70 and an increase of the standard deviation of about

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Unformatted text preview: timal position of the locator p1 on the secondary datum is always coincident with the Y-coordinate of the pattern barycentre. The optimal position of the locators p 2 and p 3 is a quasi-symmetric configuration with respect to the X-coordinate of the pattern barycentre. Table 1. Optimal position of 2-1 pins of the considered 2-hole plates Case 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Proposed approach hole 1 hole 2 p1 p2 p3 Probability 40, 70 80, 70 0, 70 0, 0 120, 0 0.3136 20, 80 60, 80 0, 80 0, 0 102, 0 0.3013 60, 20 100, 20 0, 20 18, 0 120, 0 0.3013 20, 20 60, 20 0, 20 0, 0 102, 0 0.3013 60, 80 100, 80 0, 80 18, 0 120, 0 0.3013 20, 60 20, 80 0, 70 0, 0 47, 0 0.3078 80, 60 80, 80 0, 70 36, 0 120, 0 0.3241 20, 20 20, 40 0, 30 0, 0 47, 0 0.3078 80, 20 80, 40 0, 30 36, 0 120, 0 0.3241 0.3092 mean 0.0100 std. deviation p1 0, 70 0, 80 0, 20 0, 20 0, 80 0, 70 0, 70 0, 30 0, 30 Barycentre method p2 p3 Probability 0, 0 120, 0 0.3136 0, 0 80, 0 0.2939 40, 0 120, 0 0.2939 0, 0 80, 0 0.2939 40, 0 120, 0 0.2939...
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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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