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在摩擦压力机上采用闭式精锻工艺生产齿轮坯,与传统锤上模锻相比,可节约金属15～25％。本文对齿轮坯闭式精锻时金属流动规律进行了系统的实验研究,并对每一变形阶段的金属流动情况进行了力学分析,建立了数学力学模型,推导出每一变形阶段应力分布的计算公式,在理论上和实践上较好地解决了齿轮坯闭式精锻的关键技术问题,对生产实践具有一定的指导意义。
The use of closed precision forging presses in the production of gear blanks, compared with the traditional hammer on forging, saving 15 to 25% of metal. In this paper, a systematic experimental study on the metal flow during closed precision forging is carried out. The mechanical analysis of the metal flow at each deformation stage is carried out. The mathematical mechanics model is established and the stress distribution at each deformation stage is deduced Formula, in theory and in practice, solves the key technical problems of closed precision forging of gear blanks, which is of guiding significance to production practice.