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Wt4603 unit8 week11

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The Lathe

The Lathe


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  • 1. WT4603Wood Processing Safety &PracticeAutumn 2011Lecture Unit 8 (Week 11)  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. WT4603 Wood Turning Lathe • Purpose • Types of lathe  Stand alone  Bench mounted  Tools • Anatomy • Operational Procedures • Mechanics • Health & Safety • Type of work • Tools • Example of primary work Department of Manufacturing & Operations Engineering
  • 3. WT4603 Wood Turning Lathe• The art or process of shaping wood into forms on a lathe. www.irishwoodturnersguild.com Department of Manufacturing & Operations Engineering
  • 4. WT4603 Stand Alone Lathe Primary Wood Turning Tools Bench Mounted Lathe Department of Manufacturing & Operations Engineering
  • 5. 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 Department of Manufacturing & Operations Engineering
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  • 12. WT4603 Operational Procedures• 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. Department of Manufacturing & Operations Engineering
  • 13. WT4603 Lathe Speed • Ø x RPM = Lathe Speed • Normally this is outlined on the machine information panel along with belt adjustment settings Department of Manufacturing & Operations Engineering
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  • 15. WT4603 Wood Turning Lathe 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 Risk Assessment Department of Manufacturing & Operations Engineering
  • 16. WT4603 SEVERITY 1. ENTANGLEMENT Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 17. WT4603 SEVERITY 2. VIOLENT EJECTION Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 18. WT4603 SEVERITY 3. PIECE SPINNING Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 19. WT4603 SEVERITY 4. ELECTRIC SHOCK Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 20. WT4603 SEVERITY 5. CUTS Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 21. WT4603 6. INADVERTENT SEVERITY STARTING Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 22. WT4603 SEVERITY 7. PINCH POINT Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 23. WT4603 8. MOVING TOOL SEVERITY REST Slightly Moderately Quite Very Extremely Harmful Harmful Harmful Harmful Harmful Highly Trivial Tolerable Tolerable Moderate Moderate Unlikely LIKELIHOOD Quiet Tolerable Tolerable Moderate Moderate Substantial Unlikely Likely Tolerable Moderate Moderate Substantial Substantial Quite Moderate Moderate Substantial Substantial Intolerable Likely Highly Moderate Substantial Substantial Intolerable Intolerable Likely Department of Manufacturing & Operations Engineering
  • 24. WT4603 RISK ASSESSMENTLocation: SR2-047 Date: 24-09-2010 Assessment Carried out by: Mr. Joe LysterAssessment 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 Lab coats, securing of1. Entanglement Intolerable User of Machine Securing Clothes/Hair long hair and loose Teacher/Students 12-11-2010 garments/Jewellery Headstock/Tail stock Secure work piece 12-11-20102. Violent Ejection Substantial All in Class – material properly, lock Teacher/Students preparation tailstock to bed Clamping/Speed Set 12-11-20103. Piece Spinning Substantial All in Vicinity up RPM/Material size Teacher/Students4. Electric Shock Inspection of Electrical casing intact Teacher/Students 12-11-2010 Moderate User of MachineHazards Equipment for all components Swarf ejection, hand jewellery, tool 12-11-20105. Cuts Substantial User of Machine Training/PPE handing, User PPE i.e. Teacher/Students face shield Flush start, stop cap6. Inadvertent Lockable Isolator Teacher/Students 12-11-2010 Moderate All in Vicinity control system,Starting Switch isolator Mechanical belt adjustment, chuck 12-11-20107. Pinch Point Substantial User of Machine Training removal, tool Teacher/Students handling 12-11-20108. Moving Tool Rest Substantial User of Machine Bed lock handle Bed lock handle Teacher/Students Department of Manufacturing & Operations Engineering
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  • 53. WT4603 Useful Links: http://www.youtube.com/watch?v=k6SRVTBZIxU http://www.woodturningonline.com/Turning/Turning_projects.html http://www.woodturnersresource.com/ http://www.dailymotion.com/video/xbs54h_woodturning-projects- spinning-tops_school Department of Manufacturing & Operations Engineering