Boring Head

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Boring heads are used to create large diameter holes when tolerances do not allow for a drill bit or do not have a large enough drill bit or reamer. A boring head can also be used to enlarge holes, or adjust hole centerlines in certain instances.

Example of Boring Head
Example of Boring Bar Tool

Tips[edit | edit source]

For a smooth finish remove 0.002 inches on the final pass. Use cutting oil to cool and lubricate tool.

Safety[edit | edit source]

Be sure all set screws are tight before operation. Be sure boring bar has a clearance to fit into hole when boring. Remove Allen wrench before turning the mill on. Double check mill speed before operation.

Installation Procedure[edit | edit source]

QR code to access boring bar web page
Tool/Step Description
Step 1:Locate tools
  • Boring head located in cabinet number six
  • Choose desired boring tool from the toolbox
Step 2: Install head into mill, Step 3: Implement Cut, Step 4:Tear Down
Installation
Install Bore Head
Install boring bar and tighten set screw and then Loosen lock screw and adjust boring bar to hole edge. NOTE: set screw tightens boring bar tool, adjustable screw moves tool in lateral direction, and lock screw stops lateral movement.
Implementation
Dial in
Dial for a cut (0.005 to 0.030 inches), tighten lock using small end to prevent over torque.
Adjust Speed
Adjust mill speed for hole size and material (when mill is running).
Go to desired depth
Engage worm feed on mill (mill should be on by now). Bring quill to material (reduces amount of time to wait for feed). Pull handle out to engage power feed. When at desired depth push handle back to disengage feed, and then turn off mill. Remove head from hole (backing off tool from side). Repeat above until hole is desired size.
Tear Down
Remove bar from head
Clean and replace in box
Remove head from mill.
Clean and replace in box
Put Allen wrench away
make sure all tools go back to appropriate locations
Disengage worm gear when done
clean your entire area before leaving the shop