010 lathe

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010 lathe

  1. 1. THE LATHE
  2. 2. Lathe Machine <ul><li>An engine lathe is a power-driven, general-purpose machine used for producing cylindrical work-pieces . </li></ul><ul><li>By using attachments and accessories , other operations such as: </li></ul><ul><li>Tapering </li></ul><ul><li>Chamfering </li></ul><ul><li>Threading </li></ul><ul><li>Boring </li></ul><ul><li>Reaming </li></ul><ul><li>Knurling </li></ul><ul><li>Facing </li></ul><ul><li>Turning and </li></ul><ul><li>Polishing may be performed. </li></ul>
  3. 3. Parts of the Lathe Bed Headstock Quick-change gearbox Tailstock Carriage Speed Change Levers Base
  4. 4. Bed <ul><li>The bed is a heavy, rugged casting made to support the working parts of the lathe. </li></ul>Bed
  5. 5. Headstock <ul><li>The headstock is clamped on the left-hand side of the bed. </li></ul><ul><li>The headstock spindle , a hollow cylindrical bar supported by bearings, provides a drive through gears or pulleys from the motor to work-holding devices. </li></ul>Headstock spindle Headstock
  6. 6. Headstock Headstock spindle
  7. 7. Quick-Change Gearbox <ul><li>The quick-change gearbox , containing number of different gears, provides the feed rod and lead screw with various speeds for turning and thread-cutting operations. </li></ul>
  8. 8. Feed rod and Lead Screw Feed Rod Lead Screw
  9. 9. Carriage <ul><li>The carriage consists of three main parts, the saddle, cross slide, and apron. </li></ul>Tool Holder Apron Cross slide Saddle
  10. 10. Tailstock <ul><li>Provide support for the right-hand end of the work. </li></ul><ul><li>Can also be used to provide a hand feed for drilling and reaming operations. </li></ul>Tailstock hand wheel Tail stock clamp lever Drill Chuck Spindle clamp
  11. 11. Lathe Accessories
  12. 12. Lathe Centers <ul><li>The centers supports the work while the cutting operations are performed. </li></ul>Lathe Center Tail stock
  13. 13. Types of Lathe Centers Revolving dead center Changeable point dead center Long point center 60° lathe center
  14. 14. Lathe Chucks <ul><li>Lathe chucks are used extensively for holding work for machining operations. </li></ul>
  15. 15. Types of Lathe Chucks Three-jaw universal chuck Four-jaw independent chuck Magnetic chuck Used to hold round, square, hexagonal, and irregularly shaped work pieces. Holds round and hexagonal work Faceplates Used to hold work that is too large or such shape cannot be held in a chuck.
  16. 16. Steady Rest <ul><li>A steady rest is used to support a long or slender work piece during machining. </li></ul>
  17. 17. Lathe Dogs <ul><li>A lathe dog is used when work is machined between centers. </li></ul><ul><li>The tail of the lathe dog fits into a slot on the face plate and provides the drive to the work piece. </li></ul>Standard bent-tail Straight tail
  18. 18. Lathe Dogs
  19. 19. Cutting-Tool-Holding Devices <ul><li>There are many types of cutting tools for different operations. </li></ul>Handle fits in the tool post

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