摘要:
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针对直齿圆柱齿轮冷成形难度大的问题 ,提出了闭式镦挤—约束孔分流两步成形实用化工艺方案和基于变位理论的齿形凹模修正设计方法 ,并对 15、 4 5、 2 0 Cr Mn Ti钢质直齿圆柱齿轮冷精锻工艺进行了系统研究。研究结果表明 ,两步成形法是降低直齿圆柱齿轮冷精锻成形力的有效方法 ,提出的齿形凹模修正设计方法可获得较高的齿形精度
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It is difficult to forming accurate spur gears by the cold forging The two\|step forming technology combined closed die\|forging with constrained hole divided\|flow is presented The cold precision forging technology of spur gears are researched systematically for 15,45 and 20CrMnTi steel The results show that the two\|step forming technique is effective on decreasing cold precision forging load of spur gears and the cold forged 20CrMnTi steel spur gears have higher precision by applying the teeth\|shape modification method proposed
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基金项目:
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国家“九五”攻关项目!(96 -A22-03-02)
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作者简介:
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参考文献:
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1 R Kopp.Current Development Trends in Metal FormingTechnology.J.Mater.Process.Technol.,1996 ,6 0 :1~ 10
2 V Magard.Cold Forging of Net or Near-net-shapeComponents.J.Mater.Process.Technol.,1992 ,35 :42 9~ 433
3 寇淑清 .三维复杂锻造过程数值模拟及直齿轮冷精锻成形研究 .吉林工业大学博士论文 ,1998.
4 K Kondo.精密冷模锻新工艺的开发 .世界塑性加工最新技术译文集 .北京 :机械工业出版社 .1987.70 1~ 70 9
5 寇淑清 .付沛福等 .冷精锻直齿轮的工艺方案与充填规律 .农业机械学报 .1997,2 8:118~ 12 3
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