Wt4603 unit9 week10

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Week 10 Lecture - Lathe/Exam Technique

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Wt4603 unit9 week10

  1. 1. WT4603 Wood Processing Safety & Practice Lecture Unit 9  The Lathe & Exam Revision  Lecturer: Mr. Joseph Lyster  joseph.lyster@ul.ie  Notes prepared by: Mr. Joseph Lyster  Notes available on www.slideshare.net/WT4603
  2. 2. Department of Manufacturing & Operations Engineering WT4603 Wood Turning Lathe • Purpose • Types of lather • Stand alone • Bench mounted • Tools • Anatomy • Operational Procedures • Mechanics • Health & Safety • Type of work • Tools • Example of primary work
  3. 3. Department of Manufacturing & Operations Engineering WT4603 Wood Turning Lathe www.irishwoodturnersguild.com • The art or process of shaping wood into forms on a lathe.
  4. 4. Department of Manufacturing & Operations Engineering WT4603 Stand Alone Lathe Bench Mounted Lathe Primary Wood Turning Tools
  5. 5. Department of Manufacturing & Operations Engineering WT4603 Wood Lathe Anatomy • Start/Stop Control • Headstock • Tailstock • Bed • Tool Rest • Tailstock Hand Wheel • Tailstock Spindle • Spindle Lock • Faceplate • Variable Speed Control • Locking Lever
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  12. 12. Department of Manufacturing & Operations Engineering WT4603 • Wear safety goggles or face shield to protect yourself from flying chips. • Wear hearing protection that is suitable for the level and frequency of the noise you are exposed to in the woodworking area. • Wear a dusk mask when dust is generated (e.g., during sanding operations). • Work in well-lighted area. • Before the lathe is turned on, ensure that all clamps and fittings are secure and that the work piece is free to turn. • Use stock free of defects. • Hold tools firmly with both hands and against the tool rest. • Hold the stock securely on the faceplate or between the centres. • Use only furnished or approved tools. • Use sharp, well-maintained chisels and gouges. • Select a speed that is appropriate for the job. Operate the lathe at a low speed and use a moderate cut depth to prevent splinters from flying out during roughing operations. The actual speed of the lathe depends on type of wood, a diameter of stock, nature of work being done and type of tool used. • Adjust tool rests so that they are parallel and as close as possible to the stock. They should also be set high enough so that tools will cut into the wood slightly above the centre of the work being turned. • Remove the tool rest when sanding or polishing. • Use appropriate tools to hold the sand paper or emery paper whenever possible. Examples include a 'nut cracker' or the paper fixed to a piece of flat wood. If you must use your hands always hold the paper in a way that will allow the paper to catch, pull or entangle around the stock. • To make a faceplate turning, the one hand steadies the tip of the chisel, which holds the edge against the tool rest while the other hand guides the tool. Keep the tip of the chisel held higher than the handle. Operational Procedures
  13. 13. Department of Manufacturing & Operations Engineering WT4603 • Ø x RPM = Lathe Speed • Normally this is outlined on the machine information panel along with belt adjustment settings Lathe Speed
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  15. 15. Department of Manufacturing & Operations Engineering WT4603 Hazards Risk Control Measures 1 Entanglement Lab coats, securing of long hair and loose garments/Jewellery 2 Violent Ejection Secure work piece properly, lock tailstock to bed 3 Piece Spinning RPM/Material size 4 Electric Shock Ensure electrical casing intact for all components 5 Cuts Swarf ejection, hand jewellery 6 Inadvertent Starting Flush start, stop cap control system, isolator 7 Pinch Point Mechanical belt adjustment 8 Moving Tool Rest Lock/clamp handle Wood Turning Lathe Risk Assessment
  16. 16. Department of Manufacturing & Operations Engineering WT4603 1. ENTANGLEMENT SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  17. 17. Department of Manufacturing & Operations Engineering WT4603 2. VIOLENT EJECTION SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  18. 18. Department of Manufacturing & Operations Engineering WT4603 3. PIECE SPINNING SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  19. 19. Department of Manufacturing & Operations Engineering WT4603 4. ELECTRIC SHOCK SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  20. 20. Department of Manufacturing & Operations Engineering WT4603 5. CUTS SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  21. 21. Department of Manufacturing & Operations Engineering WT4603 6. INADVERTENT STARTING SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  22. 22. Department of Manufacturing & Operations Engineering WT4603 7. PINCH POINT SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  23. 23. Department of Manufacturing & Operations Engineering WT4603 8. MOVING TOOL REST SEVERITY Slightly Harmful Moderately Harmful Quite Harmful Very Harmful Extremely Harmful LIKELIHOOD Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial Likely Tolerable Moderate Moderate Substantial Substantial Quite Likely Moderate Moderate Substantial Substantial Intolerable Highly Likely Moderate Substantial Substantial Intolerable Intolerable
  24. 24. Department of Manufacturing & Operations Engineering WT4603 RISK ASSESSMENT Location: SR2-047 Date: 24-09-2010 Assessment Carried out by: Mr. Joe Lyster Assessment of: WOOD TURNING LATHE CE Marking (Machines): Yes □̷ No □ Page 1 of 1 Assessment Review Date: 12-11-2010 HAZARD RISK MAGNITUDE PERSONS AT RISK EXISTING CONTROLS REQUIRED CONTROLS PERSONS RESPONSIBLE TARGET DATE 1. Entanglement Intolerable User of Machine Securing Clothes/Hair Lab coats, securing of long hair and loose garments/Jewellery Teacher/Students 12-11-2010 2. Violent Ejection Substantial All in Class Headstock/Tail stock – material preparation Secure work piece properly, lock tailstock to bed Teacher/Students 12-11-2010 3. Piece Spinning Substantial All in Vicinity Clamping/Speed Set up RPM/Material size Teacher/Students 12-11-2010 4. Electric Shock Hazards Moderate User of Machine Inspection of Equipment Electrical casing intact for all components Teacher/Students 12-11-2010 5. Cuts Substantial User of Machine Training/PPE Swarf ejection, hand jewellery, tool handing, User PPE i.e. face shield Teacher/Students 12-11-2010 6. Inadvertent Starting Moderate All in Vicinity Lockable Isolator Switch Flush start, stop cap control system, isolator Teacher/Students 12-11-2010 7. Pinch Point Substantial User of Machine Training Mechanical belt adjustment, chuck removal, tool handling Teacher/Students 12-11-2010 8. Moving Tool Rest Substantial User of Machine Bed lock handle Bed lock handle Teacher/Students 12-11-2010
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  53. 53. Department of Manufacturing & Operations Engineering WT4603 Exam Techniques: • Question Types • Marking Scheme • Response types –Bullet points • Notes • Sketches + Annotations • Colour • Rough work
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