458 Каталог INGERSOLL 2011 Режущий инструмент и инструментальная оснастка Стр.460

Каталог INGERSOLL 2011 Инструмент и оснастка Стр. 460 0458 Lab2u

GENERAL TECHNICAL INFORMATION CHIP GULLET AND FRONT FLUTE DESIGN The number of flutes depends on: workpiece material. size of workpiece. milling conditions and profile shape. Cutters with higher number of flutes have to be preferred as long as chip flow is guaranteed. Geometry of front flutes A 2 flutes 2 flutes cutting to center. B 2 flutes 1 flute cutting above center. C 3 flutes 1 flute cutting above center. D 4 flutes 2 flutes cutting to center. E 2 or 4 flutes not cutting above center. F 5 or 6 flutes not cutting above center. Geometry of front edges PA Axial primary relief angle SA Axial secondary clearance angle Ra Radial rake angle aA Axial rake angle tA Dish angle d1 Cutter diameter a Helix angle 460