Tool Temperatures in Interrupted Metal Cutting

Stephenson, David A.; Ali, Afifah Mohd

doi:10.1115/1.2899765

Cited by 124 publications

(34 citation statements)

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“…Therefore, the direct calculation of the entire temperature distribution only works under idealized conditions and assumptions. In addition, many models only resolve the temperature distribution in defined areas of the cutting zone like tool, workpiece or chip [13][14][15] and often require a heat source as input variable. "In summary, there is no general agreement on a partition criterion for the heat transfer into the tool, the chip, and the workpiece, in conventional machining.…”

Section: State Of the Art mentioning

confidence: 99%

Heat Flow into the Tool in Cutting Super Alloy Inconel 718

Augspurger¹,

Peng²,

Klocke³

et al. 2018

JMEA

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Cutting super alloy is a highly sensitive manufacturing process regarding the complex thermo-mechanical interactions in the cutting zone, which finally determine the capability of the process in order to reach economic requirements. The connection between the intensity of heat sources as well as heat partitions into the tool, work piece and chip is yet not fully understood. Thus heat flows and other thermal conditions in the cutting zone cannot be predicted satisfactory, though they influence the chip formation mechanics, the surface integrity, respectively functionality of the machined work piece as well as the tool wear and lifetime. Because of this deficit the ecological and economical design of the manufacturing process is still limited and often not knowledge based. The proposed paper presents a methodology in order to measure and predict heat flows respectively affiliated temperatures during cutting nickel-base super alloy (Inconel 718). The heat flows in the cutting zone are determined by infrared thermography and a further energy balance by post processing the thermal images. A FE-model for chip formation simulation, which is based on CEL (Coupled-Eulerian-Lagrange) formulation, was used to calculate the heat flows. Finally, the results of the simulation and the experiments were compared.

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Section: State Of the Art mentioning

confidence: 99%

Heat Flow into the Tool in Cutting Super Alloy Inconel 718

Augspurger¹,

Peng²,

Klocke³

et al. 2018

JMEA

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“…10). According to Stephenson et al [16], an end mill is modeled as a semi-infinite rectangular corner, x ≥ 0, y ≥ 0, z ≥ 0, heated by a heat flux as shown in Fig. 11.…”

Section: Temperature Distribution and Thermal Stressmentioning

confidence: 99%

Numerical Analyses to Investigate the Feasibility and Effectiveness in Using Heat Pipe Embedded End Mills

Liu

Zhu

Jen

et al. 2012

SV-JME

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In this paper, the feasibility and effectiveness of heat pipe cooling in end milling operations are investigated. A new embedded heat pipe technology was utilized to remove the heat generated at the tool-interface in end milling processes. Numerical studies involved four cases, including dry milling, fluid cooling, heat-pipe cooling and heat-pipe cooling with cutting fluid supplied. The thermal, structural static and dynamic characteristics of the end-mill were investigated using a numerical calculation with Fast Finite Element (FFE) plus solvers based on explicit finite element analysis software. The results demonstrate that the heat pipe end-mill is most feasible and effective in the actual end milling processes.

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“…Stephenson et al [16] found that 15% of the heat generated transferred into the cutting tool whereas the heat fraction value stated by Komanduri et al [4] was 10 %. Blok`s energy partition analysis [17] is often employed as the analytical model for thermal analyses of metal cutting operations.…”

Section: Introductionmentioning

confidence: 96%

Heat partition effect on cutting tool morphology in orthogonal metal cutting using finite element method

Yeşilkaya

Yaman

2019

mech

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It is widely accepted that heat partition and temperature distribution for metal cutting process have a significant effect on the morphological features of the cutting tool. Tool life and cutting accuracy are considerably affected by temperature distribution and heat transfer mechanisms on the tool. When a finite elements model is accurately generated, an understanding of heat partition into the cutting tool without performing experiments can be gained. This study has been completed with the use of uncoated and coated tools in order to predetermine heat partition value entering the cutting tool. In terms of coated tools, tool coating was investigated to assess its effects on heat partition. Finite Element Method was mainly used in combination with the previously generated experimental data in literature. Three-dimensional uncoated and coated models were created and made compatible with finite element modeling software to be able to perform thermal analyses of the cutting process. Finite element transient and steady-state temperature values were calculated and hence the heat intensity value for the cutting tool was determined.

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Tool Temperatures in Interrupted Metal Cutting

Cited by 124 publications

References 0 publications

Heat Flow into the Tool in Cutting Super Alloy Inconel 718

Heat Flow into the Tool in Cutting Super Alloy Inconel 718

Numerical Analyses to Investigate the Feasibility and Effectiveness in Using Heat Pipe Embedded End Mills

Heat partition effect on cutting tool morphology in orthogonal metal cutting using finite element method

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