Каталог Iscar державки и пластины для нарезания резьбы 2022 - страница 81

THREADING 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 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 αL αR αL αR 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) 715