Boring Head

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Purpose
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 center-lines in certain instances.



Location
Cabinet #10 on the right side of the drawer where the extra collets are (in the small metal box).

Tips
Adjustments for cutting depth are on a diameter basis. For a smooth finish remove 0.002 inches on the final pass. Use cutting oil to cool and lubricate tool.

Safety
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.

Operation
1.Install head into mill. 2.Install boring bar and tighten set screw. 3.Loosen lock screw and adjust boring bar to hole edge. 4.Dial for a cut (0.005 to 0.030 inches), tighten lock using small end to prevent over torque. 5.Adjust mill speed for hole size and material (when mill is running). 6.Engage worm feed on mill (mill should be on by now). 7.Push or pull Knob 3 to engage worm feed in reverse (knob 3 has 3 positions; IN is FORWARD, MIDDLE is NEUTRAL, and OUT is REVERSE). 8.Bring quill to material (reduces amount of time to wait for feed). 9.Pull handle out to engage power feed. 10.When at desired depth push handle back to disengage feed, then turn off mill. 11.Remove head from hole (backing off tool from sie). 12.Repeat above until hole is desired size. 13.Remove bar from head. Clean and replace in box. 14.Remove head from mill. Clean and replace in box. 15.Make sure Allen wrench is in the box and put it in the cabinet. 16.Disengage worm gear when done.