一、前言我厂是生产开式压力机的专业厂之一。为适应四个现代化的要求,锻压机械产品急需“更新换代”。我厂自行设计、制造了开式压力机的改形产品JA21-35型35吨开式固定台压力机。其结构特点是,整机为箱体式、曲轴由横放改为纵放、飞轮齿轮由机身两侧改在机身内部、机身由铸件改为钢板焊接等,体积小,重量比原来同吨位的产品减轻三百多公斤。外形如 I. Introduction I plant is one of the professional factory producing open presses. In order to meet the requirements of the four modernizations, forging machinery products urgently needed “replacement”. I plant its own design, manufacture of open presses JA21-35 35 tons of open-type fixed station presses. Its structural features are: the whole machine is a box type, the crankshaft is changed from horizontal to vertical, the flywheel gear is changed from the two sides of the fuselage to the inside of the fuselage, the fuselage is changed from casting to steel plate welding, etc., the volume is small and the weight is lighter than the original The same tonnage of products to reduce more than 300 kilograms. Shape like