Mechanisms
Mechanisms consist of rigid bodies connected by joints to create desired motions or force transmissions, playing a crucial role in machines. Various types of joints and mechanisms serve different functions, such as motion generation and force transmission. Special-purpose mechanisms like the quick return mechanism and universal joint demonstrate their applications in machinery and automotive systems.
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What we have learnt
- A mechanism is a collection of rigid bodies connected by joints for motion or force transmission.
- Mechanisms can be classified based on their function, constraints, or type of joint.
- Common mechanisms include four-bar and slider-crank mechanisms, each with several inversions for different applications.
Key Concepts
- -- Mechanism
- A combination of rigid bodies (links) connected by joints to create desired motions or facilitate force transmission.
- -- Joint Types
- Includes lower pairs (e.g., revolute, prismatic joints) and higher pairs (e.g., cam and follower) based on the nature of their contact.
- -- FourBar Mechanism
- The simplest closed-chain mechanism that converts rotary motion into oscillatory or reciprocating motion.
- -- Quick Return Mechanism
- Mechanisms used in shaping and slotting machines that allows a faster return stroke than the cutting stroke.
- -- Universal Joint
- A joint that allows the transmission of torque between shafts at varying angles, commonly found in automotive drive shafts.
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