FUNCTION OF TOOL FEATURES FOR TURNING
RADIUS
Radius effects the cutting edge strength and finished surface. In general, a corner radius 2– 3 times the feed is recommended.
Effects of Corner Radius
- Increasing the corner radius improves the
surface finish.
- Increasing the corner radius improves cutting edge strength.
- Increasing the corner radius too much increases the cutting resistance and causes chattering.
- Increasing the corner radius decreases flank and rake wear.
- Increasing the corner radius too much results in poor chip control.
When to Decrease Corner Radius |
- Finishing with small depth of cut.
- Thin, long workpieces.
- When the machine has poor rigidity.
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When to Increase Corner Radius |
- When the cutting edge strength is required such as in interrupted cutting and uncut surface cutting.
- When roughing a workpiece with large diameter.
- When the machine has high rigidity.
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Corner Radius and Chip Control Range
- Note)
- Please refer to page P004 for chip shapes (A, B, C, D, E).