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The diameter and rotational speed of a job are 100 m and 500 rpm respectively. The high spots (chatter marks) are found at a spacing of 30 deg on the job surface. The chatter frequency is
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- 5 Hz
- 12 Hz
- 100 Hz
- 500 Hz
- 5 Hz
Correct Option: C
Chatter in every 30°.
So 12 chatter mark in one revolution.
| → 500 rpm = | = 8.33 rps | |
| 60 |
⇒ Frequency = 12 × 8.33 = 100 Hz (cycle/sec)
⇒ Frequency = 12 × 8.33 = 100 Hz (cycle/sec)
