The Whitworth quick-return mechanism is formed by inverting which mechanism___________________?
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Answer: A. slider crank mechanism
Explanation
The Whitworth quick return mechanism is a well-known second inversion of the single slider crank chain. This mechanical inversion reverses the fixed link and slider roles to produce unequal forward and return strokes. It provides a slower cutting stroke and a faster return stroke to improve machine tool efficiency. Mechanism inversion involves fixing different links of a kinematic chain to create entirely different machine types. Single slider crank chains produce several classic inversions, including reciprocating engines and hand pumps. Quick return mechanisms are widely utilized in shaping machines and mechanical power presses.
Machining workshops utilize Whitworth mechanisms in shaping machines to minimize non-productive return time. Tool designers rely on quick return linkages to increase productivity during metal cutting operations. Kinematic analysis of this mechanism helps engineers calculate cutting and return velocity ratios. General kinematic chains represent the broad category rather than the specific slider crank inversion source. Five link mechanisms involve more links than the four link single slider crank chain configuration. Roller cam mechanisms use higher pairs rather than being an inversion of the single slider crank chain.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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