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The Correlations between Microstructures and Color Properties of Nanocrystalline Cellulose: A Concise Review. [PDF]
Polymers (Basel)Zhu K +7 more
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Bulgur milling using a helical disc mill
Journal of Food Engineering, 2008Abstract In the present study, a helical disc mill was used to mill bulgur. Screen analysis (%), colour (lightness, redness, yellowness and yellowness index), yield, loss, energy consumption, capacity, hectolitre-weight (bulk density), ash, and moisture contents of bulgur were followed at the different disc gaps (1.9, 1.6, 1.3, 1.2, 1.0, 0.8, 0.6, 0 ...
Ali Yıldırım +2 more
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Helical milling of CFRP–titanium layer compounds
CIRP Journal of Manufacturing Science and Technology, 2008Helical milling is used to generate boreholes by means of a milling tool being operated on a helical path into the workpiece. The bore diameter can be adjusted through the diameter of the helical path. In comparison to conventional drilling operations this process often results in lower burr formation and fiber delamination.
Denkena, Berend +2 more
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Modal Analysis of Helical Milling Unit
Advanced Materials Research, 2012Based on the analysis of the working principle and structure characteristics of helical milling unit, the prototype’s three-dimensional model was built, the prototype’s finite element modal analysis was conducted, and the first 6 natural frequencies and their mode shapes were obtained.
Xu Da Qin +4 more
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A review of helical milling process
International Journal of Machine Tools and Manufacture, 2017Abstract Helical milling is an alternative hole-making machining process which presents several advantages when compared to conventional drilling. In the helical milling process, the tool proceeds a helical path while rotates around its own axis.
Robson Bruno Dutra Pereira +4 more
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Milling path planning for helical surface copper electrodes
The International Journal of Advanced Manufacturing Technology, 2021Milling has the characteristics of flexibility and versatility, and can largely reduce the production cycle of customized tools. This study aims to mill helical surfaces of uniform roughness with universal tools in four-axis CNC machine tools through designing the optimal milling path.
Zhaoyao Shi +6 more
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Journal of Materials Processing Technology, 2020
Abstract Surface integrity of hole-making for Ti-6Al-4 V alloy is very important due to its application in aviation industry. Geometrical and mechanical behaviors of machined holes by helical milling (HM) and ultrasonic vibration helical milling (UVHM) were investigated.
Guang Chen +5 more
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Abstract Surface integrity of hole-making for Ti-6Al-4 V alloy is very important due to its application in aviation industry. Geometrical and mechanical behaviors of machined holes by helical milling (HM) and ultrasonic vibration helical milling (UVHM) were investigated.
Guang Chen +5 more
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Reduction mills in helical rolling
Steel in Translation, 2009The use of helical reduction mills is considered. Their scope in terms of rolling speed and deformation is assessed. The design and application of such mills is analyzed. A refined method is proposed for determining the width of the contact surface and the energy parameters. Experimental data are presented.
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Power and Forces in Milling S.A.E. 3150 Steel With Helical Mills
Journal of Fluids Engineering, 1937Abstract This paper outlines a series of tests conducted on a milling machine using slab mills of similar construction except for variation in rake angle, when milling an S.A.E. 3150 steel. The cutters had rake angles of 20, 15, 10, and 5 deg as variables, but otherwise were 3 in. in diameter, and had 12 teeth on a 25-deg left-hand helix.
O. W. Boston +2 more
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