1 - Komet Scandinavia AB
1 - Komet Scandinavia AB
1 - Komet Scandinavia AB
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JEL® Thread Milling, Drill Thread Milling<br />
1<br />
2<br />
3<br />
Setting<br />
Preparations on tool<br />
Tool clamping<br />
• Correct alignment of clamping screw on clamping surface for<br />
Whistle-Notch adaptor<br />
• Minimise overhang but the cutting sweep for the tool should be<br />
beyond the adaptor<br />
Effect of concentricity on tool life using a solid carbide thread<br />
milling tool as an example<br />
Material: heat treated steel, Rm = 1000 N/mm 2<br />
Size: M10<br />
Cutting values: vc = 100 m/min, fz = 0,06 mm/tooth<br />
1<br />
2<br />
3<br />
thermal expansion or hydr. expansion chuck<br />
HE cyl. with side screw<br />
collet<br />
4<br />
Lf (%)<br />
140<br />
120<br />
100<br />
1<br />
2<br />
3<br />
80<br />
5<br />
60<br />
40<br />
20<br />
6<br />
7<br />
0<br />
5 7,5 10 12,5 15 17,5 20 22,5 25 30<br />
run-out error (µm)<br />
Tool measurement<br />
• Only measure tool length on pre-setter.<br />
• Check concentricity at drill tip resp. thread milling section<br />
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