Sharpening of saw blades: principles and angles of sharpening

Sharpening of saw blades is necessary for any tool used for woodworking. It is produced in the event of a reduction in cutting quality and requires compliance with the basic rules, since the lifetime of the saw affects the literacy of the grinding performance.

rules

• Pliers can act as a tool for bending, but in this case it is necessary to monitor the position of all the teeth, otherwise the disc will be spoiled and will not provide proper processing of wood.
• During the work, the holding bars must be snug against the disc, and the surface should remain unchanged.
• To ensure that the sharpening of the saw blades was carried out correctly, the location of the part must ensure that all teeth are freely visible.
• As the main tool is usually a machine, but sometimes there is a need to remove the disk and fix it in the vice.
• Before changing the angle, a suitable tool is prepared in advance and marks are placed.

Preparation

Before starting work, it is necessary to de-energize the tool, the part of which has lost its previous characteristics. The disc is tightly fixed using special bars, which are placed on both sides of it. All the teeth are marked on the canvas, while in the process equal efforts are applied and the same number of movements of the tool. So you can produce a high-quality, even disk processing.

The part is installed back after reaching the required view and checking the sharpening angles. Next, you need to make a trial cut on the machine and make sure of the quality of the work done. It is important that all the teeth are placed on the same plane, otherwise the movement of the bar will be uneven, and the work of the machine will be accompanied by a characteristic noise. It is also possible in case some teeth require adjustments.

Wiring

If sharpening the saw blades is done by yourself, it is worth remembering about the edge groove, in which all the teeth are gradually bent in different directions, but the distance between them remains the same. These actions can be performed using a special tool called wiring, it provides uniform bending in the middle of all the elements. After carrying out such a procedure, the saw will get a more free stroke, and the width of the cut will be greater.

Taking into account the fact that the propyl is produced not by the disc itself, but by its edges that gradually remove the layers of wood, it becomes clear that with increasing divorce of the teeth, the probability of jamming decreases, and the propyl increases in width. It should be noted that in this case, more effort is required to operate the tool. In the absence of special devices, many people use a wrench for the teeth, but this technique has many limitations and is not suitable for all saws.

The kind of wiring is primarily affected by the wood species, which will subsequently be processed. For example, to get a smooth cut without any drawbacks and protrusions on the soft rock requires a large wiring. It is desirable that the teeth are deflected to the selected side by 5-10 mm. Sharpening of the saw blades on the tree is made only after the wiring is done, otherwise the teeth will be unusable due to the deformation that has arisen.

Angle Selection

The purpose of the saw, that is, the type of suitable materials, determines the required grinding angles. A relatively large value is used for the elements of longitudinal sawing (within 25 degrees), for saws of lateral processing this parameter is 5-10 degrees. The grinding angle of saw blades of universal type (used for longitudinal and transverse sawing) is 15 degrees.

In addition to the processing direction, the density of the material to be sawn should also be taken into account. With decreasing density, the value of the anterior and posterior corners increases, that is, the tooth becomes more pointed. The parameter of the front corner can also be negative, this is necessary for work with plastic and non-ferrous metal.

When sharpening of saw blades is required

To find out when to start a circular saw, you can pick up a small detail, the density and quality of which corresponds to the materials used for the work. Next, you need to saw a bar. The disk does not require processing in the event that a smooth cut is formed, the saw goes easily and does not make noise during operation. In the reverse situation, you need to sharpen the disc at home or, in the absence of a special tool, contact the workshop. It should be noted that this process should be carried out in accordance with all the rules and taking into account safety techniques. Before this, you need to determine the required angle and shape of the teeth. There are also additional factors that indicate the need for sharpening:

• In the process of wood processing, the smell of burning is felt and the deposit is formed on the cut itself;
• The motor starts to overheat and promotes the heating of the casing of the device;
• It takes a lot of effort to move the disk.

What you need to know

Sharpening of saw blades (SPB) is now produced by many companies, but not all are able to provide a quality result. The problem is that this process requires the equipping with expensive tools and knowledge of all aspects and features of such painstaking processing. Masters should have experience in this field and observe all the nuances and stages of work. For example, the angle of sharpening is affected not only by the tool used, but also by the disc itself, in particular, the material taken as a basis for production.

The saw blade must have an angle corresponding to the types of surfaces used for work. The equipment can work with values within 45 degrees. A special role is played by observing the specified angle of sharpening, suitable for processing a certain material. Only when all recommendations and work rules are taken into account can the lifetime of the cutting element be extended.

Sharpening of carbide saw blades

The processing of such elements has several complex steps and is performed on special equipment, which is a machine for sharpening with advanced functionality. In particular, it must provide cooling of the treated zone in the form of a special composition and work in automatic mode. Such equipment, as a rule, is equipped with a controller designed to detect the number of teeth and to grind the disc itself with the selected number of cycles. Also on the machines there is a magnet necessary to secure the saw and prevent its movement during processing. For grinding, a grinding wheel is used, on the surface of which diamond deposition is applied. The machine for sharpening the saw blades, in addition, is equipped with an electric motor for automated movement of the saw and processing on the required site.

Equipment for processing saws with diamond dusting

Such machines should have a structure, supplemented with a cast reliable base. This ensures high precision of machining of disks, which are made of materials with special strength. They also have a lock with a high level of slope. The base is supplemented with special rubber elements that reduce vibration, which can worsen the quality of the work performed. Due to this addition, the noise level arising during processing is reduced. The adjustment on the equipment is made manually, while the diamond-coated discs used for sharpening the saws increase the quality of the result and extend the life of the tool.

What to consider when processing

The principle of the disk for sharpening has its own peculiarities, as well as its structural execution. At the heart of the materials for its production lie the compounds of nitrogen and boron, which increase not only the accuracy of processing, but also the resistance to high temperatures that characterize the process itself. It should be borne in mind that the wheels have different diameters and are suitable for different tools and material types, so you need to carefully select the necessary model in accordance with the available tool to be processed.

Features

Sharpening of saw blades in Moscow is made on different equipment. Processing can be carried out semi-automatically, that is, without the participation of a person, the task of masters is only the installation of parts on the machine and their removal. Most often there is a kind of equipment on which the sharpening is done manually. It is easy to adjust due to the equipment in the form of locking levers, and exact fixation of the required angle of sharpening is done with the help of special fasteners. The main feature is the linear feeding method. This is how high-quality processing of both the rear and front teeth is achieved. Thanks to the additional function of the machines, consisting of diagonal edge sharpening, the operation of the saw is simplified and the quality of the cut is improved. Choosing a disk for sharpening saw chains, first of all, you need to take into account the degree of granularity. Products with fine grain provide minimal processing of chains, while coarse grains remove a sufficient layer of material. The cost of such disks is directly affected by the manufacturer's reputation, the quality of the base and the variety of the product.