Structural optimization of drilling bed for deep hole drilling machine

摘要

Taking the drilling bed of Z8016 deep hole drilling machine as the research object, a modal analysis of drilling bed structure is performed by ANSYS software. Assuming that the low-order natural frequencies basically remain unchanged, the structure of the drilling bed is analyzed and modified so as to decrease its weight. The bed structure is selected based on ANSYS, that is to say, the structural parameters of the drilling bed are optimized in the condition of fundamental frequency constraints, which takes wall thickness, ribbed plate thickness and the diameter of ribbed plate holes of the drilling bed as design variables. Compared with the original one, the optimal drilling bed has better dynamic stiffness, reduces material consumption, lowers the cost of the drilling bed and achieves the optimal goal.