: Turning and Boring A specialized treatise for machinists students in the industrial and engineering schools and apprentices on turning and boring methods including modern practice with engine lathes turret lathes vertical and horizontal boring machines by

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PAGES

THE ENGINE LATHE--TURNING AND BORING OPERATIONS

General Description of an Engine Lathe--Example of Cylindrical Turning--Facing the Ends Square with a Side-tool--Turning Tool--Turning Work Cylindrical--Roughing and Finishing Cuts--Filing and Finishing--Aligning Centers for Cylindrical Turning--Application of Drivers or Dogs--Lathe Arbors or Mandrels--Different Types of Lathe Arbors--Mandrel or Arbor Press--Steadyrest for Supporting Flexible Parts--Application of Steadyrest when Boring--The Follow-rest--Centering Parts to be Turned--Centering Machine--Different Forms of Centers--Precaution When Centering Tool Steel--Facing the Ends of Centered Stock--Truing Lathe Centers--Universal, Independent and Combination Chucks--Application of Chucks--Example of Boring--Measuring Bored Holes--Setting Work in the Chuck--Inaccuracy from Pressure of Chuck Jaws--Drilling and Reaming--Holding Work on Faceplate--Application of Angle-plate to Faceplate--Supporting Outer End of Chucked Work--Boring Large Castings in the Lathe--Boring Holes to a Given Center Distance--Turning Brass, Bronze and Copper--Machining Aluminum 1-53

LATHE TURNING TOOLS AND CUTTING SPEEDS

Turning Tools for General Work--Tool-holders with Inserted Cutters--The Position of Turning Tools--Tool Grinding--Shape or Contour of Cutting Edge--Direction of Top Slope for Turning Tools--Clearance for the Cutting Edge--Angle of Tool-point and Amount of Top Slope--Grinding a Lathe Tool--Cutting Speeds and Feeds--Average Cutting Speeds for Turning--Factors which Limit the Cutting Speed--Rules for Calculating Cutting Speeds--Feed of Tool and Depth of Cut--Effect of Lubricant on Cutting Speed--Lubricants Used for Turning--Lard Oil as a Cutting Lubricant 54-79

TAPER TURNING--SPECIAL OPERATIONS--FITTING

Setting Tailstock Center for Taper Turning--Example of Taper Turning--Setting the Tailstock Center with a Caliper Tool--Setting the Tailstock Center with a Square--The Taper Attachment--Application of Taper Attachment--Height of Tool when Turning Tapers--Taper Turning with the Compound Rest--Accurate Measurement of Angles and Tapers--To Find Center Distance for a Given Taper--To Find Center Distance for a Given Angle--To Find Angle for Given Taper per Foot--To Find Angle for Given Disk Dimensions--Use of the Center Indicator--Locating Work by the Button Method--Eccentric Turning--Turning a Crankshaft in a Lathe--Special Crankshaft Lathe--Operation of Special Crankshaft Lathe--Spherical Turning--Spherical Turning Attachments--Turning with Front and Rear Tools--A Multiple-tool Lathe--Examples of Multiple Turning--Knurling in the Lathe--Relieving Attachment--Application of Relieving Attachment--Relieving Hobs or Taps Having Spiral Flutes--Classes of Fits Used in Machine Construction--Forced Fits--Allowance for Forced Fits--Pressure for Forced Fits--Allowance for Given Pressure-Shrinkage Fits 80-134

THREAD CUTTING IN THE LATHE

Selecting the Change Gears for Thread Cutting--The Thread Tool--Cutting the Thread--Indicator or Chasing Dial for Catching Threads--Principle of the Thread Indicator--Replacing Sharpened Thread Tool--Use of Compound Rest for Thread Cutting--Threads Commonly Used--Multiple Threads--Cutting a U. S. Standard Thread--Cutting a Left-hand Thread--Cutting a Square Thread--Cutting Multiple Threads--Setting Tool When Cutting Multiple Threads--Taper Threading--Internal Threading--Stop for Thread Tools--The Acme Standard Thread--The Whitworth Thread--Worm Threads--Coarse Threading Attachment--Testing the Size of a Thread--The Thread Micrometer--Three-wire System of Measuring Threads--Rivett-Dock Threading Tool--Cutting Screws to Compensate for Shrinkage--Calculating Change Gears for Thread Cutting--Lathes with Compound Gearing--Fractional Threads--Change Gears for Metric Pitches--Quick Change-gear Type of Lathe 135-177

TURRET LATHE PRACTICE

General Description of a Turret Lathe--Example of Turret Lathe Work--Machining Flywheels in Turret Lathe--Finishing a Flywheel at One Setting in Turret Lathe--Finishing a Webbed Flywheel in Two Settings--Tools for Turret Lathes--Box-tools--Examples of Box-tool Turning--Hollow Mills--Releasing Die and Tap Holders--Self-opening Die Heads--Collapsing Taps--Miscellaneous Turret Lathe Tools--Turning Gasoline Engine Pistons in Turret Lathe--Turning Piston Rings in Turret Lathe--Piston Turning in Pratt and Whitney Turret Lathe--Attachment for Turning Piston Rings--Turning Worm-gear Blanks in Turret Lathe--Turning Bevel Gear Blanks--Shell Turning Operation in Flat Turret Lathe--Chuck Work in Flat Turret Lathe--Double-spindle Flat Turret Lathe--Automatic Chucking and Turning Machine--Example of Work on Automatic Turning Machine--Determining Speed and Feed Changes--Setting the Turret Slide--Setting the Cross-slide Cam--Setting the Boring Tool for Recessing--Adjustments for Automatic Feed and Speed Changes--Turning Flywheel in Automatic Chucking and Turning Machine--Automatic Multiple-spindle Chucking Machine--Selecting Type of Turning Machine 178-241

VERTICAL BORING MILL PRACTICE

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