Results 261 to 270 of about 258,969 (302)

Thermal error of a hydrostatic spindle

Precision Engineering, 2011
This paper proposes a thermo-mechanical error model of a hydrostatic spindle for a high precision machine tool. By predicting the variation of motion error induced by thermal effects on a machine worktable during machining, this model allows deeper insights into the underlying mechanisms that result in evolutions of the spindle accuracy. The heat power
Dongju Chen, Marc Bonis, Feihu Zhang, Shen Dong   +3 more
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Errors in Thermal Measurements

Nature, 1932
IN some recent investigations on adsorption1 it seems to have been established that erroneous conclusions have been reached on account of errors unsuspected by the experimenters and arising from the time lag of thermometric apparatus. Workers with experience in thermal measurements are well aware of the possibility of such errors, and in particular the
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Error of measurement of thermal energy

Measurement Techniques, 1998
Analytical expressions are obtained for the error of measurement of thermal energy. It is shown that pairs of temperature transducers and flowmeters must be used to satisfy the “Regulations on the Metering of Thermal Energy and Flows of Heart Carriers”.
A. A. Vakulin, A. V. Shavlov
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Error of measurement of thermal power

Measurement Techniques, 1995
Formulas for calculating the errors of heat output measurement are refined on the basis of the relation between the partial errors of measurement of the mass flow of a heat-transfer agent and its thermal flux. Examples are given for steam and hot water.
I. M. Shenbrot, B. M. Belyaev
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Error analysis of thermal equation with moving ends

Mathematics and Computers in Simulation, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mauro Antonio Rincon, M. O. Lacerda
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Thermal-Awareness in a Soft Error Tolerant Architecture

2019 Design, Automation & Test in Europe Conference & Exhibition (DATE), 2019
It is crucial to provide soft error reliability in a power-efficient manner such that the maximum chip temperature remains within the safe operating limits. Different execution phases of an application have diverse performance, power, temperature and vulnerability behavior that can be leveraged to fulfill the resiliency requirements within the allowed ...
Sajjad Hussain, Muhammad Shafique 0001, Jörg Henkel   +2 more
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A Combined Error Model for Thermal Error Compensation of Machine Tools

Advanced Materials Research, 2013
In 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
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Thermal error analysis and error prediction modeling on a machine tool

2008 IEEE International Conference on Industrial Engineering and Engineering Management, 2008
Thermal 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, null Dai Shijie, null Zhu Yonglu, null Wu Xinye, null Guo Yinbiao   +4 more
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Recent Patents of Thermal Error Modeling and Thermal Error Prediction of CNC Machine Tool Spindle

Recent Patents on Engineering
: With the development of machine tools to high precision and high automation, thermal error has become the key reason to hinder the improvement of thermal stability of machine tools. The spindle electrothermal error is an important factor affecting the machining accuracy of highspeed CNC machine tools.
Zhaolong Li, Benchao Sun
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Thermal Error Modelling in CNC Machines

Applied Mechanics and Materials, 2014
Latest trend in increasing the performance characteristics of precision machines is reducing error in machines. Today research is focused on Machine tool accuracy. The effect of thermal error contributes to major part of 70% of volumetric error. The present study aims to establish a new compensation method for CNC Turning centre.
R. Jamuna, U. Natarajan
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