Static and Dynamic Characteristic Analysis for the HSR Series Linear Motion Guide

2013 ◽  
Vol 834-836 ◽  
pp. 1488-1492
Author(s):  
Yao Man Zhang ◽  
Ren Jun Gu ◽  
Guang Xiao Yang
Keyword(s):  
Finite Element ◽  
Machine Tool ◽  
Dynamic Characteristic ◽  
Dynamic Characteristics ◽  
Linear Motion ◽  
Characteristic Analysis ◽  
Static And Dynamic Characteristics ◽  
Nc Machine Tool ◽  
Nc Machine ◽  
Linear Motion Guide

The dynamic characteristic of junction surface is an important part of the dynamic characteristics of NC machine tools, and it is sometimes the weakest link of the machine tool's dynamic characteristics. The precision of the finite element calculation of the machine tool's dynamic characteristics shall be affected by the junction surface parameters directly. Linear Motion guide is one of the most widely used components of the NC machine tool, and its characteristic is one of the most important components of the performances of the NC machine tool. The HSR series of linear motion guides are taken as the object of the paper, and its static and dynamic characteristics are studied. And the parameters of static and dynamic characteristics of HSR, such as static stiffness, natural frequency and modal shape are obtained. The accuracy of the finite element analysis mode is verified, which establishes the foundation for the dynamics analysis of machine tool.

Dynamic Analysis and Experiment Validation of Linear Motion Guide Having Rolling Elements for NC Machine Tool

2010 ◽  
Vol 139-141 ◽  
pp. 996-1000
Author(s):  
Yao Man Zhang ◽  
Zhi Kun Xie ◽  
Qi Wei Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Static Characteristic ◽  
Linear Motion ◽  
Element Analysis ◽  
Nc Machine Tool ◽  
The Finite Element Analysis ◽  
Nc Machine ◽  
Linear Motion Guide

To design a machine tool successfully, its essential parts should be analyzed and evaluated during the process of design. The liner motion guide is one of the most essential parts of the machine tool. So it is very important to analyze the dynamic-static characteristic of the machine tool consider linear motion guide and to study the effect on machinery function. The paper’s research is based on a NC machine tool produced by a certain plant of machine tools. Methods of simulating the linear rolling guide support are studied, and the configuration of the spring damper elements of the bearing supports are also studied, and the finite element analysis on the CKS6125 machine tool has been made to confirm its dynamic characteristics. Then the finite element analysis models are validated by some experiments.

Dynamic Characteristic Analysis and Validation of Spindle Assembly of NC Machine Tool

2009 ◽  
Vol 626-627 ◽  
pp. 447-452 ◽  
Author(s):  
Yao Man Zhang ◽  
S.H. Wang ◽  
Yong Xian Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Dynamic Characteristics ◽  
Spindle Assembly ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Nc Machine Tool ◽  
The Finite Element Analysis ◽  
Nc Machine

One of the important factors resulting in the performances of the machinery is its dynamic characteristics. The spindle assembly is one of the usual parts of NC machine tool, so its dynamic-static characteristics will affect the performances of machine tool. The study is based on a NC machine tool produced by a certain plant of machine tools. The finite element dynamic analysis model of spindle assembly was developed by introducing two or three groups of circumferential spring damper elements which are arrange at different angle around the spindle, and the effect of different supporting conditions and different arrange angle on the modal analysis of the spindle assembly were discussed. The finite element analysis on spindle and spindle assembly has been made to confirm its dynamic characteristics. Then the finite element analysis models are validated by some experiments.

Dynamic Characteristic Analysis and Validation of Spindle Assembly of High Speed Machine Tool

2009 ◽  
Vol 407-408 ◽  
pp. 135-139
Author(s):  
Yao Man Zhang ◽  
Xiu Li Lin ◽  
Chun Shi Liu ◽  
Guang Qi Cai
Keyword(s):  
Machine Tool ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Spindle Assembly ◽  
Analysis Model ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Nc Machine Tool ◽  
Nc Machine ◽  
High Speed Machine

To design a machine tool successfully, its essential parts should be analyzed and evaluated after design but before prototype being made. The spindle assembly is one of the most essential parts of high speed machine tool, so how the dynamic characteristics of the spindle assembly affect the performance of high speed NC machine tool are of great significance and should be studied. This paper’s research is based on a high speed machine tool manufactured by some plant. The finite element analysis model of the spindle assembly of the high speed machine tool was developed by taking the advantage of the spring-damper element to simulate the bearing supports. The modal analysis was made to confirm the dynamic characteristics of the spindle assembly, and the results were compared with the testing ones.

Characteristic Analysis and Optimization of CNC Machine Tool Spindle Based on Finite Element Method

2012 ◽  
Vol 507 ◽  
pp. 217-221 ◽  
Author(s):  
Zhong Qi Sheng ◽  
Sheng Li Dai ◽  
Yu Chang Liu ◽  
Hua Tao Fan
Keyword(s):  
Finite Element ◽  
Machine Tool ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Static And Dynamic Characteristics ◽  
Machine Tool Spindle

Relying on HTC3250µn and HTC2550hs high-speed precision CNC turning center, this paper analyzes the static and dynamic characteristics of CNC machine tool spindle with finite element analysis software. Based on the results and using ANSYS software, this paper considers the volume and amplitude of vibration model as the objective function to optimize the size of the spindle. According to the optimized size of spindle, this paper analyzes the static and dynamic characteristics of the CNC machine tool spindle again and concludes the optimization results.

Modeling and Calculation of Dynamic Performances of NC Machine Tool Considering Linear Rolling Guideway

2009 ◽  
Vol 16-19 ◽  
pp. 510-514 ◽  
Author(s):  
Yao Man Zhang ◽  
Zhi Kun Xie ◽  
Yong Xian Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Static Characteristic ◽  
Element Analysis ◽  
Nc Machine Tool ◽  
The Finite Element Analysis ◽  
Nc Machine ◽  
Dynamic Performances ◽  
Analysis Models

The linear rolling guideway is one of the most essential parts of the machine tool. So it is very important to analyze the dynamic-static characteristic of the machine tool consider rolling guideway and to study the effect on machinery function. The paper’s research is based on a NC machine tool produced by a certain plant of machine tools. Methods of simulating the rolling guideway support are studied, and the configuration of the spring damper elements of the bearing supports are also studied, and the finite element analysis on the CKS6125 machine tool has been made to confirm its dynamic characteristics. Then the finite element analysis models are validated by some experiments.

Dynamic Characteristic Analysis and Structural Modification of a 5-Axis Horizontal Machining Center Considering Joint Surface

2011 ◽  
Vol 697-698 ◽  
pp. 513-516
Author(s):  
Y.G. Shi ◽  
Xing Yu Zhao ◽  
Li Qiang Zeng ◽  
H.Y. Wang ◽  
Da Wei Zhang
Keyword(s):  
Finite Element ◽  
Dynamic Characteristic ◽  
Dynamic Characteristics ◽  
Structural Modification ◽  
Weak Link ◽  
Joint Surface ◽  
Element Calculation ◽  
Characteristic Analysis ◽  
Machining Center ◽  
Surface Dynamic

In order to make a 5-axis linkage horizontal machining center have better dynamic characteristics, considering the influence of joint surface, dynamic characteristic analysis is conducted to the machining tool. Based on finite element modal analysis results, the weak link is found and optimized. Through the finite element calculation and analysis, the structure rigidity obviously raises after optimization. This offers a new idea on how to improve the rigidity of complete machine of machining tool for later research.

Structural investigation of steel-reinforced epoxy granite machine tool column by finite element analysis

2019 ◽  
Vol 233 (11) ◽  
pp. 2267-2279 ◽  
Author(s):  
Prabhu Raja Venugopal ◽  
M Kalayarasan ◽  
PR Thyla ◽  
PV Mohanram ◽  
Mahendrakumar Nataraj ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cast Iron ◽  
Machine Tool ◽  
Dynamic Characteristics ◽  
Element Model ◽  
Static Stiffness ◽  
Element Analysis ◽  
Static And Dynamic Characteristics ◽  
Machining Center

Higher damping with higher static stiffness is essential for improving the static and dynamic characteristics of machine tool structures. The structural vibration in conventional machine tools, which are generally made up of cast iron and cast steel, may lead to poor surface finish and the dimensional inaccuracy in the machined products. It leads to the investigation of alternative machine tool structural materials such as concrete, polymer concrete, and epoxy granite. Although epoxy granite has a better damping capacity, its structural stiffness (Young's modulus) is one-third as compared to cast iron. Therefore, the present work represents optimization of the structural design of the vertical machining center column by introducing various designs of steel reinforcement in the epoxy granite structure to improve its static and dynamic characteristics using experimental and numerical approaches. A finite element model of the existing cast iron vertical machining center column has been developed and validated against the experimental data obtained using modal analysis. Furthermore, finite element models for various epoxy granite column designs have been developed and compared with the static and dynamic characteristics of cast iron column. A total of nine design configurations for epoxy granite column with steel reinforcement are evolved and numerical investigations are carried out by finite element analysis. The proposed final configuration with standard steel sections has been modeled using finite element analysis for an equivalent static stiffness and natural frequencies of about 12–20% higher than cast iron structure. Therefore, the proposed finite element model of epoxy-granite-made vertical machining center column can be used as a viable alternative for the existing column in order to achieve higher structural damping, equivalent or higher static stiffness and, easy and environmental-friendly manufacturing process.

scholarly journals Study of the Dynamic Characteristics of Ball Screw with a Load Disturbance

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Zhe Du ◽  
Xiao-Lan Zhang ◽  
Tao Tao
Keyword(s):  
Machine Tool ◽  
Dynamic Characteristics ◽  
Numerical Control ◽  
Hertzian Contact ◽  
Ball Screw ◽  
Machining Accuracy ◽  
Contact Deformation ◽  
Nc Machine Tool ◽  
Load Disturbance ◽  
Nc Machine

The dynamic character of ball screw is the key factor that influences the machining accuracy of numerical control (NC) machine tool. To improve the dynamic characteristics of the NC machine tool, it is necessary to study the dynamic characteristics of a ball screw. In this paper, the kinematics of a ball screw mechanism (BSM) are studied to expound the dynamic process of the drive, and the load disturbance is considered to analyze the contact deformation based on the Hertzian contact theory. The velocity relationships among the ball, screw, and nut are analyzed, and the influence of the contact deformation on the dynamic characteristics is simulated and investigated experimentally. The results show that the relationships between the contact deformation, which is affected by the material characteristics, the contact angle, and the load of nut are nonlinear. The contact deformation is a factor that cannot be ignored when considering the dynamic machining error of high-speed and high-precision machine tools.

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