Household electrical appliances. Electric saws. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Household electrical appliances. Electric saws. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Household Appliances

Electric saws are used for transverse and longitudinal sawing of materials, such as boards and bars. In addition, they can cut at a certain angle.

In the manufacture of furniture, for example, it is recommended to use electric saws, which include various interchangeable files that allow you to cut not only plywood and wood, but also modern coated sheet material. The power saw handles materials such as hardwood, drywall, plastic, and brick. Circular and chain saws significantly reduce the time spent on sawing timber, but they are not suitable for fine work. The saws of the following brands are most widely used: IE-5107, K-5M, EP-5KM.

For sawing unhewn logs, ridges, saws of the EP-K6 brand are needed.

The cutting part of such saws is a saw chain, which consists of teeth connected by hinges.

Working with the listed saws requires compliance with safety regulations:

1. When sawing in a damp room, the mains voltage should not exceed 36 V.

2. The saw can only be transported by placing it in the case.

3. After finishing work, the saw must be removed to a place specially designated for it.

When working with an electric saw, it should be remembered that this is a tool that is a source of increased danger. Having bought such a saw, first of all, you should carefully study the device of the saw and the rules for its operation. Before starting work, remove the bushing and fill the stuffing box with grease. Lubrication is repeated every 25-30 hours of operation.

The manual circular saw IE-5107 has a fairly high frequency of rotation of the disk - 2940 rpm, which provides a 750 W electric motor, so it cuts wood materials up to 65 mm thick, and a special device allows you to change the angle of inclination of the cutting part from 0 to 45 °.

This saw has a single-phase electric motor and runs on a conventional 220V power supply.

Before work, check the correct sharpening and breeding of the saw teeth and the strength of the disc fit on the spindle. The disc must not be cracked or damaged. In order to check the condition of the gearbox, turn the disk slightly. If turning the disc is difficult, the lubricant should be made more fluid. This can be achieved by idling the tool for 1 minute.

Before starting work, the material to be sawn is fixed on a workbench. After that, the rear handle of the saw is grabbed with the right hand, and the front handle with the left hand and the cutting part of the saw is set on the material. They guide the saw along the intended line easily and smoothly, since with sharp jerky movements the tool disk can jam, as a result of which the electric motor may break.

If, nevertheless, the disk is jammed, take the saw back. This is done so that the disk comes out and gains the required speed. Only then do they continue to work.

After finishing work, the tool is turned off and wiped with a rag soaked in kerosene.

Working with an electric saw requires increased attention and precise adherence to the technology of work. Deviations from the order of work and inattention threaten to result in serious injury. Therefore, if any deviation from the normal operation of the saw is detected, it should be immediately turned off and the cause of the failure should be dealt with. If the damage is serious, it is best to seek help from a specialized workshop.

Author: Korshevr N.G.

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