Manufacturing Technology Today

A. Manna ¹, Sandeep Salodkar ¹, Suprakash Patra ¹

Affiliations
1 Mechanical Engg. Deptt., Punjab Engineering College, (Deem University), Chandigarh-160012, IN

Abstract

The paper describes the procedure to obtain the machining conditions for turning operation considering unit cost of production as an objective function. The optimality conditions for single point cutting operations are determined based on the objective function using dynamic programming technique. The optimal policy of machining conditions are determined for evolution of minimum cost considering the important cost related machining criteria such as actual machining time, tool reuse time, set up time, tool life, and tool changing time. The mathematical models are also developed considering the Krononbergs data used for standard turning operation. The effects of different constraints on the objective functions are analyzed through various graphical representations. In this study, the Taguchi method, a powerful tool for experiment design is also used to optimize the cutting parameters to achieve better surface finish characteristics and to identify the most effective parameter for cost evolution during turning. The developed optimality condition affects the economics of machining conditions. The graphical representations also help to understand and analyze the effects of various input constraints at the optimum point and their significant Influences on production cost. The analysis can propose an effective methodology in advance for proper setting of machining parameters in practice, which may reduce the cost of unit production.

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A. Manna ¹, B. Bhattacharya ²

Affiliations
1 Mech. Engg. Deptt., Punjab Engineering College, Chandigarh-160012, IN
2 Production Engineering Department, Jadavpur University, Kolkata-700032, IN

Abstract

In this investigation, Taguchi method is used to optimize the CNC-Wire cut-EDM parameters for effective machining of Ai-SiC MMC. From experimental results and through analysis of variance (ANOVA) and 'F' test values the significant factors are determined for surface roughness. Mathematical model relating to the machining performance criteria e.g. surface finish is established using Gauss elimination method for effective machining of AI/SiC-MMC. Confirmation test results show that the developed mathematical model is appropriate for effective machining of AI/SiC-MMC and the determined optimal combination of CNC-Wire cut-EDM parameters can also satisfy the real requirement in practice.

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A. Manna ¹, B. Bhattacharya ²

Affiliations
1 Mech. Engg. Department, Punjab Engineering Coilege, Chandigarh -160012, IN
2 Production Engineering Department, Jadavpur University, Koikata-700032, IN

Abstract

In the experimental study, Taguchi method, a powerful tool in the design of experiment is used to optimize the parametric combination of CNC-Wire cut-EDM for effective machining of Al-SiC MMC. From experimental results and through analysis of variance (ANOVA) the significant factors are determined for favorable gap current (Ig). Mathematical model relating to the gap current is established using Gauss elimination method for effective machining of AI/SiC-MMC. Confirmation test results show that the developed mathematical model is appropriate for effective machining of AI/SiC-MMC and the determined optimal combination of CNC-Wire cut-EDM parameters can also satisfy the real requirement in practice.

Full Text

     

A. Manna ¹, B. Bhattacharyya ¹

Affiliations
1 Production Engineering Department, Jadavpur University, Koikata-700032, IN

Abstract

In the experimental study, Taguchi method, a powerful tool in the design of experiment, is used to optimize the CNC-Wire cut-EDM parameters for effective machining of Ai-SiC MMC. From experimental results and through analysis of variance (ANOVA) the significant factors are determined for metal removal rate. Mathematical model relating to the machining performance of WEDM is established using Gauss elimination method for effective machining of AI/SiC-MMC. Confirmation test results show that the developed mathematical model is appropriate for effective machining of Al/SiC MMC and the determined optimal combination of CNC-Wire cut-EDM parameters can also satisfy the real requirement in practice.

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