Fabrication of Porous Metal Bonded Diamond Grinding Wheels for Flat-Surface Nanomachining

MRS Bulletin ◽  
2001 ◽  
Vol 26 (7) ◽  
pp. 544-546 ◽  
Author(s):  
Koji Matsumaru ◽  
Atsushi Takata
Keyword(s):  
Flat Surface ◽  
Porous Metal ◽  
Small Scale ◽  
Grinding Wheels ◽  
Related Area ◽  
Flat Surfaces ◽  
Diamond Grinding ◽  
The Creation

The articles thus far in this MRS Bulletin issue on Emerging Methods for Micro- and Nanofabrication have addressed the creation of structures or devices on a small scale. What is implicit in some of these articles is that a substrate of sufficient flatness is available upon which to build these structures in a controlled way. A related area, therefore, is the formation of these flat surfaces, as well as the development of the tools to make them.

Experimental Study on Porous Metal Bonded Diamond Grinding Wheels - The Selection of Porosity Inducers and Agglomeration’s Parameter

2011 ◽  
Vol 415-417 ◽  
pp. 594-597 ◽  
Author(s):  
Hua Xu ◽  
Cui Jiao Liao ◽  
Qing Ming Weng
Keyword(s):  
Experimental Study ◽  
Porous Metal ◽  
The Self ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Porosity Structure ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Selection Of

To improve the self-sharpening ability and increase clearance for debris of metal bonded diamond grinding wheel, the porosity structure is applied to the diamond grinding wheel in this paper. By selecting different inducers diamond composites are burned under appropriate agglomeration condition. The experiment results indicate that diamond composites obtained through two certain inducers can meet both the demand of pore-creating and intensity, so can be used to make wheels. This conclusion lays a foundation for further study.

Formation Mechanism of Grain Cutting Edges in Micro Dressing of Polycrystalline cBN Grinding Wheels

2012 ◽  
Vol 523-524 ◽  
pp. 137-142 ◽  
Author(s):  
Yoshio Ichida
Keyword(s):  
Flat Surface ◽  
Coarse Grain ◽  
Grinding Wheels ◽  
Wheel Surface ◽  
Dressing Method ◽  
Diamond Cutting ◽  
Flat Surfaces ◽  
Fine Grain ◽  
Working Surface ◽  
Ductile Removal

This paper presents a mechanism for the formation of grain cutting edges in the micro dressing of coarse-grain polycrystalline cubic boron nitrite (cBN) grinding wheels using a fine-grain diamond dresser. Many grain cutting edges having a flat surface consisting of ductile smooth surfaces as well as many brittle micro dents, are formed on the working surface of the coarse-grain (#80 mesh) cBN wheel by micro dressing using a fine-grain (#1200 mesh) diamond dresser. This result shows that the flat surfaces of cutting edges on the wheel surface are formed on the basis of a ductile removal process as well as a brittle micro-fracturing of cBN grains by the diamond cutting edges. Moreover, cylindrical grinding experiments with these wheel working surfaces were conducted to clarify the feasibilyty of creating a ground mirror-like surface. As a result, it was confirmed that high-quality mirror surfaces with roughness less than 0.03 m Ra can be efficiently formed using the working surface prepared by this micro dressing method.

scholarly journals High-Precision Laser Conditioning of Diamond Grinding Wheels

2019 ◽  
Author(s):  
Norbert Ackerl ◽  
Maximilian Warhanek ◽  
Johannes Gysel ◽  
Konrad Wegener
Keyword(s):  
High Precision ◽  
Complex Geometry ◽  
Ablation Rate ◽  
Process Time ◽  
Small Scale ◽  
Scale Production ◽  
Grinding Wheels ◽  
Free Standing ◽  
Diamond Grinding ◽  
Novel Approach

A novel approach for machining of cylindrical hard materials and arbitrary shapes is presented. Diamond grinding tools with complex geometry are manufactured with picosecond orthogonal and quasi-tangential combined laser ablation. This rapid and flexible approach for small-scale production of master tools for industrial production trumps conventional approaches. Hitherto, the overall process time is faster compared to conventional technologies with the benefit of free standing diamond grains. A laser manufacturing chain achieving an ablation rate of 35mm3/min with a maximal geometric deviation of 3μm is presented. The meta-stable diamond structure persists and is assessed via Raman spectroscopy. The final grinding tools is sharpened by a radial laser process removing preferentially the metal-based binding material. This isolates the statistically distributed diamond grains from the binder. Hence, high-precision diamond grinding wheels with a mean error of smaller 1μm over the complete contour can be manufactured.

CREATION METHOD OF THE SMALL-SCALE MODULAR ENTERPRISE ON CORN PROCESSING

2020 ◽  
Author(s):  
V.I. Pakhomov ◽  
◽  
S.V. Braginets ◽  
O.N. Bakhchevnikov ◽  
◽  
...  
Keyword(s):  
Small Scale ◽  
Processing Plant ◽  
Corn Processing ◽  
The Creation

The creation method of the small-scale modular enterprise on corn processing is offered.The modular corn processing plant consists of the container modules which are turning on all necessary machinery.The offered method is perspective for the organization of intraeconomic production.The method creates an opportunity to quickly create the corn processing small-scale plant according to the modern requirements, having provided some qualitative food and feeds from the produced corn.

Marketing and Sickness in Micro and Small Enterprises in India: An Inter-State Analysis with Special Reference to the Engineering Enterprises in the District of Howrah, West Bengal

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Manidipa Dasgupta
Keyword(s):  
Special Reference ◽  
West Bengal ◽  
Small Scale ◽  
Small Enterprises ◽  
Related Area ◽  
Micro And Small Enterprises ◽  
Economic Advancement ◽  
Small Scale Industries ◽  
Inter State ◽  
State Analysis

Micro and Small Enterprises (MSEs) [formerly Tiny and Small Scale Industries (SSIs)] are recognized as the main contributors in socio-economic advancement of any country especially the developing one like India. But due to some controllable and/or uncontrollable factors, MSEs cannot get themselves free from sickness. Sickness in MSEs expands its steps in all states in India amongst which West Bengal (WB) is specially notable mainly due to the continuous degradation of Micro and Small Engineering Enterprises of the then Birmingham/Sheffield of the East, Howrah. In WB, Howrah is considered to be the most incipient sickness-prone district for MSEs. Government effort to locate the probable causes of sickness of MSEs has exposed that in India, lack of demand of the product of MSEs in market is the most sever one, while in WB, marketing problem holds the maximum severity, followed by lack of demand which is also partially due to the marketing problem. The present paper aims at identifying how far the major responsible causes in marketing related area are liable in bringing about sickness in Micro and Small Engineering Enterprises.

Surface and Sub-Surface Integrity of Ultra- Machined BK7 Using Fine and Coarse Grained Diamond Wheels

2007 ◽  
Vol 359-360 ◽  
pp. 234-238 ◽  
Author(s):  
Qing Liang Zhao ◽  
Bo Wang ◽  
Ekkard Brinksmeier ◽  
Otmann Riemer ◽  
Kai Rickens ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Integrity ◽  
High Surface ◽  
Coarse Grained ◽  
Nanometer Scale ◽  
Grinding Wheels ◽  
Fine Grained ◽  
Optical Glasses ◽  
Diamond Grinding ◽  
Surface Damages

This paper aims to evaluate the surface and sub-surface integrity of optical glasses which were correspondingly machined by coarse and fine-grained diamond grinding wheels on Tetraform ‘C’ and Nanotech 500FG. The experimental results show that coarse-grained diamond grinding wheels are capable of ductile grinding of optical glasses with high surface and sub-surface integrity. The surface roughness values are all in nanometer scale and the sub-surface damages are around several micros in depth, which is comparative to those machined by fine-grained diamond wheels.

A study on diamond grinding wheels with regular grain distribution using additive manufacturing (AM) technology

2016 ◽  
Vol 104 ◽  
pp. 292-297 ◽  
Author(s):  
Zhibo Yang ◽  
Mingjun Zhang ◽  
Zhen Zhang ◽  
Aiju Liu ◽  
RuiYun Yang ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Grinding Wheels ◽  
Diamond Grinding ◽  
Grain Distribution

Dressing Technology on the Diamond Abrasive Grinding Wheels Using the Rotary Diamond Dresser

2009 ◽  
Vol 416 ◽  
pp. 234-237
Author(s):  
Zhong Ming Cui ◽  
Peng Hui Deng ◽  
Lei Du
Keyword(s):  
Single Point ◽  
Grinding Wheels ◽  
Dressing Method ◽  
Diamond Tools ◽  
Diamond Grinding ◽  
Dressing Tool ◽  
Dressing Force ◽  
Diamond Abrasive ◽  
Better Than

The dressing processes are conducted on the diamond grinding wheels using the rotary diamond tools and compared between the single point diamond dresser and the rotary diamond dressing tool in the following aspects, including the dressing force, tool wearing, dressing efficiency. The result shows that, the dressing performance of the rotary diamond tools is remarkable better than that of the conventional dressing method.

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