Sharpening of saw blades is necessary for any tool used for wood processing. It is produced in the event of a decrease in cut quality 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 tool for bending, but in this case it is necessary to monitor the position of all the teeth, otherwise the disk will be damaged and will not provide proper processing of wood.
- During the work, the holding bars must fit snugly against the disk, and the surface should remain unchanged.
- In order to sharpen the saw blades correctly, the location of the part must provide a free view of all the teeth.
- As a rule, the machine acts as the main tool, but sometimes it becomes necessary to remove the disk and fix it in a vice.
- Before changing the angle, a suitable tool is preliminarily prepared and marks are made.
Training
Before starting work, it is necessary to de-energize the tool, the detail 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. For all teeth, marks are placed on the blade, while in the process equal forces and the same number of movements of the tool are applied. So you can produce high-quality, uniform processing of the disk.
The part is set back after reaching the desired form and checking the sharpening angles. Next, you need to make a trial cut on the machine and verify 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 the sharpening of the saw blades is carried out independently, it is worth remembering the bent edges, 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 uniform bending in the middle of all elements. After carrying out such a procedure, the saw will become more free running, and the width of the cut will become larger.
Taking into account the fact that the cut is not produced by the disc itself, but by its edges, which gradually remove the layers of wood, it becomes clear that with an increase in tooth divorce, the likelihood of jamming is reduced, and the cut becomes large. It is worth noting that in this case, you have to put more effort into the tool. In the absence of special devices, many people use an adjustable spanner to breed teeth, but this technique has many limitations and is not suitable for all saws.
The type of layout is primarily affected by the type of wood that will subsequently be processed. For example, to get a smooth cut without any flaws and protrusions on soft rock requires a large wiring. 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 wiring, otherwise the teeth will be unsuitable for use due to deformation.
Angle selection
The purpose of the saw, i.e. the type of suitable materials, determines the necessary sharpening angles. A relatively large value is used for elements of longitudinal sawing (within 25 degrees), for saws of transverse processing, this parameter is 5-10 degrees. The angle of sharpening of saw blades of a universal type (used for longitudinal and transverse sawing) is 15 degrees.
In addition to the direction of processing, the density of the material to be sawn must also be taken into account. With decreasing density, the value of the front and rear angles increases, that is, the tooth becomes more pointed. The rake angle parameter can also be negative, this is necessary for working with plastic and non-ferrous metal.
When sharpening saw blades is required
To find out when you need to do a circular saw, you can pick up a small part, the density and quality of which corresponds to the materials used for work. Next, you need to cut the bar. The disk does not require processing in case an even cut is formed, the saw is easy and does not make noise during operation. In the opposite situation, you need to sharpen the disk 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 precautions. Before this, you need to determine the desired 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 carbon deposits are formed on the cut itself;
- the motor begins to overheat and contributes to the heating of the casing of the device;
- It takes a lot of effort to move the disc.
What you need to know
Sharpening of saw blades (SPb) today is done by many companies, but not everyone is able to provide a high-quality result. The problem is that this process requires equipping 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 disc itself, in particular the material taken as the basis for production.
The circular saw should have an angle corresponding to the types of surfaces used for work. The equipment can work with values within 45 degrees. Of particular importance is the observance of the set point angle, suitable for processing a particular material. Only taking into account all the recommendations and rules of work can you extend the life of the cutting element.
Sharpening carbide saw blades
The processing of such elements has several difficult stages and is performed on special equipment, which is a sharpening machine with advanced functionality. In particular, it should provide cooling of the treated area in the form of supply 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 sharpen the disk with the selected number of cycles. Also on the machines there is a magnet necessary to fix the saw and prevent its movement during processing. For grinding, a grinding wheel is used, on the surface of which diamond spraying is applied. The machine for sharpening saw blades, in addition, is equipped with an electric motor for the automated movement of the saw and processing in the required area.
Equipment for processing saws with diamond dusting
Such machines should have a structure supplemented by a cast reliable base. This ensures high precision machining of disks that are made of materials with special strength. They also have a latch with a high level of inclination. The base is supplemented with special rubber elements that reduce vibration, which can impair the quality of work performed. Thanks to this addition, the noise level that occurs during processing is reduced. Adjustment on the equipment is done 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 wheel has its own characteristics, as well as its structural design. The materials for its manufacture are based on nitrogen and boron compounds, 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 circles have different diameters and are suitable for different tools and types of materials, 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 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 type of equipment on which the point is made in manual mode. It is distinguished by easy adjustment 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 ensures high-quality processing of both the back and front teeth. Thanks to the additional function of the machines, which consists in the 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 granularity. Fine grain products provide minimal chain processing, while coarse grains remove a sufficient layer of material. The cost of such disks is directly affected by the fame of the manufacturer, the quality of the base and the variety of the product.