Study on reducing deviation of transportable type long size gauge measuring instrument

Abstract

Transportable type long size gauge measuring instrument was equipped some advantage points as low bending influenced own weight, it can be moved therefore to perform CTE measuring in several temperature setting room. Measuring size deviation was reduced to occur vibration for carriage moving on the guide and probing deviation etc. As a result, the repeatability deviation was σ0.0020mm (L=2850mm, n=15), and the average difference from the gauge was -0.0056mm (L=850mm, n=18).