Micro-lubrication quasi-dry processing is a new type of machining method that replaces traditional cutting fluid with a small amount of lubrication, and has been applied in some enterprises. Under the condition of quasi-dry cutting, the cutting process, machine tool design, micro-lubrication device, lubricant, operation and cutting tool are different from traditional wet cutting. The theoretical basis of quasi-dry cutting is far less mature than the traditional cutting fluid metal cutting theory. The dry cutting process needs to be explored and accumulated according to the workpiece material, the selected tool and the coating, so that the technical characteristics of the quasi-dry machining can be achieved.
Dopcelio's built-in micro-lubrication unit works with air-powered precision built-in oil mist generators to produce micron-sized suspended oil particles that pass through the inner cooling channels of the machining center (ie, rotary joints, The spindle is delivered to the cutting area between the tool and the workpiece almost without loss, or it is injected into the cutting zone through the pipe and the external nozzle to participate in the machining lubrication.
In the gear processing, it is usually necessary to set three nozzles to spray the micron-sized oil mist particles into the cutting area. One nozzle keeps a certain distance to spray the rake face of the hob, and the other two nozzles are arranged on the left and right sides of the hob, the hob and the workpiece. The oil film between the contact points improves the friction between the cutting edge and the workpiece material, suppresses the temperature rise, improves the quality of the machined surface, and prevents the rust of the machined surface. The life of the hob is prolonged.
In addition to the damage caused by impurities in the workpiece material, the life of the hob is mainly caused by the repeated heating of the hob during the machining of the cutting fluid and the damage caused by the "thermal shock" formed by the cooling, which we often call " Hot brittleness." In the case of micro-lubrication quasi-dry processing, ultra-fine oil mist particles facilitate penetration into the cutting area to form an oil film (no pressure cutting fluid may not penetrate into the cutting area effectively), reducing "hob-workpiece" and "hob-chip" The friction between them acts to suppress temperature rise, reduce hob wear, prevent sticking, and improve the surface quality of the workpiece and the life of the hob.

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