Wt4603 unit6(wk7) machines_exam

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Wt4603 unit6(wk7) machines_exam

  1. 1. WT4603Wood Processing Safety & PracticeLecture Unit 6 (Week 7 Continued)<br /><ul><li> Practical Machine Exam 2010
  2. 2. Lecturer: Mr. Joseph Lyster
  3. 3. joseph.lyster@ul.ie
  4. 4. Notes prepared by: Mr. Donal Canty, Mr. Des Kelly and Mr. Joseph Lyster
  5. 5. Notes available on www.slideshare.net/WT4603</li></li></ul><li>WT4603<br />Practical Machine Exam Outline:<br />Machines Involved:<br />Planer / Thickenesser / Rip Saw<br /><ul><li>Process the following cutting list from the stock provided.
  6. 6. Note: Stock size is 650mm x 70mm x 50mm Rough Sawn material
  7. 7. All dimensions are in millimetres
  8. 8. Use the surface planning machine, thickenessing machine and rip saw to process the cutting list.
  9. 9. Important points to note:
  10. 10. Surface Planer: Know how to safely and correctly check the fence for square in relation to the in-feed table, set the bridge guard and guides for planing face side and face edge and the correct and safe hand positions when planning.
  11. 11. Thickness Planer: Know the correct starting procedure for this machine and the appropriate depth of cut to take in each pass through the machine.
  12. 12. Rip Saw: Know how to set both the SEDGWICK and JET rip saws for cross cut and rip operations. You must also raise and lower the blade/guard on the JET saw in relation to the material height as it is fed into the saw blade.</li></ul>Department of Manufacturing & Operations Engineering<br />
  13. 13. WT4603<br />Marking Scheme:<br />Department of Manufacturing & Operations Engineering<br />
  14. 14. WT4603<br />Explanation:<br />A score of 85/100 is required to pass the practical machine exam<br />Critical Fail: There are 5 critical fail elements within the marking scheme as follows:<br />Selection and use of appropriate PPE<br />Isolate machine prior to setting fences<br />Correct setting of blade guard and blade exposure<br />Correct and safe procedure when surfacing material (Hand Positions)<br />Correct setting of rip fence for crosscutting<br />Should you fail to demonstrate any of the outlined critical fail elements then your exam will be terminated and you will have failed.<br />Students who score below 85/100 marks or produce a critical fail will be required to repeat the exam at the end of the semester (Week 12/13)<br />Department of Manufacturing & Operations Engineering<br />
  15. 15. WT4603<br />General:<br />PPE Required:<br /><ul><li>Lab Coat
  16. 16. Safety Glasses/Goggles
  17. 17. Additional non-PPE:
  18. 18. Measuring Tape
  19. 19. Pencil
  20. 20. Process Sheet
  21. 21. Cutting List</li></ul>Department of Manufacturing & Operations Engineering<br />
  22. 22. WT4603<br />Planer:<br />2. Isolate Machine prior to setting fences:<br /><ul><li>Visible demonstration of student ability to locate machine isolator and switch to off position.
  23. 23. If the isolator is already in the off position then you should demonstrate this and proceed with task</li></ul>3. Accurate setting of fence to 90˚ to the infeed table<br /><ul><li>Demonstrate the use of the square</li></ul>4. Correct setting of bridge guard and blade exposure<br /><ul><li>Adjust depth of fence in relation to the width of the timber + 10mm
  24. 24. Adjust blade guard to appropriate position
  25. 25. Demonstrate adjustment of the bridge guard to the appropriate position for face side and face edge</li></ul>Department of Manufacturing & Operations Engineering<br />
  26. 26. WT4603<br />5. Correct orientation of material<br /><ul><li>Demonstrate that plank should be fed along its length from the infeed position
  27. 27. Demonstrate processing of face side first</li></ul>6. Correct setting of bridge/blade guard lead in for planing face side and face edge<br /><ul><li>Correct setting of bridge guard handle for face side and face edge</li></ul>7. Correct and safe procedure when surfacing material (hand positions)<br /><ul><li>Hand Movement
  28. 28. Body position
  29. 29. Feed rate</li></ul>Department of Manufacturing & Operations Engineering<br />
  30. 30. WT4603<br />Thicknesser Planer:<br />8. Correct and safe procedure when thicknessing material<br /><ul><li>Demonstrate machine set up
  31. 31. Setting appropriate depth
  32. 32. Correct feed of material</li></ul>Department of Manufacturing & Operations Engineering<br />
  33. 33. WT4603<br />Rip Saw:<br />9. Correct and safe setting of safety guards<br /><ul><li>Demonstrate guard movement and ensure correct positioning processing material</li></ul>10. Correct setting of rip fence for ripping material<br /><ul><li>Demonstrate position of fence beyond saw blade
  34. 34. Demonstrate appropriate adjustment and lock of fence position
  35. 35. Demonstrate setting of rip to be made</li></ul>11. Safe procedure for ripping (hand positions and use of push sticks)<br /><ul><li>Demonstrate hand position relative to material
  36. 36. Demonstrate that hands never enter the machine table are when ripping
  37. 37. Demonstrate appropriate use of push sticks (positions)
  38. 38. Demonstrate appropriate feed and follow through of material</li></ul>Department of Manufacturing & Operations Engineering<br />
  39. 39. WT4603<br />12. Correct setting of rip fence/dog fence for cross cut<br /><ul><li>Demonstrate guard movement and ensure correct positioning processing material</li></ul>13. Correct and safe procedure for cross cutting<br /><ul><li>Demonstrate position of fence before saw blade
  40. 40. Demonstrate appropriate adjustment and locking of fence position
  41. 41. Demonstrate measurement setting on cross cut fence</li></ul>14. Safe removal of waste during machining<br /><ul><li>Demonstrate hand position relative to material
  42. 42. Demonstrate appropriate feed and follow through of material
  43. 43. Demonstrate appropriate use of push sticks (positions) to clear waste</li></ul>15. Return machine to safe settings<br />Department of Manufacturing & Operations Engineering<br />
  44. 44. WT4603<br />Cutting List:<br />Sketch + Dimension<br />B1.1<br />Rail 1<br />Sketch + Dimension<br />Rail 2<br />B2.1<br />Rail 3<br />Rail 3<br />Sketch + Dimension<br />B2.2<br />Sketch + Dimension<br />B2.3<br />Department of Manufacturing & Operations Engineering<br />
  45. 45. WT4603<br />2<br />44<br />50<br />1<br />3<br />18<br />70<br />38<br />20<br />Department of Manufacturing & Operations Engineering<br />
  46. 46. WT4603<br />Processing Procedure:<br />Material Given: 650 x 70 x 50<br />Inspect material<br />Select appropriate face side/ face edge (preliminary marking)<br />Surface plane face side and face edge<br />Thickness (P.A.R) material to 66 x 44<br />Rail 1 Rip 1: 22mm<br />Rail 2/3 Rip 2: 20mm (2 rails produced from one rip)<br />Rail 1 Thickness 1: 20mm<br />Rail 2/3 Thickness 2: 18mm x 2<br />Rail 1 Cross cut A: 630mm x 1<br />Rail 2 Cross cut B: 300mm x 2<br />Rail 3 Cross cut D: 150mm x 2<br />Rail 3 Cross cut C: 310mm x 1 <br />2<br />1<br />3<br />Department of Manufacturing & Operations Engineering<br />
  47. 47. WT4603<br />VIDEO WILL BE UPLOADED TO<br />www.slideshare.net/WT4603<br />BY <br />TOMORROW EVENING <br />21-10-2010<br />Department of Manufacturing & Operations Engineering<br />

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