A novel method of dynamic characteristics analysis of machine tool based on unit structure

Zhu, Pengyu; Chen, Lihai

doi:10.1007/s11431-014-5524-2

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…There are many investigators have carried out error modeling research for complicated machinery system using MBS [41,23,44,39], mainly focus on designing and constructing a model to determine geometric error of machine tool and developing the key technique for compensation-identifying geometric error parameters. [43,17,4,7,22,2,11] introduce the methods of geometric error compensation, thermal error modeling, position error compensation, position-independent geometric errors modeling, volumetric error modeling and sensitivity analysis and establishing a product of exponential(POE) model for geometric error integration.…”

Section: Accuracy Predictionmentioning

confidence: 99%

A geometric accuracy design method of multi-axis NC machine tool for improving machining accuracy reliability

Cai¹,

Zhang²,

Cheng³

et al. 2015

Eksploatacja i Niezawodnosc - Maintenance and Reliability

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Section: Accuracy Predictionmentioning

confidence: 99%

A geometric accuracy design method of multi-axis NC machine tool for improving machining accuracy reliability

Cai¹,

Zhang²,

Cheng³

et al. 2015

Eksploatacja i Niezawodnosc - Maintenance and Reliability

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show abstract

“…Therein, the concept of unit structure and the design method based on unit structure are also put forward innovatively. A two-level optimization method of whole structure based on unit structural analysis was proposed by Liu C Y(2015), which was verified by an example [ 25 , 42 ]. analyzed and optimized the dynamic performance of machine tool based on unit structure design method.…”

Section: Introductionmentioning

confidence: 99%

“…At present, many scholars pay more attention to the predictions or the fast calculations of the performances of the large-scale complex mechanical structures based on substructure method, but pay less attention to mechanical structure design based on substructure. And also the mechanical structure topology design based on substructure mainly adopts the traditional design method [ 42 ]; Lim J et al, 2020; [ 8 , 10 , 19 ], which often comes from experience and is limited by inherent design thinking or the stereotyped thinking. In this paper, a substructure design based on biological unit cell (UC) is proposed, which draws inspiration from the efficient bearing topology of natural organisms.…”

Section: Introductionmentioning

confidence: 99%

Structure bionic topology design method based on biological unit cell

Yang¹,

Xue-tao²,

Zhu³

et al. 2023

Heliyon

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“…LUO et al [4] proposed a rigid-flexible coupling model of a five-axis CNC system and then studied the influence of the beam structure on the dynamic characteristics of the machine. Moreover, ZHU [5] proposed a new method to analyze the dynamic characteristics of machine tools based on the unit structure and significantly improved the model through this method.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear analysis of axial vibration of five-axis machine tool worktable with double turntable

Liu

et al. 2022

Int J Adv Manuf Technol

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Studies show that the applied torque and load on the worktable of a dual-turntable five-axis machine tool continuously changes during the machining process. These variations generate vibration in the worktable along the axial direction, thereby reducing the machining accuracy. In order to improve the machining accuracy of the machine tool and the dynamic characteristics of the worktable, this paper first established the nonlinear dynamic equation of the axial vibration of the machine tool table when the worktable is subjected to torque, swing moment and load according to the elasticity of the plate and shell; then according to Galerkin The truncation method solves the dynamic displacement in the axial direction of the worktable, as well as the bifurcation diagram, displacement waveform diagram, phase plane trajectory and Poincaré cross-section diagram of the processing system; Finally, the influence of different parameters, including torque, swing moment, and load on axial vibration of the worktable was analyzed during the tool operation. The obtained results reveal that as the external load changes, the corresponding axial vibration of the worktable is mainly in the state of large periodic motion, where the maximum vibration amplitude reaches 0.09mm, and the external load has the greatest influence on the axial vibration of the worktable. Moreover, the axial vibration of the worktable is affected by the swing moment. More specifically, in the chaotic state of a small period and small area, the maximum vibration amplitude reaches 0.03mm, and the swing moment has a negligible effect on the axial vibration of the worktable. The influence of torque and load on the vibration characteristics of the five-axis machine tool table during machining was studied through experiments. The obtained results demonstrate that non-linear analysis of the table axial vibration of the five-axis machine tool with dual turntables is an effective way to control the stability of the worktable during the processing of the workpiece. Keywords Five-axis machine tool worktable Axial direction Nonlinear vibration Dynamic characteristics;

show abstract

A novel method of dynamic characteristics analysis of machine tool based on unit structure

Cited by 8 publications

References 11 publications

A geometric accuracy design method of multi-axis NC machine tool for improving machining accuracy reliability

A geometric accuracy design method of multi-axis NC machine tool for improving machining accuracy reliability

Structure bionic topology design method based on biological unit cell

Nonlinear analysis of axial vibration of five-axis machine tool worktable with double turntable

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