Question:
In a CNC machine tool, encoder is used to sense and control:
In a CNC machine tool, encoder is used to sense and control:
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Encoder = position sensing device; Tachometer = speed sensing device.
Updated On: May 22, 2026
- Table position
- Table angular velocity
- Table speed
- Coolant flow
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The Correct Option is A
Solution and Explanation
Concept:
Encoders are feedback devices used in CNC machines for precise motion control.
Step 1: Understand encoder function.
Encoders convert mechanical motion into electrical signals.
Step 2: Types of encoders.
• Rotary encoder → measures angular position
• Linear encoder → measures linear displacement
Step 3: Role in CNC systems.
Encoders provide:
• Real-time position feedback
• High precision control
• Error correction capability
Step 4: Why position is correct answer.
CNC machines rely on accurate positioning of tool/workpiece, hence encoders track position. Final Answer: \[ \boxed{\text{Table position}} \]
Step 1: Understand encoder function.
Encoders convert mechanical motion into electrical signals.
Step 2: Types of encoders.
• Rotary encoder → measures angular position
• Linear encoder → measures linear displacement
Step 3: Role in CNC systems.
Encoders provide:
• Real-time position feedback
• High precision control
• Error correction capability
Step 4: Why position is correct answer.
CNC machines rely on accurate positioning of tool/workpiece, hence encoders track position. Final Answer: \[ \boxed{\text{Table position}} \]
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