Simulation of machining of the working surface of wheel pairs on machine tools KZh20

• Main Author: V.M. Ruban
• Format: Article
• Language: English
• Published: Zhytomyr Polytechnic State University 2020-12-01
• Series: Технічна інженерія
• Subjects: restoration of working surfaces; wheel pairs; wheel-cutting machine kzh20; modeling of milling process; torque
• Online Access: http://ten.ztu.edu.ua/article/view/217525/217516

In mechanical engineering, there is a class of parts with a wheel pairs or with a curved working surface, such parts include wheel pairs of rail vehicles. During the operation of locomotives of main and industrial railway transport, it is periodically necessary to restore the worn-out profile of the wheels without dismantling the wheel pairs. The article analyzes and notes the need to improve the process of repairing of locomotive wheel pairs in. The efficiency and reliability of special shaped cutters and rail vehicles depends on the quality and accuracy of the repair process. The methodology is described for studying the dynamics of cutting processes on special machines KZh20, it is necessary to take into account not only the cutting forces, but also the structural properties of shaped cutters (tools), as well as the workpiece (working surface of wheelsets). Based on the mathematical model of process of restoration of working profile of tools of wheel-cutting machines KZh20 zones of stable parameters of milling process dynamics can be determined in conditions of simultaneous presence of two non-rigid elements (machined part and special shaped cutter). The method for determination of torque value taking into account transmission ratio of mechanical transmission is proposed.