Dynamic Characteristic Calculation of CNC Machine Tool’s Base Based on FEM

2013 ◽  
Vol 546 ◽  
pp. 20-24
Author(s):  
Xiao Lei Deng ◽  
Jian Chen Wang ◽  
Zhao Zhong Zhou
Keyword(s):  
Machine Tool ◽  
Optimization Design ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Nc Machine Tool ◽  
Structural Improvement ◽  
Nc Machine ◽  
Complete Calculation ◽  
Main Component ◽  
Safety Operation

Base is a main component of CNC machine tool, so its dynamic characteristics impact on machine tool’s machining precision and stability directly. However, the traditional analytic way cannot finish the accurate and complete calculation and analysis. So it is very necessary to make FEM dynamics research on base of machine tool. This paper employs FEM modal analysis to research the free vibration of base which is undamped. And then we can get the nature frequencies of the base’s first six modal, there are 407.79 Hz, 430.47 Hz, 501.23 Hz, 623.63 Hz, 626.51 Hz and 661.19 Hz, respectively. In addition, the first six modal shapes are also obtained. The forth frequency and the fifth frequency are much closed, so they can be considered the multiple roots for the vibration equation. The research results can provide theoretical basis for fault diagnosis，safety operation and vibration control，and the important parameters are useful for structural improvement and optimization design of the NC machine tool．

Goal-Driven Optimization Design of Lathe Bed Based on the Response Surface Method

2013 ◽  
Vol 433-435 ◽  
pp. 2208-2212
Author(s):  
Ming Cong ◽  
Hong Chuan Wang ◽  
Shan Shan Li ◽  
De Sheng Wang
Keyword(s):  
Machine Tool ◽  
Response Surface ◽  
Response Surface Method ◽  
Optimization Design ◽  
Lightweight Design ◽  
Engineering Application ◽  
Cnc Machine ◽  
Nc Machine Tool ◽  
Surface Method ◽  
Nc Machine

In this article, the Lathe Bed of DL20-MST CNC machine tool is taken as the research object. The response surface method and optimization design of goal-driven are introduced. Combining the two methods, the size optimization design method of the Lathe Bed of NC machine tool is put forward based on the ANSYS. The design dimensions which play an important role in the static and dynamic performance of Bed are found through sensitivity analysis. And then, the goal-driven optimization design of the Lathe Bed is carried out based on the response surface method, searching for the optimal dimensions of Lathe Bed, realizing the lightweight design of the Lathe Bed of NC machine tool. In addition, the improvement on the performance of Lathe Bed after optimization is analyzed. The ideas and methods used in this paper offer a good reference for the design and production of the key parts of other similar machine tools, and have a great engineering application value.

The Spindle Structural Optimization Design of HTC3250µn NC Machine Tool Based on ANSYS

2012 ◽  
Vol 457-458 ◽  
pp. 60-64 ◽  
Author(s):  
Hua Long Xie ◽  
Hui Min Guo ◽  
Qing Bao Wang ◽  
Yong Xian Liu
Keyword(s):  
Machine Tool ◽  
Optimization Design ◽  
Optimization Method ◽  
Optimized Design ◽  
Nc Machine Tool ◽  
Mathematical Mode ◽  
Design Variables ◽  
Before And After ◽  
Nc Machine ◽  
Important Significance

The optimization of spindle has important significance. The optimization method based on ANSYS is introduced and spindle mathematical mode of HTC3250µn NC machine tool is given. By scanning of design variables, the main optimized design variables are determined. The single objective and multi-objective optimizations are done. In the end, the main size comparison of spindle before and after optimization is given.

Research on Hydrostatic Supporting Temperature-Rise of Heavy NC Machine Tool

2013 ◽  
Vol 274 ◽  
pp. 132-135 ◽  
Author(s):  
Yan Qin Zhang ◽  
Rui Li ◽  
Chun Xi Dai ◽  
Jun Peng Shao ◽  
Xiao Dong Yang ◽  
...  
Keyword(s):  
Temperature Field ◽  
Machine Tool ◽  
Optimization Design ◽  
Thrust Bearing ◽  
Effective Control ◽  
Fluid Temperature ◽  
Oil Film ◽  
Hydrostatic Bearing ◽  
Nc Machine Tool ◽  
Nc Machine

With heavy NC machine tool is widely used in many oil pad round guide hydrostatic bearing as the research object, in the under condition of variable viscosity, establish oil film viscosity-temperature equation. Adopt finite volume method, simulation the hydrostatic bearing internal fluid temperature field under different flow rates on the speed of 6R / min. Numerical simulation hydrostatic thrust bearing oil film temperature field, can find a general high temperature region, and then take effective control temperature. It can achieve the hydrostatic thrust bearing oil film temperature field prediction for engineering practical oil chamber structure, offer the theoretical foundation for optimization design.

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.

The Spindle Structural Optimization Design of HTC3250µn NC Machine Tool Based on ANSYS

2012 ◽  
Vol 457-458 ◽  
pp. 60-64 ◽  
Author(s):  
Hua Long Xie ◽  
Hui Min Guo ◽  
Qing Bao Wang ◽  
Yong Xian Liu
Keyword(s):  
Structural Optimization ◽  
Machine Tool ◽  
Optimization Design ◽  
Nc Machine Tool ◽  
Nc Machine

Analysis on Cogging Torque of Permanent Magnet Synchronous Motor for NC Machine Tool Servo-System

2010 ◽  
Vol 44-47 ◽  
pp. 1878-1882
Author(s):  
Shen Bo Yu ◽  
Hui Dong ◽  
Xin Feng ◽  
Jing Yuan
Keyword(s):  
Machine Tool ◽  
Permanent Magnet ◽  
Optimization Design ◽  
Permanent Magnet Synchronous Motor ◽  
Fem Simulation ◽  
Servo System ◽  
Synchronous Motor ◽  
Cogging Torque ◽  
Nc Machine Tool ◽  
Nc Machine

This paper presents a procedure of calculating cogging torque of Permanent Magnet Synchronous Motor (PMSM) for NC machine tool servo-system based on finite element method (FEM). Simulation models of PMSM are established to complete coupled calculation between magnetic fields and mechanical dynamics. Furthermore, the distributions of magnetic flux and electromagnetic force densities are also gained. Finally, the cogging torque of the motor in operating process is suppressed by changing slot opening configuration. The references for the optimization design on NC machine tool servo-system are provided by the simulation model.

Study on Dynamic Characters of Interaction Effect of Precision Machine Tool-Box Foundation-Soil

2014 ◽  
Vol 496-500 ◽  
pp. 1088-1091 ◽  
Author(s):  
Dan Yi ◽  
Yue Ning ◽  
Yang Tian ◽  
Zhi Feng Liu
Keyword(s):  
Machine Tool ◽  
Optimization Design ◽  
Theoretical Foundation ◽  
Lagrange Equation ◽  
Design System ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Foundation Soil ◽  
Soil System ◽  
Dynamic Precision

The application of Lagrange equation to establish the dynamic precision CNC machine tool-box foundation - soil system model. By applying the boundary conditions. Analyzed the dynamic of three different soil system under the action of impact response, Laid the theoretical foundation for the optimization design system.

NC Machine Tool Control System Design

2013 ◽  
Vol 753-755 ◽  
pp. 1526-1529
Author(s):  
Hong Jun Liu
Keyword(s):  
Control System ◽  
Machine Tool ◽  
Design Method ◽  
High Reliability ◽  
Cnc Machine Tools ◽  
Work Piece ◽  
Cnc Machine ◽  
Nc Machine Tool ◽  
Core Technology ◽  
Nc Machine

To adapt to the CNC machine high precision, high quality, high reliability requirements,This article designed NC machine tool control system with application of Lon-works technology. The hardware design method of input module and sensor interface, output module and the stepper motor interface in the system are introduced. This kind of control system rely on its core technology neural chip that based on Lon-works technology can realize the work-piece precision machining. It can be applied to different types of CNC machine tools and will make up for the deficiency of the traditional NC machine tool by PLC control.

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