Results 61 to 70 of about 1,892,423 (234)

Research on optimization of temperature sensitive points of machine tool thermal error based on independent variable selection criteria

Scientific Reports
In order to improve the prediction accuracy and robustness of the machine tool thermal error model, a method to select temperature sensitive points of the machine tool thermal error model based on independent variable selection criteria is proposed ...
Huadong Li, Jingjun Liu, Yang Li
doaj   +1 more source

Thermal Error Modeling and Compensation for an INDEX-G200 Turning Center

, 2011
The purpose of this research is to fulfill thermal error modeling and compensation of an INDEX-G200 turning center. This paper presents the whole process of thermal error modeling and compensation by using back propagation neural networks.
Lei He, Qian Jian Guo, Guang Ming Zhu
core   +1 more source

Application of GNNMCI(1, N) to environmental thermal error modelling of CNC machine tools

, 2013
Thermal errors are often quoted as being the largest contributor to inaccuracy of CNC machine tools, but they can be effectively reduced using error compensation.
Longstaff, Andrew P., Fletcher, Simon, Abdulshahed, Ali, Myers, Alan   +3 more
core  

Application of Autoregressive Distributed Lag (ADL) Model to Thermal Error Modeling on NC Machine Tools

, 2011
Thermal error modeling method is an important field of thermal error compensation on NC machine tools, it is also a key for improving the machining accuracy of machine tools.
Xin Wang, Yan Yan, En Ming Miao, Ye Tai Fei   +3 more
core   +1 more source

Thermal Error Modeling of the CNC Machine Tool Based on Data Fusion Method of Kalman Filter [PDF]

, 2017
This paper presents a modeling methodology for the thermal error of machine tool. The temperatures predicted by modified lumped-mass method and the temperatures measured by sensors are fused by the data fusion method of Kalman filter.
Haitong Wang, Tiemin Li, Yonglin Cai, Heng Wang   +3 more
core   +1 more source

The significance of air pockets for modelling thermal errors of machine tools

, 2013
It is well known, especially with the prevalence of compensation for geometric errors, that thermal error represents the most significant proportion of the total volumetric error of the machine tool. Thermal error in machine tools originates from changes
Longstaff, Andrew P., Mian, Naeem, Mian, Naeem S., Fletcher, Simon, Longstaff, Andrew, Myers, Alan   +5 more
core  

Temperature Variables Selection for Thermal Error Modeling of Heavy-Duty CNC Milling-Boring Machine Tools

, 2011
One of the difficult issues in thermal error modeling is to select appropriate temperature variables. In this paper, two selection strategies are introduced to overcome this difficulty.
L. Wang, Y.X. Yao, Gang Wei Cui, D. Gao
core   +1 more source

A posteriori estimation of modelling error for a building thermal model

, 2015
In the past decade, efficient energy use for civil buildings receives big attention, especially through optimal control which is meant to minimize energy consumption and maintain occupant comfort. Different thermal models can be considered in both theoretical and practical use.
Li, Xiaodong, Nassiopoulos, Alexandre, Waeytens, Julien, Chakir, Rachida   +3 more
openaire   +1 more source

Application of PPR to Thermal Error Modeling of an INDEX-G200 Turning Center

, 2011
Thermal errors are the major contributor to the dimensional errors of a workpiece in precision machining. Error compensation technique is a cost-effective way to reduce thermal errors.
Lei He, Qian Jian Guo, Guang Ming Zhu
core   +1 more source

Machine structure simulation using FEA and optimised thermal parameters

, 2015
Continuous usage of machine tools during manufacturing processes causes heat generation in the moving elements, resulting in distortion of the machine tool structure.
Longstaff, Andrew P., Abuaniza, Ayman, Fletcher, Simon, Mian, Naeem S.   +3 more
core