Results 161 to 170 of about 1,892,423 (234)
Some of the next articles are maybe not open access.
A Combined Error Model for Thermal Error Compensation of Machine Tools
Advanced Materials Research, 2013In this paper, a combined error model for thermal error compensation of machine tools is presented. Through the analysis of thermal error data of machine spindle at different temperatures, the error variation law is obtained. Experiments on the axial directional spindle deformation on a CNC machine center are conducted to build and validate the ...
Wei Wang, Jian Guo Yang
openaire +1 more source
Modeling of thermal error electric spindle based on KELM ameliorated by snake optimization
Case Studies in Thermal Engineering, 2022 In this article, to heighten the accuracy of thermal error forecast model of motorized spindle, a thermal error modeling method of kernel extreme learning machine based on snake optimization is advanced.
Ye Dai, Zhaolong Li, Qinghai Wang
exaly +2 more sources
Thermal error analysis and error prediction modeling on a machine tool
2008 IEEE International Conference on Industrial Engineering and Engineering Management, 2008Thermal errors are the largest contributor to the dimensional errors of a workpiece in precision machining. It is very significant to study how to accurately simulate the spindle thermal errors. In this paper a novel concept of thermal error modes analysis is proposed to develop a better understanding of the thermal deformation on a machine tool.
null Zhu Rui +4 more
openaire +1 more source
Measurement, modeling and compensation of thermal error for machine tools
2015 IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2015Thermal error accounts for a large proportion in the error sources of the machine tool. In this paper, the thermal error of a boring and milling machine tool is modeled with the output error model of timing analysis. In order to improve the prediction accuracy, Firefly algorithm is used to optimize the number of groups and the orders of output error ...
Haitong Wang +3 more
openaire +1 more source
Thermal Errors Simulation and Modeling of Motorized Spindle
Advanced Materials Research, 2010Thermal errors of motorized spindle are of great importance to affect final machining precision of CNC machine tool. Thermal characteristics simulation analysis of motorized spindle is realized by ANSYS; thermal errors test measurement is completed based on 5-point method; and prediction models of thermal errors are constructed by multiple linear ...
Liang Yu Cui +4 more
openaire +1 more source
Thermally Induced Errors Modeling and Control for PCMA
Chinese Optics Letters, 2014We develop the kinematic model of portable coordinate measuring arm (PCMA) based on the research on its mechanical characteristics and working principle, and present a comprehensive thermally-induced error correction model for PCMA. Based on the model and nominal data provided by a highly accurate coordinate measuring machine, the technique for ...
Wanli Liu Wanli Liu +2 more
openaire +1 more source
Thermal Error Modeling of Precision Positioning Stage
Advanced Materials Research, 2013As the thermal deformation significantly impacts the accuracy of precision positioning stage, it is necessary to realize the thermal error. The thermal deformation of the positioning stage is simulated by the finite element analysis. The relationship between the temperature variation and thermal error is fitted third-order polynomial function whose ...
Jing Shu Wang, Ming Chi Feng
openaire +1 more source
Thermal Error Modeling of a CNC Machine Tool
Applied Mechanics and Materials, 2013The purpose of this research is to improve the machining accuracy of a CNC machine tool through thermal error modeling and compensation. In this paper, a thermal error model based on back propagation networks (BPN) is presented, and the compensation is fulfilled.
Chong Zhi Mao, Qian Jian Guo
openaire +1 more source
Thermal Error Modeling of Rotary Axis Based on Convolutional Neural Network
, 2021Rotary axes are the key components for five-axis computerized numerical control machines, while their motions are dramatically influenced by thermal issues. To precisely model the thermal error of rotary axis, a convolutional neural network (CNN) model
Cheng Wu, Sitong Xiang, W. Xiang
semanticscholar +1 more source
Dynamic modeling for thermal error in motorized spindles
The International Journal of Advanced Manufacturing Technology, 2014This paper proposes a new modeling methodology to predict thermal error in motorized spindles. The dynamic model predicts thermal errors that are caused by deformation in the motorized spindle structure due to heat flow from internal sources. These thermally induced errors become more serious and dominate the total error when it comes to high speed and
Baomin Wang +3 more
openaire +1 more source