A Study on Surface Generation of Metal-Bonded Diamond Grinding Wheel Dressed by Electro-Contact Discharge

2006 ◽  
pp. 76-80
Author(s):  
Jin Xie ◽  
Yong Tang ◽  
Junichi Tamaki
Keyword(s):  
Surface Generation ◽  
Grinding Wheel ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Contact Discharge

A Study on Surface Generation of Metal-Bonded Diamond Grinding Wheel Dressed by Electro-Contact Discharge

2006 ◽  
Vol 304-305 ◽  
pp. 76-80 ◽  
Author(s):  
Jin Xie ◽  
Yong Tang ◽  
Junichi Tamaki
Keyword(s):  
Ground Surface ◽  
Open Circuit ◽  
Surface Generation ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Eds Analysis ◽  
Fine Diamond ◽  
Contact Discharge

This paper conducted Electro-Contact Discharge (ECD) dressing experiment for #600 diamond grinding wheel to understand how fine diamond grits protrude from metal-bonded wheel surface. The SEM observation, EDS analysis, image processing and 3D grit modeling on wheel surface were carried out to investigate grit protrusion characteristics. Then ECD dressing and mechanical dressing experiments were carried out to identify the effect of grit protrusion feature on grinding performance. It is confirmed that the dressed wheel surface topography is sensitive to open circuit voltage Ei, discharge polarity and electrode composition. Meanwhile, ECD dressing with Ei=15V and straight polarity can produce superior protrusion topography without the damage of diamond crystal faces and the bond tail behind protrusive grit. It can obtain better ground surface of hard-brittle material than mechanical dressing with the bond tail.

High Efficiency Abrasive Waterjet Dressing of Diamond Grinding Wheel

2014 ◽  
Vol 1017 ◽  
pp. 243-248 ◽  
Author(s):  
Peng Yao ◽  
Wei Wang ◽  
Chuan Zhen Huang ◽  
Jun Wang ◽  
Hong Tao Zhu ◽  
...  
Keyword(s):  
Feed Rate ◽  
High Efficiency ◽  
Water Jet ◽  
Surface Generation ◽  
Abrasive Waterjet ◽  
Grinding Wheel ◽  
Abrasive Water Jet ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Wheel Topography

A grinding wheel wears rapidly during ultrasonic assisted surface generation of a large aperture aspherical RB-SiC mirror, which leads to an increase of grinding force and profile error. In this paper, different types of resinoid bonded diamond grinding wheel with a same grit size were dressed with high-pressure abrasive water jet. The dressing effects of abrasive water jet were assessed through comparing the 3D roughness of the grinding wheel topographies before and after dressing. The experimental results show that diamond grits of a worn grinding wheel are protruding from bond after dressing. The feed rate of nozzle and the bond materials have significant impact on the 3D surface roughness of the wheel and dressing efficient. The softer binder and the decrease of the feed rates and lead to deeper grooves during dressing of grinding wheel. However, too low feed rate will make a large number of abrasive particles drop from binder, which worsens the wheel topography. Therefore, to dress grinding wheel well and efficiently, optimized feed rate must be chosen.

Arc Envelope Truing of Metal-Bonded Diamond Grinding Wheel by Use of Cone-Shaped Truer

2006 ◽  
Vol 315-316 ◽  
pp. 421-424 ◽  
Author(s):  
Jin Xie ◽  
Junichi Tamaki ◽  
Yong Tang
Keyword(s):  
Ground Surface ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Form Accuracy ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Lean Angle ◽  
Spatial Geometry ◽  
Wheel Profile ◽  
Contact Discharge

This paper introduces a new arc envelop truing method of metal-bonded diamond grinding. It utilizes the arc profile of rotary cone-shaped truer, namely electrode, to envelop wheel profile during Electro-Contact Discharge (ECD) truing. The aim is to realize precision truing of diamond grinding wheel profile for grinding of hard-brittle material. The arc envelope truing principle of wheel profile was analyzed by the use of 3D spatial geometry to identify lean angle of the truer. Then the arc envelop truing and grinding experiments were carried out to investigate truing precision and ground surface in comparison with straight truing and GC stick truing. It was confirmed that the arc envelope truing can obtain sub-micro truing precision of metal-bonded diamond grinding wheel at the depth of cut of micro degree. It may improve greatly form accuracy and ground surface.

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