- The entering angle should be close to 90 degrees to give more axial cutting forces and less radial/tangential forces
- Use large entering angles and small nose radii to reduce the radial forces, deflection and vibrations
- Small nose radius is ideal for small depths of cut and decrease the risk of vibrations
- Use only one adaptive item between the Silent Tools™ adaptor and the machine tool spindle since further extension will reduce or completely ruin the performance
- Use as light cutting units as possible to improve the dynamic behaviour and effect of the damper
- If possible, use a tapered shank
Productive boring: Two inserts with the same length and diameter to be able to increase feed
Step boring: Additional shim under one of the slides if you want to take a large radial cut
Single-edge boring: Replace one of the slides with a cover to reduce cutting forces and achieve accurate roundness, good surface finish and close tolerances
Damped CoroBore® 820XL:
Machine tools and spindle interfaces
Machine tools and spindle interfaces need to be strong and stable to hold large tools and assemblies as CoroBore® 826D XL. Suitable interfaces are therefore HSK 100 and Coromant Capto® C8 – C10. ISO 50 taper (BIG PLUS included) is too weak for these roughing tools.
The recommended start values for inserts and grades listed at the box shall be followed, but be aware of the many parameters that have to be taken into consideration – such as actual work piece material, spindle interface clamping force, torque capacity at given RPM, net power etc.