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我厂在1981年设计制造了一台双头靠模仿形镗圆弧孔专用机床,经两年来的加工实践,证明该机加工工件内圆弧孔的加工精度较高,表面光洁度达▽5,性能可靠,操作方便,生产率也较高。加工范围如下:被加工孔径φ90～φ120mm;通孔宽度≤70mm;圆弧孔的圆弧半径R50～R85mm(见附图)。该仿形镗头的结构如图所示。它安装在4.5kW动力头的输出轴端上,由动力头带动作旋转运动;动力
I plant in 1981, designed and manufactured a double-headed by imitation contour boring arc hole machine, after two years of processing practice to prove that the machining of the workpiece within the arc hole machining accuracy, surface finish up to ▽ 5, Reliable performance, easy operation, high productivity. Processing range is as follows: be processed aperture φ90 ~ φ120mm; through hole width ≤ 70mm; arc radius of the arc hole R50 ~ R85mm (see photo). The profile boring head structure as shown. It is installed on the output shaft end of 4.5kW power head, which is rotated by power headband. Power