Results 11 to 20 of about 258,969 (302)
Handling Ambient Temperature Changes in Correlative Thermal Error Compensation
Journal of Machine Engineering, 2023 Thermal errors are one of the lead causes for positioning inaccuracies in modern machine tools. These errors are caused by various internal and external heat sources and sinks which shape the machine tool’s temperature field and thus its deformation ...
Christian Naumann +2 more
doaj +2 more sources
A Linear Regression Thermal Displacement Lathe Spindle Model
Energies, 2020 Thermal error is one of the main reasons for the loss of accuracy in lathe machining. In this study, a thermal deformation compensation model is presented that can reduce the influence of spindle thermal error on machining accuracy.
Chih-Jer Lin +5 more
doaj +2 more sources
Journal of Machine Engineering, 2022 The compensation of thermal errors in machine tools is one of the major challenges in ensuring positioning accuracy during cutting operations. There are numerous methods for both the model-based estimation of the thermal tool center point (TCP ...
Christian Naumann +4 more
doaj +2 more sources
Research progress of machine tool thermal error modeling technology
Journal of Hebei University of Science and Technology, 2015 During cutting, machine tools are influenced by different heat sources, which induces machine thermal deformation, deviation and thermal error. In different machine errors, thermal error accounts for 40%~70% of total machine errors, which is the main ...
Qianjian GUO, Hongmei WANG, Aijun LI
doaj +2 more sources
Minimum-error discrimination of thermal states [PDF]
Physical Review A, 2021 We study several variations of the question of minimum-error discrimination of thermal states. Besides of providing the optimal values for the probability of error, we also characterize the optimal measurements. For the case of a fixed Hamiltonian, we show that for a general discrimination problem the optimal measurement is the measurement in the ...
Seyed Arash Ghoreishi, Mario Ziman
openaire +2 more sources
Micromachines, 2021 Hydrostatic guideways are widely applied in ultra-precision machine tools, and motion errors undermine the machining accuracy. Among all the influence factors, the thermal effect distributes most to motion errors.
Pengli Lei +4 more
doaj +1 more source
Thermal error modelling for real-time error compensation [PDF]
The International Journal of Advanced Manufacturing Technology, 1996 A modelling strategy for the prediction of both the scalar and the position-dependent thermal error components is presented. Two types of empirical modelling method based on the multiple regression analysis (MRA) and the artificial neural network (ANN) have been proposed for the reaLtime prediction of thermal errors with multiple temperature ...
Chen, J. S., Yuan, J., Ni, Jun
openaire +2 more sources
Digital Twin-Driven Thermal Error Prediction for CNC Machine Tool Spindle
Lubricants, 2023 Traditional methods for predicting thermal error ignore the correlation between physical world data and virtual world data, leading to the low prediction accuracy of thermal errors and affecting the normal processing of the CNC machine tool (CNCMT ...
Quanbo Lu, Dong Zhu, Meng Wang, Mei Li
doaj +1 more source
Machines, 2022 The thermal error of CNC machine tools can be reduced by compensation, where a thermal error model is required to provide compensation values. The thermal error model adaptive update method can correct the thermal error model by supplementing new data ...
Hui Liu +4 more
doaj +1 more source
Machining Accuracy Enhancement of a Machine Tool by a Cooling Channel Design for a Built-in Spindle
Applied Sciences, 2020 This study presents a multiphysics simulation analysis that was performed for the cooling channel of a built-in spindle. The design of experiments (DOE) method was employed to optimize the dimension of the cooling channel, and a practical machining ...
Kun-Ying Li, Win-Jet Luo, Shih-Jie Wei
doaj +1 more source