667 Каталог ISCAR 2017 Вращающийся режущий инструмент и инструментальная оснастка Стр.663

Каталог ISCAR 2017 Ротационный инструмент Стр. 663 0667 ENG Lab2u

ISCARGUNDnii USER GUIDE Standard Gundrill Head Profiles Drilling capacity and finish of the drilled hole are dependent on the geometrical shape of the drill head. Both the profile and the sharpening must be matched to the workpiece material. The profile is defined when the tool is manufactured. Although regrinding may change the cutting geometry, the profile should remain the same. General Sketch All cross section profile parameters such as: P, La and must be precisely matched to the workpiece material properties. Profile G (Universal) Standard form for most material types, particularly for materials with a tendency to shrink. Recommended for high precision bore tolerance and straightness. Maintains precise exit hole size. Recommended when extra burnishing is required. Profile A Suitable for cast iron (usually coated) and aluminum alloys. Can be used for cross drilling, angular entry or exit and for interrupted cut. Large coolant gaps between pads. Profile B Excellent size control, for high precision hole tolerance. Used for cast iron and aluminum alloys. Profile C Used for angled entry or exit. Large back taper, for shrinking materials such as types of alloys and stainless steel. Large coolant gaps between pads. Profile D Suitable for cast iron only. Very effective in grey cast iron (usually coated). Profile E General use, for alloys and stainless steel. This profile eliminates the problem of the tool sticking in the hole after the outer corner dulls. Especially suitable for crankshaft and other forged materials. Recommended for accurate hole straightness. Profile H Recommended for all nonferrous and cast iron materials up 5 mm diameter. Sometimes used for wood and plastic with larger back taper. Profile I Used for aluminum and brass for best hole finish. For intersecting holes and interrupted cut or when extra outer diameter support and burnishing is required. 663 GUNDRILLS