Основной каталог Kyocera 2021 - 2022 - страница 475

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Grooving External grooving GBF type Compatiblity with GBF and GBA 1. GBF will fit KGBA / KGBAS toolholders. • Caution: The maximum groove depth for KGBA / KGBAS toolholders is 2.5 mm 2. GBA inserts will also fit KGBF-F toolholders • Caution: The rake angle after installation in the toolholder is 11° KGBF-F toolholder with GBF insert maximum machining diameter • 3 mm groove depth is available on workpiece diameters up to ø51mm. • 2.7 mm groove depth is available on workpiece diameters up to ø100mm. • 2.5 mm or less groove depth is available on workpiece diameters up to ø200mm The workpiece will interfere with the holder at maximum diameter or larger Max. cutting diameter Max. cutting diameter at 3 mm grooving depth G 3 (Max. grooving depth) (Max. cuttinø5g1diameter) Interference at over diameter ø51 KTGF-F / KTGF selection reference Q : What is the difference between "without offset" and "with offset " of KTGF toolholders for external grooving? A :When operating the automatic lathe, the toolholder come very close to the chuck. In such cases, the "with offset" toolholder sometimes interferes with the chuck due to the large gap between B and F1 dimensions as shown below. It is necessary to use "without offset" in such cases. Dimension F1 Dimension F1 No gap Dimension B Large gap Dimension B KTGF-F (without offset) KTGF (with offset) G21