Обший каталог Yamawa 2016 - 2017 - страница 684

POINT DRILLS

Product features

●High rigidity design of the drills enables high speed cutting.

• High helix design enables high accuracy of surface finishing due to excellent cutting performance.

Point angle:125°, Chamfering angle：90°（60°） By using two types of angles, centering process and chamfering process are obtained at the same time.

●Different from normal center drills, because of no drill portion, there is no breakage trouble of drill portion.

• Two processes, centering and chamfering, are obtained at the same time. Point drills are also used for other processes such as fluting.
• The figures of drill end are two stepped flat type. This type enables excellent chamfering, and high precision cutting becomes possible.

Examples of usage

Centering Chamfering Beveling Fluting

Cutting processes

Point drills Drilling Tapping

Centering process

and chamfering

process are obtained

at the same time.

Test of continuous centering

1120 holes