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我厂生产的各种型号镗床,其镗轴尺寸可达φ200×2800mm)、重量大,为保证镗床加工精度,对镗轴给出了较高的素线直线度公差要求。其误差采用指示器法和水平仪法均难达到理想测量精度。为了解决这一问题,我们设计了90°双圆柱桥板,用准直仪按节距法进行测量,效果很好。双圆柱桥板如图1所示,规格分为三种,L=100,200,300,其它尺寸也可相应放大缩小,但其宽度不能
I plant the production of various types of boring machine, the boring shaft size up to φ200 × 2800mm), weight, in order to ensure the boring machine processing accuracy, given the boring axis of the higher plain line straightness tolerance requirements. The error using the indicator method and the level of law are difficult to achieve the ideal measurement accuracy. In order to solve this problem, we designed a 90 ° double-cylinder bridge plate, measured by collimator pitch method, the effect is very good. Double cylindrical bridge shown in Figure 1, the specification is divided into three, L = 100,200,300, other sizes can also be enlarged, but its width can not