Drills and Drill Press Safety in the Lab

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Drills and Drill Press Safety in the Lab
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Traditional Hand Drills
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Inside a Hand Drill
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Corded Drills

• Electric
• Variable speed
• Forward reverse
• ¼ -3/8 chuck
• Strong and durable

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Cordless Drills

• Battery power
• 3/8 chuck
• Forward reverse
• Quick release chuck
• Torque collar

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Drill Press

• Table or bench top
• Electric
• ½ chuck
• Variable speed
• Depth guage/stop

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Drills and Bits

• HS twist bit
• Spade bit
• Brad point
• Forstner
• Hole saw

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Drill Press Part Identification
1 Variable speed control 2 Power Switch 3
Depth stop 4 Chuck key 5 Chuck 6 Tilt table 7
Belt/pulley cover
8 Motor 9 Head support collar 10 Column 11
Quill feed lever 12 Table locking clamp 13 Base
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Drill Press Safety

• Do not wear loose clothing or jewelry while
  operating a drill press. Confine long hair with
  a tie or hair net.
• Wear industrial quality eye protection while
  drilling.
• Maintain a 4 safety zone.
• Keep work space around the drill press clean.
• Turn off power before making adjustments.
• Drill only with sharp drill bits with shanks that
  are matched to the type of chuck being used.

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Drill Press Safety

• Clear the drill press table of all tools, metal,
  rags, etc. before drilling.
• Secure small work in a drill press vise or with a
  clamp before drilling.
• Keep all guards in place.
• Never hold small pieces by hand while drilling.
• Never attempt to stop a revolving piece of work
  in the drill press by hand.
• Secure bit by tightening the drill chuck. Remove
  the chuck key before the drill press is turned
  on.
• Never allow any part of your body to touch the
  drill bit or any revolving part of the drill
  press while it is in motion.

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Drill Press Basic Operating Procedures

• Adjust drill speed and feed to the type and size
  of hole being drilled. Check drill
  specifications for recommended drill speeds and
  feed.
• Position long stock so it is to the left of the
  drill press operator while being drilled.
• Select proper sized bit by using drill gauge.
• Tighten the drill bit securely in chuck.
• Mark all metal to be drilled with a center punch.

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Drill Press Basic Operating Procedures

• Support the end of long stock with a stand.
• Clamp stock to be drilled in vise. Place a block
  of wood under the metal being drilled to prevent
  the bit from cutting into the vise after coming
  through the work.
• Make certain the chuck key had been removed from
  the chuck before starting the drill press.
• Make sure that guard(s) is/are in place and the
  table locking clamp is tightened securely.
• Use the proper cutting lubricant for the material
  being drilled.

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Drill Press Basic Operating Procedures

• Set the drill speed to match the material being
  drilled and hole size. Note, variable speed
  drill presses require the machine to be running
  to adjust the operating speed. Standard speeds
  1720-1800 rpms
• Apply pressure to quill feed lever, feed drill
  bit into stock fast enough to keep drill bit
  cutting at all times. Backtrack to free loose
  chips.
• Just as the bit begins to cut through stock,
  reduce the feed pressure so the bit will not
  seize stock. Seizing causes the material to be
  grabbed by the bit, which will cause the material
  to revolve around the bit or will break the bit.
  If seized, pin the stock to the table using the
  feed lever and shut off power before removing any
  revolving material.

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Drill Press Basic Operating Procedures

• After the hole is drilled release the quill feed
  lever slowly and allow the chuck to return to the
  starting position. Turn off power.
• When work is removed from the vise be careful,
  the underside of the hole may have sharp ends.
• Remove drill bit, return it to proper storage
  place and clean your area.
• When drilling long stock put work on the drill
  press table, long end to the left of the drill
  press operator.
• When drilling round stock use a V-shaped drill
  block to support and hold the material.

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SELF TEST 1 11 2
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