Research on Non-Contact Measurement Method of the Radial Circular Run-out Error of the Shaft Parts
At present, in view of a bridge shell axial parts artificially by dial indicator to measure the radial problem of low precision .This paper proposes to use a frequency domain three-point method of shaft parts’ non-contact laser measurement. It mainly includes the establishment of the design of the measurement model, the data collection, the data analysis and the data display system. The feasibility of the scheme is verified by a case. It’s a good technical support for the study of the radial circular run-out error of the shaft parts. Introduction At present, there are many researches on the radial circular run-out error of shaft section [1, 2, 3], Radial circle run-out error: Radial circle beating tolerance zone is in the vertical axis of any reference plane, the radius of the tolerance is “t”, and the center of the circle in the baseline axis between the two concentric circles, The tolerance band is limited to plane coordinates. It has many errors, including roundness error [4, 5], error of spindle rotation [6, 7] and tilt error of the installation axis. With the rapid development of precision and ultra-precision technology, roundness error separation is also becoming more and more important in the circular run-out error. In accordance with the structure and configuration of the sensor is divided into two point’s method, three-point method [6-8] and many methods for roundness detection. For thicker axes, the main measurement methods are micrometer [8], dial indicator, large vernier caliper and so on. The main method of enterprise is manual measurement [9, 10]. It leads to the low measurement precision and difficult to guarantee the measurement accuracy. For the current measurement of enterprise shaft parts .The authors propose a non-contact laser measurement method based on frequency domain three-point method, which includes the establishment of measurement model, data acquisition, data analysis and the design of the data display system. Through the case verification, which was proved the feasibility of the scheme.