| 摘要 |
A system for assembling parts on a sheet to form a panel includes a fixture for holding the sheet and presenting the sheet broadside to a robot. A rack within the reach of the robot holds a plurality of end effectors, each having an interconnect which can be gripped and centered by the robot when it picks up by the end effector. The end effectors include, 1) a drilling end effector having a drill for drilling holes in the sheet on centers determined by movement of the robot; 2) a routing end effector having a router for routing peripheral edge portions of the sheet along lines determined by movement of the router; 3) a probe end effector having a probe for sensing contact with surfaces on an index device mounted on the fixture at a known location to serve as a reference monument. A part program constituting a data set having complete panel assembly detail design information obtained directly from original digital engineering part definition records, including locations on the sheet of all fastener holes for fastening the parts needed to make up the panel, and the position on the sheet of the peripheral edge portions thereof relative to the holes, the part program also including machine instructions for directing the movement of the robot to carry the end effectors to the locations on the sheet at which machining operations are needed to fasten the parts in the correct locations and to produce peripheral routed edge portions of the correct configuration. A control computer controls the motion of the robot in accordance with the instructions contained in the part program and automatically performs absolute coordination probing to verify the accuracy of the robot and fixture positioning.
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