Gm Global Technolgoy Operations, Inc.

Gopalakrishna Shastry

Ashish Kumar Gupta

Robert Bruce Tilove

Narahari K Hunsur

Wayne Cai

Sandipan Bandyopadhyay

The disclosure relates to the automatic selection of a set of candidate weld guns and candidate orientations for the weld guns from a library of existing weld guns. Minimum values for weld points and test orientations are calculated. The calculated minimum values are added to the library. As each point is added to the library, the set of weld guns that are candidates for the weld point at the tested orientation may be efficiently retrieved, and a matrix of candidate weld guns and orientations is produced.

Method and system for automated selection of a set of candidate weld guns including orientations of the selected guns

A method of weld design for a work piece is provided. The work piece may be a unitary piece or a multi-component piece. The method includes determining a manufacturing feasible region of the work piece satisfying one or more predetermined manufacturing requirements including accessibility of welding components. The method includes determining a performance feasibility function satisfying one or more predetermined performance factors as applied in a performance simulation of the work piece. The workpiece may have a varying number of welds. An optimized weld design may be determined by minimizing an objective function, defined as a summation of the number of welds and the performance feasibility function, within the manufacturing feasible region. The optimized weld design is configured to have a minimum number of welds, and concurrently satisfy the predetermined manufacturing requirements and the performance factors.

Method of optimizing weld design for concurrent consideration of performance and manufacturing requirements

A method for estimating a plurality of geometrical parameters defining the size of a weld gun that has particular application for automatically selecting a weld gun for a welding operation. The method includes iteratively estimating a plurality of geometric parameters based on part section curves corresponding to a direction of approach of the weld gun to weld point of the plurality of weld points. Thereafter, a set of valid weld gun sizes are calculated based on the estimated plurality of geometric parameters. Similarly all the valid weld gun sizes are calculated corresponding to each of the weld gun approach direction. Further, each set of the valid gun sizes are estimated for each of the weld point for the welding operation. Finally, a weld gun for performing the welding operation is selected based on the set of weld gun sizes corresponding to the welding operation.

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Bengaluru, India

Gopalakrishna Shastry