Каталог Iscar токарный инструмент 2017 - страница 349

Предыдущая страница Следующая страница

Навигация

Machining Tips

Correct grooving sequence When making a groove where the insert’s width is not a way that the material is always in the center identical to the groove, it is recommended to select an of the insert. This practice will ensure better insert that will enable to groove symmetrically in such chipbreaking and symmetrical cutting forces.

1 2 3

Eliminating a “Hanging Ring” When turning at the end of a bar or towards a recess between two walls, a “hanging ring” may be formed. To eliminate the unwanted “hanging ring”:

3 4

1 2 5

1. Turn toward the recess. Stop a short 2. Pull back the groove-turn 3. Machine as shown. This final

distance before reaching the recess. tool and re-position it. operation achieves the size

and flatness of the side wall.

Internal Machining

Improving Internal Turning in a Blind HoleOptimizing Internal Machining Toolholder Overhang
Internal turning in a blind hole brings about theIt is always recommended to use the minimum possible
problem of chip exit. When the tool reaches the rearoverhang in order to maintain maximum toolholder
side wall, chips may be caught between the wallrigidity. As a general rule, maximum overhang should
and the insert, possibly causing insert breakage.not exceed three times the holder-bar diameter.

Two solutions that can eliminate this problem: First Solution Lmax.≤3D 1. Start by grooving 1 at the rear wall. 2

ØD 2. Continue by turning from the inside toward the outside. L max. Second Solution

Start by grooving at the 1 2 3 4

5 rear wall. Pull the tool back to the outside. Turn the final diameter from outside,

toward the groove.