Some things you need to know about carbide rotary burr

Until the mid-1980s, most carbide rotary files were manufactured by hand. With the increasing development of computer numerical control technology, automated machines have become popular, relying on them to carve any groove type rotary burrs, and can be adapted to the specific cutting requirements by trimming the tail end. The best-performing rotary burrs are manufactured by computer numerically controlled machines.
Tungsten carbide rotary burr have a wide range of uses. They are used in machinery, automobiles, ships, chemicals, craftsmanship and other industrial sectors with remarkable effects. The main uses are:
(1) Finish machining various metal mold cavities, such as shoe molds, etc.
(2) All kinds of metal and non-metal craft carving, craft gift carving.
(3) Clean up the flash, burr and weld of casting, forging and welding parts, such as machine foundry, shipyard, automobile factory, etc.
(4) Chamfer rounding and groove processing of various mechanical parts, pipe cleaning, and finishing of the inner hole surface of mechanical parts, such as machinery factories, repair shops, etc.
(5) Trimming the part of the impeller runner, such as automobile engine factory.
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Cemented carbide rotary burr mainly have the following characteristics:
(1) Various metals (including hardened steel) and non-metallic materials (such as marble, jade, bone) below HRC70 can be cutted
(2) It can replace the small grinding wheel with handle in most of the work, and there is no dust pollution.
(3) High production efficiency, dozens of times higher than the processing efficiency with manual files, and nearly ten times higher than the processing efficiency with a small grinding wheel with a handle.
(4) The processing quality is good, the smoothness is high, and the high-precision mold cavities of various shapes can be processed.
(5) Long service life, ten times more durable than high-speed steel cutters, and more than 200 times more durable than alumina grinding wheels.
(6) It is simple and convenient to use, safe and reliable, which can reduce labor intensity and improve the working environment.
(7) The economic benefit is greatly improved, and the comprehensive processing cost can be reduced by dozens of times.
Operating instructions
Carbide rotary files are mainly driven by electric tools or pneumatic tools (also can be installed on machine tools). The speed is generally 6000-40000 rpm. When using, the tool needs to be clamped and clamped. The cutting direction should be from right to left. Move evenly, do not cut reciprocatingly, and do not use excessive force at the same time. To prevent the cutting from scattering when working, please use protective glasses.
Because the rotary file must be installed on the grinding machine during operation and manually controlled; therefore, the pressure and feed rate of the file are determined by the working conditions and the experience and skills of the operator. Although a skilled operator can control the pressure and feed speed within a reasonable range, it is still necessary to explain and emphasize: First, avoid applying too much pressure when the speed of the grinder becomes smaller. This will cause the file to overheat and become blunt; secondly, try to make the tool contact the workpiece as much as possible, because more cutting edges can penetrate into the workpiece, and the processing effect can be better; finally, avoid the file shank part Contact with the workpiece, because this will overheat the file and can damage or even destroy the brazed joint.
It is necessary to promptly replace or sharpen the dull file head to prevent it from being completely destroyed. The blunt file head cuts very slowly, so the pressure of the grinder has to be increased to increase the speed, and this will inevitably cause damage to the file and grinder, and the cost of the loss is much greater than the replacement or heavy blunt The cost of filing heads.
Lubricants can be used in conjunction with the operation. Liquid wax lubricants and synthetic lubricants are more effective. Lubricants can be regularly dripped onto the file head.


Post time: Sep-09-2021