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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Design and implement a micro assembly machine for mechanical watch movements.

January 2009 (has links)
Yang, Fan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 73-77). / Abstracts in English and Chinese. / Abstract --- p.I / 摘要 --- p.III / Table of Contents --- p.V / List of Figures --- p.i / List of Tables --- p.A / Chapter 1. --- Introduction --- p.1 / Chapter 1.1. --- Literature Review --- p.1 / Chapter 1.2. --- Project Background --- p.10 / Chapter 1.3. --- Objectives --- p.14 / Chapter 2. --- Design of the micro assembly machine --- p.16 / Chapter 2.1. --- Aspects that need to be met --- p.16 / Chapter 2.2. --- Hardware of the micro assembly machine --- p.17 / Chapter 2.2.1. --- The vision system --- p.18 / Chapter 2.2.2. --- The control system --- p.19 / Chapter 2.2.3. --- The Actuating System --- p.21 / Chapter 2.2.3.1. --- The gripper --- p.22 / Chapter 2.2.3.2. --- The three axes --- p.28 / Chapter 2.2.3.3. --- The workbench --- p.31 / Chapter 2.2.4. --- The complete structure of the micro assembly machine --- p.32 / Chapter 2.3. --- The main features of the micro assembly machine --- p.34 / Chapter 3. --- Implementation --- p.35 / Chapter 3.1. --- Vision system --- p.35 / Chapter 3.2. --- Setting up the vision system --- p.36 / Chapter 3.3. --- Efficiency and form of the transferred data --- p.38 / Chapter 3.4. --- Control system --- p.39 / Chapter 3.4.1. --- Structure of the control system --- p.40 / Chapter 3.4.2. --- System control process --- p.44 / Chapter 3.4.3. --- The GUI --- p.45 / Chapter 3.4.4. --- Data processing --- p.48 / Chapter 3.5. --- Cooperation between the vision system and the control system --- p.49 / Chapter 4. --- Experimental results --- p.51 / Chapter 4.1 --- Accuracy in the x and y directions --- p.51 / Chapter 4.2 --- Effect of the vision system on accuracy --- p.57 / Chapter 4.3 --- Depth of the assembled ruby bearings --- p.62 / Chapter 4.4 --- Gradient of the rubies --- p.65 / Chapter 4.5 --- Analysis of the experimental data --- p.68 / Chapter 5 --- Conclusion and Future Work --- p.70 / References --- p.73
12

Sensing for automated assembly : direct calibration techniques for determining part-in-hand location /

Pohlhammer, Christopher M. January 1997 (has links)
Thesis (Ph. D.)--University of Washington, 1997. / Includes bibliographical references (leaves [164]-169).
13

Graphical integration of robot programming and sequence planning for mechanical assembly /

Gu, Yunqing, January 1998 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, 1999. / Restricted until June 2000. Bibliography: leaves [79]-88.
14

Reinforcement learning for intelligent assembly automation

Lee, Siu-keung., 李少強. January 2002 (has links)
published_or_final_version / Industrial and Manufacturing Systems Engineering / Doctoral / Doctor of Philosophy
15

A Novel Tension-Member Follower Train for a Generic Cam-Driven Mechanism

LaPierre, Jeffrey A 13 June 2008 (has links)
"Many assembly machines for consumer products suffer from the fact that the mechanisms used to impart the necessary assembly motions to the product are orders of magnitude more massive than the product payloads that they carry. This characteristic subsequently limits the operating speed of the machine. If the follower train could be made less massive without sacrificing accuracy and control, it would therefore allow higher speeds. It is well-known that structures that carry only tensile loads can be much less massive than those that must also carry compressive loads. This concept is demonstrated in many structures, such as the suspension bridge. This master’s project set out to investigate the feasibility of a tension-member follower train for a generic cam-driven pick and place mechanism. This system was first dynamically simulated using a computer model, and then tested by constructing a proof of concept prototype. A cam-driven, low-mass tension member (in this case a spring steel strip over pulleys) under spring preload was used to replace the bellcranks and connecting rods typical of a conventional follower train. The system was determined to be feasible and will allow for increased operating speeds at potentially lower costs as an additional benefit."
16

Optimal machine selection and task assignment in an assembly system design problem

Lamar, Bruce William January 1980 (has links)
Thesis (M.S.)--Massachusetts Institute of Technology, Alfred P. Sloan School of Management, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND DEWEY. / Bibliography: leaves 128-129. / by Bruce William Lamar. / M.S.
17

Modelling and analysis of unreliable manufacturing assembly networks with finite storages

Ammar, Mostafa H. (Mostafa Hamed) January 1980 (has links)
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Bibliography: leaves 160-163. / by Mostafa Hamed Ammar. / M.S.
18

Economic-technological modeling and design criteria for programmable assembly machines.

Lynch, Paul Michael January 1976 (has links)
Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering. / Microfiche copy available in Archives and Engineering. / Vita. / Includes bibliographical references. / Ph.D.
19

Task descriptors for automated assembly

Simunović Simunović, Sergio Natalio. January 1976 (has links)
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1976 / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. At head of title: T-624. / Includes bibliographical references. / by Sergio N. Simunovic S. / M.S. / M.S. Massachusetts Institute of Technology, Department of Mechanical Engineering
20

Design of apparatus for threaded part mating experiments

Ranyak, Paul Stephen. January 1981 (has links)
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1981 / Vita. / Includes bibliographical references. / by Paul Stephen Ranyak. / B.S. / B.S. Massachusetts Institute of Technology, Department of Mechanical Engineering

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