MDP-15
9. Others
9-1. Drill Well
1) Type of Drill Well
a. V-type Drill Well:
The section of this drill well is 90º V-shape.
This drill well alone can allow for the use of several different sizes of drill bits.
b. U-type Drill Well: The section of this drill well is U-shape.
This can be used only for one size of drill bit. Since the bit height is fixed, ideal helix angle can be obtained.
2) Indication of Drill Well
Example-1 (U-type Drill well for
Φ
0.25 undercut drill)
10
-
U
-
0.25
-
UC
Indicated only for U-type Drill well
・
UC --- for undercut drills
・
ST --- for straight drills
・
For U-type Drill Well--- Size of Drill
・
For V-type Drill Well--- Number of V-type
(See 3) chart below)
・
U--- U-type Drill Well
・
V--- V-type Drill Well
For MDP-10
・
Example-2 (V-type Drill well for
Φ
0.6 drill)
10 -
V
-
2
No. 2 (Size Range
Φ
0.5~
Φ
0.79)
V-type Drill Well
For MDP-10
3) V-type Diameter Size Ranges
Number
Size Range
Indication
1
0.3 ~ 0.49
10-V-1
2
0.5~0.79
10-V-2
3
0.8~1.19
10-V-3
4
1.2~1.69
10-V-4
* There is no distinction between ST and UC for V-type drill well.
UNION TOOL
17
