Materials for Machine Tool Structures

1980 ◽  
pp. 429-434 ◽  
Author(s):  
G. H. Morgan ◽  
P. A. McKeown ◽  
H. J. Renker
Keyword(s):  
Machine Tool ◽  
Machine Tool Structures

scholarly journals Influences of Collared Ribs and Core-Holes on the Static Stiffness of Cylindrical Column : Study on the C.A.D for Machine Tool Structures, Part 1

1975 ◽  
Vol 18 (121) ◽  
pp. 744-753 ◽  
Author(s):  
Mitsuyoshi KOIZUMI ◽  
Yoshimi ITO ◽  
Masami MASUKO
Keyword(s):  
Machine Tool ◽  
Static Stiffness ◽  
Column Study ◽  
Cylindrical Column ◽  
Machine Tool Structures

Exakte posenabhängige Strukurmodelle*/Accurate virtual machine tool structures - Online-identification of the general model of a lightweight machine tool structure with pose-dependent dynamic behavior

2017 ◽  
Vol 107 (05) ◽  
pp. 323-328
Author(s):  
S. Apprich ◽  
F. Wulle ◽  
A. Prof. Pott ◽  
A. Prof. Verl
Keyword(s):  
Machine Tool ◽  
Least Squares ◽  
Dynamic Behavior ◽  
Natural Frequencies ◽  
Recursive Least Squares ◽  
Machine Model ◽  
Online Identification ◽  
Working Space ◽  
Machine Tool Structure ◽  
Machine Tool Structures

Serielle Werkzeugmaschinenstrukturen weisen ein posenabhängiges, dynamisches Verhalten auf, wobei die Eigenfrequenzen um mehrere Hertz im Arbeitsraum variieren können. Die genaue Kenntnis dieses Verhaltens gestattet eine verbesserte Regelung der Strukturen. Ein generelles parametrisches Maschinenmodell, dessen Parameter online durch einen Recursive-Least-Squares-Algorithmus an das reale Maschinenverhalten angepasst werden, stellt Informationen über dieses Maschinenverhalten bereit.   Serial machine tool structures feature a pose-dependent dynamic behavior with natural frequencies varying by serveral hertz within the working space. The accurate knowledge of this behavior allows an improved control of the structures. A general parametric machine model, whose parameters are adapted online to the actual machine tool behavior by a Recursive Least Squares algorithm, provides information about the pose-dependent dynamic behavior.

scholarly journals Steel-concrete Composite Material in CNC Machine Tool Structures

2016 ◽  
Vol 20 (2) ◽  
pp. 56-60
Author(s):  
Dominik Hermansky ◽  
Jiri Marek
Keyword(s):  
Composite Material ◽  
Machine Tool ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Machine Tool Structures

Modal Analysis of Machine Tool Structures Based on Experimental Data

1983 ◽  
Vol 105 (4) ◽  
pp. 282-287 ◽  
Author(s):  
K. F. Eman ◽  
K. J. Kim
Keyword(s):  
Transfer Function ◽  
Machine Tool ◽  
Modal Analysis ◽  
Moving Average ◽  
Parametric Representation ◽  
Modeling Procedure ◽  
Fitting Procedure ◽  
Machine Tool Structures ◽  
Computer Based ◽  
Three Degree Of Freedom

The basic problem in modal analysis of machine tool structures is the extraction of modal parameters from the measured transfer function data. Conventionally this task is performed in two steps. The transfer function is determined using a Digital Fourier Analyzer followed by a suitable curve fitting procedure. In order to avoid the inherent problems associated with these procedures a new approach for modal analysis is proposed in this paper. Anticipating the stochastic nature of the systems excitation and response Modified Autoregressive Moving Average Vector models (MARMAV) are proposed. The modeling procedure yields a parametric representation of the structural behavior allowing the extraction of the modal information in one step, directly, rather than in two as in the conventional approaches. The mathematical foundation for the approach is given along with its application to a simulated three-degree-of-freedom system and a knee type milling machine. The newly proposed procedure is commensurate to the existing ones in light of the computational efforts involved; however, it eliminates the subjective judgment of the analyst since the modeling procedure is based on rigorous statistical adequacy checks. Finally, the proposed approach is amenable for implementation in a computer-based machine tool structural dynamics analyzer.

Evaluation of Advanced Cementitious Composites for Machine-Tool Structures

CIRP Annals ◽  
1988 ◽  
Vol 37 (1) ◽  
pp. 373-376 ◽  
Author(s):  
M. Rahman ◽  
M.A. Mansur ◽  
K.H. Chua
Keyword(s):  
Machine Tool ◽  
Cementitious Composites ◽  
Machine Tool Structures

scholarly journals Non-conventional Materials for Machine Tool Structures.

2001 ◽  
Vol 44 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Mustafizur RAHMAN ◽  
Abul MANSUR ◽  
Bazlul KARIM
Keyword(s):  
Machine Tool ◽  
Machine Tool Structures
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