Carbide Cutting Tool Advantages And More Widely Used
1 Carbide Cutting Tool Features
The so-called hard alloy is a high hardness of refractory metal carbide and a specific binder sintered powder metallurgy products. Its heat resistance is good, capable of up to 800 ~ 1000 ℃ cutting temperature. At the same time because of the high hardness of carbide cutting tools, sharpness, wear resistance, durability than high-speed steel tool, its shape is more high-speed steel can not be compared, and the other. Carbide Cutting Tool long life, good processing quality, high precision, so in the furniture and wood, building materials processing industry has been widely used carbide cutting tools for wood processing, cutting all kinds of wood, plywood, particleboard, high school MDF, man-made Marble, steel, aluminum and other different materials, which can not only rough can also be processed, not only can be used for processing all kinds of plate, but also can be used for processing all kinds of materials, veneer sheet.
2 types of carbide cutting tools, selection and grinding
Although the advantages of carbide cutting tools and more widely used, but with a variety of veneer sheet, man-made sheet, the increase in the type of building materials, as well as the different requirements of each manufacturer must choose the appropriate carbide cutting tools to adapt to different Cutting materials and different product quality requirements.
2.1 According to the quality and processing, carbide cutting tools can be divided into high, medium and low three grades.
2.1.1 high-grade carbide cutting tools
Mainly including Germany, Japan, Italy and other countries produced a few brands, which are characterized by:
As a result of the use of alloy quality, the production of most of the use of laser cutting, so the blade is smooth and can be used continuously for many years, both durable, life of ordinary domestic tools 4 to 5 times;
All the cutting edge of the tool by the automatic CNC grinding equipment according to the scheduled process to produce a completely consistent wire contour, the end of the electronic centrifugal balance adjustment, the knife shaft hole after grinding, can achieve a smooth and no vibration of the cutting, and thus high precision, High precision, good finish, cutting a molding, no longer trimming, can completely solve the wood, plywood, particleboard, medium density board flash, veneer board gnawing edge, collapse edge, paste edge and other wood processing industry common Kind of problem;
Easy to use when used, light, told the operation of the tool is not deformed, low noise design, and can effectively discharge chips and dust;
The price is more expensive, generally used for high quality requirements of the plate, furniture processing.
2.1.2 mid-range carbide cutting tools
Mainly including Italy, Japan and other countries wholly-owned, joint venture of many brands and the domestic brands, which are characterized by:
Durability is better, the alloy is stable, but the life and sharpening times as high-grade cutting tools;
Disc body balance, saw the road is accurate, better finish, the basic can guarantee that the veneer sheet does not collapse requirements, but the quality of cutting as high-grade cutting tools;
Easy to use, easy operation, high cutting efficiency;
Affordable, and therefore widely used, the current demand in the domestic market the largest.
2.1.3 low-grade carbide cutting tools
Mainly including the domestic production of cutting tools, which is characterized by:
Generally not durable, easy to wear alloy, the service life is relatively short;
Finish is not very good, especially not suitable for sawing plywood;
Low price, suitable for rough processing of sheet metal.
2.2 According to the performance Carbide Cutting Tool is divided into saw blade, drill type, cutter category
2.2.1 Saw blades
For the cutting of various types of plates, sawing in the 2 ~ 6mm ordinary saw blade, but also saw the road in the 2mm about the ultra-thin saw blade. Which is extremely difficult to produce ultra-thin saw blade, only a few manufacturers can produce. Its advantages are small sawing losses, high utilization of wood, sawdust less, environmental pollution, sawing the surface can be used directly for the use of adhesive or sealing edge.
According to the saw blade cutting edge (carbide) shape that tooth, can be divided into the following forms:
Flat teeth: the flat top shape, a more common tooth profile, for sawing solid wood sheet. It is characterized by a contact pressure will have a top split effect, so slotted saw commonly used this tooth shape. This tooth-shaped saw blade price is low, easy to repair saw, the shortcomings of rough sawing, cross-cutting when the power consumption of large. Now the precision of the table saws in the double-line scissors are also used flat teeth, for the pre-cut melamine double plywood, placed in the sawing veneer to produce subsidence, reduce the quality of sawing;
Left and right teeth: that is, cross oblique tooth, a left and right helical gear combination, is the most commonly used saw blade. If the rake angle is 10 ° or 20 °, it is especially suitable for sawing solid wood (including soft material, hard material, wet material, dry material) and man-made plate transverse sawing and grooving, The surface is not easy to crack, along the direction of wood grain sawing, power consumption is low. If the front angle of about 40 °, easier to cut plywood melamine plywood;
Trapezoidal teeth: the use of a wide range of wood processing tooth profile. Throughout the sawing process, the surface contact stress along the three-dimensional three-dimensional direction in the plate evenly distributed, regardless of sawing solid wood or wood-based panels, have a high efficiency. In the application, in the same blade in the trapezoidal teeth and flat teeth are often used in combination, followed by staggered, said ladder flat teeth. Trapezoidal teeth in the blade diameter 0.3mm higher than the flat teeth, sawdust is divided into three parts, so saw the surface of wood-based panel smooth, easy to crack the board, especially for single and double veneer sawing, including Melamine veneer and veneer, PVC veneer particleboard, plywood, MDF, etc .;
The trapezoidal tooth: This tooth is often used in precision sawing saws in a single scribe line, in the sawing of the veneer sheet to ensure that the edge does not collapse, broken, the back plate does not dregs. Scribe saw the bottom surface of the plate, and then have the main saw blade to complete the entire sawing process. Scribing saw with the main saw the opposite direction of rotation, the first formation of the slot to ensure that the side of the saw material will not tear, the formation of burrs;
Left and right cross oblique teeth and flat teeth combination: into the left and right flat teeth. This tooth profile is specially designed for sawing high quality solid wood, generally used in the manufacture of piano manufacturers. It has the advantages of both flat and crossed helical teeth, effectively dispersing the surface contact stress, cutting the workpiece surface quality is good, but the drawback is the higher cost of tooth and repair teeth;
Bevel profile: commonly known as the side of the inverted tooth, for short head of the edge or slope processing, often with the symmetrical tilt of the slope of the joint use. Operation of this slope in a direction of the slope of the profile of the saw blade to be particularly careful not to cause the saw is not straight. If the saw blade is of the usual thickness of the saw blade, it can not guarantee sufficient lateral strength, and the sawing amount should not be too large, otherwise the sawtooth will crush the material on the saw surface. This kind of tooth saw blade is most suitable for use in the edge banding machine cut or cut more than the edge of the material;
Cavity arc: To obtain the best saw blade quality. Since the surface contact pressure is dispersed in the radial direction along the front of the sawtooth. So the sawing smooth, there will be no tear and other defects, the drawback is the high cost of manufacturing, jagged in front of the more brittle, vulnerable after the impact, sawing wood or wood cuttings easy to maintain, repair teeth need high precision Grinding wheel and grinding machine. This type of tooth is particularly suitable for sawing veneer veneer and a thin sheet with a brittle facing material;
Inverted V-shaped: this tooth is particularly suitable for cutting the particleboard. It is characterized by the ability to effectively disperse the surface contact stress of the saw, the processing of the special surface is often combined with the flat teeth. The sawtooth is located about 0.015 inches below the inverted V-shaped saw blade and completes the portion of the inverted V-shaped saw blade after cutting. The advantage of this saw is the flat-toothed saw blade to share the inverted V-shaped saw blade in line, so that sawing smooth, Sawang smooth, straight.