Sandvik Coromant Silent tools - application guide - Manual (Page 68)

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3. Turning
Summary: How to avoid vibration
Increase static stiffness
• Check the clamping and set-up
• Use Coromant Capto or split holder
• Minimum tool overhang and maximized diameter
• Material reinforcement (boring bars)
Increase dynamic stiffness
• Small insert point angle
• Use dampened tools
• As low weight in front of the cutting tool as possible
Reduce the cutting forces
• Use a positive cutting angle
• Use a positive insert geometry with small ER
Avoid deflection
• Change the direction of the cutting force from radial to axial
• Entering angle close to 90° (lead angle 0°)
• Depth of cut bigger than nose radius
Enable chip control
• Increase coolant flow
• Clearance between tool and workpiece
• Check that all chips have been evacuated
Note!
Be sure not to overload the dampened boring bar. Maximum load is
marked on the products and you can also use the calculator avail-
able at www.sandvik.coromant.com/knowledge to find maximum
load.