Research on the Stiffness Error Compensation of the Floor Type Boring-Milling Machining Centre

Abstract:

For the floor type boring-milling machining center, when the ram and the spindle protrude from the headstock, a cantilever-like structure is formed which will lead to great stiffness error and will affect the machining accuracy of the workpiece without compensation. It has been a difficult problem to fulfill the compensation of this stiffness error. Regarding this issue, a new method is discussed in this paper to realize this kind of compensation. By combining linear superposition principle, optimization theory with the FEA analysis, a formula is presented to calculate the oil pressure of the compensating system, which describes the relationship between the oil pressure of the compensating hydraulic cylinder and the stroke of the ram. Therefore, the oil pressure of the compensating system can be accurately calculated.

• Periodical: Advanced Materials Research (Volumes 889-890)
• Pages: 1014-1017
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.889-890.1014
• Online since: February 2014
• Authors: Jin E Wang*, Zhen Dong Zhou
• Keywords: Boring-Milling Machining Centre, Error Compensation, FEM Analysis, Optimization Theory, Superposition Principle

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