Research on the digital twin for thermal characteristics of motorized spindle

2022 ◽  
Author(s):  
Jianying Xiao ◽  
Kaiguo Fan
Keyword(s):  
Thermal Characteristics ◽  
Motorized Spindle ◽  
Digital Twin

scholarly journals Research on the Digital Twin for Thermal Characteristics of Motorized Spindle

2021 ◽  
Author(s):  
Jianying Xiao ◽  
Fan Kai-Guo
Keyword(s):  
Thermal Behavior ◽  
Data Acquisition ◽  
Heat Generation ◽  
Prediction Accuracy ◽  
Thermal Characteristics ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Motorized Spindle ◽  
Digital Twin ◽  
Twin System

Abstract With the increase of spindle speed, heat generation becomes the crucial problem of high-speed motorized spindle. In order to obtain the actual thermal behavior of a motorized spindle, a digital twin system for thermal characteristics is developed in this paper. The mechanism of digital twin for thermal characteristics is to simulate the thermal behavior of a machine tool through mapping and correcting the thermal boundary conditions using the data acquisition system and correction models. The proposed digital twin system includes three modules which are the digital twin software, the data acquisition system, and the physical model with embedding sensors. The digital twin software is developed based on the Qt with the C++ programming language and the secondary development of ANSYS. Correction models for thermal boundaries are proposed to correct the heat generation and thermal contact resistance using the temperatures measured by the data acquisition system at thermal key points. To verify the prediction accuracy of the digital twin system, an experiment is carried out on a motorized spindle. The experimental results show that the prediction accuracy of the digital twin system is greater than 95%. It is of great significance to improve the accuracy of thermal characteristics simulation and thermal optimization.

scholarly journals Design and thermal characteristic analysis of motorized spindle cooling system

2021 ◽  
Vol 13 (5) ◽  
pp. 168781402110208
Author(s):  
Yuan Zhang ◽  
Lifeng Wang ◽  
Yaodong Zhang ◽  
Yongde Zhang
Keyword(s):  
Flow Rate ◽  
High Speed ◽  
Thermal Deformation ◽  
Cooling System ◽  
Thermal Characteristic ◽  
Water Flow Rate ◽  
Thermal Characteristics ◽  
Characteristic Analysis ◽  
Motorized Spindle ◽  
Experiment And Simulation

The thermal deformation of high-speed motorized spindle will affect its reliability, so fully considering its thermal characteristics is the premise of optimal design. In order to study the thermal characteristics of high-speed motorized spindles, a coupled model of thermal-flow-structure was established. Through experiment and simulation, the thermal characteristics of spiral cooling motorized spindle are studied, and the U-shaped cooled motorized spindle is designed and optimized. The simulation results show that when the diameter of the cooling channel is 7 mm, the temperature of the spiral cooling system is lower than that of the U-shaped cooling system, but the radial thermal deformation is greater than that of the U-shaped cooling system. As the increase of the channel diameter of U-shaped cooling system, the temperature and radial thermal deformation decrease. When the diameter is 10 mm, the temperature and radial thermal deformation are lower than the spiral cooling system. And as the flow rate increases, the temperature and radial thermal deformation gradually decrease, which provides a basis for a reasonable choice of water flow rate. The maximum error between experiment and simulation is 2°C, and the error is small, which verifies the accuracy and lays the foundation for future research.

Measurement and Analysis on Transient Thermal Characteristics of High Speed Motorized Spindle

2011 ◽  
Vol 52-54 ◽  
pp. 2021-2026
Author(s):  
Gui Ling Deng ◽  
Can Zhou
Keyword(s):  
High Speed ◽  
Thermal Deformation ◽  
Thermal Characteristics ◽  
Measuring System ◽  
Test Results ◽  
Motorized Spindle ◽  
Measurement And Analysis ◽  
Turning Center ◽  
Transient Thermal ◽  
Deformation Compensation

Thermal deformation is an important factor to affect the accuracy of the motorized spindle, the core component of high-speed machine tool. To understand the spindle system transient thermal characteristics of the high-speed turning center CH7516GS, some high-precision sensors and high-frequency data acquisition system is used to establish the temperature and displacement measuring system. The thermal deformation compensation model is established on the basis of the experimental test results.

Thermal Error Measurement, Modeling and Compensation for Motorized Spindle and the Research on Compensation Effect Validation

2014 ◽  
Vol 889-890 ◽  
pp. 1003-1008 ◽  
Author(s):  
Yu Qing Fu ◽  
Wei Guo Gao ◽  
Jin Yu Yang ◽  
Qing Zhang ◽  
Da Wei Zhang
Keyword(s):  
Compensation Effect ◽  
Great Influence ◽  
Thermal Characteristics ◽  
Thermal Error ◽  
Shift Function ◽  
Linear Regression Method ◽  
Motorized Spindle ◽  
Verification Method ◽  
Machining Center ◽  
Thermal Error Model

The motorized spindle is a primate part of the machine tool and its thermal characteristics have great influence on the accuracy of the machine tools. The thermal errors of the spindle of a certain type of precision horizontal machining center were measured with PLC acquisition system. By multivariate linear regression method, the axial thermal error model was built. Online real-time error compensation was implemented by applying the FANUC 18i CNC system external machine coordinate system shift function. A verification method was proposed which include three steps: model validation, compensation validation and experimental machining verification. The accuracy of the model was 84.1%, 64.9% and 49.4% respectively. The quantitative analysis results showed the precision was effectively improved and the compensation method was reliable.

A FE Modelling Method for the Thermal Characteristics of High-Speed Motorized Spindle

2016 ◽  
Vol 693 ◽  
pp. 3-10
Author(s):  
Jia Rui Wang ◽  
Ping Fa Feng ◽  
Zhi Jun Wu ◽  
Ding Wen Yu ◽  
Jian Fu Zhang
Keyword(s):  
High Speed ◽  
Thermal Contact ◽  
Convective Heat Transfer Coefficient ◽  
Thermal Characteristics ◽  
Experimental System ◽  
Research Field ◽  
Motorized Spindle ◽  
Fe Modelling ◽  
Simulation Accuracy ◽  
Modelling Method

Finite element simulation is an effective method to study the thermal characteristics of high-speed motorized spindle, how to improve the simulation accuracy has become the key point of this research field. This paper presents a FEA method using ANSYS to precisely predict the thermal characteristics of high-speed spindle. Firstly, the heating and cooling characteristics of high-speed spindle are analyzed, main heating source, convective heat transfer coefficient, and thermal contact resistance are calculated. Secondly, FEA model of the machine center is built, the temperature field and thermal deformation of the spindle system are simulated. Thirdly, an experimental system to test thermal characteristics is designed, simulation results are compared with the experimental results. The result shows that the simulation errors are controlled in a relative low range, the FE modelling method can precisely predict the thermal characteristics of the motorized spindle.

scholarly journals Thermal Characteristics Analysis for Motorized Spindle System of CNC Machining Center

2019 ◽  
Vol 257 ◽  
pp. 02003
Author(s):  
Xiaolei Deng ◽  
Xinghui Zhang ◽  
Mucheng Zhang ◽  
Yibo Zhou ◽  
Huan Lin ◽  
...  
Keyword(s):  
Thermal Characteristics ◽  
Thermal Error ◽  
Cnc Machining ◽  
Transfer Coefficients ◽  
Motorized Spindle ◽  
Element Analysis ◽  
Spindle System ◽  
Heat Transfer Coefficients ◽  
Machining Center ◽  
Characteristics Analysis

Based on the comprehensive analysis of the heat sources of the motorized spindle system, the thermal loads, including the heat generation of bearing friction and the electromagnetic loss of the built-in motor, are carried out for a machining center motorized spindle system. And then, the convective heat transfer coefficients of the whole spindle system are analyzed. The thermal characteristics of the motorized spindle system are calculated by finite element analysis. The steady state temperature field distribution of the motorized spindle is obtained. It provides some references for improving the thermal characteristics of the motorized spindle and reducing the difficulty of thermal error compensation.

Research on Precision Grinding System and Key Technology Based on PMAC-PC

2010 ◽  
Vol 97-101 ◽  
pp. 1942-1946 ◽  
Author(s):  
Ke Zhang ◽  
Yu Hou Wu
Keyword(s):  
High Speed ◽  
Thermal Characteristics ◽  
Numerical Control ◽  
Measurement Technology ◽  
Work Piece ◽  
Force Analysis ◽  
Precision Grinding ◽  
Motorized Spindle ◽  
Key Technology ◽  
Grinding System

A high speed experimental numerical control grinding system based on PMAC-PC was designed, realized machining and measurement integration. High speed motorized spindle finite elements dynamics and thermal characteristics, force analysis of linear motor feed element and parameters setting method based on PMAC, work piece roundness error measurement technology were researched. The grinding experiment and dynamic measurement indicated that the system possessed good following performance and stability; grind the elliptic work piece in the system.

Thermal Errors Simulation and Modeling of Motorized Spindle

2010 ◽  
Vol 154-155 ◽  
pp. 1305-1309 ◽  
Author(s):  
Liang Yu Cui ◽  
Da Wei Zhang ◽  
Wei Guo Gao ◽  
Xiang Yang Qi ◽  
Yu Shen
Keyword(s):  
Neural Network ◽  
Prediction Models ◽  
Simulation Analysis ◽  
Rbf Neural Network ◽  
Thermal Characteristics ◽  
Cnc Machine ◽  
Motorized Spindle ◽  
Neural Network Method ◽  
Thermal Errors ◽  
Network Method

Thermal errors of motorized spindle are of great importance to affect final machining precision of CNC machine tool. Thermal characteristics simulation analysis of motorized spindle is realized by ANSYS; thermal errors test measurement is completed based on 5-point method; and prediction models of thermal errors are constructed by multiple linear regression (MLR) method, Back Propagation (BP) neural network method and Radial Basis Function (RBF) neural network method respectively. The results of simulation and experiments illustrate that simulation results can represent thermal characteristics of motorized spindle, whose degree of confidence mainly depending on setting of thermal load and boundary conditions properly or not; RBF neural network model has highest prediction precision for thermal errors of motorized spindle based on test data.

Thermal Characteristics Finite Element Analysis and Temperature Rise Experiment for High Speed Motorized Spindle

2011 ◽  
Vol 52-54 ◽  
pp. 1206-1211 ◽  
Author(s):  
Huai Xing Wen ◽  
Mei Yan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Temperature Rise ◽  
High Speed ◽  
Thermal Characteristics ◽  
Analysis Model ◽  
Ansys Software ◽  
Motorized Spindle ◽  
Element Analysis

The thermal characteristics of the motorized spindle determines maching qualities and cutting capabilities, and is one of the important factors influencing the precision of the high speed NC machine tool. To improve the performance of the high speed machine tool, it is important to study the thermal characteristics of the motorized spindle. It had been studied in two ways: one is finite element analysis by Ansys software, in which the finite element analysis model was built. According to the actual working condition, the heat source and the heat transfer coefficient of every part are calculated. On this basis, the temperature field and temperature rises were gotten in Ansys software. The other way is temperature rises experiment on the motorized spindle test platform. The result was shown in the form of curve. These two ways shown the same result: the highest temperature rise appears in the area of electromotor, then followed by the rolling bearing .The result provides the necessary theory basis for optimizing the structure of the motorized spindle and establishes a basis for the research and application about the high speed spindle.

Review on the Dynamics of High-Speed Motorized Spindle System

2013 ◽  
Vol 712-715 ◽  
pp. 1435-1438
Author(s):  
Xiao Ming Dai ◽  
Hong Jun Wang ◽  
Qiu Shi Han
Keyword(s):  
High Speed ◽  
Electromechanical Coupling ◽  
System Modeling ◽  
Thermal Characteristics ◽  
Rolling Bearing ◽  
Dynamics Modeling ◽  
Motorized Spindle ◽  
Research Directions ◽  
Spindle System ◽  
Spindle Bearing

The research on the dynamics modeling in theory and experiment for the rolling bearing-motorized spindle system including bearing modeling and spindle-bearing system modeling is reviewed. The main factors influencing the motorized spindle system dynamics are analyzed combined with the pratical engineering, which include thermal characteristics, high-speed effects and electromechanical coupling. The methods for dynamics modeling including the transfer matrix method and finite element method are related. Finally, the research directions on the dynamics of rolling-bearing motorized spindle system are forecasted.

Sign in / Sign up

Export Citation Format

Share Document