The typical component of plane has the bridge, muscle, costal region board, casing, wainscot, part such as contact, semifinished product is plank, forging and extruding profile. Current, the spare parts of 90% above is aluminium alloy, a few is stainless steel and titanium alloy. 5 ? ei9m? ZOJ'=2dnk5La
Main configuration cent is aircraft spare parts two kinds. One kind is long board model spare parts, be like bridge, predestined relationship, muscle and wainscot kind spare parts, length breadth ratio is old, inside, outside the predestined relationship is dimensional curved surface, form is complex. For example, predestined relationship of some model plane the spare parts is T form Bao Bi, material is profile of extruding of aluminium alloy of T body high strength, 200mm of × of 6700mm × 110mm, have the angle demand of 91.68 ° , academic appearance precision is losing 0.25mm; Mural panel is mixed on panel dismantling a wall is high strenth aluminium alloy, the longest 5600mm, the widest 750mm, the thinnest 2mm, add man-hour to still need to be held with vacuum platform clip; Machine aluminium alloy cutting of requirement high speed, because the integral wainscot such as bridge and wing is integral material,be machined and become. SR ? 8` ? ^&
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Another kind is casing body spare parts, wait like different costal region, bracket or connect. Basically be casing shape structure, form is complex, treatment amount is large. Be like connect of runner shaft of the later Liang dynasty of plane of some branch line is balance empennage is main get power, structural form is complex, semifinished product is forging, 225mm of × of 340mm of × of 420mm of over all dimension, form tolerancepublic errand 0.1mm; Costal region abdomen board semifinished product is high strenth aluminium alloy material board, 76mm of × of 260m of × of the biggest 925mm, 35mm of × of 190mm of × of the smallest 590mm, cent is bosseyed casing, double-faced casing two kinds of abdomen board, the smallest part only 0.9mm, overall material utilization factor 12% , this means the material of 88% to be excised. Storehouse the door also is casing kind spare parts, material is aluminium alloy of 7150~t7351 high strenth, × 800mm of 3100mm of × of 40mm of semifinished product dimension, also have the branch of odd, double-faced casing, still have Mengaijia is strong connect of muscle board, doorcase. W*~Xjr
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Machine efficiency to rise, aluminium alloy treatment uses high speed cutting, the requirement uses high speed machine tool, above of 15000r/min~18000r/min of main shaft rotate speed, acceleration 1g is controlled, 0.02mm of fixed position precision, machine precision 0.1mm~0.15mm, 0.3mm of the precision inside total travel. Zu"4P= KS
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In aviation industry, the application of titanium alloy is increasing, aluminous lithium alloy also begins to apply. Treatment titanium alloy requirement machine tool has enough torque and power, belong to big torque puissant cutting, ask 6000r/min of main shaft rotate speed is controlled, the machine tool should have enough stiffness and function of 5 coordinate treatment, should deploy A/b to place horny milling head or A/c to place horny milling head. The tigidity that A/b places horny milling head is good, the tigidity that A/c places horny milling head is some poorer, horn is placed to losing 25 ° when 5 axes linkage, 0.02mm of precision of machine tool fixed position. nmsl h0
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