Internal Helical Gear The Optimal Solution for High Torque and Low Noise Transmission in Vehicles

1. Structural Characteristics of Internal Helical Gear

Internal helical gears comprise an internal gear and an external gear. The tooth pockets of the internal gear are helical in shape,

while the teeth of the external gear are helical teeth designed to mesh with the tooth pockets of the internal gear.

Compared to spur gears, the contact line between teeth is inclined. During meshing, the teeth gradually engage and disengage,

with the contact line lengthening before shortening.

2. Advantages of Internal Helical Gear

a) High load capacity: The helical tooth design increases tooth surface contact area and distributes loads more evenly,

    enabling higher torque transmission and enhancing overall gear strength.

b) Smooth operation and low noise: The gradual engagement and disengagement characteristics reduce impact and vibration,

    minimising noise levels. This makes helical gears suitable for applications with stringent noise requirements.

c) High transmission efficiency: Excellent tooth surface contact results in minimal friction losses during meshing,

    ensuring high transmission efficiency and effective power transfer.

d) Compact structure: For equivalent gear ratios, internal helical gears occupy less space than other types,

    making them suitable for machinery with limited dimensions.

3. Application of Internal Helical Gear

a) Automotive industry: Commonly used in vehicle transmissions to achieve efficient, smooth gear changes,

    enhancing power delivery and driving comfort.

b) Machinery Manufacturing: Employed in diverse equipment such as industrial mixers, printing presses,

    and textile machinery for precise, reliable power transmission.

c) Robotics: Serve as critical components in robotic joint drives, ensuring smooth,

    accurate articulation to execute complex movements.

d) Aerospace Industry: Play a vital role in high-torque transmission applications like aircraft landing gear systems,

    guaranteeing reliable system operation.