The Milling Test Research On Minimal Quality Lubrication Based On Ambient Air Quality In Cutting Process

Minimal Quantity Lubrication (MQL) cutting process has the comprehensive advantage ofcooling and lubricating. So it has been widely used in modern machining field. However, thesuspending cutting mist generated during MQL deteriorates air quality of the cutting placeConsidering the security of the ambient air quality, the MQL atomization process is simulated andexperimental studied. Aiming at some problems such as the effect of MQL system parameters andcutting parameters on ambient air quality in cutting process and on machining quality, the gropingresearch is conducted in this dissertation. The main content in this paper can be summarized asfollows:(1) The atomization mechanism is theoretically analyzed. And, with the atomizationmathematical model established and the geometric model framed basing on the commercial MQLnozzle structure, the MQL atomization process is simulated by Fluent. On this basis, the effect ofdifferent gas pressure, sample distance and lubricating oil viscosityon atomization is analyzed. At last,the calculation results are verified by experiment.(2) The monitoring platform of the ambient air quality is putted up based on MQL cutting. Andthe influence on ambient air quality by system parameters of MQL (Oil consumption, gas supplypressure, injection target distance, jet temperature, spray angle) and Cutting Parameters is deeplyanalyzed. And the basis for choose sysrem parameters of MQL reasonably based on controllingcutting ambient air quality is provided.(3) Based on titanium alloy MQL milling, the effect of system parameters of MQL (Oilconsumption, gas supply pressure, injection target distance, jet temperature) on machining quality isinvestigated. And the variation of the cutting process variables (cutting force, tool wear, surfaceroughness) with MQL system parameters is also revealed.