Abstract
Recently, cycloidal drives have been increasingly used due to their beneficial features, such as the implementation of a large transmission, efficiency, and high performance density. Production accuracy is inevitable in order to ensure the dynamically proper and smooth operation of the drive. Smaller backlash and minimal transmission fluctuations can only be achieved by improving the production accuracy, reducing the number of production failures, and shrinking the tolerance zone. This research primarily focuses on the investigation of the tolerable production accuracy of small-series and individually manufactured drives. The analysis of load distribution was calculated on the cogs of a planetary gear made with a wire EDM machine. On the other hand, we investigate how production failures affect transmission fluctuations and the backlash of a drive. The novelty of this research is based on the determined analytical equations, which can help engineers to find the right tolerances to a given gear ratio fluctuation.
Highlights
The investigation of the impact of production failures on kinematic features was performed by supposing different levels of production accuracy and tolerance zones created on different cog geometries [1,2,3,4]
The required production accuracy can be estimated for the particular maximum transmission failure in advance by relying on a derived analytical formula based on the maximum transmission fluctuation calculated for a particular module, profile failure, and cog number
We examine the connection between profile failure and transmission fluctuation
Summary
The investigation of the impact of production failures on kinematic features was performed by supposing different levels of production accuracy and tolerance zones created on different cog geometries [1,2,3,4]. Based on the findings of this study, we can determine the required minimum accuracy level for a particular cog geometry, which ensures achieving the predefined maximum level of transmission fluctuation [5,6,7,8]. The required production accuracy can be estimated for the particular maximum transmission failure in advance by relying on a derived analytical formula based on the maximum transmission fluctuation calculated for a particular module, profile failure, and cog number. Definition of the impact of the profile failure on the transmission: The effect of the cycloidal planetary gear profile failure on the transmission is discussed.
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