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Secondary II • 9mo.

What is the difference between the mechanisms of transformation and transmission of movement? I don’t understand.

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  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

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    Team Alloprof • 9mo.

    Thank you for your question!

    Several different technical objects are made up of parts that play a role in the functioning or assembly of objects called "organs". Sometimes the movement of an organ causes the movement of another.

    More precisely, the movement of a driving member can cause the movement of a driven member.

    There are three types of mechanical movements:

    • Rectilinear translational motion: moving a certain distance in a straight line

    • Rotational motion: turning around an axis

    • Helical motion: turning and moving along an axis

    When the motor member drives the movement of a driven member which is of the same type (for example, a rectilinear translational movement which causes another rectilinear translational movement), it is a transmission of the movement. The driving member and the driven member (and the intermediate members, if any) can be referred to as part of a movement transmission mechanism.

    When the motor member drives the movement of a driven member which is not of the same type (for example, a rectilinear translational movement which causes a rotational movement), this is a transformation of the movement. The driving organ and the driven organ (and the intermediate organs, if any) can be designated as part of a movement transformation mechanism.

    Here are some examples of motion transmission mechanisms:

    • Toothed wheels (rotation to rotation)

    s1436i16.png

    • Pulley and belts (rotation to rotation)

    s1436i13.jpg

    Here are some examples of motion transformation mechanisms:

    • Cam and roller (rotation to rectilinear translation)

    s1437i18-1.gif

    • Screw and nut (translational rotation)

    s1437i14.jpg

    Thank you for your question!