What type of mechanism is an Oldham coupling ____________________?
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Answer: B. third inversion of double slider crank chain
Explanation
An Oldham coupling is specifically classified as the third inversion of a double slider-crank chain. It contains two sliding slots and a central floating disk to connect intersecting shafts. This inversion allows the transmission of torque between parallel shafts with small misalignments. Kinematic chain inversions are created by fixing different links within the same mechanism. A double slider-crank chain consists of two sliding pairs and two turning pairs. John Oldham invented this coupling in the nineteenth century for paddle steamer engines.
Machinery misalignment compensation relies on Oldham couplings to prevent excessive bearing wear. Servo motor drives use these couplings to transmit smooth rotational velocity despite offset shafts. Manufacturing equipment often requires flexible shaft connections to accommodate thermal expansion. Option A refers to a different mechanism inversion within the double slider-crank family. Option C involves single slider-crank chains instead of double slider-crank configurations. Option D incorrectly references single slider-crank chains instead of double slider types.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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