Review on Optimization Techniques used for Determining Machining Conditions to get Effective Tool Life and Surface Finish

Kumar, Satish

doi:10.2507/daaam.scibook.2017.19

Cited by 4 publications

(3 citation statements)

References 16 publications

(16 reference statements)

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“…Reducing costs is a priority objective of any industrial company. [3], [4] Students will learn the real consequences of cutting speed on the wear of the cutting insert. They will also master the basics of the Keyence VHX-6000 microscope.…”

Section: Short-term Cutting Testmentioning

confidence: 99%

The Course ‘Practice of Experimental Methods in Machining’

Kaufnerová¹,

Kutlwašer²

2019

DAAAM Proceedings

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This article is about the course 'Practice of experimental methods in machining'. This subject is taught at the Faculty of Mechanical Engineering of the University of West Bohemia, specifically at the Department of Machining. The main part of the article briefly describes the individual experiments and measuring devices used in the experiments. Furthermore, these experiments are described from the perspective of their contribution to students and the preparation of students for real industry. The last part of the article deals with the extension of practical teaching of the subject 'Practice of experimental methods in machining' by measuring self-excited oscillation.

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Section: Short-term Cutting Testmentioning

confidence: 99%

The Course ‘Practice of Experimental Methods in Machining’

Kaufnerová¹,

Kutlwašer²

2019

DAAAM Proceedings

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“…Later an analysis of variance (ANOVA) was conducted for these results to find significant main factor or interactions at a confidence level of 95% (Montgomery, 2012). The regression models based on the response surface can provide a good fit for variables in manufacturing environments (Simunovic et al, 2013) and it is an optimisation technique identified by Kumar (2017); in order to know the precision of the fit, the coefficients R 2 (coefficient of determination) and R 2 -adj (adjusted coefficient of determination) are calculated. Higher values of theses coefficients indicate an acceptable fit (Montgomery, 2012).…”

Section: Statistical Proceduresmentioning

confidence: 99%

Effect of Cooling on the Torque of Tapping Processes in Polymer Composites

Domingo¹,

Agustina²,

Marín³

2018

DAAAM International Scientific Book

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The tapping process in polymer composites has been analysed; threaded holes have been formed in reinforced polyamide with glass fibre, PA66-GF30, with a tap of 15º as taper angle and titanium nitride, TiN, as coating. These tests have been carried out under different environmental temperatures by means of compressed cooling air through vortex tube. The cutting speeds reached values of 15, 37.5 and 60 m/min and environmental temperatures values of -18, 2 and 22 ºC. After an experimental data collection and a statistical analysis focussed on an analysis of variance and a response surface to create a second-order regression model, some interesting results are obtained. The lower torque can be found at temperatures close to 3 ºC and at high cutting speeds in the range studied, although the significant factor is the temperature; the cutting speed has a low influence. Therefore, the cooling has been an adequate procedure to reduce the torques.

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“…The academic literature shows that the surface quality affect to efficiency and sustainability because can determine the number of operations required; for this reason the roughness is a very studied variable, in particular its predictions through of the knowledge of some variables as chip size (Zuperl & Cus, 2015) or the influence of cutting parameters on different operations as milling (Qehaja et al, 2016) or drilling [Domingo et al, 2013). The tool life affects to surface quality (Kumar, 2017), therefore it is other element to consider, and moreover affect clearly to sustainability due to the material wear and to the machining time due to tool change; it is clear that to higher tool wear, the change time will higher.…”

Section: Introductionmentioning

confidence: 99%

A Sustainability Index for the Evaluation of Machining Operations

Toledano¹,

Domingo²

2018

DAAAM International Scientific Book

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The manufacturing plants have carried out efforts towards a greater environmental commitment. Many variables involve in the manufacturing processes, as the machining, and for this reason to know the contribution of these variables can contribute to get better practices. The present work exposes an index of integrated sustainability for the evaluation of the machining operations, in particular in the drilling. This index considers energy aspects of the process, as well as the surface quality of the part and the life of the cutting tool, and allow the optimization through of an interaction algorithm, based on the process cut-off parameters. The theoretical development has been contrasted with experimental data. The cutting parameters obtained from the sustainability index, does not correspond to the most economic option or the fastest, but allows that all the variables of the study simultaneously (roughness, time, cost, tool life and energy) obtain a better commitment.

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Review on Optimization Techniques used for Determining Machining Conditions to get Effective Tool Life and Surface Finish

Cited by 4 publications

References 16 publications

The Course ‘Practice of Experimental Methods in Machining’

The Course ‘Practice of Experimental Methods in Machining’

Effect of Cooling on the Torque of Tapping Processes in Polymer Composites

A Sustainability Index for the Evaluation of Machining Operations

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