TABLE OF CONTENTS THREADS AND THREADING Machinery's Handbook, 31st Edition
TAPPING AND THREAD CUTTING (Continued) 2153 Diameter of Tap Drill 2154 Reaming Allowance 2155 Tap Drill Sizes and Percentage of Thread (Unified Thread) 2160 Hole Size Limits 2168 Tap Drill Sizes 2169 Tap and Clearance Drills 2169 Tolerances of Tapped Holes 2170 Hole Sizes before Tapping 2171 Miniature Screw Threads 2172 Tapping Drill Sizes for Screw and Pipe Threads 2172 ISO Metric Threads 2173 Clearance Holes 2174 Cold Form Tapping 2175 Core Hole Sizes 2176 Tap Drill Sizes 2176 Removing a Broken Tap 2176 Tap Drills for Pipe Taps 2176 Power for Pipe Taps 2177 High-Speed CNC Tapping 2178 Coolant for Tapping 2178 Combined Drilling and Tapping 2179 Relief Angles for Cutting Tools 2181 Lathe Change Gears 2181 Change Gears for Thread Cutting 2181 Compound Gearing 2181 Fractional Threads 2182 Change Gears for Metric Pitches 2182 Threads per Inch Obtained with a Given Combination of Gears 2182 Change Gears for Fractional Ratios 2183 Quick-Change Gearbox Output 2185 Finding Accurate Gear Ratios 2185 Lathe Change-Gears 2186 Relieving Helical-Fluted Hobs THREAD ROLLING 2187 Flat-Die Type Machine 2187 Cylindrical-Die Type Machine
THREAD ROLLING
(Continued) 2187 Rate of Production 2188 Precision Thread Rolling 2188 Steels for Thread Rolling 2188 Diameter of Blank 2189 Automatic Screw Machines 2189 Factors Governing the Diameter 2189 Diameter of Threading Roll 2189 Kind of Thread on Roll 2190 Application of Thread Roll 2190 Tolerances on Wire for Thread Rolling 2190 Speeds and Feeds for Thread Rolling THREAD GRINDING 2192 Accuracy Obtainable 2192 Wheels for Thread Grinding 2192 Single-Edge Wheel 2193 Edges for Roughing and Finishing 2193 Multi-Ribbed Wheels 2194 Alternate-Ribbed Wheel for Fine Pitches 2194 Grinding Threads “from the Solid” 2194 Number of Wheel Passes 2194 Wheel and Work Rotation 2195 Wheel Speeds 2195 Work Speeds 2195 Truing Grinding Wheels 2195 Wheel Hardness or Grade 2196 Grain Size 2196 Grinding by Centerless Method 2196 Principle of Centerless Grinding THREAD MILLING 2197 Single-Cutter Method 2197 Multiple-Cutter Method 2198 Planetary Method 2198 Classes of Work 2199 Max. Pitches of Die-Cut Threads 2199 Changing Pitch of Screw Threads 2199 Helix 2200 HelixAngles
1939
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