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.

Dynamic Design of a High-Speed Motorized Spindle-Bearing System

2010 ◽  
Vol 132 (3) ◽  
Author(s):  
Shuyun Jiang ◽  
Shufei Zheng
Keyword(s):  
High Speed ◽  
Critical Speed ◽  
Dynamic Stiffness ◽  
Processing Condition ◽  
Rolling Bearing ◽  
Design Sensitivity ◽  
Structure Parameters ◽  
Motorized Spindle ◽  
Spindle Bearing ◽  
Bearing System

This technical brief presents a dynamic model based on the traditional transfer matrix method (TMM) and Jones–Harris nonlinear rolling bearing model to study the effects of the extended structure parameters on the vibration behavior of a high-speed motorized spindle-bearing system. The first critical speed and the dynamic stiffness of the high-speed motorized spindle-bearing system are systematically studied. A design sensitivity analysis of the structure parameters is then conducted to identify the main factor to affect the first critical speed of the spindle-bearing system. The results show that the processing condition, the shaft shoulder, the dimension of motor, and the bearing arrangement are sensitive to the spindle dynamic behavior. The TMM model of the spindle-bearing system is verified by measuring the high-speed motorized spindle overall dynamic stiffness.

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.

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.

scholarly journals Nonlinear Dynamic Analysis and Chaos Prediction of Grinding Motorized Spindle System

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Weitao Jia ◽  
Feng Gao ◽  
Yan Li ◽  
Wenwu Wu ◽  
Zhongwei Li
Keyword(s):  
Nonlinear Dynamic ◽  
High Speed ◽  
Chaotic Behavior ◽  
Nonlinear Dynamic Analysis ◽  
Phase Portraits ◽  
Impact Factors ◽  
Nonlinear Dynamic Model ◽  
Motorized Spindle ◽  
Spindle System ◽  
The Impact

The paper determines the impact factors of dynamics of a motorized spindle rotor system due to high speed: centrifugal force and bearing stiffness softening. A nonlinear dynamic model of the grinding motorized spindle system considering the above impact factors is constructed. Through system simulation including phase portraits and Poincaré map, the periodic behavior and chaotic behavior of the nonlinear grinding motorized spindle system are revealed. The threshold curve of chaos motion is obtained through the Melnikov method. The conclusion can provide a theoretical basis for researching deeply the dynamic behaviors of the grinding motorized spindle system.

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.

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