The use of Carbide Bur
Tungsten carbide bur have a wide range of uses. They are used in machinery, automobiles, ships, chemicals, craftsmanship and other industrial sectors with significant 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.
The main features of Carbide Bur
Carbide bur mainly have the following characteristics:
(1) It can cut various materials which the hardness below HRC70, the mmaterials contain
metals (including hardened steel) and non-metallic materials (such as marble, jade, bone).
(2) It can replace the small grinding wheel with handle in most of the work, and there is no dust pollution.
(3) Production efficiency high, dozens of times higher than the processing efficiency of manual files, and nearly ten times higher than the processing efficiency of small grinding wheels with handles.
(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.
Computer numerical control machine manufacturing and manual manufacturing, of course, there are also some manufacturers that still use hand-made rotary files. The products they produce are very irregular, and they are prone to tremor, blade breakage, and increased wear during use, which cause a lot of inconvenience in operation. However, the main parameters of the rotary file produced by CNC machine, such as groove depth, groove width, groove concentration, rake angle, helix angle, etc., have high stability. The result of course is that the latter is more convenient to operate, run more smoothly, and has a better processing effect, which is the most effective overall.
Operating Instructions of Carbide Bur
Carbide bur are mainly driven by electric tools or pneumatic tools (also can be installed on the machine tool), and the speed is generally 6000-40000 rpm, when using, the tool needs to be clamped and clamped. The cutting direction should move evenly from right to left. Do not cut back and forth. At the same time, do not use excessive force. Please use protective glasses to prevent the cutting from scattering during work. Because the rotary file should be installed on the grinding machine during operation and controlled manually; therefore, the pressure and feed speed 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. Replace or sharpen the dull file head in time 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. The lubricant can be used in conjunction with the operation. Liquid wax lubricant and synthetic lubricant are more effective. The lubricant can be added to the file head regularly.
Grinding speed selection
Higher running speed is very important for the effective and economical use of round file heads. The higher running speed is also very helpful for reducing the accumulation of chips in the filing groove, and it also helps to cut the corners of the workpiece and reduces the possibility of cutting interference or wedge deviation. However, this will also increase the possibility of file shank breakage. The running speed of the carbide rotary file should be 1,500 to 3,000 surface feet per minute. According to this standard, there are many types of rotary files for grinders to choose from. For example, a 30,000-revolution grinder can choose files with a diameter of 3/16" to 3/8"; a 22,000-revolution grinder can choose files with a diameter of 1/4" to 1/2". But for more efficient operation, it is best to choose the most commonly used diameter. In addition, the maintenance of the grinding environment and the system is also very important. Assuming that a 22,000-revolution grinder often fails, it may be due to too few revolutions. Therefore, we recommend that you always check the air pressure system and sealing device of the grinder. Reasonable operating speed is indeed very important to achieve the required cutting degree and workpiece quality. Increasing the speed can improve the processing quality and extend the tool life, but it may cause the file handle to break; reducing the speed will help to quickly remove the material, but may cause the system to overheat and the cutting quality to fluctuate. Each type of rotary file must select the appropriate operating speed according to the specific operation.
