Study on the influence rules of static mechanical errors in four-linkage precision measuring instrument and the realization of real-time error correction with computer-aided modeling method

Static mechanical error is a key factor that must be taken into account for multi-axis measuring equipments in precision measurement. Many static mechanical error sources are analyzed in the paper with computer-aided modeling method, and the error correction method is also discussed based on error modeling. Based on the above mentioned mathematical models, a computer four-axis virtual analysis platform is developed using computer simulation techniques in this paper, which verifies the real-time error correction function of the four-linkage mechanism and the measuring path. The study of this paper uses the computer-aided modeling method to analyze the measured results of the tooth surface of the spiral bevel gear, and some experiments are carried out to find out the differences between the results that have been corrected and the ones haven´t been. The computer four-axis virtual platform system can provide an accurate and reliable way for the static error analysis of four-linkage mechanism, and with this study, an effective way to evaluate the uncertainty of the measurement is provided.