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IJSRD - International Journal for Scientific Research & Development| Vol. 3, Issue 10, 2015 | ISSN (online): 2321-0613
All rights reserved by www.ijsrd.com 1037
Evaluation the Effect of Machining Parameters on Mrr of Mild Steel
Mr. Sandeep Boora1 Mr. Sandeep Kumar2
1
Student 2
H.O.D
1,2
Department of Mechanical Engineering
1,2
MIET, India
Abstract— Turning metal removal is the removal of metal
outside diameter of a rotating cylindrical workpiece. As it is
used to reduce the diameter. of the work piece generally to a
specified dimension and to produce a smooth finish on the
metal. Often, the work piece is turned so that the sections
have different diameters. As is the machining operation that
produces cylindrical. In its basic form, it can be defined as
an outer surface machining: Based on the findings of the
Pilot study, actual experimentation work will be designed
and input machining parameters and their values finalized.
The results are expected to show that the response variables
(output parameters) strongly influenced by the control
factors (input parameters). So, the results which are obtained
after experimentation analyzed and modeled for their
application in manufacturing industry It is concluded that
for MRR be maximum factor Cutting speed has to be at high
level 3, Feed has to be at high level & D.O.C has to be at
high level.
Key words: Taguchi Design, Orthogonal Array, Turning,
Cutting Speed, Feed
I. INTRODUCTION
Kohli and Dixit (2005) [1] proposed a method based on the
neural network with the acceleration of the radial vibration
of the tool holder as feedback. The backpropagation
algorithm is used to train the network model for predicting
the surface roughness in turning process. The methodology
was validated for turning dry and wet steel using high speed
steel and carbide tool and noted that the proposed
methodology was able to make an accurate prediction of
surface roughness using small formation of size and testing
data sets. Pal and Chakraborty (2005) [2] studied to develop
a model of neural network back-propagation for prediction
of surface roughness in turning operation and is used mild
steel work pieces with high speed steel as the cutting tool to
carry out a number of experiments. The authors used speed,
feed, depth of cut and cutting forces as inputs to the neural
network model for prediction of surface roughness. The
work resulted in the intended surface roughness was very
close to the experimental value.Sing and Kumar (2006) [3]
studied the optimization of the feed force through optimum
adjustment of process parameters namely speed, feed and
depth of cut in steel processing with carbide inserts EN24
TiC coated tungsten. The authors used the approach Taguchi
design parameters and concluded that the effect of feed and
cutting depth variation in feed force affected more as
compared to the speed. Ahmed (2006) [4] developed the
methodology for obtaining the optimum process parameters
for prediction of surface roughness in turning Al. To
develop the empirical model nonlinear regression analysis
with logarithmic transformation of data it was applied. The
model developed showed little mistakes and satisfactory
results. The study concluded that low feed rate was good to
produce low surface roughness and high speed couldproduce
high surface quality within the experimental domain. Abburi
and Dixit (2006) [5] they developed based on knowledge for
predicting surface roughness in turning process system.
Fuzzy set theory and neural networks were used for this
purpose. The authors developed rule to predict the surface
roughness for the process variables as well as for the
prediction of process variables for a given surface
roughness. Zhong et al. (2006) [6] predicted the surface
roughness of machined surfaces using nets with seven
innings namely degree insertion tool, workpiece materials,
cutting edge radius, angle, depth of cut, spindle speed and
feed rate . Kumanan et al. (2006) [7] proposed a
methodology for predicting the machining forces using
multilayer perceptron trained by genetic algorithm (GA).
The data obtained from experimental results of a turning
process is explored to train artificial neural networks
proposed (RNAs) with three inputs for output machining
forces. ANN optimal weights were obtained using GA
search. This hybrid function replacing made of GA and
ANN found computationally efficient and accurate to
predict the forces of machining for the machining conditions
of entry. Mahmoud and Abdelkarim (2006) [8] studied in
turning operation using high speed steel (HSS) cutting tool
450 at an angle of approach. This tool proved he could carry
out the cutting operation at higher speeds and longer service
life of the traditional tool with a rake angle of 90 degrees.
The study ultimately determines the optimum cutting speed
for high production speed and minimum cost and tool,
production time and operating costs. Doniavi et al. (2007)
[9] using the response surface methodology (RSM) in order
to develop the empirical model for the prediction of surface
roughness, in deciding the optimal cutting condition in the
transformation. The authors showed that the feed rate
significantly influenced surface roughness. With increased
surface roughness speed power was found to be increased.
With the increase in the cutting speed decreased surface
roughness. Analysis of variance showed that the influence of
the feed rate and were in surface roughness of the cutting
depth was applied. Kassab and Khoshnaw (2007) [10]
examined the correlation between surface roughness and
vibration cutting tool for turning operations. The process
parameters were cutting speed, depth of cut, feed rate and
outstanding tool. The experiments were carried out on the
lathe turning using dry (without cutting fluid) operation of
medium carbon steel with different levels of process
parameters mentioned above. Turning was dry useful for a
good correlation between the surface roughness and the
cutting tool vibration due clean environment. The authors
developed a good correlation between the vibration cutting
tool surface roughness and to control the surface finish of
the workpieces during mass production. The study
concluded that it was observed that the surface roughness of
the workpiece to be affected more by the acceleration
cutting tool; acceleration increased overhang of the cutting
tool. The surface roughness was found to increase with
increasing feed rate. Al-Ahmari (2007) [11] developed
Evaluation the Effect of Machining Parameters on Mrr of Mild Steel
(IJSRD/Vol. 3/Issue 10/2015/238)
All rights reserved by www.ijsrd.com 1038
empirical models for the tool life, surface roughness and
cutting force for turning operation. The process parameters
were used in the study speed, feed, depth of cut and the nose
radius to develop the model machining. The methods used
to develop 48 models mentioned above were Response
Surface Methodology (RSM) and neural networks (NN).
Thamizhmanii et al. (2007) [12] applied the Taguchi method
to find the optimal value of the roughness of the surface
under optimal cutting conditions in turning SCM 440 alloy
steel. The experiment was designed using the Taguchi
method and experiments were carried out and the results
thereof were analyzed with the help of ANOVA (analysis of
variance). The causes of poor surface finish as vibrations
were detected machine tool, tool chatter whose effects were
ignored for analysis. The authors concluded that the results
obtained by this method would be useful for other research
study similar type of tool vibrations, forces, etc. The study
concluded that cutting deppth was the only major factor that
contributed to the roughness of the cutting surface.
Natarajan et al. (2007) [13] introduced the technique of
monitoring tool wear online processing operation. Spindle
speed, feed, cutting depth, cutting force, power spindle
motor and temperature were selected as the input parameters
for the monitoring technique. To determine the degree of
wear of the tool; Two methods of Hidden Markov Model
(HMM) method such as bar-graph and multiple modeling
methods were used. An algorithm of decision fusion center
(DFCA) was used to increase the reliability of this output
that combines the outputs of the individual methods to make
a comprehensive decision on the wear of the tool. Finally,
all the proposed methods were combined in a DFCA to
determine the wear of the tool during turning operations.
Ozel et al. (2007) [14] conducted the finish turning of steels
AISI D2 (60 HRC) using ceramic (multi-radio) design
inserts cleaner surface finish and tool flank wear research.
For prediction of surface roughness and tool flank wear
multiple linear regression models and neural network
models were developed. Predictions based neural network of
surface roughness and tool flank wear were carried out in
comparison with a non-formation experimental data and the
results thereof showed that neural network models proposed
were efficient for predicting patterns tool wear and surface
roughness for a range of cutting conditions. The study
concluded that the best tool life was obtained in lower feed
rate and the lowest shear rate combination. Wang Lan
(2008) [15] using orthogonal array of Taguchi method gray
relational analysis with considering four parameters viz.
speed, depth, rate of cutting tool nose to drain, etc., for the
optimization of three responses: surface roughness, the tool
wear and material removal rate on the accuracy of light a
ECOCA-3807 CNC lathe. It explored the MINITAB
software to analyze the average signal-to-noise (S / N) effect
to achieve the multi-purpose features. This study not only
suggests an optimization approaches using orthogonal
matrix and gray relational analysis, but also contributed a
satisfactory technique to improve performance of multiple
precision machining CNC turning, with profound insight.
Srikanth and Kamala (2008) [16] evaluated the optimal
values of cutting parameters using a genetic algorithm coded
Real (RCGA) and various issues RCGA and its advantages
over the current approach of Binary Coded Genetic
Algorithm explained ( BCGA). They concluded that RCGA
was reliable and accurate to solve the optimization
parameter and build cutting optimization problem with
multiple decision variables. These decision variables were
cutting speed, feed, depth of cut and nose radius. The
authors noted that the fastest solution RCGA can be
obtained with relatively high success rate, with selected
machining conditions providing for overall improvement
mode product quality by reducing the cost of production,
reduction in time production, flexibility in the selection of
machining parameters. Sahoo et al. (2008) [17] studied for
optimization of machining parameters combinations
emphasis on fractal characteristics of surface profile
generated in CNC turning operation. The authors used the
L27 orthogonal array design with machining Taguchi
parameters: speed, feed and depth of cut in three different
work piece materials viz. aluminum, mild steel and brass. It
was concluded that the feed rate was more significant
influence surface finish on the three materials. It was
observed that in the case of mild steel and aluminum feed
showed some influences, whereas in the case of brass
cutting depth was noticed impose some influence on the
surface finish. The interaction factor was responsible for
controlling the fractal dimensions of the surface profile
produced in CNC turning.
II. DESIGN OF EXPERIMENTS
Engineering methods, the quality of Dr. Taguchi hired to
design experiments (DOE) is a statistical tool, the most
important of TQM for the design of high quality at lower
prices Taguchi Method provides an effective method and a
system for optimizing the design for. Performance, quality
and cost. The basic design stage trials traditionally are too
complex and not easy to use. Many of the trials have to be
carried out on a number of process parameters added. To
solve this problem Taguchi method uses a special design of
the array to study the parameter space that only a small
number of trials. Taguchi is the developer of how Taguchi
Method was widely used in engineering analysis and
includes a plan of experiments with the aim of getting
information in a controlled and to obtain information about
the circumstances. of assignment process The greatest
advantage of the method is to save the efforts in conducting
trials. So you reduce the time trials as well as the costs by a
factor quickly.
A. Process Variables and their Limits
First pilot experiments were done on the work piece using
random values and then from those pilot experiments the
suitable values of these parameters were selected. On the
basis of observations from the pilot experiments these levels
were found suitable for the experimentation.
Factors Units
Level-
1
Level-
2
Level-
3
Spindle Speed
(N)
RPM 220 330 440
Feed (F) Mm/Rev. 0.2 0.3 0.4
Depth Of Cut
(DOC)
Mm 0.5 1 1.5
Table 1: Process variables and their limits.
B. L9 Orthogonal Array
Run C.S Feed D.O.C
Evaluation the Effect of Machining Parameters on Mrr of Mild Steel
(IJSRD/Vol. 3/Issue 10/2015/238)
All rights reserved by www.ijsrd.com 1039
1 440 0.4 0.5
2 440 0.3 1
3 440 0.2 1.5
4 330 0.4 1
5 330 0.3 1.5
6 330 0.2 0.5
7 220 0.4 1.5
8 220 0.3 0.5
9 220 0.2 1
Table 2: Taguchi’s L9 Orthogonal Array.
C. Material Removal Rate Measurement
Material removal rate (MRR) has been calculated from the
difference of weight of work piece before and after
experiment.
D. Measurement of MRR
C.S Feed D.O.C Time Initial Wt. Final Wt. Reduction in Wt. (Wi- Wf)/ρst in mm3
/ sec
440 0.4 0.5 11.16 282.5 276.86 5.64 65.63
440 0.3 1 16.13 288.51 278.26 10.25 82.53
440 0.2 1.5 23.8 288.8 264.44 24.36 132.93
330 0.4 1 16.59 285.88 277.6 8.28 64.82
330 0.3 1.5 23.87 279.96 265.2 14.76 80.31
330 0.2 0.5 32.4 285.52 272.66 12.86 51.55
220 0.4 1.5 24.67 284.96 268.65 16.31 85.86
220 0.3 0.5 31.19 284.74 279.49 5.25 21.86
220 0.2 1 44.65 281.59 280.3 1.29 3.75
Table 3: Measurement of MRR
E. Response Table for Means
Response Table for Means
Level C.S Feed D.O.C
1 37.16 62.74 46.35
2 65.56 61.56 50.37
3 93.70 72.10 99.70
Delta 56.54 10.54 53.35
Rank 1 3 2
Table 4: Response Table for Means
Fig. 1: Shows the effect of different parameters on MRR.
III. ANALYSIS
A. Analysis of Variance for Means
Source DF SeqSS Adj SS
Adj
MS
F P
C.S 2 4794.8 4794.8
2397
.4
4.39
0.1
85
Feed 2 200.1 200.1
100.
1
0.18
0.8
45
D.O.C 2 5296.0 5296.0
2648
.0
4.85
0.1
71
Residual
Error
2 1091.4 1091.4
545.
7
Total 8 11382.3
Table 5: Analysis of Variance for Means
IV. CONCLUSION
It is concluded that for MRR be maximum factor Cutting
speed has to be at high level 3, Feed has to be at high level 3
& D.O.C has to be at high level 3. As shown in table below.
Physical Optimal Combination
Requirements C.S F D.O.C
Maximum MRR
440 0.4 1.5
Level-3 Level-3 Level-3
Table 5.1: Optimal combination for MRR
REFERENCES
[1] Kohli A. & Dixit U. S., (2005),”A neural-network-
based methodology for the prediction of surface
roughness in a turning process”, International Journal of
Advanced Manufacturing Technology, Volume 25,
pp..118–129.
[2] Pal S. K. & Chakraborty D., (2005), “Surface roughness
prediction in turning using artificial neural network”,
Neural Computing & Application, Volume14, pp. 319–
324.
[3] Singh H. & Kumar P., (2006), “Optimizing Feed Force
for Turned Parts through the Taguchi Technique”,
Sadhana, Volume 31, Number 6, pp.. 671–681. 58
[4] Ahmed S. G., (2006), “Development of a Prediction
Model for Surface Roughness in Finish Turning of
Aluminium”, Sudan Engineering Society Journal,
Volume 52, Number 45, pp.. 1-5.
[5] Abburi N. R. & Dixit U. S., (2006), “A knowledge-
based system for the prediction of surface roughness in
turning process” Robotics & Computer-Integrated
Manufacturing, Volume 22, pp.. 363–372.
[6] Zhong Z. W., Khoo L. P. & Han S. T., (2006),
“Prediction of surface roughness of turned surfaces
using neural networks”, International Journal of
Advance Manufacturing Technology, Volume 28, pp..
688–693.
[7] Kumanan S., Saheb S. K. N. & Jesuthanam C. P.,
(2006), “Prediction of Machining Forces using Neural
Evaluation the Effect of Machining Parameters on Mrr of Mild Steel
(IJSRD/Vol. 3/Issue 10/2015/238)
All rights reserved by www.ijsrd.com 1040
Networks Trained by a Genetic Algorithm”, Institution
of Engineers (India) Journal, Volume 87, pp.. 11-15.
[8] Mahmoud E. A. E. & Abdelkarim H. A., (2006),
“Optimum Cutting Parameters in Turning Operations
using HSS Cutting Tool with 450 Approach Angle”,
Sudan Engineering Scoeiety Journal, Volume 53,
Number 48, pp.. 25-30.
[9] Doniavi A., Esk&erzade M. & Tahmsebian M., (2007),
“Empirical Modeling of Surface Roughness in Turning
Process of 1060 steel using Factorial Design
Methodology”, Journal of Applied Sciences, Volume 7,
Number17, pp.. 2509-2513.
[10]Kassab S. Y. & Khoshnaw Y. K., (2007), “The Effect
of Cutting Tool Vibration on Surface Roughness of
Work piece in Dry Turning Operation”, Engineering &
Technology, Volume 25, Number 7, pp.. 879-889.
[11]Al-Ahmari A. M. A., (2007),”Predictive machinability
models for a selected hard material in turning
operations”, Journal of Materials Processing
Technology, Volume 59 190, pp.. 305–311.
[12]Thamizhmanii S., Saparudin S. & Hasan S., (2007),
“Analysis of Surface Roughness by Using Taguchi
Method”, Achievements in Materials & Manufacturing
Engineering, Volume 20, Issue 1-2, pp.. 503-505.
[13]Natarajan U., Arun P., Periasamy V. M., (2007), “On-
line Tool Wear Monitoring in Turning by Hidden
Markov Model (HMM)” Institution of Engineers (India)
Journal (PR), Volume 87, pp.. 31-35.
[14]Özel T. & Karpat Y., (2005), “Predictive modeling of
surface roughness & tool wear in hard turning using
regression & neural networks”, International Journal of
Machine Tools & Manufacture, Volume 45, pp.. 467–
479.
[15]Wang M. Y. & Lan T. S., (2008), “Parametric
Optimization on Multi-Objective Precision Turning
Using Grey Relational Analysis”. Information
Technology Journal, Volume 7, pp..1072-1076.
[16]Srikanth T. & Kamala V., (2008), “A Real Coded
Genetic Algorithm for Optimization of Cutting
Parameters in Turning IJCSNS”, International Journal
of Computer Science & Network Security, Volume 8
Number 6, pp.. 189-193.
[17]Sahoo P., Barman T. K. & Routara B. C., (2008),
“Taguchi based practical dimension modeling &
optimization in CNC turning”, Advance in Production
pp..60.

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Evaluation the Effect of Machining Parameters on MRR of Mild Steel

  • 1. IJSRD - International Journal for Scientific Research & Development| Vol. 3, Issue 10, 2015 | ISSN (online): 2321-0613 All rights reserved by www.ijsrd.com 1037 Evaluation the Effect of Machining Parameters on Mrr of Mild Steel Mr. Sandeep Boora1 Mr. Sandeep Kumar2 1 Student 2 H.O.D 1,2 Department of Mechanical Engineering 1,2 MIET, India Abstract— Turning metal removal is the removal of metal outside diameter of a rotating cylindrical workpiece. As it is used to reduce the diameter. of the work piece generally to a specified dimension and to produce a smooth finish on the metal. Often, the work piece is turned so that the sections have different diameters. As is the machining operation that produces cylindrical. In its basic form, it can be defined as an outer surface machining: Based on the findings of the Pilot study, actual experimentation work will be designed and input machining parameters and their values finalized. The results are expected to show that the response variables (output parameters) strongly influenced by the control factors (input parameters). So, the results which are obtained after experimentation analyzed and modeled for their application in manufacturing industry It is concluded that for MRR be maximum factor Cutting speed has to be at high level 3, Feed has to be at high level & D.O.C has to be at high level. Key words: Taguchi Design, Orthogonal Array, Turning, Cutting Speed, Feed I. INTRODUCTION Kohli and Dixit (2005) [1] proposed a method based on the neural network with the acceleration of the radial vibration of the tool holder as feedback. The backpropagation algorithm is used to train the network model for predicting the surface roughness in turning process. The methodology was validated for turning dry and wet steel using high speed steel and carbide tool and noted that the proposed methodology was able to make an accurate prediction of surface roughness using small formation of size and testing data sets. Pal and Chakraborty (2005) [2] studied to develop a model of neural network back-propagation for prediction of surface roughness in turning operation and is used mild steel work pieces with high speed steel as the cutting tool to carry out a number of experiments. The authors used speed, feed, depth of cut and cutting forces as inputs to the neural network model for prediction of surface roughness. The work resulted in the intended surface roughness was very close to the experimental value.Sing and Kumar (2006) [3] studied the optimization of the feed force through optimum adjustment of process parameters namely speed, feed and depth of cut in steel processing with carbide inserts EN24 TiC coated tungsten. The authors used the approach Taguchi design parameters and concluded that the effect of feed and cutting depth variation in feed force affected more as compared to the speed. Ahmed (2006) [4] developed the methodology for obtaining the optimum process parameters for prediction of surface roughness in turning Al. To develop the empirical model nonlinear regression analysis with logarithmic transformation of data it was applied. The model developed showed little mistakes and satisfactory results. The study concluded that low feed rate was good to produce low surface roughness and high speed couldproduce high surface quality within the experimental domain. Abburi and Dixit (2006) [5] they developed based on knowledge for predicting surface roughness in turning process system. Fuzzy set theory and neural networks were used for this purpose. The authors developed rule to predict the surface roughness for the process variables as well as for the prediction of process variables for a given surface roughness. Zhong et al. (2006) [6] predicted the surface roughness of machined surfaces using nets with seven innings namely degree insertion tool, workpiece materials, cutting edge radius, angle, depth of cut, spindle speed and feed rate . Kumanan et al. (2006) [7] proposed a methodology for predicting the machining forces using multilayer perceptron trained by genetic algorithm (GA). The data obtained from experimental results of a turning process is explored to train artificial neural networks proposed (RNAs) with three inputs for output machining forces. ANN optimal weights were obtained using GA search. This hybrid function replacing made of GA and ANN found computationally efficient and accurate to predict the forces of machining for the machining conditions of entry. Mahmoud and Abdelkarim (2006) [8] studied in turning operation using high speed steel (HSS) cutting tool 450 at an angle of approach. This tool proved he could carry out the cutting operation at higher speeds and longer service life of the traditional tool with a rake angle of 90 degrees. The study ultimately determines the optimum cutting speed for high production speed and minimum cost and tool, production time and operating costs. Doniavi et al. (2007) [9] using the response surface methodology (RSM) in order to develop the empirical model for the prediction of surface roughness, in deciding the optimal cutting condition in the transformation. The authors showed that the feed rate significantly influenced surface roughness. With increased surface roughness speed power was found to be increased. With the increase in the cutting speed decreased surface roughness. Analysis of variance showed that the influence of the feed rate and were in surface roughness of the cutting depth was applied. Kassab and Khoshnaw (2007) [10] examined the correlation between surface roughness and vibration cutting tool for turning operations. The process parameters were cutting speed, depth of cut, feed rate and outstanding tool. The experiments were carried out on the lathe turning using dry (without cutting fluid) operation of medium carbon steel with different levels of process parameters mentioned above. Turning was dry useful for a good correlation between the surface roughness and the cutting tool vibration due clean environment. The authors developed a good correlation between the vibration cutting tool surface roughness and to control the surface finish of the workpieces during mass production. The study concluded that it was observed that the surface roughness of the workpiece to be affected more by the acceleration cutting tool; acceleration increased overhang of the cutting tool. The surface roughness was found to increase with increasing feed rate. Al-Ahmari (2007) [11] developed
  • 2. Evaluation the Effect of Machining Parameters on Mrr of Mild Steel (IJSRD/Vol. 3/Issue 10/2015/238) All rights reserved by www.ijsrd.com 1038 empirical models for the tool life, surface roughness and cutting force for turning operation. The process parameters were used in the study speed, feed, depth of cut and the nose radius to develop the model machining. The methods used to develop 48 models mentioned above were Response Surface Methodology (RSM) and neural networks (NN). Thamizhmanii et al. (2007) [12] applied the Taguchi method to find the optimal value of the roughness of the surface under optimal cutting conditions in turning SCM 440 alloy steel. The experiment was designed using the Taguchi method and experiments were carried out and the results thereof were analyzed with the help of ANOVA (analysis of variance). The causes of poor surface finish as vibrations were detected machine tool, tool chatter whose effects were ignored for analysis. The authors concluded that the results obtained by this method would be useful for other research study similar type of tool vibrations, forces, etc. The study concluded that cutting deppth was the only major factor that contributed to the roughness of the cutting surface. Natarajan et al. (2007) [13] introduced the technique of monitoring tool wear online processing operation. Spindle speed, feed, cutting depth, cutting force, power spindle motor and temperature were selected as the input parameters for the monitoring technique. To determine the degree of wear of the tool; Two methods of Hidden Markov Model (HMM) method such as bar-graph and multiple modeling methods were used. An algorithm of decision fusion center (DFCA) was used to increase the reliability of this output that combines the outputs of the individual methods to make a comprehensive decision on the wear of the tool. Finally, all the proposed methods were combined in a DFCA to determine the wear of the tool during turning operations. Ozel et al. (2007) [14] conducted the finish turning of steels AISI D2 (60 HRC) using ceramic (multi-radio) design inserts cleaner surface finish and tool flank wear research. For prediction of surface roughness and tool flank wear multiple linear regression models and neural network models were developed. Predictions based neural network of surface roughness and tool flank wear were carried out in comparison with a non-formation experimental data and the results thereof showed that neural network models proposed were efficient for predicting patterns tool wear and surface roughness for a range of cutting conditions. The study concluded that the best tool life was obtained in lower feed rate and the lowest shear rate combination. Wang Lan (2008) [15] using orthogonal array of Taguchi method gray relational analysis with considering four parameters viz. speed, depth, rate of cutting tool nose to drain, etc., for the optimization of three responses: surface roughness, the tool wear and material removal rate on the accuracy of light a ECOCA-3807 CNC lathe. It explored the MINITAB software to analyze the average signal-to-noise (S / N) effect to achieve the multi-purpose features. This study not only suggests an optimization approaches using orthogonal matrix and gray relational analysis, but also contributed a satisfactory technique to improve performance of multiple precision machining CNC turning, with profound insight. Srikanth and Kamala (2008) [16] evaluated the optimal values of cutting parameters using a genetic algorithm coded Real (RCGA) and various issues RCGA and its advantages over the current approach of Binary Coded Genetic Algorithm explained ( BCGA). They concluded that RCGA was reliable and accurate to solve the optimization parameter and build cutting optimization problem with multiple decision variables. These decision variables were cutting speed, feed, depth of cut and nose radius. The authors noted that the fastest solution RCGA can be obtained with relatively high success rate, with selected machining conditions providing for overall improvement mode product quality by reducing the cost of production, reduction in time production, flexibility in the selection of machining parameters. Sahoo et al. (2008) [17] studied for optimization of machining parameters combinations emphasis on fractal characteristics of surface profile generated in CNC turning operation. The authors used the L27 orthogonal array design with machining Taguchi parameters: speed, feed and depth of cut in three different work piece materials viz. aluminum, mild steel and brass. It was concluded that the feed rate was more significant influence surface finish on the three materials. It was observed that in the case of mild steel and aluminum feed showed some influences, whereas in the case of brass cutting depth was noticed impose some influence on the surface finish. The interaction factor was responsible for controlling the fractal dimensions of the surface profile produced in CNC turning. II. DESIGN OF EXPERIMENTS Engineering methods, the quality of Dr. Taguchi hired to design experiments (DOE) is a statistical tool, the most important of TQM for the design of high quality at lower prices Taguchi Method provides an effective method and a system for optimizing the design for. Performance, quality and cost. The basic design stage trials traditionally are too complex and not easy to use. Many of the trials have to be carried out on a number of process parameters added. To solve this problem Taguchi method uses a special design of the array to study the parameter space that only a small number of trials. Taguchi is the developer of how Taguchi Method was widely used in engineering analysis and includes a plan of experiments with the aim of getting information in a controlled and to obtain information about the circumstances. of assignment process The greatest advantage of the method is to save the efforts in conducting trials. So you reduce the time trials as well as the costs by a factor quickly. A. Process Variables and their Limits First pilot experiments were done on the work piece using random values and then from those pilot experiments the suitable values of these parameters were selected. On the basis of observations from the pilot experiments these levels were found suitable for the experimentation. Factors Units Level- 1 Level- 2 Level- 3 Spindle Speed (N) RPM 220 330 440 Feed (F) Mm/Rev. 0.2 0.3 0.4 Depth Of Cut (DOC) Mm 0.5 1 1.5 Table 1: Process variables and their limits. B. L9 Orthogonal Array Run C.S Feed D.O.C
  • 3. Evaluation the Effect of Machining Parameters on Mrr of Mild Steel (IJSRD/Vol. 3/Issue 10/2015/238) All rights reserved by www.ijsrd.com 1039 1 440 0.4 0.5 2 440 0.3 1 3 440 0.2 1.5 4 330 0.4 1 5 330 0.3 1.5 6 330 0.2 0.5 7 220 0.4 1.5 8 220 0.3 0.5 9 220 0.2 1 Table 2: Taguchi’s L9 Orthogonal Array. C. Material Removal Rate Measurement Material removal rate (MRR) has been calculated from the difference of weight of work piece before and after experiment. D. Measurement of MRR C.S Feed D.O.C Time Initial Wt. Final Wt. Reduction in Wt. (Wi- Wf)/ρst in mm3 / sec 440 0.4 0.5 11.16 282.5 276.86 5.64 65.63 440 0.3 1 16.13 288.51 278.26 10.25 82.53 440 0.2 1.5 23.8 288.8 264.44 24.36 132.93 330 0.4 1 16.59 285.88 277.6 8.28 64.82 330 0.3 1.5 23.87 279.96 265.2 14.76 80.31 330 0.2 0.5 32.4 285.52 272.66 12.86 51.55 220 0.4 1.5 24.67 284.96 268.65 16.31 85.86 220 0.3 0.5 31.19 284.74 279.49 5.25 21.86 220 0.2 1 44.65 281.59 280.3 1.29 3.75 Table 3: Measurement of MRR E. Response Table for Means Response Table for Means Level C.S Feed D.O.C 1 37.16 62.74 46.35 2 65.56 61.56 50.37 3 93.70 72.10 99.70 Delta 56.54 10.54 53.35 Rank 1 3 2 Table 4: Response Table for Means Fig. 1: Shows the effect of different parameters on MRR. III. ANALYSIS A. Analysis of Variance for Means Source DF SeqSS Adj SS Adj MS F P C.S 2 4794.8 4794.8 2397 .4 4.39 0.1 85 Feed 2 200.1 200.1 100. 1 0.18 0.8 45 D.O.C 2 5296.0 5296.0 2648 .0 4.85 0.1 71 Residual Error 2 1091.4 1091.4 545. 7 Total 8 11382.3 Table 5: Analysis of Variance for Means IV. CONCLUSION It is concluded that for MRR be maximum factor Cutting speed has to be at high level 3, Feed has to be at high level 3 & D.O.C has to be at high level 3. As shown in table below. Physical Optimal Combination Requirements C.S F D.O.C Maximum MRR 440 0.4 1.5 Level-3 Level-3 Level-3 Table 5.1: Optimal combination for MRR REFERENCES [1] Kohli A. & Dixit U. S., (2005),”A neural-network- based methodology for the prediction of surface roughness in a turning process”, International Journal of Advanced Manufacturing Technology, Volume 25, pp..118–129. [2] Pal S. K. & Chakraborty D., (2005), “Surface roughness prediction in turning using artificial neural network”, Neural Computing & Application, Volume14, pp. 319– 324. [3] Singh H. & Kumar P., (2006), “Optimizing Feed Force for Turned Parts through the Taguchi Technique”, Sadhana, Volume 31, Number 6, pp.. 671–681. 58 [4] Ahmed S. G., (2006), “Development of a Prediction Model for Surface Roughness in Finish Turning of Aluminium”, Sudan Engineering Society Journal, Volume 52, Number 45, pp.. 1-5. [5] Abburi N. R. & Dixit U. S., (2006), “A knowledge- based system for the prediction of surface roughness in turning process” Robotics & Computer-Integrated Manufacturing, Volume 22, pp.. 363–372. [6] Zhong Z. W., Khoo L. P. & Han S. T., (2006), “Prediction of surface roughness of turned surfaces using neural networks”, International Journal of Advance Manufacturing Technology, Volume 28, pp.. 688–693. [7] Kumanan S., Saheb S. K. N. & Jesuthanam C. P., (2006), “Prediction of Machining Forces using Neural
  • 4. Evaluation the Effect of Machining Parameters on Mrr of Mild Steel (IJSRD/Vol. 3/Issue 10/2015/238) All rights reserved by www.ijsrd.com 1040 Networks Trained by a Genetic Algorithm”, Institution of Engineers (India) Journal, Volume 87, pp.. 11-15. [8] Mahmoud E. A. E. & Abdelkarim H. A., (2006), “Optimum Cutting Parameters in Turning Operations using HSS Cutting Tool with 450 Approach Angle”, Sudan Engineering Scoeiety Journal, Volume 53, Number 48, pp.. 25-30. [9] Doniavi A., Esk&erzade M. & Tahmsebian M., (2007), “Empirical Modeling of Surface Roughness in Turning Process of 1060 steel using Factorial Design Methodology”, Journal of Applied Sciences, Volume 7, Number17, pp.. 2509-2513. [10]Kassab S. Y. & Khoshnaw Y. K., (2007), “The Effect of Cutting Tool Vibration on Surface Roughness of Work piece in Dry Turning Operation”, Engineering & Technology, Volume 25, Number 7, pp.. 879-889. [11]Al-Ahmari A. M. A., (2007),”Predictive machinability models for a selected hard material in turning operations”, Journal of Materials Processing Technology, Volume 59 190, pp.. 305–311. [12]Thamizhmanii S., Saparudin S. & Hasan S., (2007), “Analysis of Surface Roughness by Using Taguchi Method”, Achievements in Materials & Manufacturing Engineering, Volume 20, Issue 1-2, pp.. 503-505. [13]Natarajan U., Arun P., Periasamy V. M., (2007), “On- line Tool Wear Monitoring in Turning by Hidden Markov Model (HMM)” Institution of Engineers (India) Journal (PR), Volume 87, pp.. 31-35. [14]Özel T. & Karpat Y., (2005), “Predictive modeling of surface roughness & tool wear in hard turning using regression & neural networks”, International Journal of Machine Tools & Manufacture, Volume 45, pp.. 467– 479. [15]Wang M. Y. & Lan T. S., (2008), “Parametric Optimization on Multi-Objective Precision Turning Using Grey Relational Analysis”. Information Technology Journal, Volume 7, pp..1072-1076. [16]Srikanth T. & Kamala V., (2008), “A Real Coded Genetic Algorithm for Optimization of Cutting Parameters in Turning IJCSNS”, International Journal of Computer Science & Network Security, Volume 8 Number 6, pp.. 189-193. [17]Sahoo P., Barman T. K. & Routara B. C., (2008), “Taguchi based practical dimension modeling & optimization in CNC turning”, Advance in Production pp..60.