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150 Fig. 7. RE dimensional tolerancing case study parts and assembly Reverse Engineering – Recent Advances and Applications Fig. 8. Critical RE-features of the RE dimensional tolerancing case study parts Hole dM_h (mm) Fh (mm) Ra_h h #1 22.136 0.008 h #2 h #3 22.128 22.091 0.008 0.003 3.8 h #4 22.078 0.004 Uh = 0.009mm Shaft dM_s (mm) Fs (mm) Ra_s s #1 21.998 0.003 s #2 s #3 21.984 21.979 0.005 0.006 2.4 s #4 21.972 0.005 Us = 0.012mm Table 2. Input data related to case study RE-features Suggested Fits � 22.000 Η12 / g7, Η12 / g8, Η12 / g9, Η12 / g10, Η12 / g11, Η12 / h8, Η12 / h9, Η12 / h10, Η12 / h11 � 22.050 Η11 / e9, Η11 / e10, Η11 / e11, Η11 / f10, D2 D1 D3 D2 D1 D3 � 22.000 D10 / h8, D11 / h8, D12 / h8, E11/ h8, E12/ h8, F11 / h8, F12 / h8, G11 / h8, G12 / h8, H12 / h8 D10 / h9, D11 / h9, D12 / h9, E11/ h8, E12/ h9, F11 / h9, F12 / h9, G11 / h9, G12 / h9, H12 / h9 D10 / h10, D11 / h10, D12 / h10, E11/ h10, E12/ h10, F11 / h10, F12 / h10, G11 / h10, G12 / h10, H12 / h10 D10 / h11, D11 / h11, D12 / h11, E11/ h11, E12/ h11, F11 / h11, F12 / h11, G11 / h11, G12 / h11, H12 / h11
A Systematic Approach for Geometrical and Dimensional Tolerancing in Reverse Engineering Η11 / f11, Η11 / g7, Η11 / g8, Η11 / g9, Η11 / g10, Η11 / g11, Η11 / h8, Η11 / h9, Η11 / h10, Η11 / h11, Η12 / e9, Η12 / e10, Η12 / e11, Η12 / f10, Η12 / f11, Η12 / g7, Η12 / g8, Η12 / g9, Η12 / g10, Η12 / g11 Η12 / h8, Η12 / h9, Η12 / h10, Η12 / h11 Preferred Fits � 22.050 Η11 / e9, Η11 / h8, Η11 / h9, Η11 / h11 � 22.000 D10 / h9, D11 / h9, D10 / h8, D11 / h8 Table 3. Sets of Suggested and Preferred fits for the case study � 22.050 F10 / h10, F11 / h10, F12 / h10, G10 / h10, G11 / h10, G12 / h10, H11 / h10, H12 / h10 F10 / h11, F11 / h11, F12 / h11, G10 / h11, G11 / h11, G12 / h11, H11 / h11, H12 / h11 � 22.000 D10 / h9, D11 / h9, D10 / h8, D11 / h8, D10 / h11, D11 / h11 Fig. 9. Selected ISO 286 fits applied on the case study mechanical drawing 6.2 Application example of RE geometrical tolerancing A new optical sensor made necessary the redesign of an existing bracket that had to be fastened on the old system through the original group of 4 x M5 threaded bolts, Figure 10. The accuracy of the location and orientation of the sensor bracket was considered critical for the sensor proper function. Bracket redesign had to be based on two available old and not used reference components. In the following, the method application is focused only on the allocation of position tolerances for the four bracket mounting holes. The problem represents, apparently, a typical fixed fastener case. For the chapter economy the input data and the produced results for the allocation of the position tolerance for the through hole H1, Figure 11, are only here presented and discussed. Standard diameter of the holes is 5.3mm ± 0.1mm and minimum clearance between hole and M5 screw 0.2mm.The weight coefficient in the relationships (21) was taken k=1. 151
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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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Integrating Reverse Engineering and
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Part 3 Reverse Engineering in Medic
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238 5. Summary and discussions Reve
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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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