Saravanan P WELCOME. Saravanan P General Manufacturing Metal Removing( Machining) Metal Joining (...
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Transcript of Saravanan P WELCOME. Saravanan P General Manufacturing Metal Removing( Machining) Metal Joining (...
Saravanan P
WELCOME
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General Manufacturing
Metal Removing( Machining) Metal Joining ( Welding, Brazing
and Soldering) Metal Forming & Casting
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Machining Processes
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Turning, Drilling and Milling
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Turning, Drilling and Milling related Operations
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Lathe
Lathe is a machine tool which is power operated and removes metal in the form of chip.
Basic MotionsWork-Piece – Rotation.Cutting Tool – Linear Movement.
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Mini Lathe
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LATHE
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Lathe Terminology
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Lathe – Safety Aspects
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Single Point Cutting Tool
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Tool Blanks
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Cutting Tool Angles (Single Point)
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Some Cutting Tools
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Cutting Parameters
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Cutting Speed(v)
This is the speed at which work-piece travels against the tool’s Cutting edge.
Formula to find out this is “ V=DN”Where
V – Cutting Speed in “mm/min”.D - Diameter of the work-piece in “mm”.N - Rotation of the spindle in “rpm”.rpm – Rotations per minute.
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Feed(f)
Feed is the distance traveled by the tool cutting edge into the work-piece during one rotation of the work-piece in the longitudinal direction( Parallel to the lathe axis).
It is in “mm/revolution”
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Depth of Cut(d)
Depth of Cut is the amount of penetration of the tool tip into the Work-piece in the transverse( Perpendicular to the lathe axis) direction.
It is in “ mm”
“d” can be more for rough turning,( 2 to 4mm) “d” should be very less for the finish turning
( .25 to 1mm)
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Work Holding Devices
3- Jaw Chuck 4- Jaw ChuckMagnetic Chuck centers Collets Chuck Face Plate Angle Plate Dogs Steady Rest Follower Rest
Etc…
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3-Jaw Chuck
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4 - Jaw Chuck
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Centering Cylindrical Job in a 4- Jaw Chuck
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Jaw Position
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Live Center
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Collets Chuck
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Arbor and Chuck
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Steady Rest
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Follower Rest
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Face Plate (Checking the Run-Out)
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Steps of Operations for the Given Job
Job Setting Tool Setting Facing Center Drilling Rough Turning Finish Turning Checking the Dimensions
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Tool Setting
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Facing Operation
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Continues…
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Continues…
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Center Drills
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Drilling at Lathe
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Boring On a Lathe
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Turning Operation
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Continues…
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Shoulder Flattening
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Parting Tools
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Parting Tool
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Parting Process
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Continues…
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Non- Cylindrical Object Turning
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Continues…
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SHAPER
Shaper is a Machine Tool which is power operated and removes the metal in the form of chip with the Cutting tool attached to a reciprocating ram.
Basic Motions areWork piece – Stationary
Cutting Tool – Reciprocating.
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Shaper 1
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Shaper 2
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Use of Quick Return Mechanism
Quick Return Mechanism in shaper reduces the un-Productive time by speeding up the return stroke.
Forward Stroke – Cutting takes place Return Stroke - Un-productive
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Shaper – Quick Return Mechanism
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Hydraulic Shaper
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Dial Indicator
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Lathe Bed(Flat) and Tail Stock
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Behind Apron
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Cross Slide
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Compound Rest
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Swivel Plate
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Tool Post
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Lead Screw and Power Feed
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Half Nut and Engaging Leaver
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Gears at the Head-Stock
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Tail-Stock