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Experimental study of the wear behaviour of a metal carbide tool in turning by dimensionless analysis

Amier F.D., Belarifi F., Noureddine R.

Archives of Materials Science and Engineering

2022

Vol. 114, nr 1

5--12

Purpose: In this article, we present the experimental results with a dimensionless analysis of the wear behavior of a metal carbide tool in a turning operation. Design/methodology/approach: The highlighting of the dimensional input and output parameters of the experimental tests to bring out the different adimensional parameters. Regarding the input parameters, we have the rotational velocity (N), the feed (f), the depth of cut (ap), the machining time (t). The output parameters are defined by the flow rate (DC), the volume of the used tip (VU), the face wear (VB), as well as the cutting power (PC) and that of the machine (PM). Findings: The dimensionless approach allowed us to find the desired cutting conditions as well as the possibility of working in ranges of cutting conditions for known wear, which is not possible with a dimensional analysis. It should be noted that the appropriate choice of these parameters was essential to achieve these results. Research limitations/implications: The existence of a working range proposed by this analysis leads us to the proposal of a model and a numerical optimization. Practical implications: This work offers the desired compromise of adequate cutting conditions during machining. Originality/value: Deduction of adequate cutting conditions with minimum wear. Among other things, we can extrapolate the results to offer us compromises in the choice of ranges of cutting conditions.

The reverse engineering to optimise the dimensional conical spur gear by CAD

Belarifi F., Bayraktar E., Benamar A.

Journal of Achievements in Materials and Manufacturing Engineering

2008

Vol. 31, nr 2

429-433

Purpose: This paper propose a method to optimise the module of cutting conical spur gear, after being worn or broken, with the aid of Computer-Aided Design (CAD). The suggested method allows determining the geometric features of a pair of conical spur gear after worn. Design/methodology/approach: The approach consists of drawing real tooth model, with dimensioning characteristics by CAD; extracting a database of tooth drawing that permits the determination of the real volume by mass destruction. It also allows creating a virtual model, by theoretical geometric characteristics, to calculate the volume. Findings: This approach allows giving an approximation of the conditions of the machine function. However, the optimisation of the module is only a link one chain, for other parameter influences on the good working of pairs; we could mention the condition of assembly and the tribological aspects. Practical implications: A simulation package, R2000, was used and an ''AutoCAD'' software has been developed to accomplish the drawing of 2D wheel conical spur gear, the verification of the system assembly and the drawing of a 3D volume pattern. Originality/value: The numerical program gives, solution of optimization problem which consist of searching an extreme by minimising a constrained, unstrained function f(x) such that Min f(x) = -Max f(x).