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202 Reverse Engineering – Recent Advances and Applications 3.3 Company B Company B is one of three major national suppliers of hour meters for manufacturers of agricultural machinery and parts. The hour meter (a special timer) is an electricalmechanical device for controlling the length of engagement sessions on machines, equipment and stationary engines. Among its major applications we find: tractors and general agricultural machinery, forklifts, marine engines, industrial machines and similar mechanisms. This product was chosen for being one of the higher revenue generators for the company, but lately its competitive edge in the market has been threatened by competition from suppliers with more technologically advanced products; as a result, the company is compelled to redesign its product, focusing on reducing its production cost in order to at least maintain its position in the market. The research followed the steps of the integration model, proposed by Souza (2007), cited in Table 1, presented below. 3.3.1 Identify opportunity As for the redesign through Reverse Engineering, an hour meter has been chosen as a reference product from a European company, which has commercial dealings in Brazil. This was a joint decision of the production department and the marketing department of the company being studied. The chosen product was considered as a reference for having such high sales in this market. The technique of redesign, according to Otto and Wood (1998) was adaptive, in view of the need for new subsystems for the redesign of the hour meter to be produced by the company, object of study. The acquisition of the reference product was possible thanks to the financial support offered by Minas Gerais Research Support Foundation (FAPEMIG), with the announcement "Young Doctors Program", process EDT-538/07, which provided a resource for the research. It is worth notice that the product, result of his research, didn´t break any patent ou commercial property, once que solutions for the generated subsystems were different from those observed on the reference product. 3.3.2 Collecting and preparing the initial information This phase is the first one with involved technical characteristics. It has been carried out an initial survey of the marked on measuring instrument for machine panels, agricultural equipment and stationary engines. All information has been brought together, which could contribute for the integration of reverse engineering with DFMA and the RP: elaboration of the product structures (definition of sets and their components), mapping and cronoanalysis of the hour meter assembling process, definition of standard time for each step of the assembling process and the product assembling raising costs. A series of non structured interviews has been carried out with the mounting employees to identify their major difficulties on the hour meter assembling process. Table 4 shows some of the identified difficulties.
Integrating Reverse Engineering and Design for Manufacturing and Assembly in Products Redesigns: Results of Two Action Research Studies in Brazil 203 Set/Component Illustration Difficulties Adaptor set Main support and coil support Support plate glass and display Mug (external wrapping) Table 4. Diagnosis of the parts considered in the redesign Manual welding of wires on the adaptor (component injected in ABS). During welding, it could happen the melting of the component in ABS because of being close to the welding equipment, causing non-compliance of the component. The sets were assembled through welding, which if underdone could cause noncompliance on some components produced by ABS injection. For being welded linked, when a non-compliance occurs on some components, the disassembling may cause loss of one or two of the sets. The assemble of steel plate, display and glass is very difficult, once the clean glass can be touched by the assembling employees, being stained, forcing its disassemble for new cleaning. The display is made on aluminum (more expensive than steel, for example) and its manufacturing process needs stamping and a complete silk-screen process for recording of traces of marking time and engraving for the black and white painting. A different model of mug for any of the three models of hour meters, available for trade (one with lighting with rubber cushioning, another without lighting and another with a smaller size for a specific client).
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REVERSE ENGINEERING - RECENT ADVANC
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Contents Preface IX Part 1 Software
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Preface Introduction In the recent
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Preface XI and con’s related to t
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Preface XIII the step-by-step appli
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Part 1 Software Reverse Engineering
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4 Reverse Engineering - Recent Adva
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10 Reverse Engineering - Recent Adv
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58 2. Model driven architecture: An
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62 Fig. 1. Model, metamodels and tr
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100 Reverse Engineering - Recent Ad
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108 Table 1. Number of smoothers an
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1. Introduction 60 Surface Reconstr
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Surface Reconstruction from Unorgan
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1. Introduction A Systematic Approa
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A Systematic Approach for Geometric
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Page 167 and 168: A Systematic Approach for Geometric
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268 Fig. 6. A closed polygon mesh r
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272 3. Results Reverse Engineering
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