INFORMATION FLOW MANAGEMENT IN CUSTOMER-ORIENTED SHEET METAL PRODUCTION
Table Of Contents
- <p> <b>TABLE OF CONTENTS</b> </p><p>
- 1.INTRODUCTION ....................................................................................................1 </p><p>
- 1.1Background ....................................................................................................1 </p><p>
- 1.2Research problem, targets and limits.............................................................2 </p><p>
- 1.3Thesis structure ..............................................................................................3</p><p>
- 2.LITERATURE REVIEW .........................................................................................4 </p><p>
- 2.1Reserch methodology and materials ..............................................................4 </p><p>2.
- 1.1Literature review..............................................................................4 </p><p>2.
- 1.2Case studies......................................................................................5 </p><p>2.
- 1.3Information analysis.........................................................................6 </p><p>
- 2.2Design ............................................................................................................7 </p><p>
- 2.3Programming..................................................................................................8 </p><p>2.
- 3.1Numerical control systems...............................................................9 </p><p>2.
- 3.2Manual part programming .............................................................11 </p><p><br></p><p><br></p><p><br></p><p><br></p><p>2.
- 3.3Computer-assisted part programming............................................12</p><p>2.
- 3.4Part programming using CAD/CAM .............................................13 <br></p><p>2.
- 3.5Manual data input...........................................................................15 </p><p>2.
- 3.6Nesting ...........................................................................................15 </p><p>
- 2.4Flat processing .............................................................................................17</p><p> 2.
- 4.1Laser cutting...................................................................................18 </p><p>2.
- 4.2Punching and forming....................................................................19 </p><p>2.
- 4.3Shearing .........................................................................................20 </p><p>
- 2.5Bending ........................................................................................................21 </p><p>2.
- 5.1Geometric tolerances......................................................................21 </p><p>2.
- 5.2Press brakes....................................................................................22 </p><p>2.
- 5.3Springback .....................................................................................25 </p><p>2.
- 5.4Bend allowance ..............................................................................25 </p><p>
- 2.6Assembly......................................................................................................27 </p><p>2.
- 6.1Joining processes............................................................................27 </p><p>2.
- 6.2Mechanical fastening .....................................................................30</p><p>
- 2.7Cost structure of sheet metal parts...............................................................31 </p><p>
- 3.INFORMATION AND OPERATION MANAGEMENT TOOLS........................32 </p><p>
- 3.1Basics of information and knowledge..........................................................32 </p><p>
- 3.2Product Data Management (PDM)...............................................................33</p><p>
- 3.3Enterprise Resource Planning (ERP) ...........................................................34</p><p>
- 3.4Computer-Aided Design (CAD) ..................................................................35 </p><p>
- 4.CURRENT SITUATION........................................................................................38 </p><p>
- 4.1Available systems.........................................................................................39 </p><p>
- 4.2Transition to the new system environment ..................................................42 </p><p>
- 4.3Increasing the machine base.........................................................................43 </p><p>
- 5.MAPPING THE SHEET METAL PROCESS .......................................................45 </p><p>
- 5.1Design process .............................................................................................45 </p><p>5.
- 1.12D design with Microstation..........................................................46 </p><p><br></p><p>5.
- 1.23D design with Pro E .....................................................................48 </p><p>5.
- 1.3Re-manufactured products.............................................................49 </p><p>5.
- 1.4Publication of drawings .................................................................50 </p><p>
- 5.2Part programming and nesting process ........................................................50 </p><p>
- 5.3Laser cutting, punching, and shearing process.............................................53 </p><p>
- 5.4Bending process...........................................................................................53 </p><p>
- 6.CHALLENGES AND DEVELOPMENT ..............................................................55 </p><p>
- 6.1Information flow errors................................................................................55 </p><p>
- 6.2Human based errors......................................................................................57 </p><p>
- 6.3Revision management ..................................................................................59 </p><p>
- 6.4Avoiding manual work.................................................................................60 </p><p>
- 6.5Other observations .......................................................................................6</p><p>2
- 7.CONCLUSION.......................................................................................................64 REFERENCES................................................................................................................65 </p><p>APPENDIX A: Interview questions </p><p>APPENDIX B: Process flow chart – CAD design phase </p><p>APPENDIX C: Process flow chart – Part programming and nesting phase </p><p>APPENDIX D: Process flow chart – Laser cutting, punching and shearing </p><p>APPENDIX E: Process flow chart – Bending </p>
Project Abstract
<p> <b>ABSTRACT</b></p><p> The research problem in this thesis is related to the sheet metal NC process and its requirements from the point of view of data transferring. The aim is to map the current state of sheet metal production of the company with its information flows, and to find the potential problems associated with it. The company is known to be implementing a new CAD design environment and the product information management system. In addition, the company’s intention is to introduce a new laser machine that will require new software to support nesting. This change has progressed to the point where the current process needs to be mapped and the related information flows identified. The research is limited to examining the sheet metal process from design to production, focusing on the programming department. The focus will be on identifying the information related to the programming department and in the stages of the production process where programming is associated. A qualitative case study, in which the interviews of the target persons have been conducted as semi-structured, is used as a research method. The knowledge of sheet metal production is expanded with a literature study that provides the basics needed to conduct a case study. For the basis of the case study, the process flow charts were developed based on the most important aspects of the sheet metal process of the company. These process flow charts present the most important work phases and the related information flow. The potential problem and challenging areas were identified based on the created process charts. These are presented in a thematic way with the aim of providing development suggestions. The challenges identified in the research were related to potential errors in the information flows as well as human based errors, to revision management, and to avoiding manual and non-productive work. In addition to this, challenges were found in the extra optimization of programming and the programming of press brakes or its absence. <br></p>Project Overview
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