The importance of diamond coated tools for agile manufacturing and dry machining

Shen, C. S.

doi:10.1016/s0257-8972(96)02969-6

Cited by 35 publications

(19 citation statements)

References 7 publications

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“…The high thermal conductivity of the PCD helps to absorb part of the energy to avoid triggering the chip oxidation. The PCD tool was known for machining of aluminum [19]. Therefore, comparing the cutting forces generated by PCD and PCBN tools, which have identical tool geometry, the PCD exhibits much lower forces for Al6061.…”

Section: Analytical Analysis Of Cutting Forces and Stressesmentioning

confidence: 99%

Chip formation, cutting forces, and tool wear in turning of Zr-based bulk metallic glass

Bakkal

Shih

Scattergood

2004

International Journal of Machine Tools and Manufacture

136

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Section: Analytical Analysis Of Cutting Forces and Stressesmentioning

confidence: 99%

Chip formation, cutting forces, and tool wear in turning of Zr-based bulk metallic glass

Bakkal

Shih

Scattergood

2004

International Journal of Machine Tools and Manufacture

136

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“…The most prohibitive part of switching towards dry machining is the initial capital expenditure associated with special expensive tooling, and nonretrofitting machines. Research on dry machining has been mainly concerned with the development of appropriate tools and coatings [12,26,[37][38][39][40][41]. Although dry machining is possible in some situations, there are still several issues regarding lubricity, tool life, thermal damage of the workpiece, etc.…”

Section: Introductionmentioning

confidence: 99%

A Computational Fluid Dynamics Analysis of Single and Three Nozzles Minimum Quantity Lubricant Flow for Milling

Najiha

Rahman

2014

Int. J. Automot. Mech. Eng.

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A 3-dimensional computational fluid dynamics analysis of minimum quantity lubricant flow for a four-tooth milling cutter operation with single and three nozzles is presented in this paper. CFD modelling is utilized to simulate the flow distribution around a fourtooth milling. The domain of a rotating cutter along with the spraying nozzle was defined. Operating cutting and boundary conditions were defined based on previous literature. A steady-state, pressure-based, planar analysis was performed with a viscous, realizable k-ε model. A 3-D transient-case, incompressible analysis for the minimum quantity lubricant is also performed. The domain of the milling cutter is rotated at a very high spindle speed, and a single nozzle is used to investigate the effects of MQL spray. A mixture of oils and air is sprayed onto the tool. Another analysis is performed with three nozzles placed at equal angles to each other around the periphery of the tool. A 2-dimensional steady-state analysis is also carried out using CFD. The obtained results verify that the single nozzle cannot fully lubricate the rotating tool. It was observed that flow penetration into the cutting zone is dependent on the flow velocity and the number of nozzles. Hence, it can be concluded that the MQL nozzle arrangement can be improved with three nozzles with a constant mass flow rate.

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“…Minimum Quantity Lubrication (MQL) is a sustainable manufacturing technique that is safe for the environment, the worker and is cost effective (Marksberrya & Jawahir, 2008;Shen, 1996). The minimization of metal working fluids is a direct indicator of sustainable manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Minimum Quantity Lubricant Flow Analysis in End Milling Processes: A Computational Fluid Dynamics Approach

Najiha

Rahman²,

Kamal³

et al. 2012

J MECH ENG SCI

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This paper presents a two-dimensional steady-state incompressible analysis for the minimum quantity of lubricant flow in milling operations using a computational fluid dynamics (CFD) approach. The analysis of flow and heat transfer in a four-teeth milling cutter operation was undertaken. The domain of the rotating cutter along with the spray nozzle is defined. Operating cutting and boundary conditions are taken from the literature. A steady-state, pressure-based, planar analysis was performed with a viscous, realizable k-ε model. A mixture of oils and air were sprayed on the tool, which is considered to be rotating and is at a temperature near the melting temperature of the workpiece. Flow fields are obtained from the study. The vector plot of the flow field shows that the flow is not evenly distributed over the cutter surface, as well as the uneven distribution of the lubricant in the direction of the cutter rotation. It can be seen that the cutting fluid has not completely penetrated the tool edges. The turbulence created by the cutter rotation in the proximity of the tool throws oil drops out of the cutting zone. The nozzle position in relation to the feed direction is very important in order to obtain the optimum effect of the MQL flow.

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The importance of diamond coated tools for agile manufacturing and dry machining

Cited by 35 publications

References 7 publications

Chip formation, cutting forces, and tool wear in turning of Zr-based bulk metallic glass

Chip formation, cutting forces, and tool wear in turning of Zr-based bulk metallic glass

A Computational Fluid Dynamics Analysis of Single and Three Nozzles Minimum Quantity Lubricant Flow for Milling

Minimum Quantity Lubricant Flow Analysis in End Milling Processes: A Computational Fluid Dynamics Approach

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