Каталог Iscar державки и пластины для нарезания резьбы 2022 - страница 87

THREADING USER GUIDE Anvil selection for ABUT threading standard only The table below defines the recommended insert inclination angle (β) and anvil selection according to helix angle (φ) for single-start threading and according to lead angle (φL) for multi-start threading, depending on the threading turning method for machining asymmetric threading profile according to ABUT threading standard only. Threading turning method Production of right-hand threading Production of left-hand threading with right-hand holder with left-hand holder LH RH or LH RH Anvil selection Positive Anvils Negative Anvils Threading helix (lead) angle φ (φL) φ (φL)>3.5° 3°<φ (φL)≤3.5° 2°<φ (φL)≤3° 1°<φ (φL)≤2° 0°<φ (φL)≤1° Inclination angle β 1.5° (std) 0.5 -0.5° -1.5° lC Toolholder Anvil designation 16 EX RH OR IN LH * AE 16 +1.5 AE 16 +0.5 AE 16 -0.5 AE 16 -1.5 (3/8) EX LH OR IN RH * AI16 +1.5 AI16 +0.5 AI 16 -0.5 AI 16 -1.5 22 EX RH OR IN LH * AE 22 +1.5 AE 22 +0.5 AE 22 -0.5 AE 22 -1.5 (1/2) EX LH OR IN RH * AI 22 +1.5 AI 22 +0.5 AI 22 -0.5 AI 22 -1.5 27(5/8) EX RH OR IN LHEX LH OR IN RH special solution * AE 27 +1.5* AI 27 +1.5AE 27 +0.5AI 27 +0.5 AE 27 -0.5AI 27 -0.5 AE 27 -1.5AI 27 -1.5 22U EX RH OR IN LH * AE 22U +1.5 AE 22U +0.5 AE 22U -0.5 AE 22U -1.5 (1/2U) EX LH OR IN RH * AI 22U +1.5 AI 22U +0.5 AI 22U -0.5 AI 22U -1.5 27U EX RH OR IN LH * AE 27U +1.5 AE 27U +0.5 AE 27U -0.5 AE 27U -1.5 (5/8U) EX LH OR IN RH * AI 27U +1.5 AI 27U +0.5 AI 27U -0.5 AI 27U -1.5 * Standard anvil supplied with tool • EX - Anvil for external threading • IN - Anvil for internal threading Positive Anvils Negative Anvils Feed Towards the Chuck Feed Towards the Tailstock +φ (φL) +β -φ (φL) −β° 1.5° 1.5° const. const. 721