International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 05 | May 2024
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p-ISSN: 2395-0072
OPTIMIZATION OF PROCESS PARAMETERS IN CNC TURNING BY COATED & UNCOATED CUTTING TOOL INSERT Geeta1, Mukesh Kumar2, Kakali Deka3 1First Asst. Prof., Department of Mechanical Engineering PKG Group of Institutions.
2Second M.Tech Student, Department of Mechanical Engineering PKG Group of Institutions. 3Third: M.tech, Design Engineer, Noida Up ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - The present work deals with comparative study
Table -1: Chemical Composition C20 Plain carbon steel
on cutting performance of (BUSH P-780308A) made up of C-20 plain carbon steel using HSS, TiN Coated HSS cutting tool. The experimented optimal setting ensured minimization of surface roughness, and maximization of MRR (Material Removal Rate). Regression equations, used to get the relation between different response variables (MRR and surface finish) and the input parameters (speed, feed, and depth of cut) were found out using software for statistical analysis. In addition to it, the significance of the model is also analyzed graphically with the diagnostic graphs like Actual v/s Predicted result. Further the individual and combined effects of factors at various levels on the chosen response are discussed with the help of Interaction plots, Perturbation plots and ANOVA technique.
Mechanical Properties of C20 Plain carbon steel Property
Value
Carbon (C)
0.15-0.25
Manganese (Mn)
0.60-0.90
Silicon (Si)
0.15-0.35
Phosphorus (P)
0.0-0.06
Table -2: Mechanical Properties of C20 Plain carbon steel Mechanical Properties of C20 Plain carbon steel
Key Words: Cutting parameters, Surface roughness,
Property
Value
Tensile Strength
425 MPa
1.INTRODUCTION
Density
7.8 g/cm3
Quality and productivity play significant role in today’s competitive manufacturing market. For consumer viewpoint quality is very important.Therefore, every manufacturing or production unit always concerned about the quality of the product. Every manufacturing industry aims at producing many products within relatively lesser time. But it is felt that reduction in manufacturing time may cause severe quality loss. To embrace these two conflicting criteria, it is necessary to balance the quality level & productivity level of the item. Wherever metal is used its sure that it must have reached its final stage through processing with machine tools. In terms of annual expenditure, machining is the most important of the manufacturing processes.
Elongation
0.15%
Machinability
65%
Optimize machining time and Material removal rate.
2.2. Cutting Inserts The cutting tool used for experimentation with the standard specification is TiN Coated HSS. Table -3: Cutting Tool Detail. Single Point Cutting Tool
2. MATERIALS AND METHOD 2.1. Work Piece Material
Material
HSS, TiN Coated HSS
Type
Rhombus 80°,12mm side,4mm thickness
No. of edge
4
Coated HSS tools have shown better performance when compared to the uncoated carbide tools.
The work piece material used for present work was C20 plain Carbo steel. Table 1 and Table 2 show the chemical composition and mechanical properties of C20 plain Carbo steel.
2.3. 1 Selection of Control Factors Modeling and analysis were done by 3k factorial design is the most widely used factorial design having three levels for each of ‘k’ factors. The three levels of factors are referred to as low
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