423 Каталог ISCAR 2017 Токарный металлорежущий инструмент и инструментальная оснастка Стр.419

Каталог ISCAR 2017 Токарный инструмент и оснастка Стр. 419 0423 ENG Lab2u

PARTING USER GUIDE Selection of Corner Radius Setup The optimal cutting edge height above the center of SELF-GRIP tools is up to 0.08 mm + 0.025 mm W.O.C., an advantage when cutting solid bar to center Cut-off as close to chuck as possible On new applications, first machine in the low or middle range of recommended speeds and feeds Machining Consistency of speed and feed improves performance Apply coolant abundantly Secure inserts into clean pockets Cutting forces on soft workpiece materials may be insufficient to push insert well into pocket. Tap insert into place using a plastic hammer On a conventional lathe, lock the carriage to prevent axial motion during cut-off Usage Replace worn inserts promptly, the price of a new one is much less than the risk of damage from continuing with one that is worn out Replace blades that have worn or damaged pockets Never try to repair damaged pockets Chip curling is dependent on the chipformer type and the machining conditions Chipformer Features Narrows the chip Eliminates friction with groove walls, prevents chip jam overload Permits higher feeds Produces unscratched surfaces, eliminating additional facing Curls the chips into compact spirals for easy disposal 1. A smaller corner radius (r) will reduce the load on the workpiece and produce a smaller size burr 2. At the same time, a large corner radius allows for higher feeds and increased tool life Standard Corner Radius "S" Sharp Corners JS/P Cutting edge with positive rake and sharp corners When a minimum burr (pip) size is essential For small feeds For small diameters or thin walls For CNCs, multi-spindle and screw machines "B" Large Corner Radius Sharp corner JS Standard medium corner size For general applications and materials Medium (standard) corner radius Reinforced corners with stronger cutting edge For tough applications and interrupted cuts Large corner radius Member IMC Group kSSII t P PARTING