7th cirp intl seminar on cat ecole norm superieure

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Unformatted text preview: to the faces Pa and Pb. The T-Map in Fig. 5(b) is for the stackup to face Q from the Datum D2 on the gear cover. The maximum tilt of Q comes from the orientational tolerance t″Q on Q relative to JK and from tS /hH1-E2, where tS = tG1 + tE2 + tecc1 + tecc2 + tK is the positional misalignment of the two axes J and K on the spindle. Values tecc1 and tecc2 are the circular runouts of the two bearings. However, the maximum translational variation of Q is the sum of the tolerances on pocket depth (tCs) and width of the outer bearing race (tw). Therefore, position and tilt variations are not coupled, and the T-Map is a cylinder with height tCs + tw and radius tS. The T-Map in Fig. 5(c) is for the stackup from the hinge-pin on the frame to the target dx x dy rectangular face D1. Then, face M alone (tolerance tM) accounts for the lateral position of the arm from its contact with the frame of the saw, but it forms only a point contact. Presume at first that offset b (Fig. 3(a)) is zero. Since t...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.

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