Note: This lip and groove pulls the collet from the spindle when the collet nut is removed.
2. Place the collet nut and collet into the collet chuck and finger tighten the collet nut onto the collet chuck.
3. Insert the bit into the collet, place a hex wrench through the hole in the spindle, and tighten the collet with a 22mm wrench (see Figure 25).
To remove a bit from the collet chuck, do these steps:
1. Protect the table surface with a piece of cardboard or hold the cutter or tool with a shop towel to pre- vent it from falling out of the collet.
2. Place a hex wrench through the hole in the spindle and loosen the collet nut with a 22mm wrench until the bit is free.
Note: Remove the collet chuck in the same manner as removing the drill chuck.
-20-
The collet chuck (an optional accessory) for the micro mill offers increased precision and rigidity compared to the drill chuck. Each collet will only fit tooling with a specific shaft diameter. This collet set includes 1⁄4", 3⁄16", 5⁄32", 5⁄64", 3⁄64" collets.
To install the collet chuck, do these steps:
1.UNPLUG THE MICRO MILL!
2.Remove the drill chuck and clean the arbor and collet chuck tapers with denatured alcohol.
3.Push the collet chuck onto the arbor.
4.Place a piece of wood on the compound slide table and use the downfeed lever to firmly press the collet chuck against the piece of wood (see Figure 23) to seat the collet chuck on the arbor.
To install the collet in the collet chuck, do these steps:
1.Place the grooved end of the collet into the collet nut until the off-center lip of the collet nut snaps into the collet groove. See Figure 24.
Figure 23. Installing the collet chuck.
Off-Center Collet Lip
and Collet Groove
Figure 24. Collet and collet nut lip.
Figure 25. Installing a collet.