图1所示工件内圆弧面,如利用镗床加工,由于受到行程限制而不易实现。为此,采用龙门刨床,并附加如图2所示刨内圆弧面装置进行加工。实践证明,效果较好。本装置由齿轮2、底座4、蜗杆5、蜗轮6等组成。蜗杆5、蜗轮6固定在底座4上。底座安装在刨床刀架3上。由图2可知,进给运动由龙 Figure 1 shows the inner surface of the workpiece, such as the use of boring machine processing, due to travel restrictions and difficult to achieve. To this end, the use of gantry planer, and attached as shown in Figure 2 planing surface circular arc device for processing. Practice has proved that the effect is better. The device consists of gear 2, base 4, worm 5, worm 6 and other components. Worm 5, worm gear 6 is fixed on the base 4. Base mounted planer knife 3. From Figure 2 we can see that the feed movement by the dragon