Experimental Study On Laser Cutting Technology Of Tail Wing Of High Speed Aircraft

The rear wing of a high-speed aircraft is an important part of a precision guided and intelligent weapon,The function is to provide lift for the projectile flight,produce the stable moment,and ensure the stability of the projectile flight? The manufacturing of tail wing is an important part of defense industry system,and its importance is self-evident.at present,the main processing way of the tail wing is the electric spark wire cutting technology.although the processing quality is guaranteed,the processing efficiency is too low to meet the demand of mass production,and the laser processing technology has the advantages of fast processing,high efficiency,low cost and high material utilization.Therefore,laser cutting technology can be used instead of traditional EDM cutting technology to manufacture tail wing.In this paper,Q235 carbon steel is studied,based on the CW-3000-MM-K type pulse laser provided by Shandong Lei Ze Intelligent Technology Limited the influence of cutting speed and auxiliary pressure on surface morphology,surface roughness and side perpendicularity of 4mm sheet was studied,and the optimum process parameters were obtained;For the study of the effect of plate thickness on cutting quality,the influence of 6 mm?8mm?10mm thickness plate cutting speed and auxiliary air pressure on surface morphology,surface roughness and side perpendicularity was added.The results show : There is a positive correlation between surface roughness,side perpendicularity,and they have a negative correlation with the quality of surface morphology.The surface morphology quality increases first and then decreases with the increase of cutting speed,increases first and then decreases with the increase of auxiliary air pressure,and decreases with the increase of plate thickness;The surface roughness decreases first and then increases with the increase of cutting speed,decreases first and then increases with the increase of auxiliary air pressure,and increases with the increase of plate thickness;The lateral perpendicularity decreases first and then increases with the increase of cutting speed,decreases first and then increases with the increase of auxiliary air pressure,and increases with the increase of plate thickness.The optimum technological parameters of each plate thickness were obtained: The optimum process parameters of 4 mm plates are v=2.0 m/min,P=0.5 Bar,at which time the minimum surface roughness is 0.920 ?m and the minimum side perpendicularity is 0.031 mm;The optimum process parameters of 6 mm plates are v=2.2 m/min,P=0.5 Bar,at which time the minimum surface roughness is 2.766 ?m and the minimum side perpendicularity is 0.08 mm;The optimum process parameters of 8 mm plates are v=1.6 m/min,P=0.6 Bar,at which time the minimum surface roughness is 2.799 ?m and the minimum side perpendicularity is 0.1 mm;The optimum process parameters of 10 mm plates are v=1.5 m/min,P=0.5 Bar,at which time the minimum surface roughness is 2.943 ?m and the minimum side perpendicularity is 0.13 mm.Compared with the traditional EDM,laser cutting can achieve the production technical index,and greatly improve the production efficiency,can meet the demand of mass production,and has a certain guiding role for the later processing and manufacture of the tail wing of high speed aircraft.