High Speed Measuring of a Grinding Tool Surface Topography by a Voronoi Diagram

2016 ◽  
Vol 874 ◽  
pp. 537-542
Author(s):  
Akihiro Sakaguchi ◽  
Tomoyuki Kawashita ◽  
Tadafumi Kawaguchi ◽  
Shoutoku Matsui ◽  
Junya Maeda ◽  
...  
Keyword(s):  
Surface Topography ◽  
Voronoi Diagram ◽  
High Speed ◽  
Evaluation Method ◽  
Three Dimensional ◽  
Grinding Wheel ◽  
Voronoi Region ◽  
Tool Surface ◽  
Three Dimensional Measurement ◽  
Grinding Tool

It is very important that a grinding tool surface topography is measured and analyzed. In this paper, a line scan camera is installed in our three dimensional measurement system by shortening a measurement time. In this experiment, a diamond grinding wheel SD140Q100M is employed. As a result, the time can be reduced to about 24[s] from 1380[s]. On the other hand, a voronoi diagram is introduced as an evaluation method of a distribution of cutting edges on the grinding tool. According this method, the dispersion can be visualized. Furthermore, it is found that the voronoi region has a relation to a protrusion height of the cutting edge.

scholarly journals Three-dimensional measurement and characterization of grinding tool topography

2013 ◽  
Author(s):  
Changcai Cui ◽  
Liam Blunt ◽  
Xiangqian Jiang ◽  
Xipeng Xu ◽  
Hui Huang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement ◽  
Grinding Tool

Influence Characteristics of Tool Vibration and Wear on Machined Surface Topography in High-Speed Milling

2014 ◽  
Vol 800-801 ◽  
pp. 585-589
Author(s):  
Bin Jiang ◽  
Guang Lei Cao ◽  
Ming Hui Zhang ◽  
Shou Zheng Sun ◽  
Xuan Chi Liu
Keyword(s):  
Tool Wear ◽  
Surface Topography ◽  
High Speed ◽  
Three Dimensional ◽  
Cutting Parameters ◽  
Three Dimensional Model ◽  
Machined Surface ◽  
Tool Vibration ◽  
Key Factor ◽  
Vibration Measuring

Existing research on machined surface topography, only consider its response to vibration or wear certain factors, both vibration and wear impact on machined surface topography exist ambiguity and uncertainty, it cannot solve the design conflicts of machined surface topography. For this, this paper analyzes blade installation error, tool wear, vibration and deformation to reveal effects of tip space trajectory, build a three-dimensional model of machined surface topography in simulation, extract its characteristic parameters, by simulation of different amplitudes and wear, found that axis amplitude is a key factor affecting surface residual height, flank wear affects contour distribution distance significantly, by specimen milling experiments, use vibration measuring instrument and ultra-depth microscopy to obtain vibration, wear characteristics and machined surface topography parameters under different cutting parameters, then use the gray system theory to get correlation analysis of the test data, results showed that the influence of tool wear on machined surface topography is prominent than tool vibration.

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.

Three-dimensional measurement by high-speed line-field Fourier-domain optical coherence tomography in vivo

2006 ◽  
Author(s):  
Shuichi Makita ◽  
Yosifumi Nakamura ◽  
Yoshiaki Yasuno ◽  
Takashi Endo ◽  
Masahiro Yamanari ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
High Speed ◽  
Three Dimensional ◽  
Fourier Domain ◽  
Optical Coherence ◽  
Line Field ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement

Structured Light Field Generated by Two Projectors for High-Speed Three Dimensional Measurement

2016 ◽  
Vol 28 (4) ◽  
pp. 523-532 ◽  
Author(s):  
Akihiro Obara ◽  
◽  
Xu Yang ◽  
Hiromasa Oku ◽  
Keyword(s):  
High Speed ◽  
Light Field ◽  
Stereo Matching ◽  
Structured Light ◽  
Three Dimensional ◽  
Depth Estimation ◽  
Image Features ◽  
Depth Information ◽  
Speed Tracking ◽  
Three Dimensional Measurement

[abstFig src='/00280004/10.jpg' width='300' text='Concept of SLF generated by two projectors' ] Triangulation is commonly used to restore 3D scenes, but its frame of less than 30 fps due to time-consuming stereo-matching is an obstacle for applications requiring that results be fed back in real time. The structured light field (SLF) our group proposed previously reduced the amount of calculation in 3D restoration, realizing high-speed measurement. Specifically, the SLF estimates depth information by projecting information on distance directly to a target. The SLF synthesized as reported, however, presents difficulty in extracting image features for depth estimation. In this paper, we propose synthesizing the SLF using two projectors with a certain layout. Our proposed SLF’s basic properties are based on an optical model. We evaluated the SLF’s performance using a prototype we developed and applied to the high-speed depth estimation of a target moving randomly at a speed of 1000 Hz. We demonstrate the target’s high-speed tracking based on high-speed depth information feedback.

Visualization of 3D Topography of Grinding Wheel Surface Dressed by Rotary Diamond Dresser

2013 ◽  
Vol 797 ◽  
pp. 751-756 ◽  
Author(s):  
Akihiko Kubo ◽  
M.A.K. Chowdhury ◽  
Shoma Noda ◽  
Junichi Tamaki ◽  
A.M.M. Sharif Ullah
Keyword(s):  
Surface Topography ◽  
Feed Rate ◽  
Velocity Ratio ◽  
Three Dimensional ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Single Pass ◽  
3D Topography ◽  
Computer Aided

A computer-aided simulation was developed to visualize the three-dimensional topography of a grinding wheel surface dressed by a rotary diamond dresser (RDD), and the effects of up-cut and down-cut dressing on the roughness of the dressed surface were examined to demonstrate the effectiveness of the simulation. In the case of single-pass dressing, the roughness of the grinding wheel surface decreased with decreasing dresser feed rate and approached a constant value depending on the velocity ratio of the RDD to the grinding wheel. In the case of multipass dressing, up-cut dressing provided the grinding wheel with a surface topography which was much more stable than that provided by down-cut dressing.

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