1411 Каталог MITSUBISHI 2015 Токарный и вращающийся инструмент Инструментальные решения Стр.N095

Каталог MITSUBISHI 2015 Металлорежущий инструмент Стр. N095 1411 ENG Lab2u

CARBIDE OPERATIONAL GUIDANCE FOR THE MHS LONG TYPE DRILL (L D 10) FLAT FACE DRILLING Drilling a blind hole 1. Drilling a pilot hole 2. Initial cutting with the long type drill Use a drill with a larger (flatter) point angle than the super long type. Use the shortest flute possible. Ensure a high precision hole Is drilled for the guide. Drill depth Approx 1DC. (Adjust the pilot hole depth according to the length of the long type drill.) Penetrate the guide hole at low revolution. (Revolution 1OOOmin"1 feed rate 0.2 0.3mm/rev) Stop the long type drill 1 3mm short of the guide hole bottom. 3. Drill the deep hole 4. Drill retraction After drilling lower the cutting revolution about 0.5 1 mm short of the hole end. (Revolution of around 1000min'1) Retract the drill to the pilot hole depth starting point at a feed rate of 3000mm/min. Finally clear the hole at a cutting speed of 20 30m/min and feed rate of 0.2 0.3mm/rev. INTERRUPED DRILLING Drilling and breaking through on irregular faces or angles 11. Spot facing 2. Drilling a pilot hole Machine a flat or the irregular face by using an end mill or slot drill capable of spot facing. Make the spot face diameter the same size as the required deep hole diameter. OUse a drill with a larger (flatter) point angle than the super long type. Use the shortest flute possible. Ensure a high precision hole is drilled for the guide. Drill depth Approx 1 DC. (Adjust the pilot hole depth according to the length of the long type drill.) 3. Initial cutting with the long type drill Penetrate the guide hole at a low revolution. (Revolution 1000min' feed rate 0.2 0.3mm/rev) Stop the long type drill 0.5 1 mm short of the guide hole bottom. 4. Drill the deep hole Start cutting at the recommended speed and feed with a non-peck (continuous feed) cycle. 5. Breaking through 6. Drill retraction Finally clear the hole at a cutting speed of 20 30m/min and feed rate of 0.2 0.3mm/rev. Retract the drill to the pilot hole depth starting point at a feed rate of 3000mm/min. TECHNICAL DATA -Q001 N095 DRILLING