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Abstract: A systematic methodology for automatic planning of modular
fixture for dowel-pin system is presented. The approach constructs all
the feasible fixture plans of a part with linear and circular edges by
using the linkage mechanism theory. Based on the geometric relationships
between locator triplet and three boundary edges of a part, the loading
and unloading motion of the part are classified into two kinds, i.e.
translational motion and rotational motion. Moreover the notions of the
locator visible cone and the pivotal locator are put forward, and
utilized to analyze the accessibility of locators. To effectively
analyze the feasibility of clamping the part, and generate all of the
feasible clamp positions, the notions of the triangle of instant
rotational center and the same direction edge of the triangle are set
forth and utilized.
Key words: Modular fixture Automated fixture planning Accessibility
analysis Clamping analysis
CLC No: TP391.72
TG754
国家自然科学基金资助项目(69973045).
Received 20010110, received
in revised form 20010528
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