The pneumatic rivet is a device whose main purpose is to connect parts (if it is impossible to use another method). Rivets provide high-quality fastening, which is highly resistant to vibration loads and tears.
Tool types
Professional pneumatic riveter for exhaust fasteners belongs to the category of expensive and powerful tools. There are several types of equipment, divided by the principle of action:
- Battery devices do not depend on power supply, as they work from an autonomous current source.
- Pneumohydraulic have a mechanism of action based on the translational movement of the threaded rod moving due to the working piston.
- Pneumatic tools run on compressed air. Among the shortcomings, it is worth noting a narrow area of use due to the presence of a mandatory addition in the form of a compressor. Modern pneumatic riveter is most often represented by industrial equipment, and operation in various conditions is possible, thanks to its compact dimensions, slightly exceeding the dimensions of mechanical models.
- Manual in the process of pressure on the fasteners exert force on the basis of the lever principle. The device looks similar to conventional pliers. There are two-handed and one-handed options that use rivets of different sizes.
Pneumatic riveter: principle of operation
The connection is made by pressing the rivet into the installed hole by deforming its edge. In this case, the surface of the internal thread should remain intact. Using the device, it is possible to fix plastic sheets and metal elements with materials having a different basis. Of particular importance is the washer, which ensures an even distribution of the force applied during operation.
Varieties of fasteners
Threaded rivets are classified according to the material of manufacture and can be steel, copper or aluminum. In addition, there are differences in diameter and length. The tool for work should be selected in accordance with these parameters. For example, steel fasteners are not suitable for mechanical equipment, since it provides a high-quality connection only with the help of aluminum and copper elements.
What determines the reliability of the connection
Threaded rivets, in addition to the standard function, are distinguished by the possibility of using bolt fasteners for fastened materials, which the usual analogs cannot boast of. They are also used on painted walls and other visible structural elements.
The quality of the connection is primarily ensured by the diametrical size of the fasteners. With its increase, the reliability of fastening and resistance to loads increase. At the same time, this can create some inconvenience associated with the complexity of carrying out work with large elements and the need to use professional tools. Pneumatic riveter for threaded elements provides the connection of materials with a thickness in the range of 0.2-5 mm using a variety of fasteners, which can have countersunk, standard or decorative heads.
Action algorithm
Work with this tool has its own characteristics. First of all, it is necessary to choose rivets of a suitable size. The category of universal includes elements with a cross section of not more than 4 mm. Fastening with a large diameter requires the use of a pneumohydraulic or pneumatic mechanism.
In accordance with the size of the rivet, holes are made in the material. Surface countersinking is used when working with countersunk elements to ensure they are completely hidden. A suitable threaded rod is mounted on the fixture, then the fasteners are put on. The nozzle must be tightly fixed to prevent unauthorized unscrewing in the process.
The rivet is fully inserted into the hole, while the plane of the material and the upper part of the element must have a tight connection. The pneumatic rivet for rivets is perpendicular to the sheets of material, then you need to strongly press on its handles. At this time, the rod begins to move in the tool and exert a mechanical effect, which ensures the deformation of the fastener head.
After completing the installation of the element, the rod is unscrewed and the correspondence of the location of the rivet is checked: there should be no damage to the thread, as well as empty spaces and distortions.
How to remove fasteners
In some cases, it becomes necessary to remove excess or incorrectly positioned elements. It is possible to use two techniques: edge grinding and drilling. In the first case, a drill is used, then the part is knocked out of the mounting hole. A drill with a size exceeding the internal parameters of the thread is used for drilling. Subsequently, the element is divided into two parts: a thrust piece and an edge.
It is worth paying attention to the competent selection of a rivet, in particular, its length. It should be calculated in accordance with the parameters of the fixture itself and the thickness of the material used. For example, provided that there is a material 2 mm thick and an element for connecting with a size of 4 mm, the rivet should have a length within 6 mm. In this case, there will be enough space in the socket for fastening the bolt, which will ensure high-quality fixation.
Features
Kraftool pneumatic riveter is a powerful and convenient device, but, despite this, does not have wide distribution. Equipment of this type can not be found in every store, and fasteners are even more difficult to pick up. Recently, there has been an increase in the demand for the tool, and all thanks to the possibility of convenient installation of energy meters on thin-walled structures and high-quality fixing of numbers on cars. The fastening is strong enough and can compete with welding due to the low probability of simultaneous destruction of rivets.
During operation, certain parameters must be taken into account:
- Dimensions of the elements used. All fasteners have different lengths and thicknesses, respectively, a large number of special heads in the tool allows it to be classified as universal.
- The properties of the stroke indicate the maximum possible power in the process of connecting the elements.
- With an increase in retraction force, it is possible to work with larger rivets. The described devices (such as the pneumatic Scorpio rivet), usually have a working pressure of 8 atm.
What you need to know
Previously, when there was no such tool as a pneumatic rivet, the following algorithm of actions was used as one of the fastening methods: a twig inserted into the hole together with two rivet elements was flared to produce hats of non-separable parts. When using special bolts, the element was pressed into the hole, and the edge was flared by mounting on the anvil.
This technique was widely used, especially in the construction of tower structures and bridges. But at the same time, difficulties arose in the form of the complexity of access to both sides of the product and the overall complexity of the work.
Pneumatic riveter Scorpio YU RV101K has many advantages in use, among which are the following:
- Fasteners have a lower cost compared to screw elements.
- Rivets spread out under tensile load, which prevents their destruction.
- Installation of fasteners is quick and does not require special skills.