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鉴于牙轮钻头约有60～80％是由于轴承的先期损坏而报废,因此,本文以钻头轴承为研究对象,在室内试验和分析钻头破坏机理及工作特性的基础上,引入灵敏度方法进行分析,并建立了数学模型及整套设计程序。同时,对SCDD数学优化方法进行了研究和改进。经示例验算,该法具有足够的计算可靠性和较快的收敛速度。本文提出的优化设计方法和程序,经过典型的试验验证及实际应用,获得了满意的效果。
In view of the fact that about 60-80% of roller cone bits are discarded due to the premature failure of the bearing, this paper takes the bit bearing as the research object, and based on the laboratory test and analysis of the bit failure mechanism and working characteristics, introduces the sensitivity analysis method, And established a mathematical model and the entire design process. At the same time, the mathematical optimization methods of SCDD are studied and improved. By way of example checking, this method has enough computational reliability and fast convergence speed. The optimization design method and program proposed in this paper have obtained satisfactory results through typical experimental verification and practical application.