Researching a Online Method of Measuring Three-Dimensional Deformation for Large Overhead Crossbeam

Abstract:

Aiming at the difficulty of online measurement for three-dimensional deformation of large overhead crossbeam in gantry CNC machining centre, this paper proposes a measuring method based on multi-points attitude of crossbeam-body. Real-time measuring the attitudes of some equidistant points on crossbeam-body, dealing with the measurement information by adopt shockproof filtering, wavelet denoising and smoothing. Then infer the formulas to calculate deformation of each point along different directions of x-axis, y-axis, z-axis. The experiment uses triaxial acceleration sensor modules to measure crossbeam attitude. Experimental results show that the minimum deformational angle can be measured low to 0.06°. And if the spacing between sensor modules has mm level accuracy, the precision of calculation about deformation can reach up to 10^-3mm level. In addition, this method is strongly suitable for on-site environment, and it can lay a foundation for further researching about prediction and compensation in the CNC processing.

• Periodical: Key Engineering Materials (Volume 522)
• Pages: 272-277
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.522.272
• Online since: August 2012
• Authors: Wei Han, Li Ming Wu, Yao Hua Deng, He Yun Zhang
• Keywords: Crossbeam, Multi-Points Attitude, Online Measurement, Three-Dimensional Deformation

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