Improving the quality of crane wheels machining

International Conference on Mechanical Engineering, Automation and Control Systems 2018

Shubin, A.A.^1 ; Smolovik, A.E.^1 ; Vitchuk, N.A.^2

Kaluga Branch of Moscow State Technical University Named after N.E. Bauman, 5, Bazenov Street, Kaluga

248000, Russia^1

Kaluga State University Named after K.E. Tsiolkovski, 26, Stepan Razin Street, Kaluga

248023, Russia^2

关键词: Experimental determination;    Machining Process;    Natural thermocouple;    Optimal cutting;    Optimum temperature;    Running wheels;    Technological process;    Transport machines;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/560/1/012160/pdf
DOI  :  10.1088/1757-899X/560/1/012160

来源: IOP

【 摘 要 】

One of the most common types of damage to cranes is wear of the working surface and/or the ribs of the running wheel. When the maximum permissible wear is reached, the wheel is machined to restore its geometry. During production and repair of running wheels of load-lifting cranes, the problem of increasing the efficiency of the technological machining process on the rolling profile of the running wheels is a component of the general problem of increasing dependability of hoisting and transport machines. The technological process of restoring the profile of the surface of the crane wheels has a number of features. If the change in the depth of the cut can be estimated and then during processing to adjust the modes, then to measure and consider the hardness of the material to be removed are practically impossible. The lack of proper control over the change in the depth of the cut and the hardness of the treated surface often leads to the fact that the crane wheels turn in the understated modes, which adversely affects the performance. This causes the expediency of regulating the process according to such criterion as the optimal cutting temperature. The article describes the methods of experimental determination of the optimal cutting temperature. A new method of determination based on shear thermocouples is proposed. The authors obtained and compared dependences for thermo - EMF, corresponding to the optimum temperature, on the cutting speed, obtained with the help of shear and natural thermocouples.