Theoretical and experimental study of temperature field in noncircular high-speed grinding

Lubrication and cooling of a high speed grinding process in the grinding machine as in a mechatronic system using technological liquids are analyzed in this paper. It is shown that in the case of high grinding speed, technological liquids undergo an aeration process and due to this their physical properties change. Reynolds equation, which estimates the aeration liquid, is derived. It is shown, that the application of such an equation is proper only in the finishing of grinding. Experimental research is also presented in the paper, which shows the influence of technological liquids to the temperature field of the grinding machine and to its automatic control.

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Investigation of Temperature Distribution in High-Speed End Mill Assisted by Heat Pipe Cooling

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.418-420.1154 ◽

2011 ◽

Vol 418-420 ◽

pp. 1154-1157

Author(s):

Qing Hua Song ◽

Hua Wei Ju ◽

Wei Xiao Tang

Keyword(s):

Experimental Study ◽

Temperature Field ◽

Heat Pipe ◽

High Speed ◽

Experimental Studies ◽

Solid Cylinder ◽

End Mill ◽

Milling Operations ◽

Cylinder Model ◽

Pipe Mill

A combined numerical and experimental study is performed to analyze the feasibility of using heat pipe cooling in milling applications. In this model, it is assumed that the end mill is subjected to a static heat source which verifies the analysis and feasibility of using heat pipe cooling in milling operations. The performance of heat pipe mill model is approximated using a solid cylinder model of pure conduction. Both the numerical and experimental studies show that the use of a heat pipe in a mill can reduce the temperature field significantly.

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Experimental Study on High Speed Grinding with Single Grit on Tooth Surface of 20CrMnTi Steel

Proceedings of the 2016 6th International Conference on Mechatronics, Computer and Education Informationization (MCEI 2016) ◽

10.2991/mcei-16.2016.263 ◽

2016 ◽

Author(s):

Long Wang ◽

Xinli Tian ◽

Qian Liu ◽

Heng Gao ◽

Yang Zhang ◽

...

Keyword(s):

Experimental Study ◽

High Speed ◽

Tooth Surface ◽

High Speed Grinding

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Experimental study of single cubic boron nitride grains in the ultrasound-assisted high-speed grinding

Advances in Mechanical Engineering ◽

10.1177/1687814017693543 ◽

2017 ◽

Vol 9 (2) ◽

pp. 168781401769354 ◽

Cited By ~ 1

Author(s):

Dao-hui Xiang ◽

Zhong-yun Liu ◽

Zhi-kun Zhou ◽

Yun-long Yao

Keyword(s):

Experimental Study ◽

Boron Nitride ◽

Surface Quality ◽

High Speed ◽

Cubic Boron Nitride ◽

Grinding Force ◽

Abrasive Particles ◽

Ultrasonic Assisted ◽

High Speed Grinding

The kinematic characteristics, grinding force, surface quality of workpiece surface, and wear of abrasive particles were studied by theoretical analysis and experimental study on the single cubic boron nitride abrasive particles under ultrasonic-assisted high-speed grinding. Under the condition of the same grinding parameters, the motion characteristics and the grinding forces of the two machining modes of general grinding and ultrasonic-assisted grinding are compared and analyzed. Research shows that the ultrasonic vibration is applied in the common external circular grinding on grinding particle movement characteristics changed obviously, grinding particle trajectory of variable length, cutting groove width wider, thereby improving the grinding efficiency and the grinding removal rate; ultrasonic assisted under high speed grinding, the grinding force is higher than that of common grinding force is small, efficiency of grinding under ultrasonic processing mode is much higher than ordinary grinding, the surface quality of the workpiece has improved markedly.

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Resistance Coefficient Research of the Train Air Supply Orifice

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.614-615.475 ◽

2012 ◽

Vol 614-615 ◽

pp. 475-479

Author(s):

Hai Ying Wang ◽

Chun Fang Li ◽

Song Tao Hu ◽

Lin Song

Keyword(s):

Experimental Study ◽

Temperature Field ◽

Air Conditioning ◽

High Speed ◽

Plate Thickness ◽

Resistance Coefficient ◽

High Speed Train ◽

Air Conditioning System ◽

Air Supply ◽

Air Conditioning Systems

High-speed train air-conditioning systems put forward higher request on the aspect of air uniformity and comfort. The use of orifice which can form a more uniform velocity and temperature field in the car can be widely applied to high-speed train air-conditioning system. The experimental study of the influence of several different factors (such as the opening rate, aperture, orifice plate thickness, etc.) in the research may provide a reference for the design choices of the orifice type.

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Experimental study of time-dependent performance in superalloy high-speed grinding with cBN wheels

Machining Science and Technology ◽

10.1080/10910344.2016.1224018 ◽

2016 ◽

Vol 20 (4) ◽

pp. 615-633 ◽

Cited By ~ 5

Author(s):

Geng Zhi ◽

Xuekun Li ◽

Zhiqiang Qian ◽

Haitao Liu ◽

Yiming Rong

Keyword(s):

Experimental Study ◽

High Speed ◽

Time Dependent ◽

High Speed Grinding

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Simulation of Temperature Field of Oil Film in Super-High Speed Hybrid Journal Bearing Based on FLUENT

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.69-70.296 ◽

2009 ◽

Vol 69-70 ◽

pp. 296-300 ◽

Cited By ~ 1

Author(s):

Shi Chao Xiu ◽

Peng Bo Xiu ◽

Shi Qiang Gao

Keyword(s):

Temperature Field ◽

High Speed ◽

Journal Bearing ◽

Flow State ◽

Oil Viscosity ◽

Oil Film ◽

High Speed Grinding ◽

Higher Temperature ◽

Grinding Machine ◽

Geometrical Field

The hybrid journal bearing with the high rigidity and rotation accuracy has been used in super-high speed grinding machine in some cases. But the main shortcoming of hybrid journal bearing is the higher temperature rise in the oil film when bearing works, which can lower the bearing capacity and cause the bearing failure due to the drop of oil viscosity and the larger thermal deformation. Fluent is a special CFD soft to simulate and analyze the flow and the heat exchange of liquid in the complex geometrical field. In this paper, the simulations of the temperature field of the oil film in the super-high speed hybrid journal bearing were performed by Fluent based on the mathematical models. The simulation results can not only forecast the flow state and the thermal properties of the bearing oil, but also find the design limitation of the bearing for the more improvement of the bearing design.

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