CHAPTER IV

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

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 · 第 4 / 10 章