Abstract
Stable, chatter-free milling produces a clear tone of a single, dominant frequency. Chatter, on the other hand, produces a harsh tone, often with different frequencies mixed together. If a slot is being cut, the force is close to sinusoidal, and the resulting sound is almost purely 500 Hz. Musicians know that the frequency of the note A above middle C is 440 Hz, which is often used as the basis for tuning instruments with a pitch pipe. Interestingly, the chatter frequency also is an indicator of what spindle speed change should be made to stop the chatter. The microphone should be directional so stray environmental sounds do not interfere with the measurement. The microphone can be inside or outside of the enclosure as long as it can effectively capture the cutting sound.
Original language | English |
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Pages | 24 |
Number of pages | 1 |
Volume | 62 |
No | 12 |
Specialist publication | Cutting Tool Engineering |
State | Published - Dec 2010 |
Externally published | Yes |