The Experts below are selected from a list of 2397 Experts worldwide ranked by ideXlab platform
Chungshin Chang - One of the best experts on this subject based on the ideXlab platform.
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a study of the cutting temperatures in milling stainless steels using chamfered main cutting edge Nose Radius worn tools
Key Engineering Materials, 2014Co-Authors: Chungshin ChangAbstract:The main purpose of this paper is to study the carbide tip's surface temperature and the cutting forces of milling stainless steel with Nose Radius worn tools. A new cutting temperatures model incorporating tool worn factor and using the variations of shear and friction plane areas occurring in tool worn situations are presented in this paper. The frictional forces and heat generation on elementary cutting tools are calculated by using the measured cutting forces and the oblique cutting analysis. The tool tip and cutting edges are treated as a series of elementary cutting tips. The carbide tip’s temperature distribution is solved by finite element analysis (FEM) method. Keywords: Milling, stainless steel, cutting temperatures, Nose Radius tools, FEM
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a study of the cutting temperatures of turning stainless steels with chamfered main cutting edge Nose Radius worn tools
Advanced Materials Research, 2010Co-Authors: Chungshin ChangAbstract:To study the cutting forces and the carbide tip's surface temperatures of stainless steel (SUS 304) with a chamfered main cutting edge Nose Radius worn tools. A new cutting temperature model incorporating tool worn factor and using the variations of shear and friction plane areas occurring in tool worn situations are presented in this paper. The heat partition factor between the tip and chip is solved by using the inverse heat transfer analysis, which utilizes temperature on the carbide tip’s surface measured by infrared as the input. The tip’s carbide surface temperature is determined by finite element analysis (FEA) and compared with temperatures obtained from experimental measurements; good agreement demonstrates the proposed model.
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prediction of the cutting temperatures of turning stainless steel with chamfered cutting edge Nose Radius tools
2010Co-Authors: Chungshin ChangAbstract:Temperatures of the carbide tip’s surface, when turning stainless steel with a chamfered main cutting edge Nose Radius tool are investigated. The mounting of the carbide tip in the tool holder is ground to a Nose Radius as measured by a toolmaker microscope, and a new cutting temperature model developed from the variations in shear and friction plane areas occurring in tool Nose situations are presented in this paper. The frictional forces and heat generated in the basic cutting tools are calculated by using the measured cutting forces and the theoretical cutting analysis. The heat partition factor between the tip and chip is solved by the inverse heat transfer analysis, which utilizes the temperature on the P-type carbide tip’s surface measured by infrared as the input. The tip’s carbide surface temperature is determined by finite element analysis (FEA), and compared with temperatures obtained from experimental measurements. Good agreement demonstrates the accuracy of the proposed model.
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prediction of the cutting forces of stainless steel with Nose Radius worn tools
宜蘭技術學報, 2002Co-Authors: Chungshin ChangAbstract:To study the cutting forces, the carbide tip's surface temperature, the mechanism of secondary chip and main chip formation of turning stainless steel with a chamfered main cutting Nose Radius worn tooIs. A new force model incorporating tool worn factor and using the variations of shear plane areas occurring in tool worn situations are presented in this paper. The results show a good agreement between the predicted and measured forces.
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a force model for Nose Radius worn tools with a chamfered main cutting edge
International Journal of Machine Tools & Manufacture, 1998Co-Authors: Chungshin ChangAbstract:The three-dimensional cutting forces for Nose Radius tools with a chamfered main cutting edge incorporated with a tool-worn factor are presented in this paper. The variations in shear plane areas occurring in the tool-worn situation are used. The results obtained from the proposed model shows good agreement with the experimental data on both chip formation as well as cutting forces. In the experimental work the throwaway tips are locked onto the pocket of the tool holder. The holders for special tools are designed first. Next, the tool holders are manufactured by using medium carbon-steel bars and the mounting tips are designed based on various specifications. Finally, the Nose Radius tips mounting in the tool holder are ground to a wear depth, and the worn tool dimensions are measured by using a profile projector. The shear area and the friction area are calculated accordingly. Then the three-dimensional cutting forces will be obtained from those data.
Sanket N. Bhavsar - One of the best experts on this subject based on the ideXlab platform.
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effect of tool Nose Radius and machining parameters on cutting force cutting temperature and surface roughness an experimental study of ti 6al 4v eli
Materials Today: Proceedings, 2020Co-Authors: Darshit Shah, Sanket N. BhavsarAbstract:Abstract Ti-6Al-4V Extra Low Interstitial (ELI) possesses superior properties like higher strength to weigh ratio, better corrosion resistance, good fracture toughness etc., because of controlled interstitial element of iron and oxygen. The effects of four cutting parameters namely cutting speed, feed, depth of cut and tool Nose Radius on responses like cutting temperature, surface roughness and cutting force have been investigated for turning of Ti-6Al-4V (ELI). Total 81 experiments have been performed in dry environment. Mathematical models for cutting temperature, surface roughness and cutting force have been developed from experimental data using Response Surface Methodology. ANOVA test also has been carried out to evaluate contribution of parameters. The developed model is interfaced with Particle Swarm Optimization to minimize responses. The prediction of cutting force by PSO states that minimum cutting force of 7.419 kgf at cutting speed of 315 rpm, feed of 0.0510 mm/rev, depth of cut of 0.5mm and Nose Radius of 0.4mm. The prediction of surface roughness by PSO states that minimum surface roughness of 0.328µm at cutting speed of 140 rpm, feed of 0.0510 mm/rev, depth of cut of 0.7mm and Nose Radius of 1.2 mm. Also the minimum cutting temperature has been predicted by PSO as 31.96 0C at cutting speed of 140 rpm, feed of 0.0510 mm/rev, depth of cut of 1mm and Nose Radius of 0.8mm. The confirmation experiments have also been carried out which have measured minimum cutting force of 7 kgf, minimum surface roughness as 0.35µm and cutting temperature of 30 0C
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An experimental investigation of tool Nose Radius and machining parameters on TI-6AL-4V (ELI) using grey relational analysis, regression and ANN models
Growing Science, 2019Co-Authors: Darshit R. Shah, Sanket N. BhavsarAbstract:Ti-6Al-4V Extra Low Interstitial (ELI) exhibits superior properties because of controlled interstitial element of iron and oxygen. The effects of four cutting parameters namely cutting speed, feed, depth of cut and tool Nose Radius on responses like cutting force, average cutting temperature and surface roughness have been investigated for turning of Ti-6Al-4V (ELI). Total 81 experiments have been performed in dry environment. Grey Relational Analysis has been used for multi-objective optimization. Analysis of Variance test has been carried out to investigate contribution of input parameters. The model was found fit with R-Square value of 88.74%. Regression and ANN models are developed for prediction and compared. From the Grey relational analysis, it is clear that optimum parameters to minimize cutting force, cutting temperature and surface roughness while turning Ti-6Al-4V (ELI), are cutting speed as 140 rpm, Nose Radius 1.2mm, Feed 0.051mm/rev and depth of cut is 0.5mm. In comparison of regression model, the ANN model is found to be more accurate with average error of 3.57%
Manmohan Singh - One of the best experts on this subject based on the ideXlab platform.
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optimizing feed and radial forces in cnc machining of p 20 tool steel through taguchi s parameter design approach
Indian Journal of Engineering and Materials Sciences, 2009Co-Authors: Aman Aggarwal, Hari Singh, Pradeep Kumar, Manmohan SinghAbstract:The objective of the paper is to obtain an optimal setting of CNC machining process parameters (cutting speed, feed rate, depth of cut, Nose Radius and cutting environment) resulting in optimal values of the feed and radial forces while machining P-20 tool steel with TiN coated tungsten carbide inserts. The effects of the selected process parameters on the chosen characteristics and the subsequent optimal settings of the parameters have been accomplished using Taguchi’s parameter design approach. The analysis of the results shows that the optimal settings for low values of feed and radial forces are high cutting speed, low feed rate and depth of cut, small Nose Radius and cryogenic cutting environment.
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optimizing power consumption for cnc turned parts using response surface methodology and taguchi s technique a comparative analysis
Journal of Materials Processing Technology, 2008Co-Authors: Aman Aggarwal, Hari Singh, Pradeep Kumar, Manmohan SinghAbstract:Abstract This paper presents the findings of an experimental investigation into the effects of cutting speed, feed rate, depth of cut, Nose Radius and cutting environment in CNC turning of AISI P-20 tool steel. Design of experiment techniques, i.e. response surface methodology (RSM) and Taguchi's technique, have been used to accomplish the objective of the experimental study. L27 orthogonal array and face centered central composite design have been used for conducting the experiments. Taguchi's technique as well as 3D surface plots of RSM revealed that cryogenic environment is the most significant factor in minimizing power consumption followed by cutting speed and depth of cut. The effects of feed rate and Nose Radius were found to be insignificant compared to other factors. Though both the techniques predicted near similar results, RSM technique seems to have an edge over the Taguchi's technique.
Hari Singh - One of the best experts on this subject based on the ideXlab platform.
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taguchi fuzzy multi output optimization moo in high speed cnc turning of aisi p 20 tool steel
Expert Systems With Applications, 2011Co-Authors: Anil Gupta, Hari Singh, Ama AggarwalAbstract:Research highlights? The multi output high speed CNC turning of AISI P-20 tool steel is optimized using fuzzified Taguchi approach. ? In multi-response problem, all 4 responses tool life, power consumption, cutting force and surface roughness were simultaneously considered. ? It is concluded cutting speed (160m/min), Nose Radius (0.8mm), feed (0.1mm/rev) & depth of cut (0.2mm) yield ptimal result. ? Most significantly- cryogenic machining environment is favourable in increasing tool life and reducing surface roughness, cutting force and power consumption compared to wet coolant. This paper presents the application of Taguchi method with logical fuzzy reasoning for multiple output optimization of high speed CNC turning of AISI P-20 tool steel using TiN coated tungsten carbide coatings. The machining parameters (cutting speed, feed rate, depth of cut, Nose Radius and cutting environment) are optimized with considerations of the multiple performance measures (surface roughness, tool life, cutting force and power consumption). Taguchi's concepts of orthogonal arrays, signal to noise (S/N) ratio, ANOVA have been fuzzified to optimize the high speed CNC turning process parameters through a single comprehensive output measure (COM). The result analysis shows that cutting speed of 160m/min, Nose Radius of 0.8mm, feed of 0.1mm/rev, depth of cut of 0.2mm and the cryogenic environment are the most favorable cutting parameters for high speed CNC turning of AISI P-20 tool steel.
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optimizing feed and radial forces in cnc machining of p 20 tool steel through taguchi s parameter design approach
Indian Journal of Engineering and Materials Sciences, 2009Co-Authors: Aman Aggarwal, Hari Singh, Pradeep Kumar, Manmohan SinghAbstract:The objective of the paper is to obtain an optimal setting of CNC machining process parameters (cutting speed, feed rate, depth of cut, Nose Radius and cutting environment) resulting in optimal values of the feed and radial forces while machining P-20 tool steel with TiN coated tungsten carbide inserts. The effects of the selected process parameters on the chosen characteristics and the subsequent optimal settings of the parameters have been accomplished using Taguchi’s parameter design approach. The analysis of the results shows that the optimal settings for low values of feed and radial forces are high cutting speed, low feed rate and depth of cut, small Nose Radius and cryogenic cutting environment.
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optimizing power consumption for cnc turned parts using response surface methodology and taguchi s technique a comparative analysis
Journal of Materials Processing Technology, 2008Co-Authors: Aman Aggarwal, Hari Singh, Pradeep Kumar, Manmohan SinghAbstract:Abstract This paper presents the findings of an experimental investigation into the effects of cutting speed, feed rate, depth of cut, Nose Radius and cutting environment in CNC turning of AISI P-20 tool steel. Design of experiment techniques, i.e. response surface methodology (RSM) and Taguchi's technique, have been used to accomplish the objective of the experimental study. L27 orthogonal array and face centered central composite design have been used for conducting the experiments. Taguchi's technique as well as 3D surface plots of RSM revealed that cryogenic environment is the most significant factor in minimizing power consumption followed by cutting speed and depth of cut. The effects of feed rate and Nose Radius were found to be insignificant compared to other factors. Though both the techniques predicted near similar results, RSM technique seems to have an edge over the Taguchi's technique.
P. Mathew - One of the best experts on this subject based on the ideXlab platform.
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Nose Radius oblique tool cutting force and built up edge prediction
International Journal of Machine Tools & Manufacture, 1996Co-Authors: Joseph A. Arsecularatne, R F Fowle, P. MathewAbstract:A semi-empirical machining theory is described for predicting cutting forces and temperatures for oblique Nose Radius tools from cutting conditions and a knowledge of work material flow stress and thermal properties. By defining an equivalent cutting edge based on the chip flow direction, predictions are made for different cutting conditions and tool geometries (Nose radii and rake angles in particular). It is shown how the cutting conditions giving a built-up edge can be determined from the predicted temperatures. For finishing conditions a comparison between predicted and experimental results is made and this shows good agreement.
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Prediction of cutting forces and built-up edge formation conditions in machining with oblique Nose Radius tools
Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture, 1996Co-Authors: Joseph A. Arsecularatne, R F Fowle, J. W. Kim, S. J. Na, P. Mathew, P.l.b. OxleyAbstract:A semi-empirical machining theory is described for predicting cutting forces and temperatures for oblique Nose Radius tools from cutting conditions and a knowledge of work material flow stress and thermal properties. Predictions are made for a range of cutting speeds and tool geometries. It is shown how the cutting conditions giving a built-up edge can be determined from the predicted cutting temperatures. A comparison between predicted and experimental results shows good agreement.
