Word from cutting tool company Sandvik Coromant (sandvik.coromant.com/en-us/industrysolutions/automotive) is that itÂ has developed a new indexableÂ CBN insert tool that lends itself to the production of transmission components.
The companyâs CB7015 grade is particularly good for hard turning case-hardened steels (those 58-65 HRc).
The tool uses whatâs called the âSafe-Lockâ clamping system.Â Combined with the wear-resistant ceramic binder, this means thatÂ the insert can also be used for dryÂ machining operations.
The CBN tool is available with standard corner radii and wiper inserts. Sandvik also offers its âXcelâ version geometry that provides higher finish quality with increased speeds: roughness grades far below 3.2 Âµm can consistently be achieved. With Xcel geometries and feeds of 0.011 in., even roughness grades of 1 Âµm are possible. In addition, the Xcel insert, with up to 8 cutting edges, enables shorter production times and reduced tool costs per component.