Общий каталог Sumitomo 2019 - 2020 - страница 169

Precautions when Using Wiper Inserts Effects of the wiper insert Wiper inserts are effective for external/internal diameter machining and for facing as shown in the figure below, surface roughness of the machined surface can be maintained even in high-feed machining. ■ Effective Range of Wiper Inserts ■ Machined Surface Roughness (actual measurements) Cutting Conditions: CNMG120408, vc=200m/min, ap=1.0mm, SCM435 External Diameter (effective) Insert 25 Corners Wiper Insert (SEW Type) Ordinary ISO Insert (ineffective) Surface Roughness Rz (µm) 20 Taper (ineffective) Improved B Face (effective) 15 surface Internal diameter (effective) roughness 10 5 * Note that wiper inserts leave the same machined surface roughness as normal inserts at tapers and corners. Neg. 0 * The cutting edge position may need to be offset depending 0.1 0.2 0.3 0.4 0.5 0.6 0.7 on the insert shape. See the offset table below. Feed Rate f (mm/rev) Coated Carbide / Coated Cermet / Cermet Pos. CNMG/WNMG/CCMT/CPMT Type LUW / GUW / SEW Type Chipbreaker (LUW Type chipbreaker only for CCMT / CPMT Type) · Use a holder with a cutting edge angle of 95°. Cutting Cutting · No tool compensation required. edge edge angle angle  CNMG / WNMG / CCMT / CPMT type wiper inserts comply with the ISO 95° 75° standard, allowing use without correcting the machining program. C · The obtuse (100°) corner on the CNMG type can also provide a wiper effect. When using acute angle side (80°) When using obtuse angle side (100°) DNMX Type SEW Type Chipbreaker Cutting D · Use a holder with a cutting edge angle of 93°. edge DNMX Type · Tool compensation required. angle Tool Program Correction Guide DNMX type wiper inserts do not comply with the ISO standard. 93° (→ B132) Correct the machining program (tool offset) as explained on the R opposite page (B132). TPGX Type SDW Type Chipbreaker · Use a boring bar with a 93° cutting edge angle. Cutting Edge Position Correction for TPGX Type Breaker (SDW) S · Tool compensation required. Internal boring TPGX type wiper inserts do not comply with the Nose Radius X direction Z direction X axis (+) ISO standard. Cutting edge Correct the cutting edge position angle 93° R0.4 0.12 -0.02 (tool offset) as explained on the right. R0.8 0.12 -0.02 T Note: Unlike the other profiles, the TPGX type is only effective for boring. Z axis (+) CBN (SUMIBORON / Coated SUMIBORON) V CNGA Type / CCGW Type / WNGA Type WG/WH Type Chipbreaker · Use a holder with a cutting edge angle of 95°. Cutting Edge Position Correction for CNGA/CCGW/WNGA Type Breaker (WG/WH Type) · Tool compensation required. Cutting edge Nose Radius Type X direction Z direction W CNGA, CCGW and WNGA type wiper External Turning angle WG Type -0.02 -0.02 X axis (+) inserts do not comply with the ISO 95° R0.4 standard. Correct the cutting edge position WH Type -0.06 -0.06 Solid CBN Ceramics (tool offset) as explained on the right. WG Type -0.01 -0.01 R0.8/R1.2 Z axis (+) WH Type -0.06 -0.06 DNGA Type / DCGW Type WG/WH Type Chipbreaker · Use a holder with a cutting edge angle of 93°. Cutting Edge Position Correction for DNGA/DCGW Type Breaker (WG/WH Type) · Tool compensation required. Cutting External Turning Nose Radius Type X direction Z direction DNGA and DCGW type wiper inserts do not edge angle WG Type -0.17 -0.01 X axis (+) comply with the ISO standard. 93° R0.4 WH Type -0.70 -0.06 Correct the cutting edge position WG Type -0.05 0 (tool offset) as explained on the right. R0.8 Z axis (+) WH Type -0.58 -0.05 DNGA Type/DCGW Type Note: Unlike other contour shapes, the DNGA / DCGW Type can only obtain the wiper effect with outer diameter and inner diameter cutting techniques, and cannot be used for edge cutting. B131