Malfunction Analysis of the NC Machine Tool and its Vibration Model

The means of classification of the NC machine tool malfunctions is the key basis on detecting malfunctions and processing malfunctions` s signal. By defining malfunction mechanism and malfunction mode, a series of new classifications are presented. According to malfunction mechanism, mechanical malfunction are damage malfunction, lubrication malfunction, and fit malfunction. According to malfunction mode, the noise malfunction can be classified as vibration malfunction mode, the heating malfunction can be classified as heating malfunction mode, and the bad motion malfunction can be classified as deformation malfunction mode. Conclusion is that damage malfunction of gear and bearing malfunction is the most frequent malfunction whose performance formation is noise. Another conclusion is that tooth surface fatigue is the familiar malfunction, and bearing malfunction is mainly caused by surface peeling. Based on these conclusions, the vibration model of the mechanical failure is established, which lays a foundation for dealing with the follow-up signal.

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169 Computer aided design of NC machine tool main spindle drives

Control Engineering Practice ◽

10.1016/0967-0661(94)90751-x ◽

1994 ◽

Vol 2 (1) ◽

pp. 174

Keyword(s):

Machine Tool ◽

Computer Aided Design ◽

Nc Machine Tool ◽

Computer Aided ◽

Nc Machine ◽

Aided Design ◽

Main Spindle

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Model Research on Special Metal Cutting NC Machine Tool

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.10-12.806 ◽

2007 ◽

Vol 10-12 ◽

pp. 806-811

Author(s):

Tong Zhao ◽

P.Q. Ye ◽

H. Zhang ◽

X.K. Wang

Keyword(s):

Machine Tool ◽

Metal Cutting ◽

Relation Module ◽

Nc Machine Tool ◽

Model Research ◽

Unit Model ◽

Proposed Model ◽

Control Research ◽

Function Unit ◽

Nc Machine

In this paper the model of special metal cutting NC machine Tool is presented, which consists of a base module, an overall control module, particular functional modules as well as a relation module. Each module involved in aforementioned model will be composed by software, hardware and mechanical parts, so as to combine the convergence of the ideas of modularization and mechanical-electrical integration into current understanding of special NC machine tool through the proposed model. Specially, the relation module is introduced to deal with the linking among all the other modules. The presented model aims to broaden the perspective of machine designers intending to increase the efficiency in machine design. By giving the so-called function unit model a novel modeling approach is delivered to carry out control research of special metal cutting NC machine, which is followed by the formalization description method presented as a possible abstraction methodology towards the efficient description and identification of special metal cutting NC machine tool.

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Research of high performance AC servo feed system for NC machine tool

2010 8th World Congress on Intelligent Control and Automation ◽

10.1109/wcica.2010.5554128 ◽

2010 ◽

Cited By ~ 2

Author(s):

Tao Zhao ◽

Mulan Wang ◽

Chao Pan ◽

Youbin Wang

Keyword(s):

Machine Tool ◽

High Performance ◽

Feed System ◽

Nc Machine Tool ◽

Ac Servo ◽

Nc Machine

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The Coupling Characteristic of HSK Tool-Holder/Spindle Interface for High-Speed NC Machine Tool

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.590.121 ◽

2014 ◽

Vol 590 ◽

pp. 121-125 ◽

Cited By ~ 1

Author(s):

Wen Kai Jie ◽

Jian Chen ◽

Deng Sheng Zheng ◽

Gui Cheng Wang

Keyword(s):

Machine Tool ◽

Rotational Speed ◽

High Speed ◽

Nonlinear Finite Element Method ◽

High Rotational Speed ◽

Tool Holder ◽

Nc Machine Tool ◽

Machine Tool Accuracy ◽

Nc Machine ◽

Coupling Characteristic

The coupling characteristic of the tool-holder/spindle interface in high speed NC machine has significant influence on machine tool accuracy and process stability. With the example of HSK-E63, based on nonlinear finite element method (FEM), the coupling characteristic of the tool-holder/spindle interface under high rotational speed was investigated, the influence of interference, clamping force and rotational speed on the contact stress and the sectional area of clearance were discussed in detail. The results can be used as theoretical consideration to design and optimize the high speed tool-holder/spindle interface.

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