The NTR(New TR) bending and upsetting process of crankshaft has characteristic of flexible matching between horizontal upsetting and vertical bending forming speed. The influences of die velocity on the full fiber crankshaft corner collapse quantity were studied. The geometric model of the corner collapse quantity was set up. And the main factors for the die velocity were analyzed through building the upsetting and bending speed models. The forming process of the 6G32 crankshaft was numerically simulated at...
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