【摘要】 对于汽油机曲柄这样的锻件,有较大的圆盘形头部,而杆部细长,从常用的锻件制坯和成形工艺的比较,采用楔横轧制坯,然后预锻、终锻成形是比较理想的工艺方案。本文从生产的实际需要出发,提出了在汽油机曲柄成形中采用轧、锻联合成形工艺,在楔横轧制坯中又引入了组合式楔横轧模具的设计思路。探讨了组合式楔横轧模具的设计方法,使汽油机曲柄的轧、锻联合成形工艺更具实用价值。更多还原

【Abstract】 This paper deals with the problem of making a forged article such as the crank of gasoline engine,which consists of a big disc and a long thin rod.Through making a comparison between the common pre-blocking techniques and forming technology,the author finds that it is an ideal plan to adopt cross wedge rolling technique for pre-blocking and then implementing forging operations.This paper puts forward a rolling and forging combined process of the crank of gasoline engine,which proceeds from productive requirements.By this means,the author tries to introduce an designing idea which combines wedge-rolling tools in the performing process,to probe into the method of combined wedge-rolling tools design,and bring practical values to the rolling and forging combined process of the crank.更多还原