Low-noise electric circular saw

Abstract

The invention discloses a high-speed portable electric circular saw. The electric circular saw comprises a shell, a saw blade, a motor and a support plate. The surface of the shell is provided with a silencing cotton layer. The shell is arranged on the outer side of the upper half portion of the saw blade and arranged at the upper end of the support plate. The upper end of the shell is provided with a handheld handle. The front end of the handheld handle is provided with a switch button. The rear end of the shell is provided with a power line. The periphery of the saw blade is uniformly provided with sawteeth. A mounting hole is formed in the middle of the saw blade. A first driving gear, a first driven gear, a second driving gear and a second driven gear which are engaged in sequence are arranged in the shell. The input end of the first driving gear is connected with an output shaft of the motor. The first driven gear and the second driving gear share the same rotary shaft. The second driven gear and the mounting hole of the saw blade share the same rotary shaft. The electric circular saw is convenient to take and hold, safe, efficient and low in noise, is not affected by workpiece materials and has good straight line guiding properties.

Description

technical field [0001] The invention relates to the field of mechanical processing equipment, in particular to a low-noise electric circular saw. Background technique [0002] Hand-held electric circular saws are divided into several specifications. One classification is based on the constant depth of wood cutting. Generally speaking, the deeper the wood cutting depth, the larger the diameter and volume of the motor and circular saw blade. The strength of the hand also needs a corresponding booster. In order to solve this problem, there are also two-stage transmission gears on the market. The angle between the two transmission gear sets is greater than 90 degrees, generally between 100 and 120 degrees. This setting looks relatively large. The distance between the two transmission gear sets is large, and the strength required for hand-held operation is relatively large. For the staff with less strength, it is laborious to pick it up, and there are certain safety hazards; the...

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Problems solved by technology

In order to solve this problem, there are also two-stage transmission gears on the market. The angle between the two transmission gear sets is greater than 90 degrees, generally between 100 and 120 degrees. The distance between the two transmission gear sets is large, and the strength required for hand-held operation is relatively large. For the staff with less strength, it is laborious to pick it up, and there are certain safety hazards; the staff are using electric circular saws to cut wood. Among them, the vibration amplitude of the saw blade is large and it is easy to shake, and the saw blade will fall off seriously, which will affect the cutting efficiency, and also reduce the cutting quality and the life of the saw blade. In addition, the existing electric circular saw is noisy when it is working. affect workers' health

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