我厂在加工连杆的成批生产中,小头工艺孔在C630车床上车成,大头孔的粗镗及半精镗在C618车床上加工,采用的均为一般方法。效率低,劳动强度大,机床磨损快,特别是导轨部分,平均两年内要大修三次,不适应生产需要。为此,我们将C618车床改装成如图1所示的液压半自动镗床,经投产使用, I plant in the processing of connecting rod mass production, small head technology hole in the C630 lathe into a large hole in the rough boring and semi-fine boring machine in the C618 processing, using the general method. Low efficiency, labor-intensive, fast wear and tear on the machine, especially the rail part, an average of two years to overhaul three times, not suited to production needs. To this end, we will be converted into a C618 lathe hydraulic semi-automatic boring machine shown in Figure 1, after commissioning,