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为了生产扬程高、流程大的潜水电泵,需要加工外径φ200毫米,内径φ167毫米,长度1100毫米,材料为A_3的无缝钢管来作为配套电机壳。过去加工是在T618卧式镗床上采用浮动镗削进行。这样,一则跨度大、刚性弱、加工时摆动大、光洁度达不到要求;二则是镗杆直径受到主轴孔及床尾支架轴承孔的限制,使杆颈细,转速不能高,光洁度低,而且也加大了成本,不利于支援农业。为了立足现有设备,走挖潜、革新、改造的道路,我们在
In order to produce submersible pump with high head and large flow, it is required to process seamless steel tube with outer diameter of φ200 mm, inner diameter of φ167 mm and length of 1100 mm, and the material is A_3. In the past, the machining was carried out by floating boring on the T618 horizontal boring machine. In this way, a span of large, weak rigidity, processing swing large, finish less than the requirements; the second is the diameter of the boring bar by the spindle hole and the bed tail bearing hole restrictions, so that the hosel is fine, the speed can not be high, But also increased the cost, not conducive to supporting agriculture. In order to base ourselves on the existing equipment and take the road to tapping potential, reforming and transforming, we are here