For steels
For stainless steels
For cast iron
For non-ferrous metal
For difficult to cut material
For hardened material
* It is recommended to set the depth of cut of the final pass to 0.05mm─0.025mm.
Large cutting depths can cause vibration, leading to a poor surface finish.
Formulae to calculate infeed for each pass in a reduced series.
Example:- M12×1.0 5 passes modified 1°-3°
External Threading | Internal Threading |
---|---|
G00 Z = 5.0 X = 14.0 G92 U─4.34 Z─13.0 F1.0 G00 W─0.07 G92 U─4.64 Z─13.0 F1.0 G00 W─0.06 G92 U─4.88 Z─13.0 F1.0 G00 W─0.05 G92 U─5.08 Z─13.0 F1.0 G00 W─0.03 G92 U─5.20 Z─13.0 F1.0 G00 |
G00 Z = 5.0 X = 10.0 G92 U4.34 Z─13.0 F1.0 G00 W─0.07 G92 U4.64 Z─13.0 F1.0 G00 W─0.05 G92 U4.84 Z─13.0 F1.0 G00 W─0.04 G92 U5.02 Z─13.0 F1.0 G00 W─0.03 G92 U5.14 Z─13.0 F1.0 G00 |
Note) · Tool life and surface finish accuracy can be increased by changing the threading method from flank infeed to modified flank infeed.
· Chip control can be improved by increasing the cutting depth in the later half of passes.
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For steels
For stainless steels
For cast iron
For non-ferrous metal
For difficult to cut material
For hardened material
For finish cutting
For medium cutting
For rough cutting