUCK
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LIVE AND DEAD CENTRES
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LIVE CENTER
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TAIL STOCK
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SINGLE POINT CUTTUNG TOOL
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LATHE TOOLS
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KNURLING TOOL
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LATHE OPERATIONS
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MACHINING PROPERTIES
• FEED: The distance by which the tool advanced between two consecutive cuts.
• Depth Of cut : The advancement of the tool into workpiece in transverse direction.
• Cutting Speed: The speed at which the spindle is rotating and machining is being done.
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TAPER TURNING OPERATIONS
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GROOVING OPERATION