我厂是生产齿轮的专业厂,尤以手扶拖拉机齿轮为主,其中有不少双排齿链轮,如图1所示。以前只用图2所示的R角规检验其R角。R角规虽然能检验R角的大小是否符合要求,但却不能检验4个R角相对于链齿齿宽中心线的对称情况,结果产生次品较多。对此我设计了图3、图4所示的量规,既能检验R角大小, Our factory is specialized in producing gear factory, especially walking tractor gears, of which there are many double-row tooth sprocket, as shown in Figure 1. In the past, only R angle shown in Figure 2 test R angle. Although the R angle gauge can test whether the size of the R corner meets the requirements, it can not test the symmetry of the four R angles relative to the center line of the tooth width of the tooth, resulting in more defective products. In this regard, I designed the gauge shown in Figure 3, Figure 4, R angle can check the size,