Through the single row drilling experiment,this paper studied the regularity of the tooth shape parameter's influence to the disc teeth's rock-breaking effect,which provided some basis for the composite teeth ...Through the single row drilling experiment,this paper studied the regularity of the tooth shape parameter's influence to the disc teeth's rock-breaking effect,which provided some basis for the composite teeth type roller bit's combined experimental study and the structure design of the tooth type.This experimental research is only for the circular arc disc teeth which is arranged on the composite teeth type roller bit's main tooth.The experiments were designed using the method of orthogonal design and the results were analyzed by the fuzzy optimization method.The results show that the disc tooth's drilling effect is the best when the tip diameter is 2 mm,taper angle is 30and the groove number is 8,and the disc tooth's drilling effect is the second best when the tip diameter is 3 mm,taper angle is 30and the groove number is 7.The above two combined ways of drilling effect's difference is very small(the difference of the degree of the membership is 0.003).展开更多
基金The authors are grateful to Applied basic research project of Sichuan Province(No.2015JY0057)Natural science project of Sichuan Provincial Education Department(No.15ZA0046)for their financial support to carry out this research.The insightful and constructive comments of the anonymous reviewers are also gratefully acknowledged.
文摘Through the single row drilling experiment,this paper studied the regularity of the tooth shape parameter's influence to the disc teeth's rock-breaking effect,which provided some basis for the composite teeth type roller bit's combined experimental study and the structure design of the tooth type.This experimental research is only for the circular arc disc teeth which is arranged on the composite teeth type roller bit's main tooth.The experiments were designed using the method of orthogonal design and the results were analyzed by the fuzzy optimization method.The results show that the disc tooth's drilling effect is the best when the tip diameter is 2 mm,taper angle is 30and the groove number is 8,and the disc tooth's drilling effect is the second best when the tip diameter is 3 mm,taper angle is 30and the groove number is 7.The above two combined ways of drilling effect's difference is very small(the difference of the degree of the membership is 0.003).
