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| 汽车变速器结合齿温锻-冷整形复合精锻工艺及模具研究 |
| Compound Precision Forging of Warm Forging-cold Shaping and Die for Automatic Transmission Conjunction Gear |
| Received:November 10, 2013 Revised:November 10, 2013 |
| DOI：10.3969/j.issn.1674-6457.2014.01.002 |
| 中文关键词: 结合齿 数值模拟 整体精锻 成形工艺 |
| 英文关键词: conjunction gear numerical simulation precision forging cold shaping |
| 基金项目: |
| Author Name | Affiliation | | ZHANG Chi | School of Material Science&Engineering, Chongqing University of Technology, Chongqing 400054, China | | HE Qiao | School of Material Science&Engineering, Chongqing University of Technology, Chongqing 400054, China | | LUO Jing | School of Material Science&Engineering, Chongqing University of Technology, Chongqing 400054, China | | HE Qiao | School of Material Science&Engineering, Chongqing University of Technology, Chongqing 400054, China |
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| 中文摘要: |
| 目的 解决汽车变速器结合齿整体成形过程中的难充满、尺寸精度差、脱模困难等问题。 方法 对结合齿精锻成形过程进行了数值模拟和工艺参数的优化,并对比模拟分析了结合齿齿高和齿厚方向的 15 组数据。 结果 得出了最佳的齿高和齿厚方向余量,分别为 0 . 5 mm 和 0 . 1 mm;采用镶块剖分式模具结构和径向挤压成形技术来解决结合齿倒锥成形和脱模等问题,延长了模具寿命。 结论 采用温锻-冷整形复合精密锻造工艺,结合齿的表面质量好,产品精度高。 |
| 英文摘要: |
| Objective To solve the problems of being not fully filled, low dimensional accuracy and demolding difficulty in the integrated forging of automatic transmission conjunction gear. Methods Numerical stimulation( Deform) was carried out in the precision forging of conjunction gears and the technological parameters were optimized. Fifteen groups of data of the tooth height and thickness were stimulated and contrast analyzed. Results The optimal allowances for the tooth height and thickness were respectively 0. 5 mm and 0. 1 mm by Deform simulation. Problems in the forming of back taper teeth of conjunction gear and demolding were solved by using the die structure of insert blocks and radial extrusion technology, and the tooling life was prolonged. Conclusion Compound precision forging of warm forging - cold shaping could produce conjunctions gears with high dimensional accuracy and good surface finishing. |
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