Abstract : in this paper , the cold die forging technology of the counter gear was analysed , the cold die forging was designed , the blank dimensions and the figure were calculated and choosed , the allowable deformation degree was checked , the equipment for the deformation was selected , the blank treatments before the cold die forging were draw up and the die structure of the cold die forging was designed 文摘:分析了计数器齿轮的冷模锻工艺，设计了冷模锻件图，计算及选用了毛坯尺寸及形状，验算了许可变形程度，选择了变形用的设备，拟制了冷模锻前的毛坯处理及设计了冷模锻模具结构。
The 60mn hot die forging hydraulic press , with weight 30 % reduction of the main body compared with the traditional hydraulic press because of plate frame structure designed through new idea by adopting transverse pre - tightening technology mainly embodying the design and manufacturing level of the heavy - duty hydraulic presses at modem times , the first one with independent intellectual property right designed by china itself and a transverse pre - tightening plate - frame hydraulic press with max . tonnage in the world at present 摘要60mn热模锻液压机，采用横向预紧技术，创新设计了板框式本体结构，与传统液压机相比，机械本体重量减少了30 % ，采用的主要技术集中体现了当代大型液压机设计和制造技术水平，成为中国自行研制的具有自主知识产权的首台，并且也是目前世界上最大吨位的横向预紧板框式液压机。
