Results 171 to 180 of about 3,993 (219)

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.
Yiqiang Wang, Yazhou Jia, Jian Qiu, Guixiang Shen   +3 more
exaly   +2 more sources

Prospects for CNC Machine Tools

Russian Engineering Research, 2019
The main global trends in the production of high-technology CNC systems are identified. Topics analyzed include system architecture; the use of high-speed industrial networks based on fieldbus technologies; the potential of multiple-channel and multiple-axis machining; spline interpolation in the machining of complex contours and free surfaces; and ...
L. I. Martinova, G. M. Martinov
openaire   +1 more source

The Application of PLC to CNC Machine Tools Development

2011 Second International Conference on Digital Manufacturing & Automation, 2011
Introduce a CNC system for nonstandard machine tool based on PLC and programmable multi-axis controller, which is appLied to CNC machine. Comparing with traditional CNC system, the proposed design has not only simpLified machine tool structure and control system, but also make user's program simpLification.
Dongkai Qiao, Xiangyu Yang, Jinxin Jia
openaire   +1 more source

An Adaptive CNC System of a Milling Machine Tool

IFAC Proceedings Volumes, 1977
Abstract An adaptive CNC(computer numerical control) system of a milling machine tool using a precise tool wear rate model is presented. In the system, the bending moments on the spindle are sensed and used for computing the fundamental parameters of cutting conditions such as work material hardness, cutter sharpness, and others.
T. Watanabe, S. Iwai, Y. Nawata
openaire   +1 more source

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

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, Chun Li He, Guang Jun Chen   +2 more
openaire   +1 more source

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

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

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