菜单
  

    Connecting rod processing and trend of development  

    Connecting rod processing method  

    The connecting rod decomposes (also called connecting rod breaks) the technical principle uses the material break theory, first artificial has the whole forging connecting rod semi finished materials big end of hole the fissure, forms the initial break source, then expands with the specific method control fissure, achieved the connecting rod The decomposition processing process enable the decomposition the connecting rod cap, the pole adjoining plane to have the complete meshing jig-saw patterned structure, guaranteed the adjoining plane precise docking, tallies, does not need to carry on the adjoining plane again the processing, simultaneously simplified the connecting rod bolt hole structural design and the whole processing craft, has the processing working procedure few, the economical precision work equipment, the nodal wood energy conservation, the product quality high, the production cost low status merit. Main body and the connecting rod cap separate goal. 

    Trend of development  

    At present, the drop for and the die casting connecting rod host, the important status, are facing the powder to forge the steel connecting rod and a powder agglutination steel connecting rod forming craft challenge. Speaking of the domestic present situation, although the powder metallurgy forging industry had certain development, but must provide the mass and the high grade powder metallurgy forging is not mature. Moreover involves the equipment to renew, aspect expense questions and so on technical change, in next one, in long time, domestically produced connecting rod production also by drop forging craft primarily. 

    The connecting rod is one of internal combustion engine main spare parts, its reducing socket two sizes and the shape position errors have many requests, for example: Diameter, roundness, cylindricity, center distance, parallelism, hole and end surface verticality and so on. How does these erroneous project produce the scene in the workshop to examine, always is in the internal combustion engine profession a quite difficult question.  

    In the connecting rod production, domestic mainly has following several examination method at present: With the spindle survey, namely puts on the spindle in connecting rod two, with the aid of in V shape block, plate, dial guage survey. Because the spindle needs to load and unload, therefore between the hole axis has the gap, the measuring accuracy is very low.

     汽车发动机的六缸曲轴的加工工艺及夹具的设计

    1 曲轴加工的技术要求及发展方向1.1 曲轴加工的技术要求

    曲轴的技术要求是很高的,其机械加工工艺过程随生产纲领的不同和曲轴的复杂程度而有很大的区别,但一般均包括以下几个主要阶段论文网:定位基准的加工;粗、精车和粗磨各主颈及其它外圆;车连颈;钻油孔;精磨各主颈及其他外圆;精磨连颈;大、小头及键槽加工;轴颈表面处理;动平衡;超精加工各轴颈。

    可以看出,主颈或连颈的车削工序都与磨削工序分开,往往中间安排一些不同的加工面或不同性质的工序。粗加工后会发生变形,因此常把粗、精加工分开,并在切削力较大的工序后面安排校直工序,以保证加工精度。

  1. 上一篇:采暖空调英文文献和中文翻译
  2. 下一篇:刷镀机镀笔英文文献和中文翻译
  1. 汽车乘员舱的声振耦合英文文献和中文翻译

  2. 立体光照成型的注塑模具...

  3. 数控机床英文文献和中文翻译

  4. 工业机械手英文文献和中文翻译

  5. 低频振动的铁路车轴的状...

  6. 接头的形状对沥青塞接头...

  7. 数控加工技术英文文献和中文翻译

  8. 大众媒体对公共政策制定的影响

  9. 河岸冲刷和泥沙淤积的监测国内外研究现状

  10. 电站锅炉暖风器设计任务书

  11. 酸性水汽提装置总汽提塔设计+CAD图纸

  12. 当代大学生慈善意识研究+文献综述

  13. 十二层带中心支撑钢结构...

  14. 中考体育项目与体育教学合理结合的研究

  15. 杂拟谷盗体内共生菌沃尔...

  16. java+mysql车辆管理系统的设计+源代码

  17. 乳业同业并购式全产业链...

  

About

751论文网手机版...

主页:http://www.751com.cn

关闭返回