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使用金刚石或相类似的切削材料(例如立方氮化硼)对于镗孔工序来说,并非容易之事。 从对工件尺寸和几何精度及加工表面质量的要求愈来愈高的角度考虑,这类刀具与精密机床配合应用才能满足要求。 古什姆机床厂根据订货向苏联提供了大量的精镗活塞孔用的金刚镗床。加工φ50_(-0015)~(-006)毫米活塞销孔,要求其最大的不元度为0.0025毫米,加工表面光洁度Ra=0.63微米。
The use of diamond or similar cutting material (such as cubic boron nitride) is not an easy task for the boring process. From the workpiece size and geometric accuracy and processing of surface quality requirements of higher and higher point of view, such tools and precision machine tools to meet the application requirements. Qushimu Machine Tool Plant according to the order to the Soviet Union provided a large number of fine boring piston hole with diamond boring machine. Processing φ50 _ (- 0015) ~ (-006) mm piston pin hole, requiring the greatest degree of non-degree is 0.0025 mm, the processing surface roughness Ra = 0.63 microns.