Gear Generating with Various Cutters
Figure 24.30 (a) Producing gear teeth on a blank by form cutting.
(b) Schematic illustration of gear generating with a pinion-shaped gear cutter.
(c) and (d) Gear generating on a gear shaper using a pinion-shaped cutter.
Note that the cutter reciprocates vertically. (e) Gear generating with rack-shaped cutter. Source: (d) Schafer Gear Works, Inc.
Hobbing
Figure 24.31 (a) Schematic illustration of gear cutting with a hob. (b) Production of worm gear through hobbing. Source: Courtesy of Schafer Gear Works, Inc.
Bevel Gears
Figure 24.32 (a) Cutting a straight bevel-gear blank with two cutter. (b) Cutting a helical bevel gear. Source: Courtesy of Schafer Gear Works, Inc.
Finishing Gears by Grinding
Figure 24.33 Finishing gears by grinding: (a) form grinding with shaped grinding wheels;
(b) grinding by generating with two wheels.
Types of Burs
Figure 24.28 Types of burs used in burring operations.
Involute Spur Gear
Figure 24.29 Nomenclature for an involute spur gear.
Gear Manufacturing Cost as a Function of Gear Quantity
Figure 24.34 Gear manufacturing cost as a function of gear quality. The numbers along the vertical lines indicate tolerances.
