Machine Shop Safety And Practice 2006

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  • 1. Machine Shop Safety and Practice Robin Coope May 10 2006 UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Machine Shop Qualifications • Users with the 10 hour course can only work under supervision of the shop manager Ernest Diamante or a qualified Physics 253 Instructor. This does NOT extend past the end of Physics 253. • Users with the 40 hour course must work with at least one other person in the shop • There is a maximum of ten people in shop. A Qualified Physics 253 Instructor! UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 1
  • 2. Machine Shop Safety • Safety first! Call 911 for emergency and report all injuries to Long Hair shop supervisor. • Safety glasses must be worn in shop. • No bare feet, sandals, slippers or open toe shoes are permitted. • Minimum foot protection of sneakers and socks is required. • Tie up/secure long hair and remove rings, bracelets etc... Bad Hair Do not wear loose fitting clothing. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Machine Shop Safety • Keep your work area free and clear of excessive chips and clutter. • Be careful when using compressed air hoses. Do not blow chips/ debris towards yourself or others. • Never touch chips or rotating tooling with your bare hands or fingers when a machine is running. • Never leave chuck key or wrenches unattended in machines. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 2
  • 3. Machine Shop Safety • Keep the shop doors closed after hours or when supervisor is not present. Do not leave any unauthorized people in the shop. No key, no admittance. • Sign out all tools removed from the shop. Write your name, phone number and room number. Return tools promptly. • If unsure, ask for assistance. • Report damage to tools and machines to the shop supervisor. After hours, leave a note. • Clean up! Dust pans brushes and booms are provided UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Machine Shop Organization • All tools live in specified locations for easy retrieval. • This makes cleanup much easier: just put things back in the proper drawer. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 3
  • 4. Key Hazards • Cutting Fingers on Sharp Tools • Minor burns from hot parts or chips UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Key Hazards One worker one machine!!! UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 4
  • 5. Tools: Sheet Metal Sheer Bender (brake) • Different band saws for steel and Aluminum • Blade quality is important for safety UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory More About Band Saws • Lubricate blade with wax block • Fences and Tees do not work very well with sheet stock – cut freehand • Use wood push block to feed work on the band saw. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 5
  • 6. More About Band Saws • Clamp round parts in an upside down vise. • Cut steel rod with a hacksaw! UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Tools: Milling Machine • Particularly useful for accurate layouts • Can mill and drill UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 6
  • 7. Tools: Milling Machine UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Tools: Milling Machine UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 7
  • 8. Tools: Lathe UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Tools: Lathe UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 8
  • 9. Tools: Lathe UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Tools: Lathe • Lathes are more dangerous than mills as the spinning parts are larger and heavier. • The SMS lathes are relatively small though. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 9
  • 10. Tools: Sander/Grinder • Useful for quick material removal on outside surfaces • Parts heat up very quickly and can burn • Use a water bath to cool the part, then dry machine after use. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Tools: Sander/Grinder Grinder for tool steel only!!!!!! No Aluminum !!!!!!!! The scotch wheel is your finishing friend. Can semi-polish and deburr rapidly and safely Much safer than a polishing wheel UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 10
  • 11. Tools: Drill Press Careful changing speeds on drills and lathes UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Tools: Drill Press • Properly clamp all work in vise on drill presses when ever possible. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 11
  • 12. Tools: Drill Press What is wrong with this picture? UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Tools: Drill Press and Milling Machine Always use specially modified drills when drilling brass or plastic. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 12
  • 13. Hand Working • Often faster than machines • Many different shapes of files are available • Use a file card UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory Remember Your three priorities in a machine shop are safety, accuracy and speed. Never sacrifice safety. UBC Department of Physics and Astronomy / UBC Engineering Physics Applied Biophysics Laboratory 13