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我厂生产的东风—12型柴油机连杆(图1),其φ16mm 孔是连杆体与连杆盖的装配孔,习惯上称为定位孔。该孔几何精度、光洁度、形位公差要求较严,特别是两孔的中心距要求更严。为保证精度要求,我厂设计、制造了连杆定位孔精镗床,现介绍如下。连杆定位孔精镗床(图2),由床身拖板、镗头、夹具、液压站、电气柜等部件组成。床身是用旧车床(C618或C615)床身改造的。
I produced the factory Dongfeng -12 diesel engine connecting rod (Figure 1), the φ16mm hole connecting rod body and connecting rod cover assembly hole, used to be known as the positioning hole. The geometric accuracy of the hole, finish, form tolerance requirements more stringent, in particular the center of the two holes away from the more stringent requirements. To ensure the accuracy requirements, I plant design, manufacture of connecting rod positioning hole fine boring machine, are described below. Connecting rod positioning hole fine boring machine (Figure 2), by bed bed, boring head, fixtures, hydraulic station, electrical cabinets and other components. The bed was remodeled with an old lathe (C618 or C615) bed.