Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA

Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA

Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA _ TECHNIC OPERATIONAL GUIDANCE Drill Holding Thrust bearing type collet chuck holds the drill securely. Coolant Method (External Coolant) 1 'J I Two coolant positions, at the end and at the center are ideal. Thin Workpiece IF If Bending Occurs X Support the Workpiece S o Drill Length DC x 1.5 Through Coolant Type (Internal Coolant) Spindles Revolving Through Coolant Coolant Type Machine Type Coolant pressure is approx. 0.5-1 MPa (<05:2 3MPa). Coolant volume is 1.5 4.0l/min. Interrupted Cutting v izf J One Process O Lower the feed when drilling the interrupted part. Requires Prior Machining A Spot face with an end mill prior to drilling. Drill Installation Do not clamp on the flutes. Drill Installation Pre-prepared hole drilling for 1 DC (DC = diameter) Use the prepared hole as a guide when using a drill with an oil hole. Depending on the cutting conditions, peck feed is recommended. Stepped Holes Divide the two processes. Drill the larger hole first. A tool for machining both chamfer and spot face can be produced to order. NOTES ON USE Please use a fine mesh filter (mesh<3ym) for coolant to prevent jamming in the oil hole. For deep drilling (l/d>3), machining guiding hole is recommended. Pick drilling is also effective. Installation Tolerance Run-out < 0.03mm Coolant Handling 1) Small particles of swarf will jam in the oil hole of small diameter drills. Always use a fine mesh filter as a preventative measure. 2) Dirt and dust particles adhere to the oil in old coolant and prevent an efficient flow. Regular coolant exchange is recommended. Burring and Workpiece Chipping Lower the feed rate by 50% at the end of through cutting. Add a 45°chamfer. Change the point angle. 1998 Mitsubishi Materials