Influence of Flexible Body Contact Deformation on the Linear Dimension Measurement Precision

Abstract

The common measurement error when measuring the component geometrical dimensions using universal contact measurement instruments is caused by different factors, such as error of the measurement instrument, personal reading errors, effect of surface roughness on the measuring line deviation, influence of contact deformation measurement force, and others. The present article examines one of these factors, i.e. contact deformations under the influence of measurement force. To make precise measurements it is essential to find out the effect of roughness of measured components. High roughness creates additional measurement errors. It is particularly important in the measurement of thin components, flexible materials and films, as well as for components with nanocoating. Flexible bodies in the meaning of this article are components of different shape and sizes made of rubber or soft plastic. This article studies principles of error formation based on the deformation of surface roughness and basic material.

Research into the 3d roughness of a rough surface

“…In previous works [1,2] the roughness deformation is measured from the top, while in the relevant statistics all roughness parameters are measured from the 63 mid-plane. The roughness deformation diagram is presented in Fig.…”

The Elastic Deformation of Machine Elements in Mechatronics Systems

“…In previous works [1,2], roughness deformation is being marked as a, was measured from the top; in their turn, in the roughness parameter statistics theory, all roughness parameters are being measured from the middle plane. The roughness deformation diagram is presented on Figure 1, showing the relation between deformation a i and the height of the deformed peak h p (u), measured from the level u.…”