| 齿轮温挤精密成形工艺数值模拟 |
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| 引用本文： | 仇明侠,张治民,张宝红.齿轮温挤精密成形工艺数值模拟[J].锻压技术,2005,30(3):53-55. |
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| 作者姓名： | 仇明侠 张治民 张宝红 |
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| 作者单位： | 中北大学,材料科学与工程系,山西,太原,030051;中北大学,材料科学与工程系,山西,太原,030051;中北大学,材料科学与工程系,山西,太原,030051 |
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| 摘 要： | 为了降低齿轮的成形力，在研究闭式镦挤成形齿轮法的基础上，提出了一种新的直齿圆柱齿轮温挤径向导流——约束分流两步成形工艺方案，采用三维大变形弹塑性有限元法对以闭式镦挤和以温挤径向导流——约束分流两步成形方式的成形情况进行了数值模拟分析。得到了新工艺成形过程的应力分布图以及载荷——形成曲线。数值分析结果表明：约束分流成形与闭式成形相比可明显降低成形力，有利于金属的流动，保证了齿形充填良好，改善模具受力条件，提高成形工件的质量。
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| 关 键 词： | 齿轮 温挤 成形工艺 数值模拟 |
| 文章编号： | 1000-3940(2005)03-0053-03 |
Numerical simulation of warm extruding precision forging technology of spur gears |
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| QIU Ming-xia,ZHANG Zhi-min,ZHANG Bao-hong.Numerical simulation of warm extruding precision forging technology of spur gears[J].Forging & Stamping Technology,2005,30(3):53-55. |
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| Authors: | QIU Ming-xia ZHANG Zhi-min ZHANG Bao-hong |
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| Abstract: | In order to decrease precision forming force of spur gear, in this paper, the new warm extruding forming method has been brought forward on the base of the common closed-die forming method,which is the technology of 2 steps forging of spur gears utilizing radius direction leaded flow and constrained divided-flow method.3D elastic-plastic finite-element is used to simulate the forging process in detail.The effective stress distribution and the load-stroke curve of the whole process are got.The results of the simulation show that compared with closed-die forming, 2 steps forging can evidently decrease the forming force, improve metal flow , ensure completely filled gear teeth , meliorate the stress state of die and improve the quality of the formed spur gear. |
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| Keywords: | spur gears warm extruding precision forging technique numerical simulation |
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