Online measurement reconstruction method for large-scale cylinder profile based on parallel error separation method

Abstract

The invention discloses an online measurement reconstruction method for a large-scale cylinder profile based on a parallel error separation method, and the reconstruction method comprises the steps: extracting the relative change amount of the geometric meter of two adjacent measurement section circles through the parallel error separation of three axial sections; obtaining the geometric center of each measurement section circle through stacking, thereby achieving the reconstruction of a cylinder profile through taking the connection line of the geometric centers of all measurement section circles of a measured shaft as the reference axis. The method can achieve the high-precision measurement and evaluation of the circular degree, cylindricity, bus linearity and taper of the cylinder profile based on the above. The method can the full-harmonic separation of radial rotation error movement and guide rail linear error movement of a shaft system in a measurement process, guarantees the high-precision measurement reconstruction of the cylinder profile, and reduces the manufacture cost of online measurement equipment of the large-scale cylinder profile.

Description

technical field [0001] The invention relates to the field of precision testing technology and the design and manufacture of large-scale online measurement equipment, in particular to a large-scale cylindrical profile online measurement and reconstruction method based on a parallel error separation method. Background technique [0002] The large shaft is an important large-scale component in the large-scale high-end equipment manufacturing industry. For example, in the production equipment of large-scale solar panels, LCD screens, automotive steel plates, high-quality paper and industrial composite plates, large-scale precision shaft rollers are equipped The profile accuracy of core components, including roundness, cylindricity, busbar straightness, and taper, is an important factor that determines product quality (plate accuracy), and marks the technical level and international competitiveness of a country's high-end equipment manufacturing industry. [0003] Due to the huge...

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Problems solved by technology

However, due to the inherent defect of EST: the first-order harmonic suppression, it is difficult to correctly separate the first-order harmonic component of the radial error motion of the shaft system in the measurement system when it is applied to the online measurement of the cylindrical profile, resulting in the inability to correctly extract each measurement section In the end, it is difficult to correctly realize the reference axis (usually not a straight line) constructed by connecting the geometric centers of the measured cross-sectional circles (the first-order harmonic component of the cross-sectional shape) to reconstruct the cylindrical profile [Hong Maisheng, Li Zijun, Li Jishun et al. Purification of Cylindrical Surface Profile Reconstruction Benchmark[J]. Journal of Shanghai Jiaotong University, 2002,36(8):1068~1070]

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