Results 11 to 20 of about 10,460,767 (272)
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 ...
Yu Bo, Xiao-peng Chang, Lei Yu
semanticscholar +2 more sources
Handling Ambient Temperature Changes in Correlative Thermal Error Compensation [PDF]
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 +3 more sources
A particle swarm optimisation-based Grey prediction model for thermal error compensation on CNC machine tools [PDF]
, 2015 Thermal errors can have a significant effect on CNC machine tool accuracy. The thermal error compensation system has become a cost-effective method of improving machine tool accuracy in recent years.
Longstaff, Andrew P. +2 more
core +3 more sources
Efficient offline thermal error modelling strategy for accurate thermal behaviour assessment of the machine tool. [PDF]
, 2009 Positional accuracy of the machine tool is affected by the instabilities caused by the thermal gradients produced from the internal and external heat sources.
Longstaff, Andrew P. +4 more
core +4 more sources
A novel approach for ANFIS modelling based on Grey system theory for thermal error compensation [PDF]
, 2014 The fast and accurate modelling of thermal errors in machining is an important aspect for the implementation of thermal error compensation. This paper presents a novel modelling approach for thermal error compensation on CNC machine tools.
Fletcher, Simon +2 more
core +5 more sources
Thermal Error Analysis of Five-Axis Machine Tools Based on Five-Point Test Method
Lubricants, 2022 The accuracy of five-axis machine tools is a key performance indicator. Among the various error sources of high precision five-axis machine tools, thermal and geometric errors occupy the majority.
Yu Li +3 more
doaj +1 more source
Journal of Marine Science and Engineering, 2022 Recently, with the emergence of maritime autonomous surface ships (MASS), ensuring seaworthiness has increased with the operation of MASS. Ship stability is important for safety, and technical methods for controlling a ship’s motion are required to ...
Hee-Jin Lee, Deuk-Jin Park
doaj +1 more source
The International Journal of Advanced Manufacturing Technology, 2023 Spindle thermal error is a major factor affecting the machining accuracy of machine tools. The time-consuming experiments required to model the thermal error of each machine tool spindle makes exhaustive studies difficult.
Jia-Cheng Sun +6 more
semanticscholar +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
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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