Cemented carbide saw blade contains many parameters, such as tooth shape, angle, number of teeth, thickness, diameter and type of cemented carbide. These parameters determine the machining ability and cutting performance of the saw blade. Therefore, the saw blade parameters should be selected correctly according to the needs.
Common tooth shapes include flat teeth, bevel teeth, trapezoidal teeth, inverted trapezoidal teeth, etc. Flat teeth are widely used, mainly for sawing common wood. This kind of tooth shape is relatively simple, and the cutting edge is relatively rough. Flat teeth can make the groove bottom flat during slotting process operation. The better quality is the angle tooth saw, which is suitable for cutting wood-based panels and veneers. The trapezoidal saw blade is suitable for cutting the panel with high quality. Inverted trapezoidal teeth are commonly used in bottom groove saw blades.
The position of saw tooth in cutting is the angle of saw tooth, which affects the performance and effect of cutting. It is the rake angle γ, rake angle α and wedge angle β that have great influence on cutting. The larger the rake angle is, the lighter the cutting will be. The rake angle is generally between 10-15 degrees. The back angle is the angle between the saw tooth and the machined surface. Its function is to prevent the friction between the saw tooth and the machined surface. The larger the back angle is, the smaller the friction is, and the smoother the processed product is. The back angle of cemented carbide saw blade is generally 15 ° and the wedge angle is derived from the front angle and back angle. But the wedge angle can not be too small, it plays a role in maintaining the strength, heat dissipation and durability of the teeth. The sum of anterior angle γ, posterior angle α and wedge angle β is equal to 90 degrees.
Generally, the more teeth there are, the more cutting edges there are in a unit time, and the better the cutting performance is. However, if there are more cutting teeth and more cemented carbide is needed, the price of the saw blade will be higher. However, if there are too many saw teeth, the chip capacity between the teeth will be smaller, which will easily cause the saw blade to heat up. However, if there are too many saw teeth and the feed is not matched properly, the cutting amount of each tooth will be small, which will aggravate the gap between the edge and the workpiece The service life of the blade will be affected by the friction of the blade. Generally, the tooth spacing is 15-25mm, and the reasonable number of teeth should be selected according to the sawing material.
Theoretically, the thinner the saw blade, the better, but in fact, the SAW seam is a kind of consumption. The thickness of the saw blade is determined by the material used for sawing and the manufacturing process of the saw blade. Jinxin suggests that when you choose the thickness of the saw blade, you should consider the stability of the saw blade and the cutting material.
The diameter of the saw blade is related to the sawing equipment and the thickness of the workpiece. The small diameter of the saw blade results in relatively low cutting speed; the large diameter of the saw blade requires high requirements for the saw blade and cutting equipment, and the cutting efficiency is also high.
