1577 Каталог MITSUBISHI 2020 Режущий инструмент Фрезы Резцы Сверла Пластины Стр.P121

Каталог MITSUBISHI 2020 Режущий инструмент для станков Стр. P121 1577 Lab2u

CARBIDE OPERATIONAL GUIDANCE FOR THE LONG TYPE DRILL (L/D>3) FLAT FACE DRILLING Drilling a blind hole 1. Drilling a pilot hole 2. Initial cutting with the long type drill I Use a drill with a larger (flatter) point angle than the super long type. MVS pilot drill with point angle 145" is recommended. Ensure a high precision hole Is drilled for the guide. Drill depth : Approx DC 1 2. (Adjust the pilot hole depth according to the length of the long type drill.) Penetrate the guide hole at low revolution. (Cutting speed 20 30m/min, feed rate 0.2 0.3mm/rev) Stop the long type drill 1 3mm short of the guide hole bottom. 13. Drill the deep hole 14. Drill retraction After drilling, lower the cutting revolution about 1 2mm short of the hole end. (Cutting speed of around 20 30m/min) 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 1. Spot facing iDrilling and breaking through on irregular faces or angles 2. Drilling a pilot hole >DCx 1 When machining a deep hole into an inclined surface, use MFE drill as a drill for a guide hole. Ensure a high precision hole is drilled for the guide. Drill depth : Approx DC 1. Use a drill with a larger (flatter) point angle than the super long type. MVS pilot drill with point angle 145" is recommended. Ensure a high precision hole is drilled for the guide. Drill depth : Approx DC 1 2. (Adjust the pilot hole depth according to the length of the long type drill.) 13. Initial cutting with the long type drill 14. Drill the deep hole Penetrate the guide hole at a low revolution. (Cutting speed 20 30m/min, feed rate 0.2 0.3mm/rev) Stop the long type drill 1 3mm short of the guide hole bottom. Start cutting at the recommended speed and feed with a non-peck (continuous feed) cycle. 15. Breaking through 16. 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 > R001 P121 DRILLING