分別使用對(duì)角線和步進(jìn)對(duì)角線兩種測(cè)量方法,通過(guò)測(cè)量機(jī)床工作臺(tái)不同直線的定位誤差來(lái)確定三軸數(shù)控加工中心的空間誤差。到目前為止,空間誤差測(cè)量方法的相關(guān)研究已經(jīng)日漸成熟,但缺少針對(duì)對(duì)角線和步進(jìn)對(duì)角線測(cè)量方法所得平均空間誤差的研究分析。本文基于對(duì)角線和步進(jìn)對(duì)角線測(cè)量方法提出一種實(shí)驗(yàn)誤差分析方法;采用步進(jìn)對(duì)角線測(cè)量方法,通過(guò)英國(guó)Renishaw公司的XL-80型激光干涉儀,分別測(cè)量六種不同路徑的定位誤差,再利用實(shí)驗(yàn)誤差分析方法得出不同路徑相應(yīng)的空間誤差。對(duì)角線和步進(jìn)對(duì)角線測(cè)量方法的起點(diǎn)和終點(diǎn)相同,并且分別給出了詳細(xì)的測(cè)量方法。為了對(duì)比測(cè)量結(jié)果,本文建立了一個(gè)數(shù)學(xué)模型;通過(guò)實(shí)驗(yàn)測(cè)量得出對(duì)角線測(cè)量方法的平均空間誤差小于步進(jìn)對(duì)角線測(cè)量方法,直線測(cè)量誤差隨機(jī)床工作臺(tái)測(cè)量點(diǎn)位置和高度的變化而變化;結(jié)果表明,對(duì)角線測(cè)量方法優(yōu)于步進(jìn)對(duì)角線測(cè)量方法。實(shí)驗(yàn)結(jié)果的目的是為了更好的了解和廣泛應(yīng)用兩種空間誤差測(cè)量方法對(duì)應(yīng)的平均空間誤差分析方法。 

【文章來(lái)源】：廣東海洋大學(xué)廣東省

【文章頁(yè)數(shù)】：108 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
Abstract
摘要
1 Introduction
    1.1 Problem Statement
    1.2 Thesis Outline
2 Research Background
    2.1 Literature Review
    2.2 Machining systems and a machine tool
    2.3 3-axis and5-axis machine tool
    2.4 Error,Accuracy and Resolution of a Machining System
    2.5 Error Budget
    2.6 Sources of Errors
        2.6.1 Error Classification
        2.6.2 Geometric Errors
        2.6.3 Kinematic Errors
        2.6.4 Thermal Errors
        2.6.5 Force-Induced Errors
        2.6.6 Other Errors
    2.7 Error Elimination Methodologies
        2.7.1 Error Avoidance or Precision Design
        2.7.2 Error Compensation
        2.7.3 Compensation Techniques
3 Measurement Methods
    3.1 Direct Measurement Method
        3.1.1 The Lase-Based Measurement Method
        3.1.2 The Gravity-Based Measurement Method
        3.1.3 Material-Based Measurement Method
    3.2 Indirect Measurements
        3.2.1 Artifacts Based Measurements
        3.2.2 Contour-Based Measurements
        3.2.3 Indirect Measurement From Direct Measurement Apparatus
    3.3 Error Measurement Devices
        3.3.1 Ball Bar
        3.3.2 Laser Tracker
        3.3.3 Laser Interferometer
    3.4 Line Methods and Shortcomings in Line Methods
        3.4.1 9-Line Measurement Method
        3.4.2 12-Line Measurement Method
        3.4.3 13-Line Measurement Method
        3.4.4 14-Line Measurement Method
        3.4.5 15-Line Measurement Method
        3.4.6 22-Line Measurement Method
        3.4.7 Diagonal Measurement Method
4 Mathematical Modeling of a Machine Tool
    4.1 Geometric Errors of a Machine Tool
        4.1.1 Inaccuracies Due to Geometric Errors
        4.1.2 Geometric error component
    4.2 Homogeneous Transformation Coordinates System of a Machine Tool and Carriage
    4.3 Derivation of Error Models of3-axis Vertical Machining Center(VMC1000p)
5 Experiment Methodology
    5.1 Specification of a Machine tool
    5.2 Laser System Components for Experiment Setup
        5.2.1 Renishaw’s Software Package
        5.2.2 XL Laser Head
        5.2.3 Tripod And Stage
        5.2.4 Height Adjustment
        5.2.5 XC Environmental Compensation Unit,Temperature Sensor and Material Temperature Sensor
        5.2.6 Mounting Kit for Attaching the Optics to Machine
        5.2.7 Linear Measurement Optics
        5.2.8 Swivel Mirror for Diagonal Measurement
    5.3 Linear Measurement Apparatus Setup
    5.4 Experimental Measurement by Using a Laser Interferometer
    5.5 Diagonal and Step-Diagonal Measurement
    5.6 Measurement by the Interferometer
        5.6.1 Diagonal Path Measurement
        5.6.2 Step-Diagonal or Path Measurements
6 Results
    6.1 Measurement Results
    6.2 Cosine Error,Abbe’s Offset Error,Dead Path Error And Other Errors
    6.3 Diagonal Measurement
    6.4 Step-Diagonal or Path Measurement
        6.4.1 Ax,Bx Line Measurement(Table7,Table8 )
        6.4.2 Ay Line Measurement(Table7)
        6.4.3 Az,Cz Line Measurement(Table7,Table9)
        6.4.4 By,Ey Line Measurement(Table8,Table11)
        6.4.5 Bz Line Measurement(Table8)
        6.4.6 Cx Line Measurement(Table9)
        6.4.7 Cy,Dy Line Measurement(Table9,Table10)
        6.4.8 Dx,Fx Line Measurement(Table10,Table12)
        6.4.9 Dz Line Measurement(Table10)
        6.4.10 Ex Line Measurement(Table11)
        6.4.11 Ez,Fz Line Measurement(Table11,Table12)
        6.4.12 Fy Line Measurement(Table12)
    6.5 Figures of Different Paths Measurement
    6.6 Mean error values of Diagonal and Step-diagonal measurements
    6.7 Mean error graphs of forward and reverse deviation
7 Conclusion and Future Framework
    7.1 Future work
Appendix
References
Acknowledgement


【參考文獻(xiàn)】：
期刊論文
[1]Research on volumetric error compensation for NC machine tool based on laser tracker measurement[J]. WANG JinDong & GUO JunJie State Key Laboratory for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an 710049,China.  Science China（Technological Sciences）. 2012(11)
[2]Error modeling, sensitivity analysis and assembly process of a class of 3-DOF parallel kinematic machines with parallelogram struts[J]. 黃田,李亞,唐國(guó)寶,李思維,趙興玉,David. J. Whitehouse,Derek G. Chetewyn,Xianping Liu.  Science in China（Series E:Technological Sciences）. 2002(05)



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