Computer-Implemented System And Method For Determining Spatial Locations Of Fixture Element Fixturing Points On A Part To Be Manufactured

摘要

Automated fixture layout is approached in two distinct stages. First, the spatial locations of clamping points on the work piece are determined to ensure immobility of the fixtured part under any infinitesimal perturbation. Second, spatial locations are matched against a user-specified library of reconfigurable clamps to synthesize a valid fixture layout or configuration that includes clamps that are accessible and collision free. The spatial locations matching during the second stage can be the same spatial locations chosen in the first stage to ensure immobility, or a different set of spatial locations.

主权项

1. A computer-implemented method for determining spatial locations of fixture element fixturing points on a part to be manufactured, comprising:
retrieving a part model and a constraint volume for a part to be manufactured, the part model and the constraint volume comprising geometric representations of the part respectively defining the boundary of the part and a region defined about the boundary of the part; identifying locations on the boundary of the part against which to contact a plurality of fixture elements that are affixed to a base plate, each identified location being both reachable by at least one fixture element and situated where that fixture element will not interfere with a manufacturing tool's approaches to the part; and evaluating a plurality of potential configurations as exhibiting form closure over the part when fixtured by a select plurality of the fixture elements in contact with the part at the identified locations comprised in each of the potential configurations.