Helical gears for transmissions for electric vehicles e-axle

Evaluation of tooth surface characteristics is possible with GDA software! It focuses on evaluating tooth surface properties that could not be assessed with conventional gear measuring machines.

This is a product example of gears used as a reduction gear for electric vehicles' e-axles. Specifically, these are helical gears used in transmissions. The gears rotate at high speeds, such as 15,000 rpm, requiring high quality. Due to the need for precise evaluation of the tooth surface shape, we conducted an assessment of the tooth surface flatness using the GDA software we possess. We feel that this evaluation could only be performed by our company, which specializes in gear manufacturing, and it was a measurement that would be difficult for other companies to achieve. As a result of the measurements taken with the GDA, it was found that changing the processing conditions could yield higher manufacturing precision. Additionally, we have measuring equipment capable of maintaining and managing tooth profile corrections within a few micrometers, allowing us to manufacture while appropriately maintaining and managing the process. Furthermore, we proposed that by polishing the tooth surface to a mirror finish, we could reduce tooth surface damage, vibration, and noise. In fact, by focusing the evaluation on tooth surface characteristics that could not be assessed with previous gear measuring machines, we have been able to evaluate the effectiveness of polishing grinding and low-noise shifts.

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