Assessing Machinability from Fundamental Work Material Properties

Hastings, W. F.; Oxley, P.L.B.; Stevenson, M.G.

doi:10.1007/978-1-349-01397-5_62

Cited by 5 publications

(3 citation statements)

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“…Generally, tool-wear mechanisms observed in machining Ni and Ti based alloys are diffusion [28,29], adhesion [29, 30] and abrasion [29] for carbide cutting tools. Moreover, the most dominant wear mechanism at low cutting speeds/ temperatures is abrasion, adhesion at medium speeds/temperatures and finally diffusion at high cutting speeds/temperatures according to reported literature [31,32]. Figure 5 shows abrasion wear mechanism of the nose region of the cutting tool at 20 m min −1 cutting speed.…”

Section: Tool Wearmentioning

confidence: 80%

Machinability of Ni-rich NiTiHf high temperature shape memory alloy

Kirmacioglu¹,

Kaynak²,

Benafan³

2019

Smart Mater. Struct.

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Machining of Ni-rich Ni 50.3 Ti 29.7 Hf 20 (at%) high temperature shape memory alloys was evaluated under flood cooling conditions. Effects of various cutting speeds (between 20 and 120 m min −1 ), depth of cuts (between 0.4 and 1 mm), and the associated cutting forces on the work-piece surface quality and tool wear of this alloy are presented. Experimental data demonstrates that abrasion and adhesion were the predominant wear mechanisms leading to extreme wear in a short machining time. Thermal softening mechanism dominated the trend of cutting forces until 95 m min −1 cutting speed. Beyond this speed, force components sharply increased resulting from extreme tool wear. Chip breakability of this alloy is much better when compared to NiTi shape memory alloy.

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Section: Tool Wearmentioning

confidence: 80%

Machinability of Ni-rich NiTiHf high temperature shape memory alloy

Kirmacioglu¹,

Kaynak²,

Benafan³

2019

Smart Mater. Struct.

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“…One of the goals of the present research is to analyze the effects of cutting vibration on the roughness of the finished surface of the workpiece. The vibration in the z direction has much less effect on the surface result in comparison with that in the x 2 y plane when the speed of the cutting tool in the z direction is very slow (Hastings et al, 1971). The cutting vibration in the z direction is therefore ignored.…”

Section: Cutting System Modelingmentioning

confidence: 99%

“…Using a theoretical approach, this model established a foundation for modern studies on the cutting process and interactions between the workpiece and cutting tool. Many similar research studies, using experimental (Hastings et al, 1971) or theoretical (Bailey, 1975) approaches, can be found in the literature. Figures 6-12 appear in color online: http://jvc.sagepub.com 558 L. DAI and J. WANG In recent years, study of the mechanisms of the cutting process has concentrated more on the nonlinear dynamic response of the cutting system and the variation in cutting coefficients during the cutting process.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Workpiece Deflection and Motor Features on Quality of Machining Process — Nonlinear Vibrations Analysis

Dai

Wang

2007

Journal of Vibration and Control

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The present research aims at the establishment of a novel methodology to analyze the responses of a nonlinear machining system subjected to cutting forces excitations. For a systematic analysis, a nonlinear dynamic cutting system is developed that includes the main factors affecting vibration in machining. A new cutting vibration model is established to reflect the realistic vibrations of both the workpiece and the cutting tool of a lathe-type machining system. Vibrations of the workpiece and the cutting tool in a turning system are investigated on the basis of a coupled cutting vibration system established in the research. The effects of the workpiece deflection on the vibration of the machining system are considered. Moreover, the influences of nonlinear electrical features of the machining system's drive motor on the cutting vibration response are also considered in quantifying the nonlinear cutting force and the relative displacements between the workpiece and cutting tool. A set of numerical investigations of the behavior of the nonlinear cutting system is also carried out with implementation of the proposed model.

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