1 - Komet Scandinavia AB
1 - Komet Scandinavia AB
1 - Komet Scandinavia AB
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JEL® Thread Milling, Drill Thread Milling<br />
Milling method for different materials<br />
Cast aluminium<br />
• Can be carried out without peck cycle<br />
• For tools with internal coolant there is no need for chip clearance<br />
after boring.<br />
Setting<br />
1<br />
Long chipping aluminium<br />
• At least once peck cycle<br />
• Radial division of cut may be necessary if a thread with very low<br />
burring is required<br />
2<br />
Grey cast iron<br />
• No chip clearance<br />
• Conventional thread milling in one path. Over 2×D two pathes<br />
may be required.<br />
3<br />
Special cases<br />
Through hole<br />
• For tool with internal coolant, switch to external coolant for milling<br />
• To reduce side load, preferably work with milling section on<br />
shank side<br />
4<br />
5<br />
Angled bore exit / cutting through cross holes<br />
• Reduce bore feed rate at bore exit by 60%<br />
6<br />
Cavities (inclusions) in cast materials<br />
• Reduce bore feed rate by 40-60%<br />
7<br />
8<br />
Important: See page 162 for more application details and<br />
safety notes!<br />
155<br />
9
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