论文部分内容阅读
为了能在立式测长仪上进行正确合理的测量,本文专门讨论测帽轴线与端平面不垂直而引入的测量误差。一、测帽误差的影响测帽的正确性,按检定规程规定,直径等于或大于8毫米的平面测帽,其孔的轴心线与端平面不垂直不应超过β=3′,又规定工作台表面与测量轴运动方向不垂直,允许偏差α=1′。当平面测帽安装到测量轴上时,如测帽的端平面与工作台表面不平行,势必产生一个很小的夹角。这一夹角的存在,将导致仪器对零时测帽平面与工作台表面不是面接触,而是点
In order to be able to make a correct and reasonable measurement on a vertical length measuring instrument, this article focuses on the measurement error introduced by the fact that the axis of the measuring cap and the end surface are not perpendicular to each other. First, the impact of cap error Test cap accuracy, according to test procedures, the diameter equal to or greater than 8 mm flat cap, the hole axis and the end plane is not vertical should not exceed β = 3 ’, and provides Workbench surface and measuring axis movement direction is not vertical, allowing the deviation α = 1 ’. When the flat cap is installed on the measuring axis, if the end cap of the cap is not parallel to the surface of the workbench, a small angle will inevitably result. The existence of this angle will cause the instrument to zero cap surface and the table surface is not in contact, but the point