Основной каталог Kyocera 2016-2017 - страница 473

2) When using both Main and Sub spindles Main Spindle In this case, when the cutting edge runs beyond the center line, the insert will Sub Spindle contact the workpiece, since the workpiece does not fall off. e.g.) When the cutting edge is programmed to run 1mm beyond the center. 1 φD2 Workpiece maximum, φD2 (Fig.4) [φDmax−1mm×2] (mm) (The clearance between the insert and the workpiece is 0.2mm) Fig.3 Fig.4 (When the edge is at the center) (When the edge is 1mm beyond the center)  Tough Edge, T-Chipbreaker  Fracture resistance comparison (Interruption) Cutting Edge (Front Relief Surface) T-Chipbreaker (PR1225) Competitor C Competitor D ·Vc=80m/min 3,000 passes 700 passes 3,000 passes ·f=0.05mm/rev (At Cut-off: 0.015mm/rev) ·Wet ·Workpiece material: SK4 Fracture of corner Fracture of corner H 1,000 passes 2,000 passes 3,000 passes Tough Edge, T-Chipbreaker (PR1225) Cut-off × Workpiece (with flat cuts on two sides) Competitor C ·TKF12R200-T-16DR (PR1225) Competitor D × Compared to Comp. C and D, Tough Edge “T-Chipbreaker” achieves superior fracture resistance in interrupted machining.  How to select edge prep.  Troubleshooting Countermeasures Lead Angle (θ) Edge Width Name of Chipbreaker Neutral (0°) Yes Narrower Wider S T NB Problems Countermeasures Insert Fracture Insert Fracture Effective Effective Effective Effective Prevention Long cutting time Cutting time Effective Effective Effective Effective reduction Entangled chips Prevention of Effective Effective Effective chip entanglement Large boss remain Small boss remain Effective Effective Effective Ring Remain Prevention of Effective Effective Effective (Hollow Workpiece) Ring Remain Deformation of Hollow Preventing Effective Effective Effective Workpiece (pipe) deformation H9