1. Basic data before selecting saw blades
①The speed of the machine spindle, ②The thickness and material of the workpiece to be processed, ③The outer diameter of the saw and the hole diameter (shaft diameter).
2. Selection basis
Calculated by the number of spindle revolutions and the outer diameter of the saw blade to be matched, the cutting speed: V=π×outer diameter D×number of revolutions N/60 (m/s) The reasonable cutting speed is generally 60-90 m/s. Material cutting speed; softwood 60-90 (m/s), hardwood 50-70 (m/s), particleboard, plywood 60-80 (m/s).
If the cutting speed is too large, the vibration of the machine tool is large, the noise is loud, the stability of the saw blade is reduced, the processing quality is reduced, the cutting speed is too small, and the production efficiency is reduced. At the same feeding speed, the cutting amount per tooth increases, which affects the processing quality and the life of the saw. Because the saw blade diameter D and the spindle speed N are a power function relationship, in practical applications, it is most economical to increase the speed reasonably and reduce the saw blade diameter.
3. Quality and price ratio
As the saying goes: “cheap is not good, good is not cheap”, it may be true for other commodities, but it may not be the same for knives and tools; the key is matching. For many factors on the job site: such as equipment sawing objects, quality requirements, personnel quality, etc. Conduct a comprehensive assessment, and make the best use of everything rationally, so as to save expenses, reduce costs, and participate in industry competition. This depends on the mastery of professional knowledge and the understanding of similar product information.
Correct use
In order for the saw blade to perform at its best, it must be used strictly according to specifications.
1. Saw blades with different specifications and uses have different head angles and base forms, so try to use them according to their corresponding occasions.
2. The size and shape and position accuracy of the main shaft and the splint of the equipment have a great influence on the use effect, and should be checked and adjusted before installing the saw blade. In particular, the factors that affect the clamping force and cause displacement and slippage on the contact surface of the splint and the saw blade must be excluded.
3. Pay attention to the working condition of the saw blade at any time. If any abnormality occurs, such as vibration, noise, and material feeding on the processing surface, it must be stopped and adjusted in time, and the grinding should be carried out in time to maintain peak profits.
4. The original angle of the saw blade should not be changed to avoid local sudden heating and cooling of the blade head. It is best to ask for professional grinding.
5. The saw blade that is not used temporarily should be hung vertically to avoid laying flat for a long time, and should not be piled on it, and the cutter head should be protected and not allowed to collide.
Post time: Sep-02-2022