A process in which material is folded back on itself or over a mating part. This is a multistage forming operation. First, a sharp-angle bend is made ; next, the bend is closed using a flat punch and a die. See teardrop hem, rope hem, and open hem.
Getting back to basics—Human element enhances a machine’s potential - by Josh Welton In 2014 media headlines claimed that Toyota was replacing robots with humans in its factories. Not so, but the real story is important and encouraging.
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