scholarly journals Development of an educational 3-axis CNC machine tool for rapid prototyping with two translational and one rotary axis

Tehnika ◽  
2020 ◽  
Vol 75 (6) ◽  
pp. 725-732
Author(s):  
Nikola Vorkapić ◽  
Saša Živanović ◽  
Zoran Dimić
Keyword(s):  
Rapid Prototyping ◽  
Machine Tool ◽  
Virtual Machine ◽  
Machine Design ◽  
Programming System ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Rotary Axis ◽  
System A ◽  
Cad Cam

The paper shows the development of a 3-axis CNC machine tool for rapid prototyping by subtracting materials, with two translational and one rotating axis, whose control is based on the LinuxCNC system, with an integrated virtual machine as a digital twin. The concepts of machines with one rotary axis were analyzed and the concept of a machine for realization was adopted, which is completely configured in a CAD/CAM environment. For successful verification of the programming system, a virtual machine has been configured in the CAD/CAM system, as well as in Vericut. The final validation of the machine design was achieved by its trial work on characteristic examples.

Fault diagnosis of a machine tool rotary axis based on a motor current test and the ensemble empirical mode decomposition method

2011 ◽  
Vol 225 (5) ◽  
pp. 1121-1129 ◽  
Author(s):  
F Zhao ◽  
X Mei ◽  
T Tao ◽  
G Jiang ◽  
Y Zhou
Keyword(s):  
Machine Tool ◽  
Ensemble Empirical Mode Decomposition ◽  
Cnc Machine Tool ◽  
Current Signal ◽  
Servo Motor ◽  
Cnc Machine ◽  
Rotary Axis ◽  
Mode Decomposition ◽  
Empirical Mode Decomposition Method ◽  
Fault State

Faults frequently occur in the rotary axis of machine tools due to their complicated drive mechanism. The machining accuracy and life time span will decline when there is a fault in the machine tool. Hence, it is necessary to develop a method to detect faults efficiently. In this article, a fault diagnosis method of the rotary axis of a computer numerical control (CNC) machine tool based on servo motor current analysis is proposed. A two-degree-of-freedom dynamic model of worm and worm gear is used in this study to analyse the relationship between the current signal and the fault of the rotary axis of the CNC machine tool. The ensemble empirical mode decomposition method is used as a self-adaptive low-pass filter to extract valuable information from the current signal. A number of experiments are carried out on a CNC machine tool which is in a fault state to validate the presented method. The result shows that the current of the servo motor contains enough information to detect the fault state of the feed axis of the machine tool. After being calculated by the dynamic model, the current signal clearly reveals the fluctuation of stiffness of the teeth which is caused by the fault of the rotary axis.

scholarly journals Configuring of 3-axis vertical CNC Machine for Rapid Prototyping with two Translatory and one Rotary Axes

2020 ◽  
Vol 45 (1) ◽  
pp. 1-9
Author(s):  
Nikola Vorkapić ◽  
Saša Živanović ◽  
Nikola Slavković ◽  
Zoran Dimić ◽  
Branko Kokotović
Keyword(s):  
Rapid Prototyping ◽  
Virtual Machine ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Software Environment ◽  
Machine Model ◽  
Rotary Axes ◽  
Cylindrical Coordinate ◽  
G Code ◽  
And Control

This paper describes the configuration of a 3-axis vertical CNC machine tool for rapid prototyping with one rotary and two translational axes. The machine works in a polar-cylindrical coordinate system. The structure of the machine is C’OXZ. The virtual machine model is configured in the PTC Creo software environment. After configuring the virtual machine, the simulation of the CLFbased was performed in the mentioned software environments, and then the verification according to the G-code program in the Vericut software environment was performed. Programming and control of the configured prototype machine are realized in the LinuxCNC software environment, which is based on the PC platform. Also, in this paper, digital twin of machine realized in a python software environment is shown. The presented results show the proper functioning of the whole system.

Supervision and Control Architecture for CNC Machine TOOL Using Rapid Prototyping

2015 ◽  
Vol 9 (3) ◽  
pp. 212
Author(s):  
João Mauricio Rosario ◽  
Daniel Kubiak ◽  
Edgard Oliveira ◽  
Almiro Franco Silveira ◽  
Leonimer F. Melo
Keyword(s):  
Rapid Prototyping ◽  
Machine Tool ◽  
Control Architecture ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
And Control

Researches Regarding the Use of Fuzzy Controllers within CNC Feed Drives

2015 ◽  
Vol 772 ◽  
pp. 229-234
Author(s):  
Radu Eugen Breaz ◽  
Octavian Bologa
Keyword(s):  
Machine Tool ◽  
Fuzzy Controller ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Fuzzy Controllers ◽  
Feed Drive ◽  
Feed Drives ◽  
Simulation Based ◽  
Position Controller ◽  
Dc Servomotor

This paper presents some simulation based upon a dynamic model of a feed-drive within the structure of a CNC machine tool. A DC servomotor was considered as actuation device for the feed drive. For a given set of parameters for the position controller, two fuzzy types of fuzzy controllers were tested by means of simulation. The first fuzzy controller was a proportional one, with one input and one output, while the second one was a two variables one, with two inputs and one outputp.

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