CAJ | 학술논문

目的：主要研究轴类件冷缩径后过渡锥面整形时，整形圆角R、变形量ε以及约束条件对整形效果的影响，及整形成功的可行性。方法通过选择不同的圆角R值、变形量ε值和约束条件，利用DeForm-3 D有限元模拟软件，对整形过程进行模拟分析，探究了几个参数对整形效果的影响。结果模拟结果获得了整形圆角R、变形量ε以及约束条件对整形效果的影响规律，发现在开式挤压下，整形圆角R为影响整形效果的主要参数；在半开式挤压下，变形量ε为影响整形效果的主要参数。结论开式挤压整形时R值的影响比较显著，在小R值的情况下，开式挤压整形不可行，而在R值达到锥面上下段直径的差值0．5倍以上时，整形可行。半开式挤压整形，主要影响因素为缩径总变形量ε，在总变形量ε小于35％时，整形可行，当ε大于35％时半开式整形基本不可行。
목적：주요연구축류건랭축경후과도추면정형시，정형원각R、변형량ε이급약속조건대정형효과적영향，급정형성공적가행성。방법통과선택불동적원각R치、변형량ε치화약속조건，이용DeForm-3 D유한원모의연건，대정형과정진행모의분석，탐구료궤개삼수대정형효과적영향。결과모의결과획득료정형원각R、변형량ε이급약속조건대정형효과적영향규률，발현재개식제압하，정형원각R위영향정형효과적주요삼수；재반개식제압하，변형량ε위영향정형효과적주요삼수。결론개식제압정형시R치적영향비교현저，재소R치적정황하，개식제압정형불가행，이재R치체도추면상하단직경적차치0．5배이상시，정형가행。반개식제압정형，주요영향인소위축경총변형량ε，재총변형량ε소우35％시，정형가행，당ε대우35％시반개식정형기본불가행。
To investigate the influence of reshaping fillet R, the reductionεand the constraint condition during cold re-shaping of ironing cone, and the possibilities of reshaping success.Through choosing different values of fillet R, reductionε and different constraint conditions, the reshaping process was analyzed using the finite element software DeForm-3D, and the influence of several parameters on the reshaping effect was studied.The influence law of the fillet R, the reduction εand the constraint condition on the reshaping effect was obtained by simulation.It was found that in open die extrusion, the main parameter influencing the reshaping effect was the fillet R, while in semi-open die extrusion, the main parameter in-fluencing the reshaping effect was the reductionε.The influence of fillet R was significant in open die extrusion.Open die extrusion reshaping was infeasible when the value of fillet R was small, and was feasible when the value of fillet R was lar-ger than 0.5 times of the difference in cone diameters of the upper and lower sections.The main influence factor was the I-roning reductionεin semi-open die extrusion reshaping.The reshaping was feasible when the value of the ironing reductionε was smaller than 35%, and was basically infeasible when the value of the ironing reductionε was larger than 35%.