Gap or Overlap

UT tolerance （ø0.3mm）: 0.005mm or less

Hole Qualities

*The drill point forms a line and not a point, this worsens registration accuracy. However, this defect does not usually affect hole quality.

Countermeasure (Setting of drill point)

1.Adjust pointing wheel

Gap: Move the secondary wheel back. (or bring the primary wheel forward.)
Overlap: Bring the secondary wheel forward. (or move the primary wheel back.)

2.Tighten fixture screws

・Mortar housing micrometer screws
・Universal attachment fixture screws
・Table micrometer fixture screws

3.Use suitable drill well for drill specification and diameter.

List of drill well

V-type

4.Adjust the amount of drill protrusion from drill well.

*Ideal amount extending from the drill well is usually very small, however when re-pointing UC type drills, make sure that the entire head protrudes from the drill well.
(As it the margin part maybe chipped, avoid using this part to rest the drill in the drill well.)

5.Adjust the universal joint (Correcting runout)