Results 41 to 50 of about 10,460,767 (272)
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
doaj +1 more source
Thermal error modeling of electric spindle based on particle swarm optimization-SVM neural network
The International Journal of Advanced Manufacturing Technology, 2022 High-speed electric spindle is an important part of computer numerical control (CNC) machining equipment. The thermal displacement generated by the electric spindle during operation is the main reason that affects the machining stability and machining ...
Zhaolong Li +4 more
semanticscholar +1 more source
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
openaire +1 more source
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.
openaire +2 more sources
Spindle Thermal Error Prediction Based on LSTM Deep Learning for a CNC Machine Tool
Applied Sciences, 2021 In the precision processing industry, maintaining the accuracy of machine tools for an extensive period is crucial. Machining accuracy is affected by numerous factors, among which spindle thermal elongation caused by an increase in machine temperature is
Yu-Chi Liu, Kun-Ying Li, Yao-cheng Tsai
semanticscholar +1 more source
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
doaj +1 more source
An Improved Robust Thermal Error Prediction Approach for CNC Machine Tools
Machines, 2022 Thermal errors significantly affect the accurate performance of computer numerical control (CNC) machine tools. In this paper, an improved robust thermal error prediction approach is proposed for CNC machine tools based on the adaptive Least Absolute ...
Hong-Han Ye +3 more
semanticscholar +1 more source
FEBS Letters, EarlyView.Obesity raises blood levels of PAI‐1, a protein linked to metabolic dysfunction‐associated steatotic liver disease in people with obesity. In female mice fed a high‐fat diet, partially lowering PAI‐1 led to smaller subcutaneous fat cells and lower liver cholesterol, without changing body weight or insulin sensitivity.
Claudia E. Ramirez Bustamante +10 more
wiley +1 more source
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.
openaire +2 more sources
Machines, 2021 High-speed motorized spindle heating will produce thermal error, which is an important factor affecting the machining accuracy of machine tools. The thermal error model of high-speed motorized spindles can compensate for thermal error and improve ...
Zhaolong Li +5 more
doaj +1 more source