Several factors are responsible for the high vibrations produced by a cycloidal gearbox. One of these is the backlash of the output pins. Backlash can be introduced by changing the diameter of the output pin hole and the cycloidal discs. Various loads were applied to the gearbox to determine the vibration amplitude. In this article, we study the effects of the backlash on cycloidal gearbox vibrations and propose a simple solution for the problem.
The cycloidal design is ideal for applications requiring high reduction ratio, low loss of motion, and high moment capacity. They are compact and are available in cylindrical and hollow bores with diameters of 65 mm to 210 mm. For applications where reduced speed is important, large precision is essential. The cycloidal design allows the reduction ratio to be increased by stacking a couple of discs together. Cycloidal gearboxes also are compatible with a wide variety of drives.
Another advantage of a cycloidal gearbox is its ability to generate a profile with high reduction ratios and a compact form factor. Another feature of this type of gearbox is its ability to withstand high shock loads. The ERH series features a patented mechanism that allows the adjustment of one wheel relative to another. Furthermore, the housing enables a reduction in the backlash of the output shaft. Another benefit of this gearbox is its ability to minimize friction and maximize efficiency.
The cycloidal gearbox is divided into three parts: input, deceleration, and output. The pin shaft is the input portion of the gearbox and the output shaft is the deceleration part. The pin shaft is in contact with the output shaft using rolling friction. The needle teeth are covered with a needle sleeve. Various industries have used a cycloid gearbox. Its durability and service life make it a great choice for a wide range of applications.
Another important design criteria is load distribution along the width of the gear. This criterion is illustrated in Figure 8 and 9. In the same way, the trochoidal profile of the outer roller No. 14 needs to be defined accurately in order to ensure the proper mating of assembled rotating parts. In a final step, we can apply a graphical representation of the contact forces. With mesh refinement along the disc width, contact force distribution is made even.
The generating circle diameter is typically half the pitch diameter of the gear. The result is a straight radial line. The addenda are parts of the epicycloid and are easy to shape by hand. The dedendum gear is similar to the cycloid gear, except that the addenda are not complete epicycloids, but they are portions of them, resulting in a tooth profile reminiscent of a Gothic arch.
The reversible nature of a cycloidal gear makes it highly efficient. It allows for small differences in centre distance between the base and follower shafts without altering the velocity ratio. Its reversible feature makes it a desirable choice for marine propulsion systems, where radial and axial motions are important. Its high efficiency is another reason it is used. One major benefit is its low cost.