1. Characteristics and Classification of High-Speed Light-Load Gear Pairs

1.1 Main Characteristics

• Extremely high rotational speed (linear speed can reach 50-150 m/s)
• Relatively small load (tooth surface contact stress is usually <800 MPa)
• High precision requirements (ISO 3-5 grade accuracy)
• Strict dynamic performance requirements (low vibration, low noise)
• High requirements for temperature rise control (to prevent thermal deformation from affecting meshing)
• Prominent demand for lightweight design

1.2 Classification Methods

By Gear Type

• Involute spur gears
• Helical gears (single-helical teeth, double-helical teeth)
• Herringbone gears
• Bevel gears (straight teeth, spiral teeth)

By Material Type

• Metal gears (alloy steel, titanium alloy, etc.)
• Non-metallic gears (engineering plastics, composite materials)
• Mixed-material gears

2. Design of High-Speed Light-Load Gear Pairs

2.1 Core Design Criteria

• Dynamic balance criterion: Ensure that the vibration during high-speed operation is controlled within the allowable range.
• Thermal balance criterion: Control the meshing temperature rise to avoid the impact of thermal deformation.
• Precision retention criterion: Ensure the precision stability during long-term operation.
• Fatigue life criterion: Although the load is relatively light, high-cycle fatigue still needs to be considered.
• Noise control criterion: Meet high-standard acoustic performance requirements.

2.2 Key Parameter Design Principles

Module Selection

• Small modules are usually adopted (0.5-3 mm).
• It should meet the requirement: m ≥ (0.01-0.02)a, where "a" is the center distance.

Number of Teeth Design

• Pub Time : 2025-12-16 09:32:43 >> News list