The Royal Spanish Academy ( RAE ) does not recognize the term cupla in its dictionary. The concept, anyway, is used in different ways in our language.
The pair of forces is known as a couple: a system that is developed with two forces that are parallel and have the same module or intensity, although opposite directions . The application of the couple to an object generates a torsion or rotation .
According to their values and the distance that exists between the parallel forces, the torsion or rotation has a different magnitude. The moment of a couple , in this framework, is a vector-type magnitude whose module is the product of one of the two forces by the distance between them.
It can be said that a couple, in short, is a pair of forces, which are applied to the same body and which have the same intensity but opposite directions. This causes them to generate the rotation of the body in question.
In the field of plumbing , on the other hand, the piece used to join two pipes on the outside is called a coupler. The couplings allow the pipes to be connected externally, making the water or gas circulate inside them without leaks or leaks.
In the field of automotive mechanics, torque or motor coupling is the measure of force that makes the crankshaft rotate. The crankshaft, for its part, is the name of a part of the engine of certain machines, such as the car, which is made up of several elbows, each of them adjusted to a connecting rod and an axle; Its function is to transform the rectilinear movement of the pistons into rotation, or just the opposite.
It is a rotational couple, and that is why it is composed of two forces: the first is expansive, and is exerted by the gases when combustion takes place in the head of the piston (this is measured in kilograms); The second is the extension of the crank pin (measured in meters). For this reason, the value of this property is given in kilograms , in relation to the number of engine revolutions.
At this number of revolutions per minute, the highest value of the expansive force exerted by the gases is generated, which pushes the piston and this, through the connecting rod, makes the crankshaft rotate. The greater the torque, the better the car's performance will be in sudden accelerations, towing and climbing. Currently, to measure this pair of magnitudes the unit Newton-meter ( Nm ) is used, and the relationship 1 kg = 10 Nm has been established.
Safety components that are used to prevent certain breakages and reduce machine downtime are known as manual torque limiters . Its action is similar to that of a fuse when a mechanical overload occurs, since it disconnects the input from the output. It is very easy to install, both in line and in parallel axis coupling.
As its name indicates, this safety element must be adjusted manually, using a nut located in the center (in the case of small and medium models) or several screws (in the largest torque limiters). ). Depending on the type of assembly, it is possible to install it with a transmission between parallel axles or by joining coaxial axles.
For baking , a cupla is an adapter that is used in the nozzles of the bags. A tricolor couplet, for example, makes it possible to apply three different products , something very useful for decorating a cake (a cake) or a cake with different colors.