DEEP ROLLING SPLIT-PIN FILLETS OF CRANKSHAFTS

摘要

Machine and method for deep rolling fillets of split-pins of engine crankshafts. Each split-pin comprises neighboring and arcuately offset crank pins (24, 26) connected between counter weigths and has a centralized splitter fence (32) which receives side loads from the connecting rods. Annular fillets (38, 40) are formed between the pins and opposite sides of the splitter fence as well as (95, 97) between the pins and their associated counter weights. Limbs of the fillets at the splitter fence that describe the overlap of the split-pins are deep rolled with a higher load for improving yield strength.