Understanding Motion Transmission Mechanisms in Machinery

When you need to make a motion transmission, you usually work directly with axes: We support a fixed, usually cylindrical axis, which serves as another element, such as a wheel or a pulley, to turn around. Tree: It's a bar, usually cylindrical, that transmits circular motion. Coupling: The element that allows joining two trees or two axes. Wheel Bearings: These are two completely smooth rim wheels that are in direct contact with one another for moving forward. Gearboxes: We have a minimum of two formed mechanisms, sprockets, constructed in such a way that matches the outgoing motion and transmits circular motion and power. Types of Gears: Cylindrical straight, helical, and bevel. A series of small items would not be possible without the proper transmission of motion and good functioning of the machine. Supports: These are pieces that hold two or more points on the axes and shafts. Bearings: These are formed by two concentric rings with rolling elements. Xavetes: These are pieces that allow elements of transmission rotary motion into a tree or axis, which in turn facilitate the coupling or separation. Tabs: Xavetes are similar to, but allow longitudinal displacement between the connecting pieces. Train Mechanisms: These are combinations of several mechanisms so that one mechanism is driven by a previous element and drives the next. Crank-Crank Mechanism: This transforms a continuous circular motion into a rectilinear movement and the opposite. It consists basically of three elements: The Plunger or Track: It is a generally cylindrical piece that moves within a guide with a rectilinear movement. The Crank: It is an elongated rigid element that allows the articulated union between the piston and crank. The Lever: A lever is fixed by one end of the rotation and the other end of the rod. The Eccentric: These are mechanisms that can transform a circular movement of a shaft into a rectilinear alternate movement but not the reverse. Mechanism Zip: This transforms a circular motion into a rectilinear one, consisting of two components: Pinion: A toothed wheel serving as the driving element, and The Rack: It is considered a primitive diameter toothed wheel, and therefore with the same modulus as the pinion. Endless Screw or Vis: This mechanism allows the coupling between a screw and a toothed wheel, thus transmitting circular movement between axes that cross and form an angle of 90 degrees. The Cross of Malta: It is a mechanism to transform continuous circular motion into intermittent circular motion. Clutches: A mechanism to plug in or unplug a drive shaft or other tree axle to ensure that they maintain the same rotational speed. Brakes: Mechanical energy dissipaters are mechanisms that reduce the speed of a mechanism or machine, if necessary. Reversing Mechanisms: These are mechanisms that can reverse the direction of rotation to make a machine work in both directions, such as epicyclic gears.

Relationship Transmission ----------------------- Gears ----------------------- Per Pole

Chains ----------------------- By Train Mechanisms -----------------------

By Pulleys ----------------------- By Gears -----------------------