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近来我公司承接了一批如图1所示的工件。材质为QT500-7,上面有4个φ80 mm深120mm的盲孔需要加工。由于工期紧、批量大,我们采取了下面的镗孔方法。
Recently, my company to undertake a number of the workpiece shown in Figure 1. Material for the QT500-7, above the four φ80 mm deep 120mm blind holes need to be processed. Due to the tight schedule, large quantities, we have taken the following boring method.