【作者】 王明海；

【导师】 邓效忠；

【作者基本信息】 河南科技大学 ， 机械设计及理论， 2010， 硕士

【摘要】 准双曲面齿轮是汽车底盘结构中广泛应用的关键传动构件。随着我国汽车工业的飞速发展,准双曲面齿轮的需求量也在成倍增长。目前我国现有的准双曲面齿轮制齿设备,大多采用湿式加工且生产效率偏低。为了满足生产的需要,开发效率高、操作简单、节能环保的干式数控准双曲面齿轮加工机床非常必要。本论文主要研究内容如下:1.根据准双曲面齿轮大轮成形法的切齿原理和方法,建立在铣齿机上加工准双曲面齿轮的数学模型,并对其运动参数进行了求解。介绍了高速干式切削原理,拟定出满足干式切削的数控成形铣齿机的设计方案。2.对机床结构进行了设计,并根据干式切削对机床性能的要求对机床各部分进行优化改进,如采有整体床身、八级转速刀具箱、变导程蜗轮副分度、自动排屑装置等。最后完成机床机械结构设计,绘制了零件图用于生产。3.对机床的液压部分进行了设计。分析了机床的工况,根据机床实际的动作要求,合理选择了数控成形铣齿机的数控系统,设计了机床电路及电控柜,绘出了机床的电路原理图,实现工件的数控加工。4.装配出样机,完成了干式铣齿实验,检验了机床的性能、加工精度及效率。实验结果表明,该数控成形铣齿机能够满足干式铣齿要求,可使准双曲面齿轮大轮成形粗切效率提高5倍以上,具有高效率加工、操作简单、低价位等优点,达到了预定的设计要求。更多还原

【Abstract】 Hypoid gear is a critical part which is widely used in automobile chassis transmission. With the rapid develop of our country’s motor-dom, the demand of the hypoid gear multiplies. At the present, the gear milling machine which use damp processing is widely used in our country, but the cutting efficiency is low. So, it is necessry to develop a dry cutting milling machine, which is energy conservation and environment protection and will increase the efficiency and make processing easier.These contents have been discussed in this paper:1. Based on the principle and method of spiral bevel and hypoid gears generating, the mathematical model of cutting hypoid gear in the machine has been seted up. And the movement of processing parameters are solved. The principle of high speed dry-type cutting has been introduced. Then the mechanical structure designs of machine tool have been done,2. Designed the machine structure. According to the requirements of dry cutting to machine tools’performance, parts of machine optimization were improved. Such as the use of the whole bed, 8 speed tool box, variable lead worm gear indexing, automatic chip removal devices. At last machine mechanical structure design was completed, the parts diagram was drawed for the production.3. The hydraumatic part of the machine has been designed. The working condition of machine has been analysed, and according to the actual movement request of machine, the The numerical control of the machine has been chosen reasonably, then the machine tool circuit and the electricla cabinets have been designed, and the circuit schematics of machine have been draw to realize the semi-numerically processing of work piece.4. The prototype has been assembled, and the experiment has been done to inspect performance, machining accuracy and efficiency of the machine.The test proved that the NC milling machine can meet the needs of dry cutting, and the rough cut efficiency of the wheel hypoid gears increases 5 times, and the machine has more advantages, such as high strength, high efficiency, easy to operate and inexpensive, and so on.. The scheduled design requirements have been achieved.更多还原