What are the troubleshooting tips for woodworking band saw machines:

Common problems encountered by machine tools when sawing The main faults are saw blade breakage, falling strips, and bending of the sawed wood.

The reasons for saw blade breakage are generally as follows:

1. Causes of the saw machine: ① The saw machine vibrates and the bearings wear. The machine tool should be reinforced and the bearings replaced to make it stable.

②The tensioning device failed and the weight was too heavy. Check the tensioning device and the weight is adjusted properly.

③The surface of the saw wheel is never flat. The rim surface should be smoothed.

④The upper and lower saw wheels are deflected and never on the same "vertical plane". Adjust and correct the upper and lower saw wheels.

2. Reasons for the saw blade: ①The saw blade steel is brittle and has low toughness. Choose a saw blade with good toughness.

②The saw wheel is small and the saw blade is thick. Choose a saw blade that is suitable for the saw wheel. Saw blade thickness = (0.0007-0.001) × saw wheel diameter.

③The appropriate tension is too large or too small. The tension is moderately trimmed.

④The joint is not secure and is poorly trimmed. The joints are welded firmly and trimmed.

⑤The saw teeth are not sharp and have been used for such a long time. The saw teeth are sharpened and the use time is limited to two hours.

⑥The saw blade has cracks and is barely used. Drill a small hole at the root of the crack to prevent it from expanding; if it is too large, it should be cut off and reconnected.

3. Reasons for operation: ①The feeding speed is too high, and the feeding speed should be flexibly controlled according to the specific situation.

②The feed is so fierce, or it will never slow down when encountering a knot. Feeding is smooth and slows down when encountering knots.

③There is resin on the saw wheel, and the sawdust is so thick. Scrape off the resin sawdust promptly.

(2) When the saw blade moves left and right or suddenly in and out when running with the saw wheel, this situation is called bar drop. There are several reasons as follows:

①The upper wheel is tilted and the upper wheel is adjusted.

②The outer diameter of the saw wheel has such a large taper, and the saw wheel is by no means flat. Precision turning and grinding, smooth rim surface.

③The wood is split and gets stuck when returning the material, so pull it off. Pay attention to wood defects when working.

④The clamp saw becomes hot and the appropriate tension decreases and disappears. Clean the resin sawdust on the saw wheel and saw blade and the debris on the saw card, and brush them with oil frequently.

(3) The sawed wood is bent, generally for the following reasons:

1. Causes of the saw: ①The tensioning device is not working and the weight is too light . Generally repair the tensioning device and add weight.

②The rim surface of the saw wheel is worn and the left and right diameters are different. The rim surface must be turned and ground.

2. Reasons for the saw blade: ①The tooth shape is not correct, the tooth chamber is too small, and the saw blade is narrow and biased. Correct the tooth shape, enlarge the tooth chamber, and adjust and enlarge the saw path.

②The appropriate tension is not uniform and the mouth is loose, adjust the appropriate tension.

③There are too many joints and improper trimming. Try to keep saw blades with as few joints as possible, or provide special repairs to saw blades with many joints.

3. Reasons for operation: ①The upper and lower hands are never consistent. The top and bottom minds should be focused and in sync.

②The saw clamp is too loose or too skewed. Adjust the saw clamp.

③The feeding speed is too fast and not uniform. Feeding remains stable and slows down when encountering knots.

④The saw wheel and saw blade are stained with resin sawdust, please remove it in time.

⑤The saw teeth are blunt and must not be used anymore. The saw blade is defective, so you use it reluctantly.

5. Maintenance and maintenance of machine tools

This machine tool is a high-speed running machine. All parts must not malfunction. Even if there is a small problem, it will be repaired. It will directly affect the life of the machine tool, production efficiency and normal and reliable work. In order to ensure the normal operation and safe operation of machine tools for many years, it is necessary to strengthen the maintenance and management of machine tools.

2. The bearings, gear screws, slides and other friction parts on the machine tool must be lubricated regularly.

3. When working, pay attention to whether there are any abnormalities in the rolling bearings of the upper and lower saw wheels. Their temperatures must not exceed 60°C.

4. Check and correct each component frequently. Use the hanging wire method to check whether the upper and lower saw wheels are on a vertical plane. If there is distortion, it is advisable to adjust the upper wheel. If the gap is too large, you can also adjust the lower wheel. After the upper and lower wheels have been working for a period of time, the joints will be somewhat worn. If so, check frequently whether the upper wheel lifting system is flexible and reliable; whether the saw card lifting device can slide freely on both sides; and whether the manual tensioning device is flexible and effective. Check whether the various parts are damaged; whether the connecting parts are loose, etc. If anything unusual is discovered, it should be resolved promptly. Either scrub, refuel, repair, correct, or replace to ensure the safe and normal operation of the machine tool.