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Methods of holding work piece


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Methods of holding work piece

  1. 1. Machining processes<br />First year<br />Production Engineering Department<br />Methods Of Holding WorkPiece<br />Eslam Bahaa Saleh<br />Faculty Of Engineering, Alex Univ.<br />1<br />
  2. 2. WP Clamping Method:<br />Holding a W.P To an engine lathe depends mainly upon the geometrical features of the WP.<br />2<br />
  3. 3. Holding Hollow Cylindrical WP:<br />Cylindrical W.Ps Have a certain holding methods to the engine lathe but first we need to know if the WP is Hollow or Solid.<br />Hollow Cylindrical W.Ps are either Tapered or Straight.<br />3<br />Cylindrical W.PS>Hollow> Tapered<br />Cylindrical W.PS>Hollow> Straight<br /><ul><li>We use a Tapered Mandrel.
  4. 4. The Mandrel is pushed inside the WP till it is fixed.
  5. 5. We use a Straight Mandrel.
  6. 6. We fix the W.P to the mandrel using a screw and nut.</li></ul> Tapered Mandrel<br /> Straight Mandrel<br />
  7. 7. WP Clamping Method:<br />4<br />
  8. 8. Holding Solid Cylindrical WP:<br />Solid Cylindrical W.Ps are either Shortor Long.<br />5<br />Cylindrical W.PS>Solid> Short<br />Cylindrical W.PS>Solid> Long<br /><ul><li>We Hold it using the 3-Jaw Chuck or using Collets.
  9. 9. We Hold it using “Between Centers” Method.</li></ul> 3-Jaw Chuck <br /> “Between Centers” Method.<br /> Collets<br />
  10. 10. WP Clamping Method:<br />6<br />
  11. 11. Holding Non-Cylindrical WP:<br />Non-Cylindrical W.Ps Have a certain holding methods to the engine lathe but first we need to know if the WP is Regular Shapeor Irregular Shape.<br />Regular shapes are either Short or Long.<br />7<br />Regular Shape>Long<br />Regular Shape>Short<br /><ul><li>We use the 4-Jaw Chuck.
  12. 12. We use a face plate.
  13. 13. We use it for any W.P with long regular shape ex: triangle or squared WPs.</li></ul>4-Jaw Chuck<br />
  14. 14. WP Clamping Method:<br />8<br />
  15. 15. Holding Irregular Shaped W.Ps<br />Irregular Shaped W.Ps are such as perpendicular-Pipes and V-Pipes.<br />9<br /> Non-Cylindrical WPs>Irregular Shapes <br /><ul><li>Irregular Shaped WPs cannot be clamped in a chuck and are, therefore, mounted on a plate fixture that is attached to faceplate while using a counterweight.</li></li></ul><li>WP Clamping Method:<br />10<br />
  16. 16. WP Clamping Method:<br />11<br />Thank You!<br />Eslam Bahaa Abd-Aziz Saleh<br />Production Engineering<br />1st Year<br />