Faster machining of largediameter deep holes than gun drills

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=7xv9KwxN4RQ

Non-step machining of holes 30 mm in diameter and 500 mm in depth • Long drills are less of an option for diameters larger than Φ20mm. • This video introduces the ejector drill method for non-step drilling of large-diameter deep holes. • Please refer to the related video below for details. • Related video: • 大きく深い穴をノンステップで一発加工 / ドリルの取付場所は？ • If guide bushings are not used, guide holes are drilled first. • The feed rate is 0.2mm/rev, which is faster than a gun drill, so the machining time is quicker. • Drill: Ejector drill (double tube type) • Drill diameter: Φ30mm • Peripheral speed: 100 m/min • Rotation speed: 1.060rpm • Feed speed: 0.2mm/rev • Workpiece material: S45C/JIS • Machining method: Non-step • Coolant pressure: 2.5 Mpa • Machining time: 150 sec. • Nakamura-Tome Home Page:http://www.nakamura-tome.co.jp • Nakamura-Tome LinkedIn： / nakamura-tome-precision-industry-co-ltd • #shorts #CNC #machine tool #Ishikawa #Nakamura-Tome #NC lathe #processing #machine #nakamura #nakamuratome #deep hole drilling #ejector drill

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