Article From: 12/1/2007 Production Machining, Lori Beckman, Managing Editor
Click Image to Enlarge
The carbide tipped 14" diameter blade is precision machined for uniform thickness to pass through the blade guides at speeds ranging from 1,535 to 4,100 rpm with a kerf of slightly over 1/16".
Seco Tools Inc.'s coated insert, CBN160C, is particularly suited for heavy interrupted and high-speed operations in finishing case hardened steel. The insert was designed to increase speed yet lower production costs.
The insert features a Ti(Si)N "C" coating, which improves wear resistance and increases tool life so that higher speeds and feeds can be achieved, according to the company. Downtime is also reduced as there is less need to inspect tool wear and fewer indexing/tool changes are required.
The insert is available in single and multi-tapped brazed formats and all typical styles. With its near diamond hardness, CBN 160C is a specific balance between CBN content, grain size, binder, coating and edge micro geometry making it very well-suited for high speed and heavy interrupted machining of case-hardened steels to a degree where grinding can be virtually eliminated.
