毕业设计--设计犁刀变速齿轮箱体零件的机械加工工艺规程

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1、犁刀变速齿轮箱体零件制订加工工艺路线部分 1 摘 要 随着中国农业的现代化进程，农机的发展已经成为农业发展的重中之重。犁刀齿轮 变速箱体是旋耕机上的犁刀变速齿轮箱体是旋耕机的一个主要工作零件。旋耕机通过该 零件的安装平面与手扶拖拉机变速箱的后部相连，用两圆柱销定位，四个螺栓固定，实 现旋耕机的正确联接。旋耕机是与拖拉机配套完成耕、耙作业的耕耘机械。因其具有碎 土能力强、耕后地表平坦等特点，而得到了广泛的应用。正确使用和调整旋耕机，对保 持其良好技术状态，确保耕作质量是很重要的。 该零件是整个犁刀齿轮变速箱的主体，承载了齿轮和轴高度运动，我们不仅仅需要 考虑箱体本身支撑的强度和保护作用，还要考虑

2、高速运转过程中产生的震动。 该课题解决了现实中的零件问题。并且为旋耕机的升级进步，发展创新提供了坚实 的基础。 关键词：旋耕机；高速运动；强度；震动 犁刀变速齿轮箱体零件制订加工工艺路线部分 2 Abstract With the modernization of Chinese agriculture, agricultural development has become a top priority for agricultural development. Coulter is a rotary tiller gear gearbox gear box on the coulter i

3、s a major work of rotary machine parts. Rotary parts of the installation through the plane and connected to the rear of tractor gearbox, with two cylindrical pin position, the four bolts to achieve the correct join Rotary. Rotary tillage is done with the tractor, rake the hard work of mechanical wor

4、k. Pulverizer capacity because of its strong, smooth surface characteristics after plowing, and has been widely used. Proper use and adjustment of rotary tiller, and keep it in good technical condition, to ensure that the quality is very important to farming. The parts are the main gear box the coul

5、ter, carrying a high degree of movement of the gear and shaft, we not only need to consider the cabinet itself, the strength of support and protection, but also consider high-speed operation of the vibration generated in the process. The subject in part to solve the real problem. Rotary machine for

6、the upgrade and improvement, development and innovation to provide a solid foundation Keywords：Rotary; high speed; strength; shock 犁刀变速齿轮箱体零件制订加工工艺路线部分 3 目 录 1 引言 4 1.1 课题背景 4 1.2 国内外相关问题研究现状 4 1.2.1 犁刀齿轮变速箱体零件的研究重点 4 1.2.2 发展现状及趋势 4 2.零件的分析 5 2.1 零件的作用 5 2.2 零件的工艺分析 5 3.确定毛坯、画毛坯-零件综合图 6 4.工艺规程设计 7 4.1 定位基准的选择 7 4.2 制订工艺路线 7 4.3 选择加工设备及刀、夹、量具 . 10 4.4 加工工序设计 . 11 4.4.1 工序 10 粗铣及工序 60 精铣 N 面工序 . 11 4.4.2 工序 20 钻扩铰 2-10F9 孔至 2-9F9，钻 4-13mm 孔 12 4.4.3 工序 50 粗镗、工序 90 精镗 2-80H7 孔工序 . 14