2 research outputs found
Development of open platform controller for step-NC compliant CNC system
The Computer Numerical Control (CNC) machines have gone through tremendous
upgrades along the years. However, conventional CNC machines could not find its
place in the new era of machining under the conventional standard of ISO 6983 due to
its limitation in compatibility, language difference and control has caused increase in
terms of repurchase cost, reinstallations, reconfigurations and also training of
operators. Therefore, this study covers the system which has been designed and
developed from outdated and conventional PROLIGHT 1000 Milling CNC machine
from Light Intelitek as the lesser cost solution which further discussed in detail based
upon upgrades of hardware, architecture, and algorithm design. The hardware of the
system was upgraded with the new servo system combined with SSCNET
implementation to improve the functionality and efficiency of the new system.
Meanwhile the PC-based software internal structure was developed and categorized
under six modules which are Menu, Interpreter, 3D Simulation, Machine Motion
System, Drill Bit Monitoring and Live Thermal Monitoring. The designed system
software is established as UTHM Open CNC Controller (UOCC). It shows that the
retrofitted CNC machine has successfully manufactured “Example 1” (STEP-NC) and
“13 Drill Hole” (G-Code) files from the UOCC system which indicates that modules
in the UOCC system are able to communicate with the CNC machine thus validating
the workability of the controller. Moreover, UOCC system has been extended to online
environment via Wi-Fi which utilizes Transmission Control Protocol (TCP) Socket in
Java which used the PC as server to create socket thus establishing bind connection
between UOCC RM mobile phone and the UOCC system, allowing users to remotely
monitor the machining process on mobile platform. While the UOCC AR mobile
application allow users to view machining setup process through Augmented Reality
guide therefore improving the average operating time for experienced users (42.46%)
and non-experienced (28.36%). Moreover, the averaged users’ rating shows 93.3% of
overall satisfactory from the users which shows that the addition of AR in the system
is well received and accepted by the operators of the UOCC
A mathematical model development for the lateral collapse of octagonal tubes
. Many researches has been done on the lateral collapse of tube. However, the previous researches
only focus on cylindrical and square tubes. Then a research has been done discovering the collapse
behaviour of hexagonal tube and the mathematic model of the deformation behaviour had been developed
[8]. The purpose of this research is to study the lateral collapse behaviour of symmetric octagonal tubes and
hence to develop a mathematical model of the collapse behaviour of these tubes. For that, a predictive
mathematical model was developed and a finite element analysis procedure was conducted for the lateral
collapse behaviour of symmetric octagonal tubes. Lastly, the mathematical model was verified by using the
finite element analysis simulation results. It was discovered that these tubes performed different
deformation behaviour than the cylindrical tube. Symmetric octagonal tubes perform 2 phases of elastic -
plastic deformation behaviour patterns. The mathematical model had managed to show the fundamental of
the deformation behaviour of octagonal tubes. However, further studies need to be conducted in order to
further improve on the proposed mathematical mode