西南石油大学学报(自然科学版) ›› 1997, Vol. 19 ›› Issue (3): 70-72.DOI: 10.3863/j.issn.1000-2634.1997.03.013

• 石油机械工程 • Previous Articles     Next Articles

Optimizing Design of Essential Structural Parameters of Cone Bits

Wu Ze-bing Hou Ji-kang
  

  1. (Dept. of Mechanical Engineering, SWPI, Sichuan, 637001)
  • Received:1996-12-11 Revised:1900-01-01 Online:1997-08-20 Published:1997-08-20
  • Contact: Wu Ze-bing

Abstract: Based on the mechanism of interaction between the bit and rock, the concepts of plane model and spatial one are introduced. The plane model reflects the scraped area by teeth, while the spatial model reflects volume of broken rock by teeth. Two objective functions of optimization are built up and optimal computation to two kinds of bits (ZHP2b and ZHP3a) is carried out using multi-objective optimization method, considering the essential struc-
tural parameters as optimal parameters. The results show that the effectiveness on XHP2b is greater than that on XHP3a. The rate of penetration of optimal bits is increased by 10~20 percent.

Key words: Cone bits, Structure, Model, Optimizing design

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