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Abstract：
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The paper presents the results of an experimental investigation in cold precision forging of spur gear. The study to determine how the billet figure and die structure could influence the gear forming . The results show, that the key of cdd precision forging of large module spur gear is full filling tooth cavity, and changing billet figure could not influence material filling. When die structure is improved , the well-shaped product can be forged within a proper working pressure.
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Funds：
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西安交通大学科学研究基金资助项目
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AuthorIntro：
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Reference：
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1 林治平,陶泽球等直齿圆柱齿轮精锻工艺方案的研究锻压技术,1999,24(2):9～12
2 KKondo,KOhgaPrecisioncolddieforgingofaringgearbydividedflowmethodInt.J .Mach.Tools.Manu.fact.1995,35(8):1105～1113
3 NRChitkara,MABhuttrNear-netshapeforgingofspurgearforms:ananalysisandsomeexperimentsInt.J .Mech.Sci.1996,39(8～9):891～916
4 陈泽中,包忠诩等直齿圆柱齿轮精锻技术的研究进展金属成形工艺,1999,17(5):1～2
5 KKondo,TJitsunari,KOhgaInvestigationsoncolddieforgingagearutilizingdividedflowBulletinofJSME ,1985,28(244):2442～2450
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