一般车(?)弧工具由蜗轮、蜗杆、拉杆、链条、齿轮和齿条等形式传动。我们在立式车床上,半精车和精车50吨米自升塔吊回转齿圈上的R18圆弧滚道时,自制了拉线式车圆弧工具,获得较好效果。工具结构如图2所示。刀片3(YT15、F209)装在刀盘1内,由螺钉2固定,加工R的大小可由刀片的伸缩来调节。螺钉5由内六角紧固螺钉改车成60°锥端, General car (?) Arc tool by the worm, worm, rod, chain, gear and rack and other forms of transmission. When we R18 circular arc raceway on the vertical lathe, semi-fine car and fine car 50-ton rice self-elevating tower crane revolute gear ring, we made a self-made wire car arc tool to get better results. Tool structure shown in Figure 2. The blade 3 (YT15, F209) is installed in the cutterhead 1 and fixed by the screw 2. The size of the machining R can be adjusted by the retraction of the blade. Screw 5 screws from the hexagonal screw to change into a 60 ° cone end,