Polishing Process Automation by Industrial Robot with Polished Surface Quality Judgment Based on Image Processing - Visual Inspection Based on Pattern Matching

2012 ◽  
Vol 523-524 ◽  
pp. 481-486
Author(s):  
Ken Okamoto ◽  
Koichi Morishige
Keyword(s):  
Image Processing ◽  
Surface Quality ◽  
Visual Inspection ◽  
Industrial Robot ◽  
Ccd Camera ◽  
Milling Process ◽  
Polished Surface ◽  
Process Automation ◽  
Polishing Process ◽  
Automatic Polishing

This study deals with automation of polishing process by using an industrial robot. In polishingprocess, full automation of polishing operation has not been achieved due to the difficulty invisual inspection. Judgment of whether polishing is sufficient or not has been performed by skilledworkers. In this study, the polishing after milling process is targeted. In the previous report, the generationof robot program for polishing operation based on CAD data was already proposed. Focusingon the periodicity of cutter mark patterns on milling surface, we proposed an automatic judgment ofpolished surface quality based on the image processing which uses Discrete Fourier Transformation.In order to capture images of polished surface, a CCD camera was mounted at 6-axis controlled robothand. However, the image processing method proposed in previous report could not judge the curvedcutter mark patterns because the periodicity of those patterns is not uniform. The objective of thisreport is the development of automatic judgment method for non-periodic cutter mark patterns. Wedeveloped judgment method which uses pattern recognition as a mean to judge existence or not of cuttermarks. As a result, the developed system allows the automatic polishing that includes the surfacequality judgment.

Polishing Process Automation by Industrial Robots with Polished Surface Quality Judged Based on Imaging Processing

2009 ◽  
Vol 3 (2) ◽  
pp. 130-135 ◽  
Author(s):  
Tomoya Ito ◽  
◽  
Koichi Morishige
Keyword(s):  
Image Processing ◽  
Surface Quality ◽  
Personal Computer ◽  
Industrial Robots ◽  
Polished Surface ◽  
Process Automation ◽  
Polishing Process ◽  
Imaging Processing ◽  
Skilled Personnel ◽  
Cad Cam

In polishing-process automation, research is focusing on having industrial robots replace skilled personnel. In judging whether polishing is sufficient, and robot polishing programs using CAD/CAM have been proposed. We propose that polished surface quality the judged based on image processing, with the robot polishing using a personal computer and signal communication.

Flexible Polishing Machine with Dual Grinding Heads for Aeroengine Blade and Blisk

2011 ◽  
Vol 317-319 ◽  
pp. 2454-2460 ◽  
Author(s):  
Ji Hao Duan ◽  
Yao Yao Shi ◽  
Xiao Jun Lin ◽  
Ting Dong
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
Control Method ◽  
Milling Process ◽  
Free Form ◽  
Skilled Workers ◽  
Polishing Process ◽  
Automatic Polishing ◽  
Polishing Machine ◽  
Polishing Tool

The blade and blisk manufacturing includes polishing process when the surface roughness and size requirement of profile are disqualified after milling process. This polishing process is mainly carried out manually by skilled workers or NC machines. However, the existing polishing technology always leads to surface quality instability and inconsistency because of the complex free-form surface of blade and blisk. Therefore, in this paper, based on the research of polishing requirements and methods of blade and blisk, an automatic 6-axis polishing machine was proposed in order to enhance surface quality. And then, a polishing mechanism was designed using flexible technique to make the polishing tool accommodate surface waviness which was produced in milling process. In addition, the working principle and control method of flexible polishing mechanism were studied. Finally, the polishing test results of blade and blisk showed that the profile error was about 0.06mm and the surface roughness was less than Ra0.4 after automatic polishing. Compared with the manual polishing process, the automatic polishing technology not only increased the polishing efficiency and quality stability, but also reduced labor intensity largely.

scholarly journals Study on Flexible Polishing Force and Polishing Temperature of Flap Disc

2021 ◽  
Author(s):  
De Liu ◽  
Xiaoming Pan ◽  
Zhiyang Gu ◽  
Hui Qiu
Keyword(s):  
Surface Quality ◽  
Process Parameters ◽  
Great Influence ◽  
Contact Length ◽  
Polished Surface ◽  
Polishing Process ◽  
Influence Of Process Parameters ◽  
Polishing Force ◽  
Working Principle ◽  
Cutting Model

Abstract Polishing determines the final surface quality of the aero engine, which have great influence on its working performance and working life. By analyzing the structure and working principle of the flexible self-adaptive polishing platform of the blisk, the abrasive cutting model of the flap disc is established. The theoretical calculation of the effect of elastic deformation during the polishing process on the contact length of flap disc and blisk. The model of polishing force, polishing heat and temperature field during the polishing process of the flap disc are established and analyzed. Single factor method is used to analyze the influence of process parameters on polishing force, polishing temperature, roughness and specific polishing energy. Finally, the polishing test shows that the optimized process parameters improve the polished surface quality and meet the requirements of the blade polishing process.

Evaluation of Metallic Mold Surfaces Polished by an Industrial Robot with Stick Whetstones

2014 ◽  
Vol 8 (2) ◽  
pp. 253-263 ◽  
Author(s):  
Koji Shibuya ◽  
◽  
Shunsuke Issiki
Keyword(s):  
Material Handling ◽  
Electrical Discharge Machining ◽  
Industrial Robot ◽  
Experimental Results ◽  
Polished Surface ◽  
Skilled Workers ◽  
Robot System ◽  
Flat Surfaces ◽  
Automatic Polishing ◽  
Suitable Combination

Our ultimate goal is to develop an automatic polishing system that uses an industrial robot equipped with whetstones. The robot mimics the movements skilled workers make as they polish surfaces manually. This paper, the first step in the development of our system, presents experimental results to prove that our system completely removes the marks, which is the most time-consuming and crucial process for human workers, from the flat surfaces of metallic molds produced through the Electrical Discharge Machining (EDM) process. We build a polishing system that consists of a small 6-DOF industrial robot for material handling. Attached to its wrist is a six-axis force-torque sensor and it employs a whetstone holding mechanism. Before the robot system begins its polishing work, the normal force to be applied to the flat surface can be adjusted to a target value by altering the height of the hand. We adopt two polishing paths for the whetstone, reciprocating and zigzag. We then conduct experiments using the two paths, visually inspect the surface, and measure the surface roughness and shape. Based on the experimental results, we confirm that the system has completely removed the EDM mark layer. Although we find that the zigzag path leaves striped patterns on the polished surface, we are not able to determine their cause. Finally, we test three combinations of the two paths under different conditions to find the most suitable combination.

Automatic Polishing Technology on Free Surface by Grinding Center

2010 ◽  
Vol 139-141 ◽  
pp. 739-742
Author(s):  
Xiao Jun Wu ◽  
Shu Dong Sun ◽  
Chao Zheng
Keyword(s):  
Free Surface ◽  
Polished Surface ◽  
Polishing Process ◽  
Free Surfaces ◽  
Form Accuracy ◽  
Automatic Polishing ◽  
Long Time ◽  
Cusp Height ◽  
Basic Experiments ◽  
Die And Mold

Die and mold are constructed with various free surfaces. In the machining of die and mold, it takes a long time to finish the curved surface. In this study high accurate polishing technique by GC (grinding center) with elastic ball type wheel is developed. In polishing process it is very important to remove cusp height without decreasing machined form accuracy. It is available to use GC in free surface grinding and finishing of die and mold with elastic ball type wheel. In polishing process only cusp height is removed in order to keep form accuracy that is produced in cutting process with ball end mill. In order to know the polishing characteristics of elastic ball type wheel, basic experiments were conducted. The polishing parameters Sp. were obtained experimentally by changing the values of polishing process. Using polishing parameter, removal amount can be obtained and polished surface is possible to estimate.

Performance Evaluation of Robot Polishing in Macro-Micro System Based Polishing Robot

2021 ◽  
Author(s):  
Katsuki Koto ◽  
Takuhiro Tsukada ◽  
Shotaro Ogawa ◽  
Yasuhiro Kakinuma
Keyword(s):  
Mechanical Design ◽  
Industrial Robot ◽  
Polished Surface ◽  
Skilled Workers ◽  
End Effector ◽  
Mechanical Parts ◽  
Automatic Polishing ◽  
Polishing Force ◽  
End Effectors ◽  
Tool Rotation

Abstract Polishing is an important process performed in the finishing and repair processes of mechanical parts and is still a manual work of skilled workers. However, in addition to the time and cost required for manual polishing, there are also problems such as a decrease in the number of workers and health hazards due to dust generated during polishing. From these problems, the demand for automatic polishing is increasing at manufacturing sites. To automate polishing process, a macro-micro system based polishing robot which consists of a functional end-effector and industrial robot has been proposed. Regarding end effectors, mechanical design aiming for high rigidity and motion control methods for keeping the contact force constant is being researched. Meanwhile, the tool rotation speed of the spindle is independently controlled typically. Therefore, in this research, a functional polishing module capable of polishing force control and tool rotation control according to the tool feed rate is developed as the end effector. For the polishing automation, the macro-micro system based polishing robot is constructed attaching the polishing module to the industrial robot. From the viewpoint of Preston’s law, the effectiveness of the robot polishing is investigated through polishing experiments and measuring the shape of the polished surface.

Automated electron tomography: from data collection to image processing

1995 ◽  
Vol 53 ◽  
pp. 26-27
Author(s):  
Weiping Liu ◽  
Jennifer Fung ◽  
W.J. de Ruijter ◽  
Hans Chen ◽  
John W. Sedat ◽  
...  
Keyword(s):  
Image Processing ◽  
Data Collection ◽  
Structural Information ◽  
Imaging Technique ◽  
Electron Tomography ◽  
Ccd Camera ◽  
Automated Data Collection ◽  
Full Control ◽  
Transmission Electron ◽  
Amorphous Structures

Electron tomography is a technique where many projections of an object are collected from the transmission electron microscope (TEM), and are then used to reconstruct the object in its entirety, allowing internal structure to be viewed. As vital as is the 3-D structural information and with no other 3-D imaging technique to compete in its resolution range, electron tomography of amorphous structures has been exercised only sporadically over the last ten years. Its general lack of popularity can be attributed to the tediousness of the entire process starting from the data collection, image processing for reconstruction, and extending to the 3-D image analysis. We have been investing effort to automate all aspects of electron tomography. Our systems of data collection and tomographic image processing will be briefly described.To date, we have developed a second generation automated data collection system based on an SGI workstation (Fig. 1) (The previous version used a micro VAX). The computer takes full control of the microscope operations with its graphical menu driven environment. This is made possible by the direct digital recording of images using the CCD camera.

Detection of Leukemia Using Image Processing

2018 ◽  
Vol 8 (4) ◽  
pp. 61
Author(s):  
A. Sivasangari ◽  
G. Sasikumar
Keyword(s):  
Image Processing ◽  
Statistical Analysis ◽  
Early Detection ◽  
Visual Inspection ◽  
Causes Of Death ◽  
Cure Rate ◽  
Blood Disorders ◽  
Detection And Diagnosis ◽  
The Moment ◽  
Early Detection And Diagnosis

Leukemia   disease   is one   of    the   leading   causes   of death   among   human. Its  cure  rate and  prognosis   depends   mainly   on  the  early  detection   and  diagnosis  of   the  disease. At  the  moment, identification  of  blood  disorders  is  through   visual  inspection  of  microscopic  images  by  examining  changes  like  texture, geometry, colour  and   statistical  analysis  of  images . This  project  aims  to  preliminary  of  developing  a  detection  of  leukemia  types  using   microscopic  blood  sample using MATLAB. Images  are  used  as  they  are  cheap  and  do  not  expensive  for testing  and  lab  equipment.

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