Simulation Model for Correction and Modeling of Probe Head Errors in Five-Axis Coordinate Systems

Abstract

Simulative methods are nowadays frequently used in metrology for the simulation of measurement uncertainty and the prediction of errors that may occur during measurements. In coordinate metrology, such methods are primarily used with the typical three-axis Coordinate Measuring Machines (CMMs), and lately, also with mobile measuring systems. However, no similar simulative models have been developed for five-axis systems in spite of their growing popularity in recent years. This paper presents the numerical model of probe head errors for probe heads that are used in five-axis coordinate systems. The model is based on measurements of material standards (standard ring) and the use of the Monte Carlo method combined with select interpolation methods. The developed model may be used in conjunction with one of the known models of CMM kinematic errors to form a virtual model of a five-axis coordinate system. In addition, the developed methodology allows for the correction of identified probe head errors, thus improving measurement accuracy. Subsequent verification tests prove the correct functioning of the presented model.

Mathematical models for estimating the degree of influence of major factors on performance and accuracy of coordinate measuring machines

“…The solution of this problem is devoted to leading companies and scientists [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. They generally, relate to the technological problems of building new types of measuring machines.…”

Assessment of the Impact of Probe Head Hysteresis on the Accuracy of Five-Axis Coordinate Measuring Systems

“…It is only one of many questions arising around the issue of five-axis measuring systems accuracy. Because they are relatively new solution there are only few papers devoted to this topic, which are focused on such problems as influence of the angular orientation of the stylus on the probe errors [4] or influence of stylus length on measurement accuracy [3]. Another important factor which may affect the accuracy of five-axis measurements is probe head hysteresis.…”

Challenges for Modeling of Five-Axis Coordinate Measuring Systems

“…In [1], the authors of this paper presented the state-of-the-art regarding the five-axis measuring systems and simulation methods used for determination of measurement uncertainty. The simulation model for correction and modeling of probe head errors in five-axis measuring systems was proposed.…”

“…As was shown in [1], there are almost none publications regarding five-axis measuring systems which use probe heads with continuous articulation. There are some works dealing with five-axis systems but they deal mainly with CNC machining centers [2][3][4] or with CMMs with rotary tables [5] and are devoted to modeling of kinematic errors of these systems.…”