Каталог Widia all star 2020 - страница 173

• TABLE OF CONTENTS
• INDEXABLE MILLING
• 0º/90º SHOULDER MILLS
• 90° HIGH-SPEED CUTTING MILLS
• FACE MILLS
• HIGH-FEED MILLS
• COPY MILLS
• SOLID END MILLING
• HIGH-PERFORMANCE SOLID CARBIDE END MILLS
• GENERAL PURPOSE SOLID CARBIDE END MILLS
• HOLEMAKING
• SOLID CARBIDE DRILLS
• MODULAR DRILLS
• INDEXABLE DRILLS
• TAPPING
• TURNING
• HIGH-PERFORMANCE INSERTS
• GROOVING & CUT-OFF
• Informational Icons Guide
• Material Overview • DIN

TURNINGTAPPINGHOLEMAKINGSOLID END MILLINGINDEXABLE MILLING High-Performance Solid Carbide End Mills • Hard Materials Table of Factors to Maximise Ball Nose Cutting Speed for Hard Machining • Metric Calculation Examples Table of Factors for Speed Calculation of Ball Nose Average Wall ap/D Angle 0.003 0.006 0.010 0.016 0.020 0.025 0.030 0.0° 9.1 6.5 5.0 4.0 3.6 3.2 2.9 3.0° 6.2 4.9 4.0 3.3 3.0 2.8 2.6 5.0° 5.1 4.2 3.5 3.0 2.8 2.5 2.4 8.0° 4.1 3.4 3.0 2.6 2.4 2.3 2.1 10.0° 3.6 3.1 2.7 2.4 2.3 2.1 2.0 15.0° 2.8 2.5 2.2 2.0 1.9 1.8 1.7 20.0° 2.3 2.1 1.9 1.8 1.7 1.6 1.6 30.0° 1.7 1.6 1.5 1.4 1.4 1.3 1.3 40.0° 1.4 1.3 1.3 1.2 1.2 1.2 1.2 50.0° 1.2 1.2 1.1 1.1 1.1 1.1 1.1 55.0° 1.1 1.1 1.1 1.1 1.1 1.0 1.0 For calculating real cutting speed, use formula: Basic cutting speed * TiAlN or AlTiN Factor Basic Cutting Speed Vc Choose the coefficient according to the ap/D and average wall angle. Material m/min Example 1: Group min max For Tool = 10mm and ap = 0,2mm for average wall angle 0°, ap/D ratio P3 160 – 180 equal 0,2/10 = 0,02. Factor equal 3.6. P4 140 – 160 Example 2:For Tool = 8mm and ap = 0,1mm for average wall angle 10°, ap/D ratio H1 100 – 140 equal 0,1/8 = 0,0125. Factor will be between 2.7 and 2.4, choose 2.6. H2 70 – 120 Keep in mind shank diameter and length effect. H3 60 – 90 If tool length out of the chuck is more than 2 x D, please decrease feed H4 50 – 70 per tooth by 15% each 1 x D. Application example #1 = Application example #2 = face milling a flat surface face milling a 10º average wall angle D = 10mm D = 8mm ap = 0,2mm ap = 0,1mm Average wall angle = 0° Average wall angle = 10° Finishing H2 Finishing H2 Starting vc from chart = 100 Starting vc from chart = 100 ap/D = 0.02 ap/D = 0,1/8 = 0,0125 Factor from table = Factor from table = 3.6 2.6 vc to programme into machine = 100 * 3.6 = 360 m/min vc to programme into machine = 100 * 2.6 = 260 m/min RPM = 360* 1000/3.14/10 = 11460 RPM RPM = 260* 1000/3.14/10 = 7640 RPM widia.com B51