674 Каталог ISCAR 2017 Вращающийся режущий инструмент и инструментальная оснастка Стр.670

Каталог ISCAR 2017 Ротационный инструмент Стр. 670 0674 ENG Lab2u

GUNDRILLS ISCAROUNL Typical Gundrill Applications USER GUIDE Main Drilling Methods Figure 1 V rfSyi' L Guide Ba &- J t i LJV rrel J User Guide The gundrill is not a self-centering tool. Therefore an external means must be used to guide it to the point of entry into the workpiece. It is recommended that the machine tool be equipped with a means for guiding the gundrill, preferably during the entire drilling process. An alternative method is a pre-drilled guide hole (figure 2), which is common for machining centers. Once the drill has been fully engaged into this hole, it continues to be self-guided. The guide pads contribute to the high degree of calibration and provide burnishing of the drilled hole. Typical Gundrill Applications -Chip Evacuation and Coolant Flow Boring with chip evacuation and coolant flowing opposite the boring direction Drilling of solid material with chip evacuation and coolant flow opposite the drilling direction Boring with chip evacuation in the boring direction Boring with a staged tool Chip evacuation and coolant flow in the boring direction 670 ISCAR