Manufacturing Processes for Bevel Gears: From Forming to Generating Methods
2026-01-29
The manufacturing processes for bevel gears have evolved from forming methods to generating methods. Early forming methods (such as milling teeth individually using a disc-shaped milling cutter) involved simpler equipment but offered limited tooth profile and indexing accuracy, along with lower production efficiency. The current mainstream generating methods are based on the principle of gear meshing. Using dedicated machines (such as specialized gear cutting machines based on Gleason or Oerlikon systems), the cutter and gear blank simulate the meshing motion of a pair of conjugate gears, thereby "generating" the precise tooth profile. Among these, spiral bevel gears are typically milled using a cutter head. The application of modern CNC technology has further enhanced automation and precision in processing. After tooth profile machining, depending on performance requirements, heat treatment (such as carburizing and quenching to increase surface hardness and wear resistance) and finishing processes (like gear grinding or lapping) are usually performed to improve precision and reduce noise.
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