Statics Analysis for the Crossbeam of Large Gantry CNC Machine under Six Working Conditions

Abstract:

The crossbeam is one of the main supporting parts of large gantry CNC machines. The deformation of the crossbeam under loads at work has great impact on integrated machining errors of machines. However, the crossbeam assembly’s structure and the corresponding loads are so complex that it’s difficult to get them through experiences and analytic methods. In this paper, the FE statics analysis method is used to simulate and analysis of the crossbeam under six main working conditions, obtaining deformation and stress distribution of the crossbeam under each conditions. The results show that when the slippery saddle is at the middle of the crossbeam and the ram extends to 100% length (the distance between the end of ram and the bottom of slippery saddle is 1.29 m), the total deformation of the crossbeam assembly is 6.4914 × 10^-5 m, the maximum deformation is up to 3.4872 × 10^-5 m, and the maximum stress is 1.1882 × 10⁷Pa appearing at the hole of the drive shaft. The design of the crossbeam can meet the work requirements well. And analysis results present a basis for further optimization analysis and structural improvements of the crossbeam.

• Periodical: Advanced Materials Research (Volumes 605-607)
• Pages: 1523-1526
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.605-607.1523
• Online since: December 2012
• Authors: Xiao Lei Deng, Wei Min Yang, Jian Chen Wang
• Keywords: Crossbeam, Large Gantry CNC Machines, Static Analysis, Working Condition

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