What factors are related to the transmission ratio of CWU180 worm gear reducer

The transmission ratio of CWU180 worm gear reducer is mainly related to the following factors:

Number of worm heads: The fewer worm heads there are, the greater the transmission ratio when the number of worm gear teeth is the same. For example, when a single head worm rotates once, the worm wheel only rotates one tooth; If it is a double headed worm, the worm rotates once and the worm wheel rotates two teeth. So, the number of worm heads is one of the key factors determining the transmission ratio, and the recommended values for worm head numbers are usually 1, 2, 4, 6, etc.

Number of worm gear teeth: The more worm gear teeth there are, the greater the transmission ratio. In order to ensure the smoothness of transmission, it is usually stipulated that the number of worm gear teeth should be greater than 28. For power transmission, the commonly used range of worm gear teeth is 28-70; For the transmission of motion, the number of worm gear teeth can reach 200, 300, or even 1000.

Modulus: Modulus refers to the modulus of the worm shaft surface, as well as the modulus of the worm wheel end face, and is a standard value. Under other constant conditions, the larger the modulus, the larger the size of the worm gear, and the corresponding number of teeth may also increase, thereby affecting the transmission ratio.

Worm diameter coefficient: The worm diameter coefficient is the ratio of the diameter of the worm indexing circle to its modulus. The introduction of this coefficient is to limit the number of worm gear cutters and standardize the diameter of the worm gear indexing circle. When the modulus is constant, the larger the worm diameter coefficient, the higher the stiffness and strength of the worm shaft, and it will also indirectly affect the transmission ratio.

Center distance: Center distance refers to the distance between the two axes of the worm and worm gear. The change in center distance will affect the meshing relationship between the worm gear and worm, thereby affecting the transmission ratio.