Sharp RD-1230 Operation Manual page 42

The way to use the releasing taper handle head and clamping head follows as:
（only applicable for TPR-1600H /TPR-2000H）
To dismantle as follows：
Step 1. Stand at the left side
of the machine.
Step 4. Keep grasping the drilling bit using left hand and rotate the feeding
Assemble the drill bit head and the drill bit clamp as the following:
a. Move away the drilling bit or lift the gearbox to the utmost point.
b. Power off.
c. Put on gloves.
d. Insert a thick wood plate into the underneath of the drill bit and the drill bit clamp.
e. Rotate the feed trip lever clockwise and have the spindle descend about
150 to 200 mm. As fig. a.
f. Rotate the revolving shaft from the bushing till that thing behind the machine is visible from the
hole of releasing drill bit, as fig. b.
g. Place the drill bit clamp end up, as fig. d.
h. Place the drill bit and its clamp end into the revolving shaft and have the drill shaft end inserted
into the hole for releasing the drill bit, as fig. b.
i. Rotate the feed trip lever counter clockwise. Make the spindle descend till the drill bit and the
bottom end of the drill bit clamp head contact the wood plate. Apply a little bit force and complete
it by confirming that the drill bit won't fall.
Precaution：
The distance between the thick wood plate, drill bit and the end of the drill bit clamp is about 30
mm.
Step 2 Grasp the feeding lever
using right hand and
release the spindle to its
utmost position.
lever counter clockwise until the bit comes out.
1 The lever for releasing the drilling bit.
2 The feeding lever
3 The spindle
Step 3. Press down the bit
5-12
releasing lever using left
hand.