scholarly journals A Study on Drilling Process Control by Intelligent Machine Tools. (1st Report). Determination of Cutting Condition for Drilling.

2000 ◽  
Vol 66 (8) ◽  
pp. 1270-1274 ◽  
Author(s):  
Tomonori SATI ◽  
Yoshiaki KAKINO ◽  
Atsushi MATSUBARA ◽  
Makoto FUJISHIMA ◽  
Isao NISHIURA ◽  
...  
Keyword(s):  
Process Control ◽  
Machine Tools ◽  
Cutting Condition ◽  
Drilling Process ◽  
Intelligent Machine

DETERMINATION OF THE JUICE EVAPORATION MATHEMATICAL MODELS EFFICIENCY FOR AUTOMATED PROCESS CONTROL SYSTEMS

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
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Keyword(s):  
Process Control ◽  
Mathematical Models ◽  
Control Systems ◽  
Process Control Systems ◽  
Automated Process

Last-Verlagerungsverhalten von Kugelgewindetrieben/Load displacement behavior on ball screws

2020 ◽  
Vol 110 (05) ◽  
pp. 295-298
Author(s):  
Christian Brecher ◽  
Florian Kneer ◽  
Stephan Neus
Keyword(s):  
Machine Tools ◽  
Machining Process ◽  
Ball Screw ◽  
Elastic Displacement ◽  
Technical Paper ◽  
Process Forces ◽  
Displacement Behavior ◽  
Load Displacement ◽  
Machine Structure

Die axiale Steifigkeit von Kugelgewindetrieben ist wesentlich für das Betriebsverhalten von Werkzeugmaschinen. Während der Bearbeitung werden die Prozesskräfte über den Kugelgewindetrieb in die Maschinenstruktur übertragen. Kugelgewindetriebe tragen daher maßgeblich zur Qualität und Produktivität von Werkzeugmaschinen bei. Dieser Beitrag beschreibt eine Methode zur messtechnischen, prüfstandsgebundenen Ermittlung des Last-Verlagerungsverhaltens an Kugelgewindetrieben.   The axial elastic displacement of ball screws are essential for the operating behavior of machine tools. During machining, process forces must be transmitted to the machine structure via the ball screw. Ball screws contribute significantly to the quality and productivity of machine tools. This technical paper describes a methodology for the metrological determination of the load-displacement behavior on ball screws.

Modeling the Vibratory Drilling Process

1999 ◽  
Author(s):  
Stephen A. Batzer ◽  
Alexander M. Gouskov ◽  
Sergey A. Voronov
Keyword(s):  
Rotational Velocity ◽  
Time Lag ◽  
Chip Thickness ◽  
Cutting Conditions ◽  
Model Parameters ◽  
Drilling Process ◽  
Workpiece Material ◽  
Velocity Amplitude ◽  
The Stability

Abstract The dynamic behavior of deep-hole vibratory drilling is analyzed. The mathematical model presented allows the determination of axial tool and workpiece displacements and cutting forces for significant dynamic system behavior such as the entrance of the cutting tool into workpiece material and exit. Model parameters include the actual rigidity of the tool and workpiece, time-varying chip thickness, time lag for chip formation due to tool rotation and possible disengagement of drill cutting edges from the workpiece due to tool and/or workpiece axial vibrations. The main features of this model are its nonlinearity and inclusion of time lag differential equations which require numeric solutions. The specific cutting conditions (feed, tool rotational velocity, amplitude and frequency of forced vibrations) necessary to obtain discontinuous chips and reliable removal are determined. The stability conditions of excited vibrations are also investigated. Calculated bifurcation diagrams make it possible to derive the domain of system parameters along with the determination of optimal cutting conditions.

Globalisation and Openness of Intelligent Machine Tools Design System

2001 ◽  
Vol 34 (2) ◽  
pp. 93-99
Author(s):  
Jerzy Jędrzejewski ◽  
Zbigniew Kowal ◽  
Wojciech Kwaśny ◽  
Wojciech Modrzycki
Keyword(s):  
Machine Tools ◽  
Design System ◽  
Intelligent Machine ◽  
Machine Tools Design
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