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In a CNC machine tool, the function of an interpolator is to generate

1. signal for the lubrication pump during machining
2. error signal for tool radius compensation during machining
3. NC code from the part drawing during post processing
4. reference signal prescribing the shape of the path

Correct answer: reference signal prescribing the shape of the path

Solution

The interpolator in a CNC machine generates a reference signal that defines the precise path the tool should follow, ensuring accurate movement and positioning during machining.

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