Innovative Fixturing: Transmission Case, Case Study Transcript

This is a transmission case for an automotive manufacturer. This is one part per fixture. It again is an integral pallet and fixture design, using Continuous Pressure Hydraulics. But the unique thing about this particular fixture is this: You can see in the picture that this fixture is about halfway between the

inMotion Transcript From: 8/29/2008 Modern Machine Shop

This is a transmission case for an automotive manufacturer. This is one part per fixture. It again is an integral pallet and fixture design, using Continuous Pressure Hydraulics. But the unique thing about this particular fixture is this: You can see in the picture that this fixture is about halfway between the load position and the final machining position. The load position is horizontal out to the sheet metal that you see in front of the machine. The operator would slide this part, they call it a slide tray, these parts were part of a lean manufacturing system where the operators would grab hold of the parts and slide them down this tray, basically walk them from the load station to Machine 1, to Machine 2, to Machine 3, all the time just sliding them along this sheet metal slide tray. The fixture would be in its position with that large arbor that you see going through the housing there. That arbor would be horizontal where the operator could then just slide the part director directly onto that arbor. It would snap, the operator would snap it onto the fixture, the fixture would then tilt 90 degrees 'till that arbor was vertical for the machining operation, the part would clamp, we'd go through the machining sequence, and then the fixture would then swing back, laying the part back on top of the slide tray that you see, and the operator was able to pull it off and slide it down to the next station. So the use of Continuous Pressure Hydraulics allowed us to have this lift-and-rotate mechanism that gave the operator the flexibility he needed to operate this in a lean manufacturing system.

 

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