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研究生： Ung Thanh Cong
Ung - Thanh Cong
論文名稱： Control of Small Assembly Tolerance in Machining Slide Hinge model
Control of Small Assembly Tolerance in Machining Slide Hinge model
指導教授： 林清安
Alan C. Lin
口試委員: 修芳仲
Fang-Jung Shiou
賴景義
Jiing-Yih Lai
學位類別： 碩士
Master
系所名稱： 工程學院 - 機械工程系
Department of Mechanical Engineering
論文出版年： 2009
畢業學年度： 97
語文別： 英文
論文頁數： 47
外文關鍵詞： Assembly tolerance
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    • A new design of slide hinge composed of many small parts is machined by milling. Accuracy is the main issue to be addressed in this thesis. The error compensation method is used to machine one of the slide parts to achieve the specified assembly tolerance. Some measurements are undertaken to ascertain that the tolerance is achieved. In addition, the method of analyzing the sources of error that contributes to the machining of the slide mechanism is described in this thesis.

    A new design of slide hinge composed of many small parts is machined by milling. Accuracy is the main issue to be addressed in this thesis. The error compensation method is used to machine one of the slide parts to achieve the specified assembly tolerance. Some measurements are undertaken to ascertain that the tolerance is achieved. In addition, the method of analyzing the sources of error that contributes to the machining of the slide mechanism is described in this thesis.

    1. Introduction 1 1.1 Background 1 1.2 Literature review 2 1.3 Problem statement and motivation 4 1.4 Research methodology 5 1.5 Disposition 5 2. General concepts 6 2.1 Milling overview and historical development 6 2.1.1 Milling overview 6 2.1.2 Historical development of milling machine 7 2.2 Machining parameters 8 2.2.1 Spindle speed 8 2.2.2 Feedrate 10 2.3 Sources of error 11 2.3.1 Static errors 11 2.3.2 Dynamic errors 13 2.4 Machining method 13 2.5 Material properties 15 2.5.1 Properties of Aluminum 15 2.5.2 Properties of POM 15 3. Machine parts 17 3.1 Machine and part zero point 17 3.2 Machining the slide plate 18 3.2.1 Machine the bottom face 18 3.2.2 Machine the top of the part 19 3.3 Inspect the dimensions of the bottom plate 21 4. Analyze and solve problems 23 4.1 Problem 1 23 4.2 Problem 2 24 4.2.1 Factors affect the assembly tolerance 26 4.2.2 Factors affect the performance of the assembly 32 5. Methods to control the tolerance and analyze errors 35 5.1 Method to control the tolerance 35 5.1.1 Preparing specimens 35 5.1.2 Machining 36 5.1.3 Measuring 36 5.1.4 Making up machining 38 5.2 Analyze sources of error in machining the slots 41 5.2.1 Tool’s structure 42 5.2.2 Profile of the cutter 42 6. Conclusions 35 6.1 Results 45 6.2 Further studies 46 7. References 47

    1. Lars Stecher Hansen and Morten Saxbol, Slide cover for a communication unit, US patent, Apr.9, 2002
    2. Joni Jantti and Toumas Leinonen, Slideable keypad, US patent, Jan. 5, 2006.
    3. Griffin and Jason T., hybrid portrait-landscape handheld device with trackball navigation and QWERTY hide-away keyboard, European Patent Application EP1895381, May 2008.
    4. Bor-Wen Cheng and Saeed Maghsoodloo, Optimization of mechanical assembly tolerance by incorporating Taguchi quality loss function, Elsevier Science Ltd, 1995.
    5. Ronal A. Walsh and Denis Cormier, Machining and metalworking handbook, McGraw-Hill, 2006.

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