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152 Fig. 10. Reference RE part and mating parts assembly Reverse Engineering – Recent Advances and Applications The CAD model of the redesigned new bracket was created in Solidworks taking into account the measured data of the reference components and, as well as, the new sensor mounting requirements. Datum and feature (hole H1) related input data are given in Table 4. Four candidate datum features A, B, C and D were considered, Figure 11. In step (a) 10 candidate DRFs (|Α|Β|C|, |Α|C|B|, |Α|Β|D|, |Α|D|B|, |Α|C|D|, |Α|D|C|, |D|A|C|, |D|A|B|, |D|B|A|, |D|C|A|) were produced by the algorithm for 7 position tolerance sizes, 0.06-0.18mm and consequently 10 sets of candidate theoretical dimensions, [(CP (ij)X, CP (ij)Y), i=3,…9, j=1,…,10]. Negligible form and orientation deviations of datums A and D reduced the DRFs to the first six of them as |D|A|C|≡|Α|D|C|≡|D|C|A| and |D|A|B|≡|Α|D|B|≡|D|B|A|, having thus provided for 751 suggested tolerances in the following step (b). A representative sample of these tolerances is shown in Table 5. Although computational time difference is not significant, it is noticed that the quantity of the suggested results is strongly influenced by the number of the initially recognized possible datum features, weight coefficient k of the constraints (21), parameter δ of the equations (23) and the number of the available reference components. dM (mm) Α|Β|C Α|C|B Α|Β|D Α|C|D Α|D|B Α|D|C XM1 Part1 5.291 YM1 7.023 5.972 7.031 5.961 7.025 50.981 31.014 5.964 31.007 50.980 31.011 50.978 XM2 Part2 5.244 YM2 6.988 6.036 7.004 6.019 6.987 51.028 30.973 6.017 30.962 51.026 30.971 51.012 Datum RFDF (mm) Part 1 Part 2 RO (mm) Part 1 Part 2 RODF (mm) Part 1 Part 2 A 0.008 0.011 0.005 0.006 B-0.024 /C-0.021 /D- 0.008 B-0.027/C-0.019 /D-0.007 B 0.026 0.023 0.012 0.010 A-0.041 /C-0.039 /D- 0.035 A-0.046/C-0.043 /D-0.042 C 0.016 0.021 0.016 0.011 A-0.042 /B-0.034 /D- 0.041 A-0.038/B-0.036 /D-0.033 D 0.005 0.008 0.003 0.007 A-0.010 /B-0.022 /C- 0.020 A-0.009/ B-0.025 /C-0.017 Table 4. Input data related to case study feature and datum
A Systematic Approach for Geometrical and Dimensional Tolerancing in Reverse Engineering TPOS DRF X Y Material Modifier TPOS DRF X Y 153 Material Modifier � 0.060 |Α|Β|C| 7.000 6.000 MMC � 0.120 |Α|D|C| 30.950 50.950 MMC � 0.060 |Α|C|B| 6.950 5.950 LMC � 0.120 |Α|D|C| 30.900 51.000 LMC � 0.060 |Α|C|B| 7.100 6.000 LMC . . . . . . . . . . . � 0.060 |Α|Β|D| 7.050 51.000 LMC � 0.140 |Α|Β|C| 7.050 6.000 MMC � 0.060 |Α|C|D| 30.950 6.000 MMC � 0.140 |Α|C|B| 7.000 5.950 - � 0.060 |Α|D|B| 31.000 51.000 MMC � 0.140 |Α|C|B| 7.050 6.000 - � 0.060 |Α|D|B| 31.050 51.050 LMC � 0.140 |Α|Β|D| 7.000 51.100 LMC � 0.060 |Α|D|C| 30.950 51.000 MMC � 0.140 |Α|C|D| 31.050 6.000 MMC � 0.060 |Α|D|C| 31.050 50.950 LMC � 0.140 |Α|C|D| 31.100 6.000 LMC . . . . . . . . . . . � 0.140 |Α|C|D| 31.100 6.050 LMC � 0.080 |Α|Β|C| 7.000 6.000 - � 0.140 |Α|D|B| 30.950 51.000 - � 0.080 |Α|Β|C| 7.100 6.000 LMC � 0.140 |Α|D|B| 30.900 51.000 MMC � 0.080 |Α|C|B| 7.050 6.000 MMC � 0.140 |Α|D|C| 30.950 50.950 - � 0.080 |Α|Β|D| 7.000 51.000 - � 0.140 |Α|D|C| 30.950 51.000 - � 0.080 |Α|Β|D| 7.100 51.000 LMC � 0.140 |Α|D|C| 30.900 51.000 MMC � 0.080 |Α|C|D| 31.000 6.000 - . . . . . . . . . . . � 0.080 |Α|D|B| 31.000 51.000 MMC � 0.160 |Α|Β|C| 6.950 5.950 - � 0.080 |Α|D|B| 30.950 51.000 LMC � 0.160 |Α|Β|C| 6.950 6.000 - � 0.080 |Α|D|C| 31.000 6.000 - � 0.160 |Α|C|B| 7.000 5.950 - � 0.080 |Α|D|C| 30.095 51.050 MMC � 0.160 |Α|C|B| 7.150 6.000 LMC � 0.080 |Α|D|C| 31.050 51.050 LMC � 0.160 |Α|Β|D| 7.000 51.100 MMC . . . . . . . . . . . � 0.160 |Α|Β|D| 7.100 51.000 LMC � 0.100 |Α|Β|C| 7.000 6.000 - � 0.160 |Α|C|D| 30.950 6.000 - � 0.100 |Α|C|B| 7.000 6.000 - � 0.160 |Α|C|D| 30.900 5.900 LMC � 0.100 |Α|C|B| 7.050 6.000 - � 0.160 |Α|D|B| 31.000 51.050 - � 0.100 |Α|Β|D| 7.000 51.000 - � 0.160 |Α|D|C| 31.050 51.000 - � 0.100 |Α|Β|D| 6.950 51.000 LMC � 0.160 |Α|D|C| 30.900 51.000 MMC � 0.100 |Α|C|D| 31.000 6.000 - � 0.160 |Α|D|C| 30.950 50.900 LMC � 0.100 |Α|C|D| 30.950 5.950 MMC . . . . . . . . . . . � 0.100 |Α|D|B| 31.000 51.050 MMC � 0.180 |Α|Β|C| 7.050 6.000 - � 0.100 |Α|D|B| 30.950 50.900 LMC � 0.180 |Α|Β|C| 7.150 6.000 LMC � 0.100 |Α|D|C| 30.950 51.000 LMC � 0.180 |Α|C|B| 6.950 5.950 - � 0.100 |Α|D|C| 31.050 50.950 LMC � 0.180 |Α|C|B| 6.900 6.000 LMC . . . . . . . . . . . � 0.180 |Α|Β|D| 6.900 51.000 MMC � 0.120 |Α|Β|C| 7.050 6.050 MMC � 0.180 |Α|Β|D| 6.900 51.050 MMC � 0.120 |Α|Β|C| 7.100 6.000 LMC � 0.180 |Α|C|D| 31.050 6.000 - � 0.120 |Α|C|B| 7.050 5.900 LMC � 0.180 |Α|C|D| 31.100 6.100 LMC � 0.120 |Α|C|B| 7.100 5.950 LMC � 0.180 |Α|D|B| 30.900 51.050 MMC � 0.120 |Α|Β|D| 7.000 50.900 LMC � 0.180 |Α|D|B| 31.050 51.000 MMC � 0.120 |Α|C|D| 31.050 6.000 MMC � 0.180 |Α|D|B| 31.100 51.000 LMC � 0.120 |Α|C|D| 31.050 6.000 LMC � 0.180 |Α|D|C| 30.950 51.000 - � 0.120 |Α|D|B| 31.000 51.050 MMC � 0.180 |Α|D|C| 31.050 50.950 MMC � 0.120 |Α|D|B| 30.900 50.950 LMC � 0.180 |Α|D|C| 30.900 50.900 LMC Table 5. Representative sample of application example suggested position tolerances
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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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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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