Bevel gear manufacturing involves precision processes to create gears with conical tooth profiles, ensuring smooth transmission of torque between intersecting shafts. Key technologies include gear hobbing, lapping，milling and grinding, as well as advanced CNC machining for high accuracy. Heat treatment and surface finishing enhance durability and performance, while modern CAD CAM systems optimize design and production efficiency

Gears manufacturing technologies for processing bevel gears mainly include the following steps:

1. Material Selection:

   - Selecting appropriate gear materials, typically high strength, high toughness alloy steels such as 20CrMnTi, 42CrMo, etc., to ensure the load bearing capacity and durability of the gears.

2. Forging and Heat Treatment:

   - Forging: Improving the microstructure of the material and enhancing its mechanical properties through forging.

   - Normalizing: Eliminating forging stresses and improving machinability after forging.

   - Tempering: Enhancing the toughness and strength of the material in preparation for subsequent cutting processes and carburizing treatments.

3. Precision Casting:

   - For certain small or complex shaped bevel gears, precision casting methods may be used for manufacturing.

4. Rough Machining:

   - Including milling, turning, etc , to remove most of the material and form the preliminary shape of the gear.

5. Semi-finish Machining:

   - Further processing to improve the accuracy of the gear in preparation for finish machining.

6. Carburizing Treatment:

   - Forming a layer of carbides on the gear surface through carburizing treatment to increase surface hardness and wear resistance.

7. Quenching and Tempering:

   - Quenching: Rapidly cooling the carburized gear to obtain a martensitic structure and increase hardness.

   - Tempering: Reducing quenching stresses and improving the toughness and stability of the gear.

8. Finish Machining:

   - Including gear grinding, shaving, honing, etc, to achieve high precision tooth profiles and surfaces.

9. Tooth Forming:

   - Using specialized bevel gear milling machines or CNC machines for tooth forming to create the tooth shape of the bevel gear.

10. Tooth Surface Hardening:

    - Hardening the tooth surface to improve wear resistance and fatigue resistance.

11. Tooth Surface Finishing:

    - Including gear grinding, lapping, etc., to further improve the precision and surface finish of the tooth surface.

12. Gear Inspection:

    - Using gear measurement centers, gear checkers, and other equipment to inspect the accuracy of the gear and ensure gear quality.

13. Assembly and Adjustment:

    - Assembling the processed bevel gears with other components and adjusting them to ensure smooth operation of the transmission system.

14. Quality Control:

    - Implementing strict quality control throughout the entire manufacturing process to ensure that each step meets design and process requirements.

These key manufacturing technologies ensure the high precision, efficiency, and longevity of bevel gears, enabling them to meet the needs of various industrial applications.