Каталог Iscar токарный инструмент 2017 - страница 424

Lead Angle

Lead angle (K) on cut-off inserts reduces size of burr turning direction. When looking toward the chuck from the remaining on workpiece. Increasing the lead angle workpiece, R.H.=counterclockwise (C.C.) rotation of reduces the burr, but also reduces possible feed workpiece and L.H.=clockwise (C) rates and tool life. rotation of workpiece. C.C. requires right-hand inserts; C Therefore, neutral inserts are recommended requires left-hand inserts. for parts on which a burr is tolerated. A neutral insert with 0º lead angle increases Insert designations such as TAG R... DGR (R.H.) and D.O.C. capacity. TAG L... DGL (L.H.) comply with standard terms for

Left Neutral Right

TAG R/DGR TAG N/DGN

TAG L/DGL TAG N/DGN TAG R/DGR

K

TAGR/GFR/DGR TAGR/GFN/DGN

TAG R/DGR - WRONG

Neutral Insert vs. Lead Angle Type

Part

Lifetime Chip Control Burr Size Surface Finish Straaightness