Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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CUTTING THE FROZEN SOIL-ICE MASS OF WEDGE CUTTER

Gorshkov A.S. 1 Kulepov V.F. 1 Shurashov A.D. 1 Nikandrov I.S. 1
1 Dzerzhinsky Polytechnic Institute of Nizhny Novgorod State Technical University. Dzerzhinsk
Experimentally determined the effect of cutting parameters on the resistivity of the mass of frozen sand and water mixture to the cutting wedge cutter. We studied the effect of the sharpening angle of the wedge cutter, bevel angle of the cutting edges of the cutter blades and cutting speed. Implemented a plan orthogonal central composite planning. An equation is obtained of the regression dependence of the resistance to cutting of operating factors. Are given the equation determining the energy consumption for cutting the frozen soil and ice mass. The maximum value of secondary resistance to cutting by increasing the angle of bevel of the cutting edge from 2.5 to 27.5 degrees decreased from 315 N/cm to 106 N/cm for angles of sharpening wedge cutter 35÷45 degrees and cutting speed 10÷12 m/s. The energy consumption for cutting frozen soil and ice mass when cleaning the surface of the pavement is 1.2 kW/m2. The optimal value for angle of sharpening cutter for milling cutter with diameter disk 800 mm is 35 ÷ 45 degrees, the bevel angle of cutting edge 15 ÷ 20 degrees and cutting speed of 10 ÷ 11 m/s.