A study for determining the most significant parameters of the ball-burnishing process over some roughness parameters of planar surfaces carried out on CNC milling machine

Ball burnishing process often applies for obtaining specifically characteristics in the surface layer of the functional surfaces of the machine parts. Using CNC machines for carrying out this process significantly increases the possibility of control the characteristics of the toolpath of the ball tool and thus to produce regularly distributed roughness with specific size and direction of cells alignment. The current study presents obtained results from L8 Taguchi experimental design for determining the significantly influenced parameters of the ball burnishing process carried out on CNC milling machine on the size and arrangement direction of the cells form regular distributed roughness on planar surfaces.

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Research on the variability of the burnishing force during processing surfaces with 3D shape by using simultaneous 5-axis ball-burnishing process implemented on CNC milling machine

ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA BULGARIA ◽

10.29114/ajtuv.vol1.iss1.20 ◽

2017 ◽

Vol 1 (1) ◽

pp. 6-12

Author(s):

Stoyan Dimitrov Slavov ◽

Iliyan Velichkov Iliev

Keyword(s):

Force Sensor ◽

Milling Machine ◽

Rotary Table ◽

Cnc Milling ◽

Ball Burnishing ◽

Full Factorial Experiment ◽

3D Shape ◽

Cnc Milling Machine ◽

Burnishing Process ◽

Full Factorial

The present research is focused on continuously measuring the variability of the burnishing force during conducting ball-burnishing process for specimens with surfaces with 3D shape, by using CNC milling machine with dual rotary table installed. For measuring the burnishing force and its variability, the specifically developed ball-burnishing tool with miniature force sensor was used. To assess the degree of influence of the main regime parameters on the variability of the burnishing force, the four factors full factorial experiment design with two levels per factor and four replications per run has been carried out. The experimental results are processed statisti-cally and techniques such as Pareto and ANOVA were used after that, for sorting them by degree of significance. Some conclusions about the magnitude and the causes of the obtained variability also are given.

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Research on the influence of the five-axis ball-burnishing process regime parameters on the resulted cells properties from regularly shaped roughness

ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA BULGARIA ◽

10.29114/ajtuv.vol3.iss1.121 ◽

2019 ◽

Vol 3 (1) ◽

pp. 40-53

Author(s):

Iliyan Velichkov Iliev

Keyword(s):

Dispersion Analysis ◽

Cnc Milling ◽

Ball Burnishing ◽

Complex Surfaces ◽

Type Iv ◽

Cnc Milling Machine ◽

Finishing Process ◽

Burnishing Process ◽

Dimensional Ball ◽

Five Axis

< p align="justify">The current study presents the results from the experimental research conducted on the influence of the regime parameters on the process for a five-dimensional Ball Burnishing (BB) finishing process with the help of a CNC milling machine on the Regular Reliefs (RR) obtained on complex functional surfaces. The elements of the technological system, necessary for the formation of RR of type IV on the complex surfaces, are presented. A planned factorial experiment is realized, through which the significantly affecting parameters of the BB process on the size and shape of the RR cells, are determined. The results obtained are statistically confirmed by a dispersion analysis (ANOVA) carried out. Conclusions, regarding the possibilities of obtaining RRs of type IV on complex surfaces through a process of five-axis simultaneous BB, are made.</p>

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Optimization of Quality Characterstics of CNC Milling Machine Using the Taguchi Method on Hot Die Steel H-13

Indian Journal Of Applied Research ◽

10.15373/2249555x/nov2013/62 ◽

2011 ◽

Vol 3 (11) ◽

pp. 190-191

Author(s):

Parveen Kumar ◽

◽

Deepak Choudhary

Keyword(s):

Taguchi Method ◽

Milling Machine ◽

Cnc Milling ◽

Die Steel ◽

Cnc Milling Machine

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Application of Taguchi and Response Surface Methodologies for Surface Roughness in Rotary Tool Polishing Hardness Mould Steels

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.87.82 ◽

2011 ◽

Vol 87 ◽

pp. 82-89

Author(s):

Potejanasak Potejana ◽

Chakthong Thongchattu

Keyword(s):

Surface Roughness ◽

Response Surface ◽

Laser Scanning ◽

Cutting Speed ◽

Optimal Level ◽

Confocal Laser ◽

Milling Machine ◽

Cnc Milling ◽

Polishing Process ◽

Cnc Milling Machine

This research proposes a new application of 3-axis CNC milling machine for polishing the 60 HRC hardness steels. The rotary polishing tools are designed by refer to the end-mill ball nose’s design. The diamond powder are coated in rotary polishing tools by resinoid bonding method and concentrated in 4.4 karat/cm2. The Zig-milling tool paths are used to polish the hardness steel. After polishing, the confocal laser scanning microscope is used to analyze the arithmetic mean surface roughness of the hardness steels. The L12 orthogonal array of the Taguchi’s method is selected to conduct the matrix experiment to determine the optimal polishing process parameters. The diamond grit size and cutting speed of the rotary polishing tools, feed rate and step over of the tool path, the depth of polishing process penetration, and polishing time are used to study. The combination of the optimal level for each factor of the hardness steel polishing process are used to study again in the confirmation experiment. The predicted signal to noise ratio of smaller - the better under optimal condition are calculated by using the data from the experiment. The combination of the optimal level for each factor are used to study again in the confirmation experiment and the result show that polishing time was a dominant parameter for the surface roughness and the next was depth of penetration. The response surface design is then used to build the relationship between the input parameters and output responses. The experimental results show that the integrated approach does indeed find the optimal parameters that result in very good output responses in the rotary polishing tools polished hardness mould steel using CNC milling machine. The mean surface roughness of hardness steel polishing process is improved by the diamond rotary tools with the 3-axis CNC milling machine.

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