Results 191 to 200 of about 5,279,309 (237)

The Application of ANFIS Prediction Models for Thermal Error Compensation on CNC Machine Tools [PDF]

open access: yesApplied Soft Computing Journal, 2015
Thermal errors can have significant effects on CNC machine tool accuracy. The errors come from thermal deformations of the machine elements caused by heat sources within the machine structure or from ambient temperature change.
Simon Fletcher   +2 more
exaly   +2 more sources

INTERPOLATOR FEATURES FOR CNC SYSTEMS OF MACHINE TOOLS

IFAC Proceedings Volumes, 1980
Abstract Most interpolators used in CNC systems of machine tools are based on the DDA principle. Most of such devices provide linear and circular interpolation with constant path velocity. The use of microprocessors in recent CNC systems has rendered it possible to implement more sophisticated interpolation features, such as modified path generation ...
openaire   +1 more source

Parametric Programming of CNC Machine Tools

Applied Mechanics and Materials, 2013
CNC machine tools are increasingly often used in industry, and the development of the methods of their programming is also proceeding. Modern multipurpose multi-axial machine tools are programmed using special CAD/CAM software programs. Universal special programs for controlling CNC machine tools can, however, be generated in programs written in high ...
Tadeusz Nieszporek, Andrzej Piotrowski
openaire   +1 more source

CNC Machine Tools

2009
The introduction of CNC machines has radically changed the manufacturing industry. Curves are as easy to cut as straight lines, complex 3-D structures are relatively easy to produce, and the number of machining steps that required human action has dramatically reduced.
openaire   +1 more source

Application of Tool Compensation in CNC Machining

Materials Science Forum, 2014
Tool compensation determines the machining precision and quality . There are tool length compensation,tool radius compensation and corner radius compensation in CNC system .The parameters of these compensation are all static.The purpose of this study was that the machining precision and quality were improved by changing the parameters of tool ...
Lian Jun Zhang   +2 more
openaire   +1 more source

Load Spectra of CNC Machine Tools

Quality and Reliability Engineering International, 2000
Load spectra of CNC machine tools are described in this paper; 112 CNC machine tools have been traced for 3 years. Data including machining parameters and conditions, drawings and NC programs of parts, process cards and specifications of each individual CNC machine tool are gathered. A database containing this information is designed.
Yazhou Jia, Yiqiang Wang
exaly   +2 more sources

Reliability analysis of CNC machine tools

Reliability Engineering, 1982
A reliability and maintainability study of computer control (CNC) machine tools is described. For this analysis field failure data collected over a period of three years on approximately 35 CNC machine tools during their warranty period were analysed. In order to apply quantitative reliability methods, a coding system was devised to code failure data ...
A.Z. Keller, A.R.R. Kamath, U.D. Perera
openaire   +1 more source

Geometric accuracy of CNC machine tools

Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014, 2014
The present article is dedicated to the identification and interpretation of geometric errors of CNC machine tools. Identification of geometric errors plays a large role in the construction of the so-called “Error maps”. These maps can be used to describe the behaviour of the machine in the workspace without load or under conditions of finishing ...
Michal Holub, Josef Knobloch
openaire   +1 more source

Monitoring the Condition of CNC Machine Tools

Russian Engineering Research, 2020
Maintenance of CNC machine tools in an operative condition is considered. Attention focuses on the appropriate monitoring and control systems. The structure of the required control system and the corresponding control functions are presented. The starting point is to mount a module containing sensors of various types, including vibroacoustic sensors ...
A. K. Tugengol’d   +4 more
openaire   +1 more source

Dynamic calibration of CNC machine tools

International Journal of Machine Tools and Manufacture, 1997
Machine calibration has become an important tool for assessing and maintaining machine accuracy, and for providing a measure of production quality. The calibration techniques supported by the calibration standards and the available metrology technology use static measurement cycles [BS3800, Part 2 (1991); ISO 230-2, Part 2 (1988)].
S.R. Poslethwaite, D.G. Ford, D. Morton
openaire   +1 more source

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