Lathes and Drills

Lathes and Drills

1. Lathe

   • Parts
     • Chuck
       • Holds the material in place.
       • 4-jaw
         • Holds the material in place whilst making it accurate
       • 3-jaw
     • Gear Levers
       • Engages and disengages the back gears.
     • Cross Slide
       • Allows facing operations to be preformed
       • Rides on the carriage.
     • Tailstock
       • Used to apply support.
       • If not used chatter can be caused on the work-piece.
     • Saddle
       • The casting that fits onto the top of the bed and slides along it is known, almost universally, as the "Saddle" - a self-explanatory and very suitable term.
     • Leadscrew
       • Runs along the side of the bed
       • Long threaded rod
   • What does it do?
     • Makes circular based objects.
     • Uses materials such as steel and plastics.
     • There are 2 kinds of lathe. Manual lathes and CNC lathes (computerised)
       • CNC lathes are programmed to do a job. They are perfect for mass production.
       • A manual lathe is less accurate and human error is a high possibility. However, they are perfects for making a single item
   • Engine Lathe
   • Bench Lathe
   • Centre Lathe

2. Drills

   • Drill Bits
     • Counter Sink
       • A tip that matches the bottom angle of a flathead wood screw
       • Creates a starting hole for your screw.
       • A fluted countersink tool
     • Spade Bit
       • Flat, steel bits with an extremely sharp point.
       • Very Fragile
     • Twist Bit
       • The most commonly used drill bit.
       • Is commonly made from HSS or carbon steel
       • Drills metals and wood but tend to go off point when drilling wood due to the flat angled tips.
       • Hardened twist bit and Pexiglas (plastic)
     • Auger Bit
       • Like twist bits with deeper flutes.
       • You will use this if you want a more pricise hole
       • Some have screw points
   • Hand Drill
     • A manual drill
     • A handle that you twist in order to create a hole
     • A drill bit can be placed in the chuck.
   • Bench Drill
     • Similar to a standing drill
     • Sits on a workbench
     • A power tool
   • Rachet Brace
     • A manual drill.
     • Drills Bigger holes than a hand drill.
     • A drill bit can be placed in the chuck.
   • Standing Drill
     • Similar to a bench drill
     • Stands by itself
     • Larger than a bench drill.

3. Vocab

   • CNC- Computer numerical control
   • Drill bit flute- The flute is a deep groove in a drill bit.
   • HSS- High Speed Steel
   • Carbon Steel- Steel that is a combination of two elements, iron and carbon
   • A Drill Bit- An attachment of a drill. Comes in many different sizes.
   • The carriage - The saddle, apron, cross slide and top
   • The Compound- The cross slide and the top

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