有一种零件(见图1),其上φ70毫米的圆弧面需要在牛头刨床上加工。过去因为没有专用工具要全靠手来赶制圆弧,生产效率很低、加工质量很差,一直不能满足生产要求。最近,刨工组的同志开动了脑筋,利用旧物、废料拼凑了一个刨圆弧面的工具。经使用,效果很好,既保证了质量,又提高了效率。这个工具(见图2)结构简单,使用轻便。图中1是工字形的铸铁底座,可固定在牛头刨床 There is a part (see Figure 1) on which a circular arc of φ70 mm needs to be machined on a shaper. In the past because there is no dedicated tool to fully rely on the circular arc, low productivity, processing quality is poor, has been unable to meet production requirements. Recently, planing group comrades started their brains, the use of old objects, scraps put together a circular arc tool. After use, the effect is good, both to ensure the quality, but also improve the efficiency. This tool (see Figure 2) is simple in construction and light in weight. Figure 1 is the I-shaped cast iron base, can be fixed in the shaper