吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (06): 1541-1545.doi: 10.7964/jdxbgxb201306018

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Quantitative description and analysis of defect area of fracture surface of splitting connecting rod

KOU Shu-qing1, YANG Hong-yu1, GAO Yan1, YANG Shen-hua2   

  1. 1. Roll Forging Institute, Jilin University, Changchun 130022, China;
    2. Changchun JiYangHuaXin Technology Co.Ltd., Changchun 130103, China
  • Received:2012-10-15 Online:2013-11-01 Published:2013-11-01

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Abstract:

During the process of splitting connecting rod, the area defect of fracture surface often occurs due to particle shedding. The area defect dimension should be limited to ensure the quality of products. In this paper, the data information of connecting rod fracture surface was obtained and the three dimensional fracture surface was reconstructed based on reverse engineering idea. Then the morphology of the fracture surface was displayed using TIN method. Meanwhile, the defect area of fracture surface of connecting rod was quantitatively determined using triangular patch stitching and summation principles. Simulation results show that the area of con-rod joint surface obtained by splitting is 13.1% larger than that obtained by machining. Compared to empirical value, the particle shedding limit sizes of fracture surface has been substantially improved without reducing the bearing capacity and the use performance. This is quite significant to con-rod fracture splitting production.

Key words: machinery manufacturing processes and equipment, connecting rod, fracture splitting, fracture surface reconstruction, defect area

CLC Number: 

  • TH16

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