Question:
Which one among the following mechanisms is NOT used for transforming rotation to translation in machine tools?
Which one among the following mechanisms is NOT used for transforming rotation to translation in machine tools?
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In machine tools, common mechanisms for converting rotational to linear motion include screw-nut systems, cam-follower systems, and Whitworth mechanisms.
Updated On: Dec 26, 2025
- Screw-nut system
- 4-bevel gear type differential mechanism
- Cam and cam follower system
- Whitworth mechanism
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The Correct Option is B
Solution and Explanation
Each of the mechanisms listed is used for converting rotational motion into linear or translational motion in machine tools:
- Screw-nut system (A): This is a direct mechanism used in machine tools, where a screw thread (rotational motion) is engaged with a nut (translational motion) to convert rotation into linear movement.
- 4-bevel gear type differential mechanism (B): This mechanism is not used for transforming rotation to translation. Instead, it is used in the automotive and mechanical industries for differential gear applications, where the goal is to distribute rotational motion between two rotating parts. It does not convert rotation into linear motion.
- Cam and cam follower system (C): This is a commonly used mechanism in machine tools where rotational motion of the cam is converted into a specific linear motion of the follower, used for controlling the movement of machine components.
- Whitworth mechanism (D): This is a classic mechanism used in machine tools for converting rotary motion into straight-line motion, typically used in shapers and slotters.
Thus, the correct answer is (B), as the 4-bevel gear type differential mechanism is not used for rotation-to-translation conversion.
- Screw-nut system (A): This is a direct mechanism used in machine tools, where a screw thread (rotational motion) is engaged with a nut (translational motion) to convert rotation into linear movement.
- 4-bevel gear type differential mechanism (B): This mechanism is not used for transforming rotation to translation. Instead, it is used in the automotive and mechanical industries for differential gear applications, where the goal is to distribute rotational motion between two rotating parts. It does not convert rotation into linear motion.
- Cam and cam follower system (C): This is a commonly used mechanism in machine tools where rotational motion of the cam is converted into a specific linear motion of the follower, used for controlling the movement of machine components.
- Whitworth mechanism (D): This is a classic mechanism used in machine tools for converting rotary motion into straight-line motion, typically used in shapers and slotters.
Thus, the correct answer is (B), as the 4-bevel gear type differential mechanism is not used for rotation-to-translation conversion.
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