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Which issue arises on a CNC lathe when exceeding critical material feed pressure?

A)Increased tool chatter develops then.
B)Thermal expansion rates increase noticeably.
C)Hydraulic servo lag significantly decreases.
D)Coolant filtration becomes excessively efficient.

💡 Explanation

Increased feed pressure, acting as a disturbance input, excites the lathe's structural Compliance. The resulting resonant oscillations cause intense tool chatter, because the Self-Excited Vibration mechanism reinforces itself. Therefore, tool chatter increases catastrophically rather than decreasing thermal-change-outliers or improving filtration from servo operation.

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