平面测帽测量轴线与测量面垂直性偏差的简便检定方法

• 作 者: 刘军
• 机 构: 湖北省计量局,
• 出 处: 计量工作
• 发表日期: 1977年05期
• 关键词: 垂直性 光学计 尾管 测量轴 检定方法 测长仪 偏差 平面 微米 测量面

在卧式光学计(或测长机、卧式测长仪)的尾管上装上被检测帽,在光学计管上装上直径大于(或等于)被检测帽的参考测帽,用尾管调整部件将二测帽调整平行,从光学计管中读出一个读数,然后将被检测帽旋转180°,再读出一个读数。按下列公式计算被检测帽的垂直性偏差:δ=dtga,(1)式中,δ为两次读数之差,d为平面测帽工作面的直径,α为测帽的垂直性偏差。若 d 以毫米计,则α不超过3′时,δ不超过0.87d 微米,α不超过5′

In the horizontal optical meter (or length measuring machine, horizontal length gauge) of the tail pipe fitted with the cap under test, fitted with a diameter greater than (or equal to) the cap is the reference test cap, with the tail pipe adjustment The assembly adjusts the two caps in parallel, reads a reading from the tube, and then rotates the cap by 180 ° and reads one more reading. The vertical deviation of the tested cap is calculated by the following formula: δ = dtga, (1) where δ is the difference between two readings, d is the diameter of the working surface of the flat cap and α is the vertical deviation of the cap. If d is in millimeters, then, when a does not exceed 3 ’, δ does not exceed 0.87 d micrometres and α does not exceed 5’