Measurement of an off-axis parabolic mirror using coordinates measurement machine and swing arm profilometer during the grinding process

2012 ◽  
Author(s):  
Hongwei Jing ◽  
Changqing Lin ◽  
Bin Fan ◽  
Long Kuang ◽  
Shibin Wu ◽  
...  
Keyword(s):  
Grinding Process ◽  
Parabolic Mirror ◽  
Swing Arm

Cylindrical plunge grinding process of sialon.

1988 ◽  
Vol 54 (7) ◽  
pp. 1298-1303
Author(s):  
Toshikatsu NAKAJIMA ◽  
Yoshiyuki UNO ◽  
Takanori FUJIWARA ◽  
Atsunori IKEJIRI ◽  
Kazuhito OHASHI
Keyword(s):  
Grinding Process ◽  
Plunge Grinding

THEORETICAL STUDY OF THE EFFECT OF GEOMETRICAL PARAMETERS AND LOCATION OF ROTOR IMPACT ELEMENTS OF AN IMPACT-CENTRIFUGAL GRINDER ON SPEED AND ANGLES OF CRUSHED PARTICLES FLIGHT

2020 ◽  
Keyword(s):  
Granulometric Composition ◽  
Theoretical Study ◽  
Process Efficiency ◽  
Geometrical Parameters ◽  
Grinding Process ◽  
Main Work ◽  
Impact Element ◽  
The Impact ◽  
Positive Effect ◽  
Efficiency Indicators

One of efficiency indicators of grain grinders is grain granulometric composition. The basis of mixed fodder is crushed grain, the particles of which must have a leveled granulometric composition for subsequent mixing and obtaining a high-quality feed mixture. In agricultural production, hammer crushers are widely used, in which the destruction of grain occurs due to the impact of a hinged hammer. The main disadvantage of these crushers is that not the entire surface of the hammers is involved in grinding, thus reduces grinding process efficiency. A slightly different principle of material destruction is laid down in the basis of the proposed design of the shock-centrifugal grinder. Main work is performed by flat impact elements located on the rotor, which serve to accelerate crushed particles with subsequent impact of them on the bump elements. An important step in the design of new constructions of shock-centrifugal grinders is to determine size and location of the impact elements on the rotor, without which the grinding process is not possible. In the calculation method presented, the dependencies for determining the velocities and angles of a single particle flight from the surface of a flat impact element for its specified dimensions are proposed. Two variants of an impact element location on the rotor are considered and analyzed: radial and at an angle in the direction of rotor rotation. As a result of research carried out, it is noted that in the case of inclined position of an impact element on the rotor an increase in flight speed and flight angles change in crushed particles, which gives the opportunity to have a positive effect on grinding process.

Industrial manufacturing linked to the mechanical and economic viewpoint of the mold steel grinding process using aluminum oxide wheel

2021 ◽  
Author(s):  
Guilherme Bressan Moretti ◽  
Benício Nacif Ávila ◽  
José Claudio Lopes ◽  
Douglas Lyra de Moraes ◽  
Mateus Vinicius Garcia ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Grinding Process ◽  
Industrial Manufacturing

scholarly journals Wheat Grinding Process with Low Moisture Content: A New Approach for Wholemeal Flour Production

Processes ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 32
Author(s):  
Waleed H. Hassoon ◽  
Dariusz Dziki ◽  
Antoni Miś ◽  
Beata Biernacka
Keyword(s):  
Particle Size ◽  
Moisture Content ◽  
Average Particle Size ◽  
Average Particle ◽  
Grinding Process ◽  
Mixing Properties ◽  
New Approach ◽  
Grain Moisture ◽  
Flour Production ◽  
And Storage

The objective of this study was to determine the grinding characteristics of wheat with a low moisture content. Two kinds of wheat—soft spelt wheat and hard Khorasan wheat—were dried at 45 °C to reduce the moisture content from 12% to 5% (wet basis). Air drying at 45 °C and storage in a climatic chamber (45 °C, 10% relative humidity) were the methods used for grain dehydration. The grinding process was carried out using a knife mill. After grinding, the particle size distribution, average particle size and grinding energy indices were determined. In addition, the dough mixing properties of wholemeal flour dough were studied using a farinograph. It was observed that decreasing the moisture content in wheat grains from 12% to 5% made the grinding process more effective. As a result, the average particle size of the ground material was decreased. This effect was found in both soft and hard wheat. Importantly, lowering the grain moisture led to about a twofold decrease in the required grinding energy. Moreover, the flour obtained from the dried grains showed higher water absorption and higher dough stability during mixing. However, the method of grain dehydration had little or no effect on the results of the grinding process or dough properties.

scholarly journals Light-weighting of single-sided motorcycle swing-arm through generative design

2021 ◽  
Vol 1128 (1) ◽  
pp. 012016
Author(s):  
Adarsh Balasubramanian ◽  
G Shaktivel ◽  
N Raghukiran
Keyword(s):  
Generative Design ◽  
Swing Arm ◽  
Light Weighting
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