What is interference fit?
interference adaptation, also called pressing fit or shrink fit, is the type of connection method used to connect parts to products or structures. In this type of joint they have two connected parts of slightly different sizes and this mismatch holds pieces together. This connection method is common in many production and assembly processes. The location of the interference is called the joint and it is an area where two parts are joined, where two parts are connected. Because the articular location of the first part is slightly larger than the location of the second part, it creates an interference adaptation with the connection of these two parts. Because the joints of both parts are not the same size, they must be pressed by force. In fact, it is friction created by disturbing two parts at the joint that holds both pieces together. One of the advantages of the interference adaptation is that many of the parts are required by adhesives or screws. Changes in the amount of interference are made by making dimensions where both parts are connected larger or smaller. The amount of interference between the parts together with the material of the part is largely dictated by the assembly method that will be used.
If the amount of interference between the two parts is not so large or their materials are flexible, then the parts can be easily pressed manually. As the amount of interference increases or the material becomes less supple, more force will be required, join them together. Large connecting forces may require a hydraulic press or some type of machine that creates a mechanical advantage, such as the printing of Arbor, forcing one part to another.
Another way to create interference includes thermal expansion. Fixed materials generally expand when they grow warmer and reduce their temperature. As a result, parts can be heated or cooled before assembly so that they can easily go together. The parts are then returned to the normal temperature and create a link between them. Good PRAx with this method is to ensure that the pieces to be connected are made of the same or similar material to reduce and reduce the unison when temperature changes. Because different materials have different characteristics of thermal expansion and contractions, changes in temperature can cause the binding to become too tight or too relaxed.
Common interference adaptation applications include inserting different shapes into the holes and shafts into the bearings. Incorrect customization can lead to incorrect alignment between parts, slipping, or in the case of moving parts, excess vibration. Correct adaptation is particularly critical in the case of the shaft to the bearing or steam; This configuration is used many times to transmit torque and if the connection is not correct, the device will not work properly.