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Characteristics Analysis and Optimization for the Spindle Unit of High-speed & High-precision CNC Lathe

Author: LiuYang
Tutor: LiuLePing
School: East China Jiaotong University
Course: Mechanical and Electronic Engineering
Keywords: High - speed high-precision CNC lathe Spindle unit Spindle bearings Finite Element Method ANSYS Dynamics Thermal analysis Coupling analysis
CLC: TG519.1
Type: Master's thesis
Year: 2009
Downloads: 93
Quote: 1
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Abstract


With the increasing manufacturing CNC machining speed and accuracy requirements, the deepening of research on high-speed, high-precision CNC machine tools. High spindle speed of high-speed, high-precision CNC machine tools, large feed rate, high motion accuracy and high machining accuracy, with high precision and good dynamic performance and thermodynamic characteristics to guarantee the needs of its parts. Therefore, the performance evaluation of CNC machine tools in the design phase or improvements before molding optimization help to improve the whole quality, reliability and economy. This article is for the Department of Education of Jiangxi light mechatronics research focus of the project \The project is funded \Therefore, on the basis of the pre-project design and manufacture research. The thesis using finite element analysis, kinetic performance, and thermodynamic characteristics of the spindle unit for the project, the main theoretical models and characteristics analysis results with the actual situation than the verified. The main content of this paper is as follows: (1) a large number of access to information at home and abroad on the basis of comprehensive analysis of the current situation of the domestic and international high-speed cutting and high-speed, high-precision CNC machine tools, trends, key technologies and domestic major problems that need to be resolved. (2) analysis applied to the modeling of dynamics analysis method and its advantages and disadvantages; dynamics study based on the finite element method for high-speed high-precision CNC lathe spindle unit GSCK200A type. (3) the establishment of a three-dimensional finite element model of the parts of the GSCK200A high-speed, high-precision CNC lathe spindle unit, the necessary amendments in accordance with the actual situation. ANSYS software analysis and calculation of the relevant characteristics of the main components of the spindle and bearing spindle unit. Characteristics analysis results with the actual situation than the right, to be verified. (4) to study the thermodynamic characteristics of the spindle unit, using the finite element method to establish the thermodynamic model GSCK200A high-speed, high-precision CNC lathe spindle unit, to determine the main thermodynamic parameters of the spindle unit analysis. Coupled thermal - structural analysis of high-speed, high-precision CNC lathe spindle and bearing force and thermal deformation of high-speed CNC lathe spindle unit. (5) key parts of the spindle unit optimization analysis, provide reasonable solutions improve the structure of the high-speed lathe spindle unit and stiffness. Through this study, for the design and development of high-speed, high-precision CNC lathes GSCK200A type provides theoretical support, can also provide a reference for similar technical problems in the structural design of high-speed machine tool spindle unit.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Turning and lathe ( lathe ) > Program control lathes and CNC lathes
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