Research on the Cutting Characteristics of Cutters on Pre - cutting Machine with Different Cutters, Layouts
XIA Yi - min1，QIAN Cong1，TIAN Ze - yu2，CHEN Li2，TAN Qing1，ZOU Hai - yan2
(1. State Key Laboratory of High Performance Complex Manufacturing， Central South University， Changsha，Hunan 410083，China;2. China Railway Construction Heavy Industry Co. Ltd，Changsha，Hunan 410100，China)
Abstract：Research purposes ： In order to study the cutting characteristics of pre - cutting machine witli diferent layout of tlie cutters，the finite element software was used and the simulation model of cutters breaking the rock witli four kinds of cutters , layouts was established. The process of multi - cutters , breaking the rock with different layout of the cutters was simulated. The horizontal load and the specific energy of cutters , breaking rock were analysed. Research conclusions ：( 1 ) The vertical resistance of the cutter is much less than the horizontal resistance when the cutters break therock. (2) At t!ie penetration of 6 mm，among the four kinds of cutters , layout，the average horizontal load of the cutter in scheme a which is 485 N is the minimum and the average horizontal load of the cutter in scheme d which is 548 N is the maximum. (3 ) The average horzontal loads of t!ie cutters in scheme b are the most even and the average horzontal loads of t!ie cutters in scheme a and scheme d are more uneven. (4) Overall，at the penetration of 4 mm，6 mm and 8 mm，the specific energy in scheme a is the minimum and the specific energy in scheme b is the maximum. The viration lawbetween the specific energy and the penetration is not obvious. (5) On the whole，scheme a is the best. This scheme has been initially tested on the pre - cutting machine and the cutting peformance was good. (6 ) The research results can provide references for the study of tunnel pre - cutting machine cutters , layout.
夏毅敏1钱聪1田泽宇2陈力2谭青1邹海炎2. 预切槽设备切刀不同布置方式下切削特性研究[J]. 铁道工程学报, 2016, 33(5): 64-69.
XIA Yi - min1，QIAN Cong1，TIAN Ze - yu2，CHEN Li2，TAN Qing1，ZOU Hai - yan2. Research on the Cutting Characteristics of Cutters on Pre - cutting Machine with Different Cutters, Layouts. Journal of Railway Engineering Society, 2016, 33(5): 64-69.
2016, Vol. 33 
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