Box-in-box type machine tool beam optimization design method using recombination of multiple ribbed plate structures

Abstract

The invention discloses a box-in-box type machine tool beam optimization design method using recombination of multiple ribbed plate structures. The method mainly comprises the following steps: constructing a machine tool beam three-dimensional structure parameterized model, performing static characteristics simulation analysis; according to beam simulation result data, determining the weakest partof the beam structure design; changing internal ribbed plate structures of the beam, reinforcing the local weak part of the beam in the form of recombination of various ribbed plate structures; determining a beam improvement structure, and performing optimization design for critical size of the beam improvement structure; comparing various performances before and after optimization, and verifyingreasonability of the final scheme. The optimization design method provided by the invention is reasonable, reliable and easy to realize, can improve the static and dynamic performances of the beam while reducing mass of the beam, and has relatively strong engineering practicability.

Description

technical field [0001] The invention belongs to the technical field of machine tool design, and relates to a method for structural design of key components of a machine tool, in particular to a method for optimizing the crossbeam design of a box-in-box type machine tool using multi-rib plate structure composites. Background technique [0002] As an important part of the CNC machine tool, the beam of the machine tool bears the weight of key components such as slides, rams, and spindles. The deformation of the beam caused by its own gravity and external loads will directly affect the performance of the machine tool, and then affect the The geometric accuracy and surface processing quality of the workpiece. Therefore, it is required that the beam not only has light weight, high stiffness, and small deformation, but also has good dynamic characteristics. [0003] Traditional beam design mostly adopts empirical design or analogy design, lacks corresponding theoretical basis, and...

AI Technical Summary

Problems solved by technology

In this patent, the layout of the internal rib structure of the beam is a qualitative design, lacking the corresponding deformation data of the beam as a support, it is difficult to judge the real weak point of the beam during the processing; and the parameter setting of the thickness of the rib plate cannot be determined. It will cause "redundancy" of the rib material and increase the overall mass of the beam

Therefore, the patent CN201720730535.3 has a certain blindness in the design of the beam structure, and the optimization design effect cannot be guaranteed

Images