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柴油机喷油嘴喷孔加工的尺寸、位置精度,表面粗糙度以及喷孔内口毛刺、夹角等对整机的动力性能、功率、油耗和排放等均有严重影响。国外采用专用的喷孔加工机床进行加工,喷孔尺寸精度,位置精度高,自动化程度也高,表面粗糙度小,对加工后的喷孔采用专用检查镜逐一检验,并用专用检测装置检验喷孔位置和流量。而国内一般油嘴厂采用高速台钻,专用夹具手工操作钻孔,喷孔的尺寸与位置精度
The size, position accuracy, surface roughness and burr and angle of inner orifice of diesel injection nozzle have serious influences on the dynamic performance, power, fuel consumption and emissions of the whole machine. Foreign special use of the hole processing machine for processing, the nozzle hole size accuracy, high position accuracy, high degree of automation, surface roughness is small, the use of special inspection after processing the nozzle one by one inspection, and with special testing equipment to test the nozzle Location and traffic. The domestic general purpose nozzle plant using high-speed bench drill, special fixture manual operation drilling, nozzle size and position accuracy