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Unformatted text preview: Free space forms a single channel that wraps around the horizontal and vertical boundaries, since the conﬁguration at ±π coincide. The deﬁning equations of the chan- Tolerance Synthesis of Higher Kinematic Pairs 291 Figure 1; (a) Geneva pair; (b) conﬁguration space. nel boundary curves express the coupling between the part orientations. The horizontal segments represent contacts between the locking arcs, which hold the wheel stationary. The diagonal segments represent contacts between the pin and the slots, which rotate the wheel. The contact sequences of the pair are the conﬁguration space paths in free and contact space. In a typical sequence, the driver rotates clockwise (decreasing θ) and alternately drives the wheel counterclockwise with the pin (increasing ω ) and locks it with the arcs (contact ω ). We [Kyung and Sacks, 2003a] model kinematic variation by generalizing conﬁguration space to parametric parts with tolerances. Kinematic variation occurs in contact space. As the parameters vary, the part shapes and motion axes vary, which causes the contact curves to vary. The unio...
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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