Dynamic Analysis and Optimization of Machine Tool in Consideration of Joint Parameters

2011 ◽  
Vol 697-698 ◽  
pp. 320-325
Author(s):  
C. Xu ◽  
Z.J. Wu ◽  
J.F. Zhang ◽  
P.F. Feng ◽  
D.W. Yu
Keyword(s):  
Machine Tool ◽  
Dynamic Analysis ◽  
Modal Analysis ◽  
Dynamic Characteristic ◽  
Dynamic Model ◽  
Optimization Design ◽  
Model Simulation ◽  
Harmonic Response ◽  
Machining Center ◽  
Joint Parameters

This paper provides the methodology on analyzing the dynamic characteristic of machine tool in consideration of joint parameters. To ensure the dynamic model is available for further study, modal experiment for vertical machining center is involved. The machine tool is divided into several parts and connected with spring and damping for substructure modeling. Particularly, the bolt-fixed joint is an example for the joints modeling. Based on the dynamic model, simulation of modal analysis and harmonic response are carried out. Besides, method of optimization design of column and milling box is given to improve the performance, which is proved to be feasible in harmonic response.

Optimization Design of DVG850 Worktable System Based on ANSYS Workbench

2012 ◽  
Vol 184-185 ◽  
pp. 356-359
Author(s):  
Jiang Miao Yi ◽  
Dong Qiang Gao ◽  
Fei Zhang ◽  
Huan Lin
Keyword(s):  
Modal Analysis ◽  
Natural Frequency ◽  
High Speed ◽  
Optimization Design ◽  
Element Model ◽  
Single Screw ◽  
Machining Center ◽  
The Finite Element Model ◽  
Better Than ◽  
Ansys Workbench

The finite element model of worktable system is created and modal analysis is made with ANSYS Workbench by taking DVG850 high-speed vertical machining center worktable system for example. We make modal analysis of single-screw strength general reinforcement worktable system and get the natural frequency and the vibration mode.Then in order to improve the system's natural frequency, the scheme of dual-screw worktable system is put forward. Also natural frequency and vibration mode is got. Finally, it is proved that the performance of dual-screw worktable system is significantly better than the single-screw one. This provides a reliable reference for further study on dynamic analysis of worktable system.

Influence of Bolted Joint on Dynamic Characteristics of Combined Three-Section Crossbeam

2010 ◽  
Vol 37-38 ◽  
pp. 534-539
Author(s):  
Tie Neng Guo ◽  
Dong Liang Guo ◽  
Li Gang Cai ◽  
Bin Song ◽  
Jing Nan Zhao
Keyword(s):  
Machine Tool ◽  
Dynamic Analysis ◽  
Dynamic Characteristic ◽  
Dynamic Characteristics ◽  
Bolted Joints ◽  
Experimental Result ◽  
Bolted Joint ◽  
Cnc Milling ◽  
Characteristic Parameters

The combined three-section crossbeam is an important component in the heavy gantry CNC milling-lathing machine tool and the dynamic characteristics are key precision factors for the machine tool. Three sections of the combined crossbeam are bolted by large industrial bolts and the influence of bolted joints should be evaluated in the dynamic analysis of the combined crossbeam. The dynamic characteristics of the combined three-section crossbeam were extracted by the modal experiment. The FEM of the monolithic crossbeam was modeled to analyze the dynamic characteristic parameters. The comparison of the analysis result and experimental result were shown. The experimental result matched well with the FEM of the monolithic crossbeam without bolted joints. As a result, the influence of the bolted joints could be ignorable in dynamic characteristic for the combined three-section crossbeam.

Dynamic Characteristics of Guideway Joints for CNC Machine Tool

2011 ◽  
Vol 80-81 ◽  
pp. 1051-1054
Author(s):  
Chun Xia Zhu ◽  
Bin Li ◽  
Ji Man Luo
Keyword(s):  
Machine Tool ◽  
Dynamic Characteristics ◽  
Optimization Design ◽  
Joint Stiffness ◽  
Element Model ◽  
Cnc Machine Tool ◽  
Regular Pattern ◽  
Cnc Machine ◽  
Harmonic Response ◽  
The Finite Element Model

In order to analyze accurately the dynamic characteristics of guideway joints of CNC, the finite element model(FEM) of guideway joints of CNC is built in ANASYS software, which that springs and damping units imitate guideway joints in this paper. The proposed method can predict the regular pattern which joint stiffness and joint span affect natural frequency and harmonic response. The research demonstrates that the method predicts well the dynamic characteristics of the guideway joints of CNC; therefore, it can be a reference for dynamic optimization design of guideway joints of CNC machine tool.

Dynamic Analysis in Grinding Head of Roller Grinding Machine

2013 ◽  
Vol 694-697 ◽  
pp. 259-262
Author(s):  
Jin Ling Cao ◽  
Ying Luo
Keyword(s):  
Dynamic Analysis ◽  
Modal Analysis ◽  
Natural Frequency ◽  
Transfer Matrix ◽  
System Dynamic ◽  
Dynamic Design ◽  
Spindle System ◽  
Harmonic Response ◽  
Vibration Resistance ◽  
Grinding Machine

In the article, the vibration resistance of spindle system in grinding head of roller grinding machine is studied by means of harmonic response and modal analysis, by using the method of the transfer matrix, obtained the first five orders of the natural frequency of spindle system. By studying the M84100A type spindle system in grinding head of roller grinding machine, obtained the conclusion that the natural frequency was far from the work frequency, so laid a foundation of the spindle system dynamic design.

Dynamic Modeling and Optimal Design of a Horizontal Machining Center Based on Experimental Modal Analysis

2017 ◽  
Vol 868 ◽  
pp. 271-276
Author(s):  
Yu Bin Huang ◽  
Yue Ma ◽  
Qing Chao Sun ◽  
Wei Sun ◽  
Wen Bin Yue ◽  
...  
Keyword(s):  
Optimal Design ◽  
Machine Tool ◽  
Modal Analysis ◽  
Mode Shape ◽  
Dynamic Performance ◽  
Frame Structure ◽  
Grand Challenge ◽  
Analysis Method ◽  
Machining Center ◽  
Simulation Results

The modeling and optimization of machine tool’s dynamic performance remains to be a grand challenge in machine tool design. In this paper. In order to identifying the concentrated modals of a horizontal machining center, a combined experiment modal analysis method is proposed. A FEA dynamic model accurate in frequency and mode shape is built and verified by comparing with EMA results. Based on the model the optimization of frame structure is made, Simulation results shows the optimized frame enhances the dynamic performance of machine tool.

Dynamic Analysis and Structure Improvements on Machine Tool Bed

2012 ◽  
Vol 605-607 ◽  
pp. 1541-1544
Author(s):  
Lei Sun ◽  
Ming Hai Wang ◽  
Bao Feng Shan ◽  
Jin Lan Bai ◽  
Hai Zhou
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Machine Tool ◽  
Dynamic Analysis ◽  
Modal Analysis ◽  
Natural Frequencies ◽  
Vibration Modal ◽  
Element Method

The modal analysis of machine tool bed was done by means of finite element method. Find out its characteristics of vibration modal. Then structure improvements on arrangement of tool bed reinforcing plates were done. After the structure improvements the natural frequencies of the tool bed were improved.

Optimization of DVG850 Dual-Screw Worktable System Based on ANSYS Workbench

2012 ◽  
Vol 601 ◽  
pp. 181-185
Author(s):  
Jiang Miao Yi ◽  
Dong Qiang Gao ◽  
Fei Zhang ◽  
Huan Lin
Keyword(s):  
Dynamic Analysis ◽  
Modal Analysis ◽  
Driving Force ◽  
High Speed ◽  
Horizontal Distance ◽  
Single Screw ◽  
Machining Center ◽  
Ansys Workbench

In traditional single-screw worktable system, the system is always subjected with torque because the driving force and force-bearing point of the workpiece always change with the processing path, so its performance may be affected. Therefore, the scheme of dual-screw worktable system is put forward and modal analysis with ANSYS Workbench is made by taking DVG850 high-speed vertical machining center worktable system for example. Then four alternatives of the machine are proposed based on the position of screw and guide.Through modal analysis of different parameters of the system, we ultimately select the dual-screw worktable system with highest performance (Screws place inside of the guide and horizontal distance of the two screws is 310mm.) as the optimalizing plan. This provides a reliable reference for further study on dynamic analysis of worktable system.

Dynamic Analysis of Electric Spindle Based on ANSYS

2013 ◽  
Vol 288 ◽  
pp. 75-79
Author(s):  
Ling Ling Zhang ◽  
Xiao Yu Qin
Keyword(s):  
Dynamic Response ◽  
Dynamic Analysis ◽  
Rotational Speed ◽  
Optimization Design ◽  
Natural Frequencies ◽  
Resonance Phenomenon ◽  
Finite Model ◽  
Static Stiffness ◽  
Harmonic Response ◽  
Critical Rotational Speed

Building a finite model of the electric spindle by ANSYS. Using Lanczos to extract first 4 natural frequencies and vibration models of the spindle, and using Harmonic response analytic methods to obtain dynamic response in different excitation of electric spindle .The results show that the static stiffness of electric spindle can meet the requirements, because the highest work speed of Spindle is far away from the critical rotational speed, it can avoid the resonance phenomenon effectively. It lays the foundation of Optimization design and Remanufacturing of the spindle.

Dynamic Analysis and Simulation of Deployable Planar Truss Mechanism

2009 ◽  
Vol 69-70 ◽  
pp. 649-654
Author(s):  
Yi Sun ◽  
G.K. Shi ◽  
J.H. Shan ◽  
Ming Feng Dong
Keyword(s):  
Dynamic Analysis ◽  
Mechanism Design ◽  
Dynamic Model ◽  
Dynamic Equation ◽  
Optimization Design ◽  
Dynamic Theory ◽  
Lagrange Equation ◽  
Body System ◽  
Force Condition ◽  
Multi Body

This document researches on the improved deployable planar truss mechanism design and builds an dynamic equation of the model based on Lagrange equation in the multi-body system dynamic theory. The dynamic model is established to simulate the motion of the system and calculate the force condition of members respectively by ADAMS. Finally, the significant references for the elasto-dynamic analysis and optimization design of the truss mechanism will be provided.

Optimization Design of a Vibrating System with Two Motors

2009 ◽  
Vol 628-629 ◽  
pp. 67-72
Author(s):  
D.G. Wang ◽  
K. Guo ◽  
Chun Yu Zhao ◽  
Bang Chun Wen
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Model ◽  
Computer Simulations ◽  
Optimization Design ◽  
Phase Synchronization ◽  
Simulation Program ◽  
Synchronous State ◽  
Vibrating System ◽  
Frequency Capture ◽  
Synchronous Operation

The dynamic model of vibrating system with two motors is established. Through dynamic analysis, the equations of frequency capture of the vibrating system and the conditions of implementing stable self-synchronous operation are obtained. Then the vibrating system is optimization designed based on the conditions of implementing stable self-synchronous operation. The simulation program with proper parameters of vibrating system is run, and the results show that the system is in a good synchronous state. Computer simulations demonstrate that the vibrating system realizes speed synchronization and phase synchronization. The results verify the effectiveness of the optimization design.

Sign in / Sign up

Export Citation Format

Share Document