床身刮研时,先刮V形导轨A1两面,水平仪作为半精测量,光学平直仪作为精测量。垂直面内和水平面内的直线度要求0.005mm/1000mm,0.01mm/全长。垂直面内( ),刮研点数(20~22)点/(25mm×25mm)。A.只许内凹B.不许外凸C.只许外凸D.不许内凹
床身刮研时,先刮V形导轨A1两面,水平仪作为半精测量,光学平直仪作为精测量。垂直面内和水平面内的直线度要求0.005mm/1000mm,0.01mm/全长。垂直面内( ),刮研点数(20~22)点/(25mm×25mm)。
A.只许内凹
B.不许外凸
C.只许外凸
D.不许内凹
相关考题:
床身刮研时,刮平导轨Ao以A1导轨为基准测量两导轨的扭曲度,在专用桥板上放水平仪,要求( ),直线只许中凸,要求直线度0.005mm/1000mm,0.01mm/全长。A.0.002mm/1000mm,0.01mm/全长B.0.003mm/1000mm,0.015mm/全长C.0.005mm/1000mm,0.01mm/全长D.0.004mm/1000mm,0.02mm/全长
2.用水平仪测量导轨在垂直平面内直线度误差,属 测量法。