【摘要】 针对线性摩擦焊后风扇叶片的结构特点及加工工艺难点，制定了焊后叶片的加工工艺路线，通过预留非均匀余量和采用同步半精铣-精铣加工方法，减少了加工过程中的让刀；采用前后缘-叶身一体对称加工方法，解决了单面铣削加工中存在的变形过大问题；最后对线性摩擦焊后叶片进行了数控加工试验。结果表明，精铣后叶片表面粗糙度可以达到R_a0.54μm，叶片轮廓度、位置度和扭转度等满足图纸要求，可有效提高线性摩擦焊后叶片加工精度和表面质量。更多还原

【Abstract】 According to the structural characteristics and machining process difficulties of fan blade after linear friction welding, the machining process route of fan blades after welding was formulated. The tool yield in the machining process was reduced by reserving non-uniform allowance and using the method of semi finish milling and finish milling synchronous machining. The problem of excessive deformation in single-sided milling was solved by using the symmetrical machining method of front and rear edge blade bodies. Finally, the trial cutting experiment of the welded blade was carried out. The experiment results show that the surface roughness of the blade after finish milling can reach 0.54 μm. The profile, position and torsion of the blade can meet the delivery requirements. The above process method can effectively solve the machining accuracy and surface quality problems of the blade after welding.更多还原