The basis of this statistical approach presented at

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Unformatted text preview: 2+20ry3S2 ≥ 0 17.68lrx1S2+101.41lry1S2+20lry2S2+ltz3S2 +17.68rx1S2-3.54rx3S2+101.41ry1S2+20ry2S2-20ry3S2 ≥ 0 -10.61lrx1S2-101.41lry1S2-20lry2S2+ltz3S2 -10.61rx1S2-3.54rx3S2-101.41ry1S2-20ry2S2+20ry3S2 ≥ 0 lrx1S2 lry1S2 ltz1S2 lry2S2 ltz2S2 Slipping Plane 1S2 -ltz1S2-tz1S2 Slipping Plane 2S2 -ltz2S2-tz2S2 Plane 3S2 ltz3S2 3.54lrx1S2-15.91lry1S2-22.5lry2S2ltz3S2+3.54rx1S2-15.91ry1S222.5ry2S2-tz3S2 Machining Machining defects DM Surface Constraints CM TP,Pi Slipping Table 2; Set-up 2 manufacturing table 4.2. Floating positioning A second example (figure 5) has been developed in [Vignat et al., 2005]. Here is presented the determination of the positioning deviation of the workpiece presented figure 5 for the case of a plane/centering/locating positioning in set-up 2 of the process plan. Assuming that: • In set-up 1, surfaces plane 1, cylinders 2 and 3 are machined with defects. • In set-up 2, the primary positioning connection is between part-holder plane 1S2 and workpiece plane 1, the secondary one between cylinder 2S2 and cylinder 2...
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