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Abstract：
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For the driven spiral gear blank with internal diameter Ф105 mm, external diameter Ф170 mm and weight about 4 kg，the driven gear blank was shaped by open-type double-roller rotary forging. Based on the research of the shape and dimension of blank, the unilateral allowance of forgings was controlled within 1 mm to greatly increase the material utilization, and on the basis of ensuring the product qualification rate, the efficiency of machining was improved greatly to obtain the good economic benefit. Then, the rotary forging and shaping process of driven spiral gear blank was analyzed by Deform-3D software, and the qualified forgings without flash on the lower end face, with less flash on the upper end face and inner and outer diameters in accordance with requirements were gained by controlling the blank dimensions to improve the material utilization rate by 24.59%, which reduced the machining steps, simplified the process, increased the production efficiency and significantly improved the accuracy of gear blank. Thus, on this basis, the production practice was guided, and the production cycle was shortened. Furthermore, the final forgings were obtained by shaping test, the rationality and feasibility of the rotary forging and shaping process were proved. Finally, the small batch trial production was conducted, and the test results were good.
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Funds：
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国家自然科学基金面上项目（51875427）；重庆市技术创新与应用示范专项产业类重点研发项目(cstc2018jszx-cyzdX0094)
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AuthorIntro：
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白倩倩（1994-），女，硕士，工程师，E-mail：185674916@qq.com；通讯作者：朱春东（1963-），男，硕士，教授，E-mail：zhuchundong@whut.edu.cn
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Reference：
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