scholarly journals Optimization and Analysis of Cutting Tool Geometrical Parameters using Taguchi Method

2018 ◽  
Vol 22 (3) ◽  
pp. 346 ◽  
Author(s):  
DD Olodu
Keyword(s):  
Taguchi Method ◽  
Cutting Tool ◽  
Geometrical Parameters

Study on the Cutting Parameter Optimization of Medical Titanium Alloy Based on Tools Durability

2007 ◽  
Vol 24-25 ◽  
pp. 103-108
Author(s):  
Q.L. Du ◽  
X.H. Chen ◽  
Ke Hua Zhang
Keyword(s):  
Titanium Alloy ◽  
Parameter Optimization ◽  
Cutting Tool ◽  
Tool Material ◽  
Cutting Parameters ◽  
Online Optimization ◽  
Geometrical Parameters ◽  
Cutting Parameter Optimization ◽  
Optimization Of Cutting Parameters ◽  
Tool Durability

In this paper, based on analyzing the properties of medical Ti-6Al-4V Titanium alloy, the author takes the purpose of studying the machinability of the medical Ti-6Al-4V Titanium alloy and aims at improving the tool durability. The study starts from the tool material, geometrical parameters of the tools, usage for the cutting and other aspects in order to achieve the suitability of selecting cutting tool as well as the optimization of choosing cutting usage which lays the foundation for further investigation of the machinability of the medical Ti-6Al-4V Titanium alloy and carry out the online optimization of cutting parameters.

Applied Taguchi Method for Fatigue Testing of Customized Hip Implant

2016 ◽  
Vol 39 (12) ◽  
pp. 611-618
Author(s):  
Mangesh R. Dharme ◽  
Abhaykumar M. Kuthe ◽  
Tushar R. Deshmukh
Keyword(s):  
Taguchi Method ◽  
Safety Factor ◽  
Fatigue Testing ◽  
Geometrical Parameters ◽  
Hip Implants ◽  
Safety Factors ◽  
Element Analysis ◽  
Hip Implant ◽  
Neck Shaft Angle ◽  
Minimum Number

Purpose Human activities generate stresses, which vary with time and may result in fatigue failure of the customized hip implant. This study aims to investigate fatigue testing of customized hip implants using the minimum number of experiments by the Taguchi method, for 147 patients. This study was also useful to determine the influential geometrical parameters on the fatigue safety factor of customized hip implants. Methods Horizontal offset (HO), vertical offset (VO) and neck shaft angle (NSA) of the hip joint of 147 patients were measured on computed tomography (CT) scanned images. Stress and strain of hip implants were calculated by finite element analysis and validated by in vitro experimental tests. Fatigue safety factors were calculated by Goodman, Soderberg and Gerber's fatigue theories and maximum stresses. Results Analysis of variance results show that the highest impact on fatigue safety factors was equal to 54.38% for HO, 16.33% for VO, and was equal to 29.16% for NSA with reference to Goodman, Soderberg and Gerber's fatigue theories. The hip implant shape of experiment no. 8 has the highest safety factor value compared to all other hip implants. Conclusions The results show that HO has the maximum influence on fatigue safety factors. The determination of influential geometric parameters may be useful to redesign customized hip implants in order to achieve the highest fatigue safety factor. The Taguchi method is suitable for fatigue testing of custom hip implant with a minimum number of experiments.

scholarly journals Optimisation of Cutting Tool and Cutting Parameters in Face Milling of Custom 450 through the Taguchi Method

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Harun Gokce
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Tool Wear ◽  
Taguchi Method ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Tool Wear ◽  
Wide Range

Stainless steels with unique corrosion resistance are used in applications with a wide range of fields, especially in the medical, food, and chemical sectors, to maritime and nuclear power plants. The low heat conduction coefficient and the high mechanical properties make the workability of stainless steel materials difficult and cause these materials to be in the class of hard-to-process materials. In this study, suitable cutting tools and cutting parameters were determined by the Taguchi method taking surface roughness and cutting tool wear into milling of Custom 450 martensitic stainless steel. Four different carbide cutting tools, with 40, 80, 120, and 160 m/min cutting speeds and 0.05, 0.1, 0.15, and 0.2 mm/rev feed rates, were selected as cutting parameters for the experiments. Surface roughness values and cutting tool wear amount were determined as a result of the empirical studies. ANOVA was performed to determine the significance levels of the cutting parameters on the measured values. According to ANOVA, while the most effective cutting parameter on surface roughness was the feed rate (% 50.38), the cutting speed (% 81.15) for tool wear was calculated.

Design optimization of a fluidized bed with a novel air chamber using the CFD-Taguchi method

2021 ◽  
pp. 095440622110293
Author(s):  
Fei Wang ◽  
Hao Yan ◽  
Yishan Zeng ◽  
Wei Xu ◽  
Haozhou Zang ◽  
...  
Keyword(s):  
Taguchi Method ◽  
Fluidized Bed ◽  
Gas Flow ◽  
Interaction Mechanism ◽  
Splitter Plate ◽  
Geometrical Parameters ◽  
The Novel ◽  
Residual Rate ◽  
Air Chamber ◽  
Level 1

The gas–solid fluidized bed is the key structure of industrial fluidization, and it is widely used in fields such as chemical reactors and industrial material conveying. To study the uniformity of velocity distribution ( Vu) in a fluidized bed and clarify the interaction mechanism between the geometric structure of the air chamber and the gas flow, in this paper, 16 novel chamber structures for powder unloading were designed based on the Taguchi method. Computational fluid dynamics was used to simulate the different chamber schemes, and the effects of various geometric factors on the response were analyzed based on the Taguchi method. The effect of the novel optimization model for powder unloading was verified by tests. The results show that the optimal combination of geometrical parameters is air chamber capacity ( V) at level 4, separation ratio ( K) at level 1 and clearance of splitter plate ( δ) at level 1, and δ has the greatest effect on the Vu1 and Vu2 in the fluidized bed. With the increase in δ and K, the velocity of the airflow away from the inlet side increases, and the area of the vortex near the splitter plate increases. Compared with the baseline model, the fluidized bed with the novel air chamber can effectively reduce the residual rate of powder unloading.

Investigation of the Tooth Geometry of a Hob for Machining of Involute Gears (in the Tool-in-Use Reference System)

2007 ◽  
Vol 129 (4) ◽  
pp. 750-759 ◽  
Author(s):  
Stephen P. Radzevich
Keyword(s):  
Reference System ◽  
Cutting Tool ◽  
Cutting Edge ◽  
Geometrical Parameters ◽  
Penetration Curve ◽  
Edge Geometry ◽  
Tool Performance ◽  
Gear Hobbing ◽  
Involute Gears ◽  
Computer Codes

This paper is aiming at development of an analytical approach for computation of the geometrical parameters of cutting edges of an involute hob. It is well recognized that the involute hob geometry strongly affects the cutting tool performance, as well as the efficiency of gear hobbing operation. It is proven experimentally and by industrial practice that the optimal value of every geometrical parameter of the tool cutting edge exists and, thus, it can be found out. A method for computation of the cutting edge geometry is necessary for optimization of parameters of a gear hobbing operation. In this paper, an analytical method for the computation of the cutting edge geometry of a gear hob is reported. The method is based on wide application of elements of vector calculus and matrices. The analysis is performed in the tool-in-use reference system. An equation of the penetration curve is derived. The machining zone is partitioned onto several different sectors. The roughing sector and the generating sector are distinguished. Generating of the work-gear tooth profile occurs within the generating sector that is bounded by the penetration curve. The derived equations, as well as the worked-out computer codes are applicable for computation of the cutting edge geometry at any point of the cutting edge of the hob, and at a any instant of time. The equations and the computer codes enable one estimating the impact of (a) the hob diameter, (b) the hob number of starts, (c) the work-gear number of teeth, (d) the hob feed rate, and (e) the hob rotation onto the actual values of the geometrical parameters of the hob cutting edges. Numerical results of the investigation are computed using commercial software MATHCAD-SCIENTIFIC. The results of the computation of the cutting edge geometry of the involute hob enable the user (a) to avoid not-feasible values of any and all geometrical parameters of the cutting edge of the hob teeth, (b) to develop parameters of the hob grinding and reliving operations, which guaranteed the optimal values of any and all geometrical parameters of the hob cutting edges. Ultimately, the application of the hobs with optimal geometry of the cutting edges will result in an increase in the cutting tool performance and in the efficiency of the gear hobbing operation. The latter is of critical importance for high volute production of involute gears for the needs of the automotive industry. The reported research results are ready to be put into practice.

Experimental Investigations for Characterization and Analysis of Rake Face of the WC-Co Inserts Using Taguchi Method

2010 ◽  
Author(s):  
C. L. V. R. S. V. Prasad ◽  
S. V. Ramana ◽  
S. Srikiran ◽  
K. Ramji
Keyword(s):  
Taguchi Method ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Flow Patterns ◽  
System Level ◽  
Experimental Investigations ◽  
Work Piece ◽  
Rake Face ◽  
Experimental Conditions ◽  
Chip Flow

In order to improve the performance of the cutting tool, it is required to model the metal cutting process at the system level. To predict and enhance the cutting tool performance the primary requirement of the system is the efficiency of the model explaining the interactions at the tool chip interface. The predominating parameters which influence the development of the system are work piece material and machining variables or sometimes both. Further the development of low cost methodology to study the chip tool interactions with minimum amount of testing is of more importance. Major part of the work is emphasized on the investigation and characterization of various zones on the rake face of tungsten carbide inserts. Tests have been carried out by machining AISI 1040 steel using WC inserts with variable dry conditions examining the chip flow phenomenon on the rake face of considerable number of samples. Taguchi method is adopted for the design of experimental conditions. Results have shown an acceptable chip flow patterns and authors were able to quantify the wear zones on the rake face. The rake face is then characterized to represent all the possible cases of chip flow patterns, crater wear and chipping of the cutting edge. Side and end cutting edges are taken as datum lines for locating the wear zones. The quantification and locations of the wear zones might help the researchers and tool makers to concentrate more on the defined areas instead of the rake face in total.

Influence of cutting tool geometrical parameters on tool wear in high-speed milling of Inconel 718 curved surface

2017 ◽  
Vol 233 (1) ◽  
pp. 18-30 ◽  
Author(s):  
Jian-wei Ma ◽  
Zhen-yuan Jia ◽  
Guang-zhi He ◽  
Zhen Liu ◽  
Xiao-xuan Zhao ◽  
...  
Keyword(s):  
Tool Wear ◽  
Cutting Force ◽  
Tool Life ◽  
Inconel 718 ◽  
High Speed ◽  
Cutting Tool ◽  
Helix Angle ◽  
Curved Surface ◽  
Geometrical Parameters ◽  
High Speed Milling

High-speed machining provides an efficient approach for machining Inconel 718 with high quality and high efficiency. For high-speed milling of Inconel 718 curved surface, the geometrical characteristics are changing continuously leading to a sharp fluctuation of cutting force, which will aggravate the tool wear. As the wear mechanism of coated cutting tool is seriously affected by the cutting tool geometrical parameters, suitable geometrical parameters of cutting tool should be selected to avoid the cutting tool from being worn out very quickly. In this study, the influence of cutting tool geometrical parameters on tool wear in high-speed milling of Inconel 718 curved surface is investigated with coated cutting tool, and the cutting force in milling process is also analyzed. The results show that the cutting force variation can manifest the tool wear degree, and the failure type of coated cutting tool in plane milling and curved surface milling after the same cutting length is different. Furthermore, the cutting tool geometrical parameters seriously affect the tool wear and the tool life in high-speed milling of Inconel 718 curved surface. Concretely, the small rake angle has greater strength and has superiority, the relief angle increasing can enhance the tool life, and the tool life is decreased with the increasing of helix angle for the cutting tool, whose helix angle is larger than 30°. This study provides a theoretical basis for cutting tool wear mechanism and cutting tool geometrical parameter selection in high-speed milling of Inconel 718 curved surface, so as to guarantee the machining efficiency in high-speed milling of Inconel 718 curved surface.

An Efficient Approach for Performance Evaluation and Parameter Design of Heat Transfer Enhancing Structure

2010 ◽  
Author(s):  
Wen-Jing Zhou ◽  
Ju-Fang Fan ◽  
Zhi-Geng Wu ◽  
Ya-Ling He ◽  
Wen-Quan Tao
Keyword(s):  
Heat Transfer ◽  
Taguchi Method ◽  
Vortex Generator ◽  
Vortex Generators ◽  
Longitudinal Vortex ◽  
Parameter Design ◽  
Geometrical Parameters ◽  
Heat Transfer Area ◽  
Pumping Power ◽  
Transfer Enhancement

The effects of main geometrical parameters of the longitudinal vortex generator (LVG) called “common flow up” on heat transfer enhancement and pressure loss are numerically investigated. Taguchi method is used to guide the numerical simulations. Based on the results of the Taguchi method, a new fin with the combination of different vortex generators is proposed to substitute the original wavy fin-and-tube surface. The results show that the new fin with LVGs can save 9.08% of pumping power while reaching the same amount of heat transfer rate as the wavy fin at inlet velocity of 2m/s, and it can also save 33% of heat transfer area.

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