1 / 68

Subpart O Machine Guarding

Subpart O Machine Guarding. Subpart O. 1910.211 Definitions 1910.212 General Requirements for all Machines 1910.213 Woodworking Machinery 1910.215 Abrasive Wheel Machinery 1910.216 Mills and Calendars 1910.217 Mechanical Power Presses 1910.218 Forging Machinery

bernad
Download Presentation

Subpart O Machine Guarding

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Subpart OMachine Guarding

  2. Subpart O • 1910.211 Definitions • 1910.212 General Requirements for all Machines • 1910.213 Woodworking Machinery • 1910.215 Abrasive Wheel Machinery • 1910.216 Mills and Calendars • 1910.217 Mechanical Power Presses • 1910.218 Forging Machinery • 1910.219 Mechanical Power-Transmission

  3. Basics of machine safeguarding A good rule to remember is: • Any machine part; function; or process which may cause injury must be safeguarded.

  4. Basic areas of safeguarding • The point of operation • Power transmission apparatus • Other moving parts (reciprocating, transverse, or rotating)

  5. Motions • Rotating (including in-running nip points) • Reciprocating • Transverse

  6. Nip points Nip point Nip point Nip point Nip point Nip point

  7. In running nip points on rolls

  8. Nip points A Typical nip points Nip point Nip point B C Nip point

  9. Rotating hazards Burr Rotating shaft and pulleys with projecting key and set screw Rotating pulley with spokes and projecting burr on face of pulley Rotating coupling with projecting bolt heads

  10. Pinch points caused by tables Table Bed (stationary)

  11. Guarding table pinch points

  12. Transverse motion of a belt Transverse motion of belt

  13. Safeguarding Guards • Prevent access to the danger areas Devices • Control access to the point of operation

  14. Actions • Cutting • Punching • Shearing • Bending

  15. Different actions Stock Cutting tool

  16. Guards • Fixed • Interlocked • Adjustable • Self-adjusting

  17. Fixed guard on a bandsaw Wheel guard Blade guard Wheel guard

  18. Fixed guard on a power press Stock entering danger zone Stock exit Transparent insert in front panel

  19. Fixed guard enclosing belt and pulleys Inspection panel

  20. Fixed guard on veneer clipping Guard

  21. Fixed guard on a power squaring shear Blade guard Throat and gap guard

  22. Ends and unused portion of press brake guarded End of the guarded Transparent guard Mounting bolt Power press brake (When used in a power press) The requirements of 4123:1-5-10 Shall be applicable to power press brakes when used for other than bending operations

  23. Adjustable guard on horizontal bandsaw Adjustment knob Guard Blade

  24. Adjustable guard on power press Adjustable bars

  25. Pedestal grinder Point of operation Rotating wheels Stock Adjustable stock rest Operating control (on/off switch) Note: Grinding wheels are usually enclosed as shown. Base

  26. Portable grinders

  27. Adjustable guard on bandsaw

  28. Adjustable guard on table saw Crank for height adjustment Handle for extending or retracting guard over blade Saw blade Guard

  29. Adjustable guard on wood shaper Nut for height adjustment Guard Base of shaper blade

  30. Adjustable guard on router Adjustment nuts Guard Stock Base of router blade

  31. Self-adjusting guard on radial arm saw Handle Guard Anti-kickback device Blade

  32. Self-adjusting guard on circular saw Guard retracted Stock Blade Guard

  33. Self-adjusting guard table saw First guard Second guard

  34. Self-adjusting guard on jointer Guard in rest position Guard Stock

  35. Awareness barrier on back side of shear Awareness barrier

  36. Awareness barrier on stitching machine Awareness barrier

  37. Shields on a drill press and lathe Transparent shield Lathe Drill

  38. Devices • Presence sensing • Photo-electrical • Radio-frequency • Electromechanical • Pullback • Restraint

  39. Photoelectric presence sensing devices Sensing device Danger area Sensing device

  40. Photoelectricpresence sensing devices cont:

  41. Photoelectric presence sensing device on press brake

  42. Radio-frequency presence sensing device on press Antenna Capacitance field

  43. Electromechanical sensing device on an eye-letter Probe in contact with fingers, machine will not cycle Rocker-arm welder Air-operated welder Similar safety devices are utilized on: spot welders and riveters

  44. Pullback device on A power press Pullback mechanism Danger area Wristband

  45. Pullback device on A press brake Nylon pullback straps are attached to wristbands

  46. Restraint device on A power press

  47. Devices • Safety controls • Safety trip control • Pressure-sensitive body bar • Safety triprod • Safety tripwire cable • Two-hand control • Two-hand trip

  48. Pressure-sensitive body bar on rubber mill Bar

  49. Safety triprod on a rubber mill

  50. Safety tripwire cable on A calender Cable

More Related