Development of a Tool System for Internal Contouring of Small Diameters

Both conventional processes such as internal turning and special processes such as bottle boring do not allow complex internal machining of small bores at large depths. For this reason, a new type of tool system is being developed for internal contouring of small diameters even at large machining depths. In a first development step, preliminary investigations of internal machining by means of internal turning were carried out to characterize the existing limits and to select suitable cutting inserts and cutting parameters. This was followed by the development, design and manufacture of the tool system, which was initially designed for guide bores with a diameter of D = 14 mm and a length-to-diameter ratio > 20. The development of the tool head was implemented using finite element analyses.