Page 717 - ISCAR(TURNING-CATALOG-42-2022)

USER GUIDE

Anvils for Laydown Inserts

The parameter for tilting the threading insert relative to the helix angle of threading is of great importance when threading THREADING
is produced. This parameter ensures proper operation of the insert during threading production in terms of equal load
distribution applied to the insert, equal distribution of forces operating on the insert, development of uniform wear on both
sides of the cutting edge, and avoiding friction of the insert with the side of the threading profile. If the side clearance insert
angles (α) are not equal in relation to the helix angle (φ), the insert must be tilted. This is performed by using anvils.

Recommended Less Recommended
αL=αR αL≠αR

φ φ

β β =0

α R
α R
α L
α L
Quick and easy way to select a correct anvil

Helix (Lead) angle calculation by formula or Helix (Lead) angle area from the graph

Recommendation for an inclination
angle (β°) according to the thread
turning method definition and
dependent on the thread standard

Recommendation for a suitable anvil
according to the insert size and type of
toolholder
(internal or external)

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