Saw blade sharpening is essential for any tool used in woodworking. It is performed in case of a decrease in the quality of the cut and requires compliance with the basic rules, since the literacy of sharpening also affects the period of operation of the saw.
Rules
- Pliers can act as a bending tool, but in this case, it is necessary to monitor the position of all the teeth, otherwise the disc will be damaged and will not provide proper processing of the wood.
- During the work, the retaining bars should fit snugly against the disc, and the surface should remain in the same position.
- In order for saw blades to be sharpened correctly, the position of the workpiece must allow free viewing of all teeth.
- The main tool is usually a machine, but sometimes it becomes necessary to remove the disk and secure it in a vise.
- Before changing the angle, a suitable tool is prepared and marks are made.
Preparation
Before starting work, it is necessary to de-energize the tool, the part of which has lost its previous characteristics. The disk is tightly fixed with the help of special bars, which are placed on both sides of it. All teeth are marked on the blade, with equal forces and an identical number of tool movements being applied in the process. So you can produce high-quality, uniform disc processing.
The part is installed back after achieving the desired look and checking the sharpening angles. Next, you need to make a test cut on the machine and make sure the quality of the work performed. It is important that all the teeth are placed on the same plane, otherwise the movement of the bar will be uneven, and the operation of the machine will be accompanied by a characteristic noise. It is also possible if some teeth require adjustment.
Wiring
If you sharpen saw blades yourself, you should remember about the edge setting, in which all the teeth gradually bend in different directions, but the distance between them remains the same. These actions can be performed using a special tool called wiring, it provides a uniform bend in the middle of all elements. After carrying out such a procedure, the saw will move more freely, and the width of the cut will become larger.
Taking into account the fact that the cut is made not by the disc itself, but by its edges, which gradually remove layers of wood, it becomes clear that with an increase in tooth spacing,the likelihood of jamming, and the propyl acquires a greater width. It is worth noting that in this case, more effort has to be applied for the tool to work. In the absence of special tools, many people use an adjustable wrench to set the teeth, but this technique has many limitations and is not suitable for all saws.
The type of wiring is primarily influenced by the type of wood, which will subsequently be processed. For example, to obtain a smooth cut without any flaws and protrusions on soft rock, a large wiring is required. It is desirable that the teeth deviate in the selected direction by 5-10 mm. Sharpening of saw blades on wood is carried out only after the wiring has been carried out, otherwise the teeth will be unusable due to the resulting deformation.
Choose an angle
The purpose of the saw, that is, the type of suitable materials, determines the required sharpening angles. A relatively large value is used for rip sawing elements (within 25 degrees), for cross cutting saws this parameter is 5-10 degrees. The sharpening angle of universal saw blades (used for ripping and cross cutting) is 15 degrees.
In addition to the cutting direction, the density of the material to be sawn must also be taken into account. With a decrease in density, the value of the anterior and posterior angles increases, that is, the tooth becomes more pointed. The rake angle parameter can also be negative, this is necessary for working with plastic andnon-ferrous metal.
When saw blades need sharpening
To know when to use a circular saw, you can pick up a small part, the density and quality of which corresponds to the materials used for the job. Next, you need to cut the bar. The disc does not require processing if a smooth cut is formed, the saw moves easily and does not make noise during operation. In the opposite situation, you need to sharpen the disc at home or, in the absence of a special tool, contact the workshop. It is worth noting that this process must be carried out in accordance with all the rules and taking into account safety precautions. Before that, you need to decide on the required angle and shape of the teeth. There are also additional factors that indicate the need for sharpening:
- during the processing of wood, the smell of burning is felt and soot is formed on the cut itself;
- the motor starts to overheat and contributes to the heating of the casing of the device;
- requires a lot of effort to move the disc.
What you need to know
Sharpening saw blades (St. Petersburg) today is produced by many companies, but not all are able to provide a quality result. The problem is that this process requires equipment with expensive tools and knowledge of all aspects and features of such painstaking processing. Masters must have experience in this field and observe all the nuances and stages of work. For example, the sharpening angle is affected not only by the tool used, but also by the disk itself, in particularmaterial taken as the basis for production.
The saw blade must have an angle appropriate for the types of surfaces used for the job. The equipment can work with values within 45 degrees. Of particular importance is the observance of the set grinding angle, suitable for processing a particular material. Only when all the recommendations and rules of work are taken into account can the service life of the cutting element be increased.
Sharpening Carbide Saw Blades
The processing of such elements has several complex stages and is carried out on special equipment, which is a grinding machine with extended functionality. In particular, it must provide cooling of the treated area in the form of supplying a special composition and carrying out work in automatic mode. Such equipment, as a rule, is equipped with a controller designed to detect the number of teeth and sharpen the disc itself with a selected number of cycles. Also on the machines there is a magnet needed to secure the saw and prevent it from moving during processing. For sharpening, a grinding wheel is used, on the surface of which diamond coating is applied. The saw blade sharpening machine is also equipped with an electric motor to automatically move the saw and perform processing in the required area.
Diamond Coated Saw Processing Equipment
Such machinesmust have a structure complemented by a cast reliable base. This ensures high precision processing of discs, which are made of materials with special strength. They also have a high-angle lock. The base is supplemented with special rubber elements that reduce vibrations that can impair the quality of work performed. Thanks to this addition, the level of noise that occurs during processing is reduced. Adjustment on the equipment is made manually, while the diamond-coated blades used for sharpening saws increase the quality of the result and extend the life of the tool.
What to consider when processing
The principle of operation of the grinding disc has its own characteristics, as well as its structural design. The materials for its manufacture are based on 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 must be taken into account that the wheels have different diameters and are suitable for different tools and types of materials, so you need to carefully select the right model in accordance with the available tool to be processed.
Features
Sharpening of saw blades in Moscow is carried out on various equipment. Processing can be carried out semi-automatically, that is, without human intervention, the task of the masters is only to install parts on the machine and remove them. The most common varietyequipment on which sharpening is done manually. It is easy to adjust thanks to the equipment in the form of locking levers, and the exact observance of the required sharpening angle is carried out using special clamps. The main feature is the linear feed method. This achieves high-quality processing of both rear and front teeth. Thanks to the additional function of the machines, which consists in diagonal sharpening of the edges, the operation of the saw is simplified and the quality of the resulting cut is improved. When choosing a blade for sharpening saw chains, first of all, you need to consider the degree of grit. Fine grit products provide minimal processing of the chains, while coarse grit products remove a sufficient layer of material. The cost of such discs is directly affected by the popularity of the manufacturer, the quality of the base and the type of product.
