The saw wheel is divided into a spoke-type upper saw wheel and a panel-type lower saw wheel; the lower saw wheel is a driving wheel, and the upper saw wheel is a driven wheel. The weight of the upper saw wheel should be 2.5 to 5 times lighter than that of the lower saw. The cutting speed of the band saw blade is usually 30~60m/s. The upper saw wheel lifting device is used for loading and unloading and adjusting the tension of the band saw blade; the upper saw wheel tilting device is used to prevent the band saw blade from falling off the saw wheel during sawing. The band saw blade tensioning device can endow the upper saw wheel with elasticity to ensure the stable tension of the band saw blade during operation; the old type adopts a spring or lever weight mechanism, and the new type adopts pneumatic and hydraulic tensioning devices. The guide device is commonly known as the saw card, which is used to prevent the twist or swing of the band saw blade during sawing; the lower saw card is fixed at the lower end of the bed, and the upper saw card can be adjusted up and down along the vertical slide rail; the saw card structure has a roller type and a slider type. , The slider type is made of hardwood or wear-resistant plastic. Band saws are widely used in the wood industry, and there are many models. According to the process use, they can be divided into:

Large band saws, re-slicing band saws and joinery band saws; according to the placement of the saw wheel: vertical, horizontal and inclined, and vertical: right and left; according to The installation method of the band saw machine is divided into: fixed type and mobile type; according to the number of combined sets: ordinary band saw machine and multi-band saw machine, etc.