Sandvik Coromant Silent tools - application guide - Manual (Page 50)

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3. Turning
Depth of cut, AP, and feed, f
n
The combination of AP and f
n
is important to achieve the best
possible chip areas. Two rules of thumb:
• Program AP larger than the nose radius
• Program for an f
n
that is a minimum of 25% of the nose radius,
depending on what surface finish is required
One of the first things to consider if you experience vibration when
machining with long overhangs is to increase the feed and a
second remedy, change the cutting speed. Usually, the best results
are achieved with higher cutting speed.
Chip area
• If the chip area is too large, the cutting forces are too large
• If the chip area is too small, the friction between tool and work-
piece is too great and a rubbing effect can occur