LATHE OPERATIONS - OD1645 - LESSON 1/TASK 3
FIGURE 44. SETTING UP CUTTER BIT FOR
THREAD CUTTING OPERATIONS.
(3) Standard-Change Gears.
Lathes equipped with standard-change gears
require that the operator be familiar with the methods of selecting the
proper gears to produce the desired thread pitch in case the manufacturer
supplied gear tables are missing.
On most lathes with standard change
gears, the gears may be arranged in a simple gear train or in a compound