Каталог Iscar державки и пластины для нарезания резьбы 2022 - страница 85

THREADING USER GUIDE Anvil selection for symmetric threading profiles The table below defines the recommended insert inclination angle (β) and anvil selection according to the helix angle (φ) for single-start threading and the lead angle (φL) for multi-start threading, depending on the threading turning method for machining the following symmetric threading profiles: • partial profile threading with an angle profile of 60°, 55° only • full profile threading according to ISO, UN, Whitworth, NPT, BSPT, Trapeze, ACME, RD standards only Thread turning method Production of right-hand threading Production of left-hand threading with right-hand holder with left-hand holder LH or LH RH RH Anvil selection Positive Anvils Threading helix (lead)angle φ (φL) φ (φL)≥ 5º 4º≤φ (φL)<5º 3º<φ (φL)≤4º 2º<φ (φL)≤3º 1º<φ (φL)≤2º 0º<φ(φL)≤1º Inclination Angle β 4.5º 3.5º 2.5º 1.5º (std) 0.5º IC Toolholder Anvil Designation 16 EX RH OR IN LH AE 16+4.5 AE 16+3.5 AE 16+2.5 * AE 16+1.5 AE 16+0.5 (3/8) EX RH OR IN LH AI 16+4.5 AI 16-3.5 AI 16+2.5 * AI 16+1.5 AI 16+0.5 22 EX RH OR IN LH AE 22+4.5 AE 22+3.5 AE 22+2.5 * AE 22+1.5 AE 22+0.5 (1/2) EX RH OR IN LH AI 22+4.5 AI 22+3.5 AI 22+2.5 * AI 22+1.5 AI 22+0.5 27(5/8) EX RH OR IN LHEX RH OR IN LH special solution AE 27-4.5AI 27+4.5 AE 27+3.5AI 27+3.5 AE 27+2.5 * AE 27+1.5 AE 27+0.5AI 27+2.5* AI 27+1.5AI 27+0.5 22U EX RH OR IN LH AE 22U+4.5 AE 22U+3.5 AE 22U+2.5 * AE 22U+1.5 AE 22U+0.5 (1/2U) EX RH OR IN LH AI 22U+4.5 AI 22U+3.5 AI 22U+2.5 * AI 22U+1.5 AI 22U+0.5 27U EX RH OR IN LH AE 27U+4.5 AE 27U+3.5 AE 27U+2.5 * AE 27U+1.5 AE 27U+0.5 (5/8U) EX RH OR IN LH AI 27U+4.5 AI 27U+3.5 AI 27U+2.5 * AI 27U+1.5 AI 27U+0.5 * Standard anvil supplied with tool Positive Anvils Feed Towards the Chuck +φ (φL) +β 1.5° const. 719