CLASSES OF MECHANICAL JOINTS

Mechanical joints are elements that serve to maintain the relative position between several pieces, that is, they limit the movement between the pieces to be joined (linear and / or rotational movement) and their degrees of freedom.

The pieces are joined by auxiliary elements, generally metallic, called fittings that are responsible for transmitting the forces. They are the most widely used today as they improve the performance of traditional unions.

In mechanical joints, an excess of metal elements should be avoided, since the joint will be better the less metal parts it contains and the simpler its execution.

TYPES OF JOINTS USED IN THE INDUSTRIAL SECTOR

SCREWED JOINTS

As its name suggests, the connection between the different components is made by using screws. The main characteristic of this type of joint is that they are removable, that is, the joint is reversible and it will not be necessary to destroy any part of the joint.

WELDED JOINTS

Welded joints result in a rigid joint between two or more components. Normally the joining process is carried out by applying heat to two components of the same or similar materials, in addition, material can be applied to the joint or not.

The heat causes the materials to melt, joining the different parts and resulting in a weld bead. The thickness of the bead will depend on the thicknesses of the components being joined. During the execution process the materials must be protected from atmospheric gases. There are different types of welding depending on how the materials fuse.

The main welded joints used in the industrial sector are:

• Arc welding.
• Power welding.
• Gas welding.
• Spot welding.

JOINTS BY INTERFERENCE

Interference joints consist of joining two components, where one is inserted into the other and where the dimensions of the housing are smaller than the dimensions of the insertion element

To make the union, the housing must be heated, in order to expand it. In this way the insertion element can be inserted into the housing. Once cool, the housing will exert pressure on the insert, leaving both components fixed. In this way, with the pressure exerted between the surfaces and the friction between them, the joint will be defined

OTHER KINDS OF MECHANICAL JOINTS

RIGID, FIXED JOINTS.

Fixed joints are those joints whose joint elements are impossible to separate without causing any damage or breakage in any of them.

RIGID, FIXED, WELDED JOINTS.

RIGID, FIXED, NAILED JOINTS.

Structural frames made of solid wood and boards require that the board-wood joints can maintain adequate mechanical strength during the time and climatic conditions in which they must serve.

Bolted joints are differentiated according to the type of joint construction, as well as according to their function..

RIGID JOINTS, REMOVABLE, VETTED NACHAS

Key joints are weldable joints, in which the parts that must perform a rotary movement are joined together, through form-fitting joining elements; these are the keys.

RIGID, REMOVABLE JOINTS WITH PINS

Dowel joints differ according to the role of the dowels in joining loose parts.

MOBILE, ROTATING JOINTS

The mobile connection elements are parts of pieces, complex pieces or sub-assemblies designed to prevent some movements and favor others.

MOBILE, SLIDING JOINTS

They are those in which one of the two pieces is fixed, and the other slides through it, with lubricant or the help of a third element.

The leaf springs are made up of a set of sheets or sheets of special steel for springs, joined by means of clamps that allow sliding between the sheets when they are deformed by the weight they support. The upper sheet, called the master sheet, is curved at its ends to form eyes in which bronze bushings are mounted to be attached to the frame support by means of bolts or bolts.

MOBILE, FLEXIBLE JOINTS

There are several types of mechanical joints available to meet the most specific need required by different users, each of the designs provides adequate clamping force to the mechanical joints without diminishing the integrity of the conveyor frame.