How to choose and use carbide saw blades correctly
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How to choose and use carbide saw blades correctly
1) How to choose a saw blade correctly?
1. Basic data: ①The speed of the main shaft of the machine, ②The thickness and material of the workpiece to be processed, ③The outer diameter and diameter of the saw (shaft diameter)
2. Selection basis: Calculated from the spindle rotation number and the outer diameter of the saw blade to be matched, the cutting speed: V=π×outer diameter D×rotation number N/60 (m/sec). The reasonable cutting speed is generally 60-90m/ second,
The cutting speed is too high, 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 power functions, in practical applications, it is most economical to increase the speed reasonably and reduce the diameter of the saw blade.
- Quality-price ratio: As the saying goes: “cheap is not good, good goods are not cheap”, which may be true for other commodities, but it may not be the case for cutting tools; the key is matching. Many factors on the job site: such as equipment sawing objects, quality requirements, and personnel quality. Carry out a comprehensive assessment, wisely choose the best use of things, just right, to save expenses, reduce costs, and participate in industry competition. This depends on the mastery of professional knowledge and understanding of similar product information
2)How to choose a saw blade correctly?
1. For saw blades of different specifications and purposes, the angle of the blade head and the form of the base body are different, so try to use them according to their corresponding occasions;
2. The size and shape and position accuracy of the main shaft and splint of the equipment have a great influence on the use effect. Check and adjust before installing the saw blade. In particular, the factors that affect the clamping force on the contact surface of the splint and the cutting saw blade and cause displacement and slip must be eliminated;
3. Pay attention to the working condition of the saw blade at any time, if there are abnormalities, such as vibration, noise, and the processing surface, it must be shut down and adjusted in time, and timely repaired to maintain peak profit;
4. The sharpening of the saw blade must not change its original angle to avoid local sudden heating and cooling of the blade. It is best to ask for professional sharpening
5. Saw blades that are not used for the time being should be hung vertically to avoid laying them flat for a long time, not to mention piles of objects on them, and the blades should be protected from collision.
6. The equipment itself should have good mechanical properties, be firmly installed and fixed, without vibration, etc.;
7. The surface of the flange should be clean, flat, and perpendicular to each other.
8. The diameter of the flange should be equal to or greater than 1/3 of the diameter of the saw blade used. If the flange is too small, even if the best saw blade on the market is used, unsatisfactory results will occur.
9. The main shaft of the mechanical equipment should be flat, straight, and the tolerance should not be lower than the national standard. The national standard for the tolerance of the main shaft is 0.01mm.
10. The carbide saw blade is insensitive. It should be sharpened in an emergency. A diamond wheel with a suitable particle size should be selected for sharpening, and coolant should also be used in conjunction with it; after sharpening, the original cutting angle of the saw teeth should be maintained. Grinding and adjustment should be done at the same time to achieve satisfactory results. At present, there are many grinding equipment on the market, and the accuracy and grinding conditions of the equipment themselves are not up to the requirements, let alone good products.
11. Before using a new or sharpened saw blade, it should be idling for one cycle, and then check whether the saw blade is installed firmly to prevent the saw blade from slipping.
12. The saw blade reaming should not exceed the original aperture of 15mm. Because each saw blade manufacturer has adjusted the saw blade stress according to its diameter before the saw blade leaves the factory, otherwise it will cause loss of tension and the cutting effect of the saw blade will be affected. .
13. Choosing a reasonable number of teeth is more conducive to the cutting effect and the extension of the service life of the saw blade.
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