装炉方式对等高齿热处理畸变一致性的影响研究
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摘要
等高齿作为汽车主减速器的重要零部件之一,其畸变一致性直接影响着齿轮接触区一致性的好坏。为了有利于等高齿热处理畸变一致性的控制,研究了其在不同装炉方式下的齿轮热处理畸变情况。研究表明,边缘位置的主动齿轮畸变量稍大于中心位置;主被动齿轮底层位置畸变一致性明显低于上层和中层位置;稀疏装炉齿轮畸变一致性明显低于密集装炉。同时,改进了被动齿轮装炉料架,为优化热处理工装和提高等高齿热处理畸变一致性提供了依据,对齿轮热处理畸变一致性提高方面提出了一些参考意见。
The constant-depth tooth hypoid gear is one of the important parts of the main reducer. The distortion of consistency directly affects the consistency of the gear contact area. In order to facilitate the control of the consistency of the heat treatment distortion of the constant-depth tooth,the gear heat treatment distortion under different furnace loading methods is studied. The study shows that the distortion of the main teeth at the edge position is slightly larger than the center;the deformation of the main bottom layer is significantly lower than that of the upper and middle layers;the deformation consistency of the sparse charging gear is significantly lower than that of the intensive loading furnace. At the same time, the tooth mounted charge frame is improved, the basis for the optimization of heat treatment fixture and improve the gear heat treatment distortion consistency is provided, some suggestions on improving the heat treatment distortion consistency of the gear are put forward.
The constant-depth tooth hypoid gear is one of the important parts of the main reducer. The distortion of consistency directly affects the consistency of the gear contact area. In order to facilitate the control of the consistency of the heat treatment distortion of the constant-depth tooth,the gear heat treatment distortion under different furnace loading methods is studied. The study shows that the distortion of the main teeth at the edge position is slightly larger than the center;the deformation of the main bottom layer is significantly lower than that of the upper and middle layers;the deformation consistency of the sparse charging gear is significantly lower than that of the intensive loading furnace. At the same time, the tooth mounted charge frame is improved, the basis for the optimization of heat treatment fixture and improve the gear heat treatment distortion consistency is provided, some suggestions on improving the heat treatment distortion consistency of the gear are put forward.
引文
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[2]涂小龙.重型汽车齿轮热处理变形控制[D].杭州:浙江大学,2005:8-15.
[3]牛万斌.齿轮的淬火冷却和变形控制[J].热加工工艺,2000(1):27-29.
[4]陈咏华,邓凯,李丽荣.圆柱齿轮热处理畸变控制与机理分析[J].青海大学学报(自然科学版),2006,35(3):8-11.
[5]马广锋,王宝奇.螺旋伞齿从动轮渗碳淬火畸变及控制[J].金属热处理,2010,35(4):108-110.
[6]陈德顺,彭晓东,易鸿宇,等.汽车前桥锥齿轮渗碳淬火工艺分析与研究[J].热加工工艺,2014,43(10):125-127.
[7]韩树,宋新风,王树韬,等.大直径盘式锥齿轮渗碳淬火畸变的控制[J].金属热处理,2008,33(8):183-185.
[8]雷声.热处理变形的控制[J].机械工程师,2008(5):74-75.
[9]黄丽宋,汤宏智.汽车后桥螺旋伞齿轮热处理畸变的控制[J].热处理,2009,24(3):76-79.