Custom Gear Production Case Study: Zero-Roll Bevel Gear for Robot Joint Axes

High-quality gears can also reduce vibrations, leading to a decrease in component wear.

This is a zero-roll bevel gear for robot joint axes. The size is Φ90, made of SCM, and it has undergone carburizing hardening as a heat treatment. Zero-roll bevel gears used in multi-joint robots require two main features: 1. compact size, and 2. lightweight. Therefore, this zero-roll bevel gear is designed with a thin-walled shape of 5mm. When processing gears with such a thin-walled shape, it becomes challenging to maintain dimensional tolerances and geometric tolerances during lathe processing, especially minimizing dimensional changes due to deformation during inner diameter grinding. Additionally, since zero-roll bevel gears for robots require long operating times, it is essential to have durable gears that minimize vibrations. High-quality gears can also suppress vibrations, leading to reduced wear of components and improved durability of the robot itself. Furthermore, by reducing the backlash of gears used in the robot's joints, we can minimize variations in robot movements and enhance the positioning accuracy of the arms. Our company also possesses measuring instruments that accurately measure the dimensions of these high-precision thin-walled gears, which is a notable feature that allows us to maintain quality control of the gears.

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