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.

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.

Study on Steady-State Temperature Field and Thermal Deformation for Permanent Magnet Synchronous Motorized Spindle

2011 ◽  
Vol 305 ◽  
pp. 340-343 ◽  
Author(s):  
Yong Lu ◽  
Sheng Dong Gao ◽  
Zhao Peng Hao
Keyword(s):  
Temperature Field ◽  
Steady State ◽  
Permanent Magnet ◽  
High Speed ◽  
Thermal Deformation ◽  
Thermal Characteristics ◽  
Element Model ◽  
Motorized Spindle ◽  
Steady State Temperature ◽  
Characteristics Analysis

Motorized spindle thermal deformation is a major factor affecting the accuracy of high-speed machine tool, previous studies have focused on asynchronous motorized spindle, however, in this paper, permanent magnet synchronous motorized spindle is the research object. At first, the finite element model of thermal characteristics of motorized spindle is established base on its thermal characteristics analysis. The second, study on the distribution of the spindle steady-state temperature field, effect of spindle speed and bearing lubrication on thermal deformation of spindle. The results provide a strong theoretical basis for the design and use of spindle.

FEA of Thermal Characteristic of Motorized Spindle Based on ANSYS Workbench

2013 ◽  
Vol 437 ◽  
pp. 36-41
Author(s):  
Kai Kang Chen ◽  
Fu Ping Li ◽  
Yong Sheng Zhao
Keyword(s):  
High Speed ◽  
Thermal Deformation ◽  
Thermal Characteristic ◽  
Thermal Error ◽  
Machining Accuracy ◽  
Motorized Spindle ◽  
Thermal Boundary Conditions ◽  
Steady State Temperature ◽  
Transient Thermal ◽  
Ansys Workbench

Thermal deformation of high-speed motorized spindle has an important effect on improving the machining accuracy. In this paper the thermal boundary conditions of thermal deformation, including the heat generation of the motor and bearing and heat transfer coefficient, are calculated to simulate the steady-state temperature field distribution, transient thermal analysis and thermal deformation in ANSYS Workbench. They provide theoretically the data for the thermal error compensation of the spindle system.

scholarly journals USING INVERSE METHOD FOR EVALUATING THERMAL CHARACTERISTICS OF A MICRO HIGH SPEED MOTORIZED SPINDLE

2018 ◽  
Vol 54 (5A) ◽  
pp. 238
Author(s):  
Ngo Thi Thao
Keyword(s):  
Direct Problem ◽  
High Speed ◽  
Thermal Deformation ◽  
Inverse Method ◽  
Gradient Methods ◽  
Thermal Characteristics ◽  
Conjugate Gradient Methods ◽  
Heat Sources ◽  
Motorized Spindle ◽  
Inverse Solutions

A combination of finite element and conjugate gradient methods to establish an inverse method for estimating heat sources as well as temperatures of a micro high speed motorized spindle is presented in this article. The proposed method is simple in constructing the direct problem by using COMSOL software. Experiment setup and measurement process are introduced. Results show that inverse solutions agree with experimental data based on temperatures at only one measurement point. Influence of speed on heat sources and temperatures is indicated. Temperature distribution in the spindle is also given and discussed. From these findings, it can be said that the proposed method is appropriated for inversely determining the heat source in micro high speed motorized spindle. The obtained results provide useful information to estimate thermal deformation.

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.

Theoretical analysis and experimental study on thermal stability of high-speed motorized spindle

2017 ◽  
Vol 69 (6) ◽  
pp. 1049-1065 ◽  
Author(s):  
Zhe Liu ◽  
Wei Chen ◽  
Desheng Li ◽  
Wenjing Zhang
Keyword(s):  
Thermal Stability ◽  
Experimental Study ◽  
Theoretical Analysis ◽  
High Speed ◽  
Thermal Deformation ◽  
Motorized Spindle ◽  
Content Type ◽  
Front End ◽  
Temperature Distributions ◽  
Thermal Stability Of

Purpose In high-speed processing, the influence on the machining accuracy of a machine tool is greatly caused by the thermal deformation of the motorized spindle; a further study on the thermal characteristics of the spindle is given in this paper. This study aims to reduce the thermal error and improve the performance of the machine tool by discussing the relationships between the temperature distributions and rotating accuracy caused by the thermal deformations of the spindle. Design/methodology/approach The paper opted for a method combining the theoretical analysis and the experimental study to study the thermal stability of the high-speed motorized spindle. First of all, a finite element model of the spindle was built with ANSYS, whereby temperature distributions and the thermal deformations were successively obtained at different speeds. And then, both the temperature field and the rotating accuracy of the motorized spindle were measured simultaneously by the thermal stability experiment. Finally, the experimental and theoretical results were compared and validated. Findings The thermal stability of the motorized spindle was studied in this paper, and some findings from the study were as follows: the spindle’s rotating accuracy maintained good in X direction but bad in Y and Z directions in terms of the deformations; the higher front-end temperature of the spindle which can significantly affect the rotating accuracy is needed to be controlled mainly; the recovery speed of the spindle deformation lagged behind the temperature’s fallback speed; the vibration graph about radial rotating sensitivity synthesized by X1 and X2 presented a trifoliate shape. Originality/value Based on a built test-bed which can synchronously measure the motorized spindle’s temperature distribution and rotating accuracy with five-point method, the coupling effects of the thermal deformation and temperature are embodied, and not only the vibration graph but also the thermal tilt angles can be gained. Therefore, considering the influence of the thermal deformation on the heat generated by the bearings, the paper fulfilled a study by which it was obtained that the front-end temperature of the spindle, which was higher and could significantly affect the rotating accuracy, needed to be controlled mainly.

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 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.

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