Grinding Wheel Loading Features Extracted by Image Processing

2006 ◽  
Vol 304-305 ◽  
pp. 14-18 ◽  
Author(s):  
Z. Feng ◽  
Xun Chen
Keyword(s):  
Image Processing ◽  
Processing Technology ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Abrasive Grains ◽  
Sobel Operator ◽  
Otsu’S Method ◽  
Metal Chips ◽  
Wheel Loading ◽  
Working Status

The paper presents a method that identifies and extracts features of chips on loading grinding wheel using image processing technology. The Sobel operator is adopted to detect chips edge. The segmenting threshold was obtained by applying Otsu's method. Image dilation connects the discontinuous segments to yield continuous and close shapes of chips. Erosion removes the noise from the image. The different optical characters between metal chips and abrasive grains are analysed. The ratios of chips are calculated and displayed to monitor the wheel surface working status. The toolbox of the MATLAB is used for image processing.

Grinding Wheel Loading Evaluation Using Digital Image Processing

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Hamed Adibi ◽  
S. M. Rezaei ◽  
Ahmed A. D. Sarhan
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Cutting Parameters ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Wheel Surface ◽  
Metal Chips ◽  
Wheel Loading ◽  
Expensive Process

Wheel loading entails chip accumulation in porosities between grains or welding to the top of cutting grains. It is considered one of the most prevalent problems in grinding Nickel-based super alloys. Identification of wheel loading is an important issue for optimizing the dressing intervals, but it can be a time consuming and an expensive process. A novel technique based on digital image processing to determine the loading areas over the surface of CBN vitrified grinding wheels using the toolbox of MATLAB is presented in this paper. The optical characteristics of the metal chips, the abrasive grains and wheel bond are considered. Experiments were performed to examine the repeatability of the proposed technique. The results were verified by the use of a scanning electron microscope. Based on the proposed technique, the effects of cutting parameters on the loaded area to wheel surface ratio in relation to grinding performance were studied empirically.

Development of Three-Dimensional Measurement System of a Grinding Wheel Surface with Image Processing

2011 ◽  
Vol 325 ◽  
pp. 294-299 ◽  
Author(s):  
Akihiro Sakaguchi ◽  
Tomoyuki Kawashita ◽  
Shuji Matsuo
Keyword(s):  
Image Processing ◽  
Measurement System ◽  
Three Dimensional ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Wheel Surface ◽  
Dimensional Measurement ◽  
Abrasive Grains ◽  
Three Dimensional Measurement ◽  
The One

Grinding process is a very efficient machining technology because innumerable abrasive grains are fixed on the surface of grinding wheel. Especially, the distribution and shape of cutting edges which directly affect grinding process have a big influence on accuracy. Thus, it is very important to measure a wheel surface topography from a viewpoint of evaluating the wheel life and the performance and a relation between the one and the roughness. In this study, a three-dimensional measurement system of a grinding wheel surface with image processing is developed. In this system, the distribution and height of cutting edges are analyzed because only cutting edges can be selected from among all abrasive grains.

Forming Mechanism of Composite Abrasive Grains in Oxide Film on ELID Wheel and its Microstructure

2016 ◽  
Vol 709 ◽  
pp. 77-81 ◽  
Author(s):  
Ji Cai Kuai ◽  
Cheng Ran Jiang ◽  
Jiang Wei Wang
Keyword(s):  
Oxide Film ◽  
Grinding Wheel ◽  
Compound Structure ◽  
Wheel Surface ◽  
Forming Mechanism ◽  
Elid Grinding ◽  
Abrasive Grains ◽  
Shaped Crack

In this paper we analyze the forming mechanism of composite abrasive grains in oxide film on ELID grinding wheel surface, By using composition information and by taking advantage of microscale structure, we have investigated that abrasive grains surface is covered by a layer of oxide film and the fresh oxide film is loose and porous like turtle shaped crack when crushed and dried. The elements of oxide film consist of α-Fe2O3 with sphere grain of 5-50nm. This phenomena is demonstrated that the composite abrasive grains in oxide film is a compound structure which is centered by abrasive grains, with α-Fe2O3,Fe (OH)3 surrounded.

scholarly journals Characterization of the Grinding Wheel Surface by Means of Image Processing (1st Report)

1996 ◽  
Vol 62 (9) ◽  
pp. 1297-1301 ◽  
Author(s):  
Akira HOSOKAWA ◽  
Heiji YASUI ◽  
Yukihisa KANAO ◽  
Kaoru SATO
Keyword(s):  
Image Processing ◽  
Grinding Wheel ◽  
Wheel Surface

Three Dimensional Analysis of a Grinding Wheel Surface with Image Processing

2012 ◽  
Vol 565 ◽  
pp. 177-182 ◽  
Author(s):  
Akihiro Sakaguchi ◽  
Tomoyuki Kawashita ◽  
Shuji Matsuo
Keyword(s):  
Image Processing ◽  
Three Dimensional ◽  
Grinding Wheel ◽  
Distribution Map ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Wheel Surface ◽  
Dimensional Measurement ◽  
Surface Topographies ◽  
Three Dimensional Measurement

It is very important to measure a grinding wheel surface topography. Therefore a three dimensional measurement system of grinding wheel surface with image processing has been proposed. This system can evaluate a variety of the wheel surface topographies. For example, a histogram of the area or the shape of cutting edges and the distribution map of every shape of cutting edges were obtained. In this paper, a three dimensional model of the cutting edges and a correlation between the state of the wheel surface and grinding mark on the workpiece are reported and the effectiveness is evaluated through an experiment.

Grinding of Carbon/Epoxy Composites Using Electroplated CBN Wheel with Controlled Abrasive Clusters

2008 ◽  
Vol 389-390 ◽  
pp. 24-29 ◽  
Author(s):  
H.P. Yuan ◽  
Hang Gao ◽  
Yong Jie Bao ◽  
Yong Bo Wu
Keyword(s):  
Epoxy Composite ◽  
Epoxy Composites ◽  
Grinding Wheel ◽  
The Novel ◽  
Grinding Wheels ◽  
Grinding Forces ◽  
Abrasive Grains ◽  
Dry Grinding ◽  
Conventional Grinding ◽  
Wheel Loading

Aiming at solving the problems of wheel loading in dry grinding of Carbon/Epoxy composite materials, a novel electroplated grinding wheel with controlled abrasive cluster was developed, in which the diameter of clusters is in Φ0.2 mm to Φ1.0 mm and the interspace between them is about 0.5 mm to 1.0 mm. A conventional electroplated grinding wheel with abrasive grains distributed randomly was fabricated in the same way. The comparison experiments involving C/E composite were conducted on a vertical spindle grinder with the novel and conventional grinding wheels. The results show that the grinding forces of novel wheel developed is more lower though little larger surface roughness, and the wheel loading phenomenon is markedly decreased compared with conventional electroplated wheel.

scholarly journals Analysis of chip shape distribution using image processing technology to estimate wearing condition of gear grinding wheel

Procedia CIRP ◽  
2019 ◽  
Vol 81 ◽  
pp. 381-386 ◽  
Author(s):  
Hiroyuki Karasawa ◽  
Takehito Yoshida ◽  
Rui Fukui ◽  
Toru Kizaki ◽  
Kohei Fujii ◽  
...  
Keyword(s):  
Image Processing ◽  
Processing Technology ◽  
Grinding Wheel ◽  
Shape Distribution ◽  
Gear Grinding ◽  
Image Processing Technology ◽  
Chip Shape

A Study on Fractal Dimension of Grit Protrusion Topography of Diamond Grinding Wheel

2008 ◽  
Vol 375-376 ◽  
pp. 583-587
Author(s):  
Jin Xie ◽  
Yu Guan Zhong
Keyword(s):  
Image Processing ◽  
Fractal Dimension ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Diamond Grit ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding

Fractal dimension is proposed to evaluate grit protrusion feature concerning grit protrusion area and length. The aim is to investigate crystal integrate of diamond grit protruded from grinding wheel after dressing. First, 3D crystal diamond grits are established in AutoCAD concerning various crystal configurations. Second, fractal dimension for original diamond grit is analyzed theoretically. Then, dressing experiment is carried out to investigate fractal dimension of grit protrusion topography by suing image processing of SEM photos of dressed grinding wheel surface. Finally, grit protrusion feature is investigated by fractal dimension concerning the depth of cut in dressing process. It is confirmed that fractal dimension can display grit protrusion feature and it may be used to evaluate dressing performance.

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