In recent years, the automotive industry has been demanding enhanced fuel efficiency and reduced noise, and in the trend of the increase in the number of stages for transmissions, the mass production processing of high-precision gears remains an issue. Conventionally, the manufacturing of gears was completed in the heat treatment process after gear green finishing. Lately, gear grinding is conducted after heat treatment to ensure high precision, and thus the reduction of production costs is also an issue. Using a high-speed spindle and our proprietary technology, we established a gear processing method with higher-precision and higher-efficiency compared with the conventional method, which will be described in this report.
