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Which outcome occurs on a CNC lathe when the toolpath exceeds rapid traverse limits?

A)Spindle speed reduction occurs
B)Machine produces a trajectory error
C)Ball screw vibration increases
D)Coolant flow rate surges

💡 Explanation

Trajectory error results because exceeding the look-ahead (interpolation) capacity stalls servomechanism motion at maximum acceleration with velocity errors. Therefore significant deviation happens, rather than any adjustments, because of position lag due to inadequate servo performance.

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