Unformatted text preview: s chain can be identified using a connection graph. In figure 2, contact surfaces are first identified between the parts, before a connection graph can be constructed to establish the dimension chain around the FR1 condition on the mechanism. Then we have to distribute the FR1 condition between the different tolerance zones identified in the corresponding dimensional chain. More specifically, the kinematic chain obtained contains three internal pairs (FE0, FE1), (FE2, FE3), (FE4, FE5) as well as one kinematic pair (FE1, FE2). Note that there are two functional requirements: FR1, which applies between (FE0, FE5) and FR2 between (FE3, FE4). We also see in the tolerance chain, that FR1 and FR2 are dependant. Re-Design of Mechanical Assemblies for Tolerance Analysis 101 Figure 2: Kinematic chain identification In this example, we assume that the reference frames are in the middle of the tolerance or contact uncertainty zone and that they are associated to the second element in the pairs defined above....
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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.
- Spring '10
- The Land