IntroductionIntroduction TKF typeTKF type

How to Use

Main spindle

1) When using main spindle only

Maximum cutting diameter is CUTDIA (Fig.1). Even if the cutting edge runs beyond the center line, the insert does not contact the workpiece, since the workpiece falls off. ( The clearance between the insert and the workpiece is 0.2 mm)

Fig.1 Fig.2 (When the edge is at the center) (When the edge is 1mm beyond the center)

2) When using both main and sub spindles

Main spindle Sub spindle In this case, when the cutting edge runs beyond the center line, the insert will contact the workpiece, since the workpiece does not fall off. e.g.) When the cutting edge is programmed to run 1mm beyond the center. Workpiece maximum, CUTDIA2 (Fig.4) = [CUTDIA −1 mm×2] (mm) (The clearance between the insert and the workpiece is 0.2 mm)

HH

Fig.3 Fig.4 (When the edge is at the center) (When the edge is 1mm beyond the center)

How to select edge preparation

Troubleshooting

Lead angle °(PSIRR)EdgeCountermeasures widthName of chipbreaker
Neutral (0)YesNarrowerWiderSTNB
ProblemsCountermeasures
Insert fractureInsert fracture preventionEffectiveEffectiveEffectiveEffective
Long cutting timeCutting time reductionEffectiveEffectiveEffectiveEffective
Entangled chipsPrevention of chip entanglementEffectiveEffectiveEffective
Large boss remainSmall boss remainEffectiveEffectiveEffective
Ring remain (Hollow workpiece)Prevention of ring remainEffectiveEffectiveEffective
Deformation of hollow workpiece (pipe)Preventing deformationEffectiveEffectiveEffective