Mathematical Modeling of Thermofrictional Milling Process Using ANSYS WB Software

Abstract

This article presents ANSYS WB-based mathematical modelling of the thermofrictional milling process, which allowed studying the dynamics of thermal and physical processes occurring during the processing. The technique used also allows determination of the optimal cutting conditions of thermofrictional milling for processing various materials, in particular steel 40CN2MA, 30CGSA, 45, 3sp. In our study, from among a number of existing models of cutting fracture, we chose the criterion first proposed by prof. V. L. Kolmogorov. In order to increase the calculations performance, a mathematical model was proposed, that used only two objects: a parallelepiped-shaped workpiece and a cutting insert in the form of a pentagonal prism. In addition, the work takes into account the friction coefficient between a cutting insert and a workpiece taken equal to 0.4 mm. To determine the temperature in the subcontact layer of the workpiece, we introduced the coordinates of nine characteristic points with the same interval in the local coordinate system. As a result, the temperature values were obtained for different materials at the studied points during the cutter speed change. The research results showed the possibility of controlling thermal processes during processing by choosing the optimum cutting modes.

Research of ways of connecting reinforced bars in the production of reinforced concrete products

“…The above disadvantages that limit the use of the method do not allowconsidering friction welding as a universal technology. Currently, to eliminate the above-mentioned drawbacks of friction welding, research work is being conducted at "Technological Machines and Equipment, Mechanical Engineering and Standardization" department of Karaganda State Technical University (Kazakhstan) [7,8,9]. A new method of friction welding is being developed based on the mechanism of thermofriction processing methods [10,11], and a special device is being developed for joining wastes of homogeneous and in homogeneous, off-measurement rebars, rods and wires by friction welding [12,13,14].…”

Investigation Method of Thermal Friction Processing of the Eccentric Cone Crusher Part

“…The research of technological process restoration details of the eccentric cone crusher, made of steel 35L led to the creation new technologies restoration of worn surfaces including: restoration geometric sizes of weld eccentric outer cylindrical surface of the mechanized arc powder tape; termofikacine cuttinghardening treatment [13,14,15,16,17] the deposited surface of the eccentric. It is known that the process of traditional TFT of metals by cutting discs is a combined method using the thermal and mechanical action of the tool on the cut layer of the workpiece material [18,19,20,21].…”

Formation Management in Parts Processing Regenerated by Surfacing

“…The friction disc is heated and the reduced surface of the part is pre-treated, after which the final processing is performed by the cutting tool at high speeds. Also perspective is the combined processing methods based on the mechanism of cutting thermo-friction cutting at low speeds [6][7][8][9], such as multi-blade rotational turning [10,11], rotational-friction turning [12,13], thermos-friction milling and of the interval [14,15].…”