Tips For Correct Use Of a Saw Blade
The maximum RPM of a circular saw blade varies based on the diameter of the blade itself.
If you exceed this limit, the saw blade will lose its characteristics, therefore influencing the cutting quality and the work life of the blade itself, not to mention the dangers implied to the user who may incur serious injury.
The saw blade’s projection(T) concerning the workpiece must be at least equal to the height of the blade’s tooth.
Increase or decrease the projection of the saw blade to improve the quality of the cutting finish.
The number of teeth cutting(teeth cutting the wood simultaneously) must be between3or4With less than three teeth cutting, the saw blade begins to vibrate leading to an uneven cut.
If you want to cut a workpiece with increased thickness, but wish you maintain the same diameter saw blade.
Then use a blade with fewer teeth instead you want to cut a workpiece with a reduced thickness.
But also maintain the same diameter saw blade, and use a blade with more teeth.
To obtain the pitch(P)of a blade(the distance between teeth)multiply the thickness of the workpiece by 1.4142 and divide by 3 (if you want 3teerh cutting)or by 4(if you want 4 teeth cutting).
Formula “b”: to obtain the number of teeth (Z) of the saw blade, multiply the diameter (D) of the saw blade by 3.14 and divide by the pitch of the saw blade – obtained from the previous formulaThe shorter formula “C” allows you to obtain the nr.
Of the saw blade’s teeth, you are knowing its diameter and the thickness of the workpiece.
S=工件厚度thicknessof the workpiece
Z=锯片齿数nr.Teeth of sawblade
D=锯片外径diameterof the sawblade
The above formula is suitable for cross-cutting saw blades or cutting other synthetic materials (MDF, plywood, cardboard, and laminate), not for longitudinal saws.
The correct use of a saw blade to obtain the best performance from a saw suggests following these simple.
Tips For Correct Use of Saw Blades
1. The machine must be in good condition, free of vibrations;
2. The flanges used to secure the blade must be of the same diameter, at least 1/3 of the blade’s diameter;
3. The flanges must be parallel to each other, Also, check tolerances on diameters, sides, and concentricity, by using a clock gauge.
4. The spacers must be perfectly parallel.
5. The spacers must be perfectly straight and with an H7 tolerance.
6. After continuous use, remove the blade and clean it, making sure to get rid of resin buildup with the appropriate solvents.
7. The blades must be sharpened as soon as they become dull, maintaining the original tooth angles.
8. For sharpening, always use the correct grinding wheels and plenty of cooling liquid.
9. The maximum reboring of the blade is 20mm of the original bore size. Above this value, the blade will lose its original turning and overall performance will be affected.
10. Always keep spacers and flanges clean.
11. When sharpening, the shoulder of the teeth must not be lowered more than needed operation must be done with appropriate precision machinery and never by hand
There is the risk of breaking the tip or upsetting the blade balance.
12. On ripping machines, the feeding track must be leveled with the fixed table.
13. Before starting the cut of material, make sure the blade is correctly locked according to the machine’s specifications.