What is the working principle of the WHC160-40-3 arc cylindrical worm gear reducer

WHC160-40-3 The working principle of the circular cylindrical worm gear reducer is based on the meshing transmission of the worm gear and worm, which is as follows:

• Basic structure and transmission method : The reducer is mainly composed of a worm and a worm gear. The worm is usually an active member and the worm gear is a driven member. The worm is a shaft with spiral teeth, and its shaft cross-section is an arc-shaped gear, while the worm wheel is an arc-shaped gear with tooth conjugated to the worm. During operation, the worm is driven by a power source such as a motor to rotate at high speed, and the power is transmitted to the worm gear through the meshing of the spiral tooth surface and the worm gear tooth surface.

• Speed ​​reduction mechanism : The speed reduction ratio is determined by the number of worm heads and worm gear teeth

• Principle of improving load-bearing capacity and efficiency : The worm gear and worm are convex and concave meshed, and the majority of the meshing area have a large radius of curvature, which reduces the tooth surface stress, increases the tooth surface strength, and improves the load-bearing capacity. At the same time, the angle between the contact line and the circumferential velocity is mostly between 40° and 90°, which makes it easy to form liquid lubrication, and the friction coefficient between the teeth surfaces is small, so the transmission efficiency is high.

• Torque change : According to the principle of power conservation (when losing is ignored, power = speed × torque), while the speed decreases, the torque increases proportionally according to the reduction ratio. Therefore, the torque output from the worm gear is times that of the worm input torque (number of worm gear teeth ÷number of worm heads) (the transmission efficiency loss needs to be considered), so that a large output torque can be provided to the load.