How Do Welding Fixtures Improve Cab Body-in-White Dimensional Accuracy?
A fixture is where paper geometry becomes steel. Each pin, each support pad and each clamp carries one design reference into real sheet metal, which is where the arguments start. Get the datums stable and what comes off the fixture is what the designers drew, openings and mounts and gaps and all. Give the same cab one bad locating reference and the error does not stay put anywhere. It travels. Some weeks later the plant finds a door nobody can shut, or a windshield refusing to sit flat, and nobody connects it back to one pin. The practical recipe has three parts. Take the datums from the stiffest functional features […]