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User's Manual TNC 360 (from 259 900-11) - heidenhain

User's Manual TNC 360 (from 259 900-11) - heidenhain

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12 Tables, Overviews, Diagrams<br />

12.4 Diagrams for Machining<br />

Spindle speed S<br />

<strong>TNC</strong> <strong>360</strong><br />

The spindle speed S can be calculated <strong>from</strong> the tool radius R and the<br />

cutting speed v as follows:<br />

S =<br />

V<br />

2 . R . π<br />

Units:<br />

S in rpm<br />

V in mm/min<br />

R in mm<br />

You can read the spindle speed directly <strong>from</strong> the diagram.<br />

Example:<br />

Tool radius R = 15 mm<br />

Cutting speed V = 50000 mm/min<br />

Spindle speed S ≈ 500 rpm<br />

(calculated S = 530 rpm)<br />

Tool radius<br />

R [mm]<br />

Cutting velocity<br />

V [m/min]<br />

12-15

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