In this article, on the first table, I have compared the differences between the mechanism and machine. On the second table, I have compared the differences between the structure and machine.
The difference between Mechanism and Machine are listed below in tabular form.
| S.no |
Mechanism
|
Machine
|
|---|---|---|
| 1 | Mechanism transmits and modifies the motion. | Machine changes the mechanical work. |
| 2 | A mechanism is an outline of the machine to produce define motion between various links or joints Fig. 1). | Machine will have many mechanisms for transmitting the mechanical work or power. |
| 3 | Where kinematic chain is analyzed as a mechanism, no special consideration need to be given to the formed cross-section of the links. | In a machine, cross-section and proportions are to be considered to give stiffness, strength, and clearance to the paths of the machine. |
| 4 | Examples of mechanisms are clocks, typewriter, steering mechanism in a car, etc. | Examples of the machine are slotting, lathe, shaper in the workshop, (Shaper receives mechanical power which is suitably converted to do the work of cutting the metal), etc. |
The difference between a machine and structure are listed below in tabular form.
| S.no |
Structure
|
Machine
|
|---|---|---|
| 1 | In structure, no relative motion exists between its members. | In machine, relative motion exists between its parts. |
| 2 | Members meant for carrying loads are subjected to straining action. | Machine links are meant to transmit motion and forces which are dynamic (both static and kinetic). |
| 3 | Structure serves to modify and transmit forces. | Machine serves to modify and transmit mechanical work. |
| 4 | Examples of structures are roof trusses, bridges, building and machine frames. | Examples of machines are a slotting, shaper, lathe, and screw jack. |
