Results 31 to 40 of about 258,969 (302)
Case Studies in Thermal EngineeringThermal errors induced by inefficient cooling in rotary tables of five-axis machine tools significantly degrade machining accuracy and increase energy consumption, posing a critical challenge for high-precision and sustainable manufacturing.
Tze-Yin Lin, Kun-Yin Li
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Machines, 2023 This study constructs a prediction model of thermal deformation with an artificial neural network and implements the real-time error compensation for a three-axis vertical CNC milling machine in cutting processes to improve the thermal error of the ...
Dang-Khoa Nguyen +2 more
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Error compensation for thermally induced errors on a machine tool [PDF]
, 1996 Heat flow from internal and external sources and the environment create machine deformations, resulting in positioning errors between the tool and workpiece. There is no industrially accepted method for thermal error compensation. A simple model has been selected that linearly relates discrete temperature measurements to the deflection.
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Compensation of Static and Transient Thermal Errors on CMMs
CIRP Annals, 2001 Abstract Using CMMs under normal workshop conditions necessitates to take into account the influence of environmental temperature on the machine structure. Non-standardised environmental conditions result in temperature dependent measurement errors.
Kruth, Jean-Pierre +2 more
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Experimental and numerical investigation of an air-to-water heat pipe-based heat exchanger [PDF]
, 2015 An experimental and analytical investigation was conducted on an air-to-water heat exchanger equipped with six wickless heat pipes (thermosyphons) charged with water as the working fluid.
Mroue, H +3 more
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Investigation of Tool Cooling and Heat Transfer Using Computational Fluid Dynamics Simulations
Journal of Machine EngineeringThermal errors remain one of the biggest challenges for the precision of cutting machine tools. Aside from optimizations in the machine tool design and behaviour, optimal cutting process parameters and targeted usage of cutting fluid or alternative ...
Christian Naumann +7 more
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ThermalSim: A Thermal Simulator for Error Analysis
CoRR, 2017 Researchers have extensively explored predictive control strategies for controlling heating, ventilation, and air conditioning (HVAC) units in commercial buildings. Predictive control strategies, however, critically rely on weather and occupancy forecasts.
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Error analysis of the thermal cell for soil thermal conductivity measurement [PDF]
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 2017 Soil thermal conductivity is an important factor in the design of energy foundations and other ground heat exchanger systems. Laboratory tests in a thermal cell are often used to determine the thermal conductivity of soil specimens. Two interpretation methods have been suggested.
Low, JE, Loveridge, FA, Powrie, W
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FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
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MechanicsAccording to the literature analysis, the thermal error of CNC machine tools is the main factor affecting its processing accuracy, accounting for about 40% -70% ; This paper discusses the structure assembly of Aspherical Grinder, which is the research carrier of thermal error analysis of NC machine tool, and analyzes the characteristics and concrete ...
Bo YU, Xiao-peng CHANG, Lei YU
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