A Calculation Method of Static Turntable Deformation Considering the Effect of Fluid-Structure Interaction

Abstract

The invention aims to provide a static pressure rotary table deformation calculating method, and particularly relates to a static pressure rotary table deformation calculating method considering fluid-structure interaction influence. The static pressure rotary table deformation calculating method is mainly characterized in that first bearing capacity of a supporting oil pad is calculated, and stress analysis is carried out on a static pressure rotary table to set up a static pressure rotary table equilibrium equation; based on the round sheet basic theory, the static pressure rotary table is equivalent to an external rim infinite model, and deformation of the static pressure rotary table under the action of external force and initial static pressure oil film supporting force is calculated. The fluid-structure interaction influence is considered, and the actual deformation of the static pressure rotary table is calculated based on finite iteration programming. The interaction of the static pressure rotary table and fluid static pressure supporting oil pad is considered, namely fluid-structure interaction influence is considered, and deformation of the fluid static pressure rotary table under the action of heavy loads is solved.

Description

technical field [0001] The invention belongs to the field of static pressure turntable design and analysis, and relates to a calculation method for the deformation of a static pressure turntable of a heavy machine tool considering the influence of fluid-solid coupling, in particular to a calculation method for the deformation of a static pressure turntable considering fluid-solid coupling based on circular thin plate theory method. Background technique [0002] Hydrostatic Rotary Table (Hydrostatic Rotary Table) is a key accessory of heavy-duty high-end CNC machine tools. When a heavy-duty hydrostatic rotary table is loaded with heavy workpieces, due to the restriction of the rigidity of the turntable itself, the turntable itself will undergo elastic deformation. Since the hydrostatic turntable is supported by the oil film formed between multiple oil pads and the turntable guide rails, there is a phenomenon of stress concentration, resulting in increased deformation of the t...

AI Technical Summary

Problems solved by technology

Since the hydrostatic turntable is supported by the oil film formed between multiple oil pads and the turntable guide rails, there is a phenomenon of stress concentration, resulting in increased deformation of the turntable guide rails at the oil pads, which will directly affect the flow state of the hydrostatic oil film and its carrying capacity

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