Horn USA
SG3P, the new carbide grade, offers performance when whirling medical screws and also enables shorter cycle times for thread production thanks to higher cutting values, including when processing materials that are difficult to machine. In addition, the combination of an ultra-fine grain carbide powder and the high temperature resistant coating results in high process reliability and better component quality. The carbide grade is available for all standard Horn thread whirling systems. Furthermore, in-house coating enables fast delivery times.
The production of bone screws must necessarily be carried out using a metal cutting process, as the material for this type of screw must not be compressed, as is the case with thread rolling, for example. Titanium, which is mainly used in the human body because of its good biocompatibility, tends to burn if the material is compressed too much. As a machining process, thread whirling has been established for many years. Conventional thread whirling is a process that is mainly used on Swiss-type lathes to manufacture bone screws, but also on a larger scale to produce threaded spindles. In the process, the rapidly rotating whirling head is positioned eccentrically to the workpiece axis in front of the guide bush of the sliding-headstock lathe and the slowly rotating workpiece is guided into the whirling head with an axial feed movement.