THE ANALYSIS OF EFFICIENCY OF PASSAGE OF SHOCK WAVES THROUGH THE CASE OF THE WORKING TOOL WITH A DIFFERENT TOOTH PROFILE
Description of computer program «Shock 2013» for the analysis of the effectiveness of shock waves through the body of the working tool with different profile of teeth. The work programme is based on the principle of Huygens, describing the law of reflection waves. The program allows to set a rational form and geometrical parameters of the tool. The algorithm of the program is based on the mathematical model of propagation of shock waves in the body of the working tool, created in Matlab. Mathematical model describes the process of propagation of a shock wave in a given section of the tool. When investigating the case of the worker tool tooth trapezoidal revealed that a decrease in the angle of inclination of the side surface of the tooth with 35° to 10° efficient completion of shock waves increases in 1,5 times. While the workflow is reduced tool wear resistance due to the stress concentration in the tooth in a zone of contact with the breed. It is recommended to use teeth trapezoidal with the angle of inclination of the side surface of no more than 15°-20°. The transmission coefficient of shock waves K tsw = 0,73-0,80. To increase the stability of impact tools, it is expedient to use the case with the teeth of circular profile. When using such a tool transmission coefficient of shock waves K tw = 0,61.