The processing of wood products has always been demanding of equipment in terms of energy costs. In order to simplify the process and increase the productivity of the work with wood, in the XX century a special device was created - a circular saw. The first woodworking equipment was quite cumbersome: it was a stationary machine, which was invented by Raymond DeWolt. Such a saw became an innovative breakthrough and at first was quite expensive.
Circular saw design.
Over time, this technology has become available in a wide range for all segments of the population. This was made possible by the German company AEG, which specializes in the manufacture of industrial equipment. Circular saws manufactured by this company maintained a mains voltage of 220 V, so it was convenient to use them in domestic conditions.
Today, this device is equipped with the most advanced improvements, since it is equipped with all possible functional elements. But companies specializing in the production of circular saws, still continue to improve their own technology, trying to design high-strength and durable components for equipment. Below are considered in detail the device circular saws and their structural features.
Features of the device circular saws
Mini circular saw with your own hands.
The newest equipment has a rather complicated structure, since it balances high requirements for safety during operation and verified configuration of some important components.
For this reason, it should be borne in mind that at home it is impossible to competently repair high-tech circular saws. This will require the assistance of a qualified technician with the necessary knowledge, as the adjustment of the equipment requires highly precise adjustment of each element. If this process is irresponsible, there is a possibility of damage to the instrument. In addition, you can jeopardize your own safety by using a poorly adjusted device.
Circular saw, popularly referred to as parquet or circular saw, is mainly used for uniform sawing of wood products, raw logs, thick plywood and various types of boards. However, this equipment is used for cutting wood products transversely. The compact circular saw has many functions, so its track record is not limited to sawing wood.
Diagram of the stone cutting circular saw.
Such devices provide for the possibility of changing and assembling special disks intended for working with laminated and plastic surfaces, as well as with sandwich panels and asbestos-cement material, from which roof slate is usually made. The saw can cut almost all types of building materials, but there are some exceptions that limit its capabilities:
- sawing is carried out exclusively along the longitudinal line without the possibility of performing arc cutting;
- It is impossible to cut building materials with high density (cement, brick, cinder block, plaster).
However, there are special models (for example, Makita 4101-RH), including diamond wheels in their equipment for sawing hard surfaces. In addition, they are equipped with a water feed system that simplifies the process of cutting dense materials.Back to table of contents
Circular saw for metal cutting
Circular saw blade inspection scheme.
Circular saws designed for cutting iron are considered multifunctional devices, as cutting with metal implies that they can easily cope with other types of materials with a dense structure. Unlike Bulgarians, where an abrasive disc is used, this equipment is equipped with a circle that looks like a big gear and is made of a special type of tool steel. Such a disk can cut dense pipelines, iron guides, steel sheets, copper and aluminum products, as well as stainless steel.
Circular saws cutting metal have certain advantages over other tools:
- an integrated base simplifies the sawing process;
- higher performance;
- high-quality noise insulation;
- in the process of work, the material being processed is not heated, sparks do not pour out of it;
- there are almost no emissions of small particles;
- a protective cover provides the master with additional security during the operation of the device;
- no burrs;
- the option of cutting on a bevel is possible.
Modern models of such equipment have long been widely distributed in all foreign construction stores. In Russia, circular saws, cutting metal, appeared relatively recently, but immediately gained high popularity among builders and amateur craftsmen.
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The most common tool is the Evolution Extreme-230 circular saw, as it can easily cut steel sheet up to 1.5 cm thick with a light movement, not to mention less dense materials.
What is an immersion circular saw?
The submersible saw is designed for the formation of crevices, openings, grooves and holes of various configurations. For example, with its help, you can create a large hole in the bathroom cupboard to place a sink there. Immersion circular saw can cut material from any place, that is, it does not limit the design features of the treated surface.
The immersion saw is an indispensable equipment during the repair of flooring, roofing systems and building walls. It can cut several laminated layers in one cycle. To prevent the appearance of inaccurate dents and deformation of the coating, it is recommended to perform cutting in 2 cycles. The first cycle involves cutting the surface of the material with a small entry into its structure. In the course of work, it is permissible to tilt the saw by several degrees, if this greatly simplifies the cutting procedure.Back to table of contents
Circular saw on battery
Circular power saw.
Battery devices that do not need power from the grid, from year to year, are becoming increasingly popular, displacing conventional network equipment. This is because portable devices allow work outside the home and in places that are difficult to access, such as a roof or basement.
Previously, the relatively short period of operation was considered the main disadvantage of battery equipment, which was due to a rather large consumption of energy reserves. Therefore, for comfortable work, batteries with large volumes were necessary, which, in turn, required a certain amount of time to fully charge them. Most companies that produce such equipment have taken this into account and equipped modern devices with backup batteries that guarantee the uninterrupted operation of the saw, while it takes about 30-40 minutes to fully recharge them.
Given the technical configuration, namely the power and speed of the equipment, a circular saw such as the Bosch GKS 36V-Li can compete at a decent level with devices that only operate on the grid. In addition, the cordless saw is quite easy to operate.Back to table of contents
Competent selection of circular saws
Sharpening circular saw.
The main parameter in the selection of a circular saw is the size of the cutting disk, since it is the material cutting depth that depends on it. According to this indicator, it is customary to divide circular saws into several categories.
In other words, the size of the cutting disc implies the overall power and complexity of the design of the equipment itself, which should provide a balanced torque. In addition, when the working disk is large, the device of the stabilizing system becomes complicated, which prevents the formation of noise, vibration, and jamming of the saw during the processing of dense structures.
These requirements primarily affect the size, weight and cost of the circular saw. The advantage of such equipment is the possibility of sawing large-sized products.Back to table of contents
How are circular saws classified?
Table for circular saw.
Such equipment is classified rather arbitrarily. The equipment is divided into categories according to the size of the cutting discs and the maximum depth of their penetration into the fabric. These values are most often displayed in the technical passport of the equipment. Focusing on this classification, circular saws can be divided into the following categories:
- household devices that are designed for cutting sheet material with a thickness of 3-5 cm;
- semi-professional equipment designed for cutting webs 5-7 cm thick;
- professional equipment, cutting materials with a thickness of 6.5-14 cm.
It should be noted that the most common types of circular saws fall into the second category. As is clear, the division is rather conditional. For example, the most popular manufacturer specializing in the manufacture of professional equipment is Makita. She formed her own classification of circular saws, which does not include household appliances. It is worth mentioning that the company Makita produces not only circular saws, but also other high-tech equipment, which is used in the construction industry.
In addition, circular saws can be classified by motor power. It should be borne in mind that the overall motor stability during operation depends on the power of the motor of the device, which affects the security level of the master and ensures the absence of overheating and vibration. The size of the cutting disk depends on the power of the equipment, so the division into categories is also rather arbitrary:
- home appliances with power from 600 to 900 W;
- multifunction devices with capacity from 900 to 1300 W;
- professional devices with power from 1300 W and more.
Self-made fence for a circular saw.
One of the important parameters in the selection of the saw is the disc speed. This indicator primarily affects the uniform and fast cutting of the web. But it is worth remembering that in addition to frequency, the shape of the working disk and the size of its teeth affect the speed. The more pressure is on the cutting disc, the slower it rotates, reducing its performance.
The speed of rotation affects the overheating of the treated web. For this reason, when planning for the frequent processing of plastic products, it is necessary to select equipment with a lower speed of rotation of the cutting disk, since plastic may melt due to the high temperature.
When buying, you need to pay attention to circular saws with a suitable size of the cutting disk and the required speed of rotation. The modern market offers a wide range of devices with a rotation speed controller, but it is worth preparing for the fact that such equipment will be expensive.
The latest models of circular saws are equipped with various electronic systems that guarantee the safety of the master in the process of working with equipment. Given that such a device represents a high danger to humans, you should not save on this indicator. In addition, a circular saw, equipped with an electronic control system, is considered to be more durable, since such equipment prevents damage and destruction of the main elements of the device.
Circular saws that operate from the power grid do not require refueling, like a chainsaw. Such devices provide more comfortable conditions during operation, since they do not produce strong noise. Chainsaws reserve exhaust gases behind them that harm the human body under working conditions in enclosed spaces. However, the functional features of a circular saw do not depend on air temperature, while a chainsaw is often difficult to launch in the cold period of the year. This manual describes the design features and types of circular saws. It is designed to help determine the choice when buying the desired tool. Remember that the operation of such equipment can not be neglected safety regulations.