David,
I am sure you are correct the 'wiring' must take place at some point in the stamping operation. For one, the fender is too difficult to hold externally from the die and manually even with a roller die situation make the swaging to locate without deformation, the outer surface of the fender.
However, I am still very confused in my mind as to the number of operations needed to make the complete pressing. If the fender stamping is made first in the flat stage so the wheel arch is stamped and the swaging lip is produced not vertical but at an angle the wire could be entered and held by fixturization at either end then a formed punch with the correct wire radius might be used to make the swaging.
Its not like a progression tool, I don't see those two operations taking place in the same clamping. I do see the possibility of the stamping datums allowing the flat sheet to progress from one machine to another. Then finally the the fender forming operation takes place?
Maybe the factory videos might show this, I will have to look. I expect though there might have been multi operations involved on some of the major stampings.
I looked again yesterday at my original wired fenders, the 'curl' around the wire is perfect, there is no excess 'lip' material it just curles round the wire and stops. One small operation that has me foxed for sure.
However, to repair areas later the video Justin put on really opened my eyes its perfect for that but surly thinking about it just not possible for production.
Sometimes wouldn't it be nice if some 80 year old German guy who used to be a press operator would speak up and tell us!
Sorry for going on and on....
Roy
I am sure you are correct the 'wiring' must take place at some point in the stamping operation. For one, the fender is too difficult to hold externally from the die and manually even with a roller die situation make the swaging to locate without deformation, the outer surface of the fender.
However, I am still very confused in my mind as to the number of operations needed to make the complete pressing. If the fender stamping is made first in the flat stage so the wheel arch is stamped and the swaging lip is produced not vertical but at an angle the wire could be entered and held by fixturization at either end then a formed punch with the correct wire radius might be used to make the swaging.
Its not like a progression tool, I don't see those two operations taking place in the same clamping. I do see the possibility of the stamping datums allowing the flat sheet to progress from one machine to another. Then finally the the fender forming operation takes place?
Maybe the factory videos might show this, I will have to look. I expect though there might have been multi operations involved on some of the major stampings.
I looked again yesterday at my original wired fenders, the 'curl' around the wire is perfect, there is no excess 'lip' material it just curles round the wire and stops. One small operation that has me foxed for sure.
However, to repair areas later the video Justin put on really opened my eyes its perfect for that but surly thinking about it just not possible for production.
Sometimes wouldn't it be nice if some 80 year old German guy who used to be a press operator would speak up and tell us!
Sorry for going on and on....
Roy
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