Hard turning is an accepted process finishing hardened workpiece materials. Compared with other processing techniques, it has a flexible, efficient and good economy. Since it has been published, along with the machine manufacturer to assist, improve pcbn new grades of development and tool manufacturing process, hard turning continue to receive significant performance increase.

Hard drive unit is easy turning, and herein car synchromesh gears idea to use a different tool for processing. The number of different processing of the part highlighted the idea of the strengths and limitations of different uses.

Today you can choose from a few years ago even though the number of hard turning options are fairly limited, but will be as shown herein lot. Therefore, process should focus on the needs of users, the machine's technical design based on the user's production, which is very important.