Power tools detail: electric circular saw

An electric Circular Saw is a power tool primarily used for sawing wood and is very popular in the woodworking industry and DIY projects due to its portability and efficient cutting ability. The following are some basic information and features of the electric circular saw:
1. Use:
- The electric circular saw is mainly used for straight line cutting of wood and some simple curve cutting.
- With the support, the electric circular saw can also be used as a small table saw, increasing its stability and applicability.

2. Specifications indicate:
- The specifications of the electric circular saw are usually determined according to the diameter of the saw blade used, which directly affects the depth and suitability of the cut.

3. Common specifications:
-ϕ 185mm: Suitable for finer wood and some fine cutting work.
-ϕ 200mm: Medium sized saw blade for a wide range of wood-cutting tasks.
-ϕ 235mm: Large saw blade for thicker wood or where large cutting depth is required.
-ϕ 250mm: Suitable for heavy wood cutting and some professional woodworking.
-ϕ 300mm: Large saw blade for industrial-grade or large woodworking projects.

Precautions for using an electric circular saw
1. Use of lower shield:
- The lower guard of the electric circular saw is essential to protect the saw blade and prevent personal accidents. It should not be removed when in use, and it should be regularly checked whether it can be automatically reset to ensure its normal function.
2. Saw blade selection:
- Do not use saw blades made of deformed, cracked or high speed steel, which may break during high speed rotation and cause serious injury.
- Use only saw blades that comply with instructions to ensure safety and optimum performance.
3. Restrictions on cutting materials:
- Avoid cutting glass fibers with an electric circular saw, as this may damage the saw blade and create harmful dust.
4. Hand position and precautions after power off:
- When working, the hand must leave the sawing area to prevent accidental injury.
- After turning off the power switch, the saw blade will still turn for some time due to inertia. Do not touch the saw blade before it completely stops.
5. Saw blade installation and inner hole specifications:
- Do not use saw blades that do not meet the specified internal holes, which may lead to unstable installation of the saw blade and increase the risk of accidents.
- Before operation, ensure that the saw blade is properly installed and clamped, and ensure that the electric circular saw will not accidentally start after the power plug is inserted into the power socket.
6. Power supply and accidental start prevention:
- Before inserting the power plug, ensure that the electric circular saw is in a safe state to avoid injury caused by accidental starting.
7. Personal Protective Equipment:
- When using an electric circular saw, wear appropriate personal protective equipment, including goggles, dust masks, earplugs or earmuffs, gloves, etc.
8. Maintenance and inspection of tools:
- Check and maintain the electric circular saw regularly to ensure that all components work properly, especially the power cord and plugs, switches, saw blade fixtures, etc.
9. Operation training:
- Ensure that operators are properly trained on the proper operation and safety measures of electric circular saws.

Replacement of main parts of electric circular saw

1, the correct installation of alloy saw blade Some users will install the alloy saw blade backwards, will make the cutting speed is very slow. When installing the alloy saw blade, the head shell is marked with a rotating arrow, and the alloy saw blade is also marked with a rotating arrow (consistent with the tooth direction), and the two marks should correspond correctly and cannot be opposite.

2, the screw is broken in the shaft with a small punch, the top on the edge of the screw, in accordance with the counterclockwise direction with a hammer to the small punch impact, so that generally can be loosened, the screw, and the broken screw out.

3. Stator and rotor sweep failure caused by shell deformation For the problem of low speed of electric circular saw, the following measures can be taken to investigate and repair:
1. Check the stator and rotor: you have found that the stator and rotor are swept, which is an important reason for the low speed of the electric circular saw. The fault persists after the bearing is replaced and the stator fixing bolt is checked, indicating that the problem may not be in the bearing.
2. Check the deformation of the casing: you mentioned that after the disintegration again, there is only one point on the inner wall of the stator core, which is estimated to be caused by the deformation of the casing. In this case, the opposite position of the sweep point can be used to pad between the stator and the casing, so that the stator position changes, so as to solve the fault.
3. Insulation and fixing: the pad must be insulated to avoid short circuit or electric shock accidents. At the same time, be sure to use universal adhesive to ensure that the gasket will not shift or fall off during the operation of the electric circular saw, causing further damage.
4. Avoid the use of metal materials: Never use metal materials for gaskets, because metal materials may cause short circuits or other electrical failures.