As we all know, in mechanical processing, holes with a ratio of hole depth to hole diameter are generally called deep holes. In deep hole drilling, heat dissipation and chip removal are two major problems that affect deep hole processing. The drill pipe of deep hole drilling is relatively thin. It is long, has poor rigidity, and is prone to bending and vibration during processing. Therefore, a good lubrication and cooling system must be equipped to solve lubrication, cooling and chip removal.
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Deep hole drilling can be solved by quasi-dry processing. This lubrication and cooling method can not only better lubricate the drill bit, allow cooling and chip removal at the same time, but also It is convenient and very energy-saving and environmentally friendly. This method of processing lubrication has been developed in the automotive machinery cutting industry for many years. It was first applied at Ford Company and completely replaced the traditional cutting fluid. The development of dry processing and the development of tool technology complement each other. The use of dry processing in high-speed processing can also greatly reduce environmental pollution and human respiratory system damage.
Dry machining of deep hole drilling is different from the traditional cutting fluid circulation system. Traditional cutting fluid makes the environment humid and will breed a large number of bacteria and microorganisms. Dry machining uses minimum quantity lubrication. The fluid is a total loss type, and the lubricant used is clean and environmentally friendly. There is no need to add additional anti-pollution additives at all. In addition, the amount of lubricating fluid used is greatly reduced, and the workpiece and waste chips are dry, which greatly reduces the health hazards caused by atomization of metal cutting fluid. There is no cutting fluid inside and outside the machine tool, and the working environment is very clean.
The quasi-dry processing of deep hole drilling uses compressed air as power. The lubricant is atomized into extremely small particles through an atomizing device, and then the compressed air is transported to the drill bit. This lubrication method reflects quickly.
Among the quasi-dry machining devices for deep hole drilling, the more reliable one is Beijing Peifeng Company’s Menkedi type II minimum quantity lubrication system, which uses very advanced oil suspended particle generation technology to perfectly solve quasi-dry machining. The fine oil mist () provided by this innovative device uses the penetrating power of compressed air to shoot to the cutting points of machining to achieve lubrication, cooling, assisted chip removal, and protection of workpieces. Machine tools already equipped with cutting fluid devices can also easily assemble this system to achieve quasi-dry machining.
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