Gear Manufacturing

Precision Gear Production: Shaping, Hobbing, and
Grinding for Optimal Performance

Gear Manufacturing

Precision Gear Production: Shaping, Hobbing, and
Grinding for Optimal Performance

What is Gear Manufacturing?

Gear manufacturing involves a range of high-precision machining operations used to create gear teeth profiles. These processes ensure the correct geometry, strength, and minimal noise required for power transmission applications.

Gear Hobbing

High-Speed Production for External and Helical Gears

What is Gear Hobbing?

Hobbing is a continuous indexing process where a helical cutting tool (the hob) rotates and is fed into a gear blank. The hob's teeth generate the gear's tooth profile by successively cutting away material. It is the fastest and most economical method for producing external gears

Key Advantages

  • High Production Rate: Ideal for high-volume manufacturing due to its continuous, fast nature.
  • Versatility: Capable of producing spur gears, helical gears, worms, splines, and
  • Accuracy: Offers high indexing accuracy, ensuring consistent tooth spacing.

Use Cases

  • Standard spur and helical gears for automotive transmissions
  • Productionof sprockets and splined shafts

Gear Shaping

Internal Gears and Shoulder Gears with Obstructions

What is Gear Shaping?

Shaping uses a reciprocating cutter (either a pinion or rack cutter) that functions like a master gear to generate the tooth profile. This method is uniquely capable of machining teeth right up to a shoulder or adjacent feature.

Key Advantages

  • Internal Gears: The only effective method for producing internal spur and helical
  • Close to Shoulders: Essential for gears where the teeth run very close to a flange or another obstructing feature.
  • Non-Circular Gears: Can be used to produce non-conventional, non-circular gear designs.

Use Cases

  • Planet carrier gears (internal automotive use)
  • Cluster gears and integral gears
  • Gears with tight run-out tolerances near a face or shoulder

Gear Grinding

Achieving the Highest Precision and Surface Finish

What is Gear Grinding?

Grinding is a finishing process that follows hobbing or shaping. It uses abrasive wheels to remove minute amounts of material from the gear tooth flanks, achieving the final, highest-level of accuracy (up to AGMA Quality 15) and surface finish.

Key Advantages

  • Maximum Accuracy: Corrects lead, profile, and index errors that may have occurred during previous cutting or heat treatment.
  • Reduced Noise: The smooth, precise surface dramatically reduces running noise and vibration.
  • Post-Heat Treatment: Essential for finishing hardened gears, as it removes distortion caused by the hardening process.

Use Cases

  • High-speed applications (aircraft, wind turbine gearboxes)
  • Precision instruments and tooling
  • Gears requiring minimal backlash and vibration