Turning is one of the most demanding chip-removing processes, where the procedural know-how is particularly present at the point of action.
From a procedural perspective, turning is a kinematically reversed longitudinal turning process, where the workpiece is concentrically guided by a rotating tool, the cutting head. In fact, turning is heavy machining, economically operated in diameter ranges from 20 to 500 – 600 millimeters.
With standard materials, feed rates of up to 18 millimeters per revolution are practiced today, which represents a multiple of what is achievable in conventional turning. With appropriate cassette systems, cutting depths of up to 15 millimeters are achieved. Always at the forefront Turners benefit from the comprehensive know-how from various applications and processes when it comes to achieving performance increases through new coating developments. Furthermore, Boehlerit has all coating technologies in-house. Due to the extremely high feed rates, the greatest challenges arise from the necessary layer adhesion. Significantly more than in conventional turning, the application-related execution of the cutting geometries comes to the forefront in turning. In Boehlerit's portfolio, users find the widest geometry program in standard versions, tailored for various material classes.
Currently, simulation software is used to develop new plate geometries to recognize chip flow, the resulting temperatures, and forces, in order to achieve the best possible results. Many parameters are input into the software to obtain a result as close to reality as possible. The interplay of cutting material, coating geometry, and cutting edge preparation is usually dependent on the machine and the material to be processed. The application is constantly changing, as new materials to be processed are always being developed, and due to cost savings, the dimensions, especially in smaller diameters, are minimized before the turning process. This aspect brings some challenges, especially in roundness and surface quality. In larger diameters, this is only partially possible due to the manufacturing process, which is why tandem or trio turning systems with large round plates are still used for large material removal.
Current examples of innovative solutions for processing new materials or for significant performance increases in turning include the development of new indexable insert types for machining carbon steels, the nanotechnology of the universal turning type BCP25P, or the new types BCP05P; BCP10P, BCP15P, and BCP35P. Furthermore, we offer grade solutions for non-ferrous metals such as aluminum and copper. More information can be found in our new turning catalog.
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