The implementation of uncertainty evaluation model in manufacturability analysis system for miniature machine tool

The development of Manufacturability Analysis System for micro-machining domain (MicroMAS) is intended to address the need of the 4-axis Miniature Machine Tool (MMT) that require such system to assist the user in generating micro-component through manufacturability evaluation. One of the manufacturability aspects being assessed is the impacts from Uncertainty Evaluation Model (UEM) analysis that analyse the influence of the errors stemmed from the MMT construction on the geometrical accuracy of the machined micro-parts. The model has allowed a methodology for the errors in a custom-made MMT to be predicted and to further understand the origin of the errors on the machined micro-part. This paper reports on the implementation of UEM in the development of MicroMAS. Therefore, the results from uncertainty evaluation towards the MMT were integrated in the database which are interactively searched based on IF-THEN clauses in order to determine which rules satisfy the requirements expressed via inputs

The development of a manufacturability analysis system for micro-milling

Manufacturability analysis systems (MASs) have been developed to enable the evaluation of manufacturability aspects during the design stage. MASs have been shown to be useful for macro-manufacturing processes but less attention or effort has been put for their development in the scope of micro-manufacturing. This thesis describes the development of a MAS for a micro-machining domain (MicroMAS) with a custom-made 4-axis Miniature Machine Tool (MMT) being the scope of implementation. There are three important components in this study which are; MAS, Uncertainty Evaluation Model (UEM) and micro-milling experiments. The integration between the results from the UEM analysis and micro-machining experiments were being incorporated into the MicroMAS to provide the system with the real condition of the MMT. In MicroMAS, Primitive Feature Analysis (PFA) is introduced as a new technique in gathering information from a CAD model and analysing its manufacturability. The results from the manufacturability assessment in MicroMAS are successfully achieved through the manufacturability index which indicates the relative ease of machining the CAD model and list of related suggestions. UEM is developed to analyse the influence of the errors stemmed from the MMT construction on the geometrical accuracy of the machined micro-parts. The model has allowed a methodology for the errors in a custom-made machine tool to be predicted and to further understand the origin of the errors on the machined micro-part (either from the machine or the process itself). The abilities of the MMT are evaluated through various types of experiments where the surface quality and geometrical accuracy can be concluded to be at an acceptable range. From the experience gained from the research, the development of MicroMAS for micro-milling has been found to be practical in assisting a user to generate micro-parts using the MMT

The development of a manufacturability analysis system for micro-milling

Manufacturability analysis systems (MASs) have been developed to enable the evaluation of manufacturability aspects during the design stage. MASs have been shown to be useful for macro-manufacturing processes but less attention or effort has been put for their development in the scope of micro-manufacturing. This thesis describes the development of a MAS for a micro-machining domain (MicroMAS) with a custom-made 4-axis Miniature Machine Tool (MMT) being the scope of implementation. There are three important components in this study which are; MAS, Uncertainty Evaluation Model (UEM) and micro-milling experiments. The integration between the results from the UEM analysis and micro-machining experiments were being incorporated into the MicroMAS to provide the system with the real condition of the MMT. In MicroMAS, Primitive Feature Analysis (PFA) is introduced as a new technique in gathering information from a CAD model and analysing its manufacturability. The results from the manufacturability assessment in MicroMAS are successfully achieved through the manufacturability index which indicates the relative ease of machining the CAD model and list of related suggestions. UEM is developed to analyse the influence of the errors stemmed from the MMT construction on the geometrical accuracy of the machined micro-parts. The model has allowed a methodology for the errors in a custom-made machine tool to be predicted and to further understand the origin of the errors on the machined micro-part (either from the machine or the process itself). The abilities of the MMT are evaluated through various types of experiments where the surface quality and geometrical accuracy can be concluded to be at an acceptable range. From the experience gained from the research, the development of MicroMAS for micro-milling has been found to be practical in assisting a user to generate micro-parts using the MMT

Rekabentuk dan implementasi sistem automasi pembotolan MAPS menggunakan programmable logic controller, PLC

This paper discusses the design and implementation of Programmable Logic Controller (PLC) on Modular Automation Bottling Production System-MAPS. PLC is used for running a system so that it can work automatically and used on repeatable system application. The objectives of using PLC in industry are to minimize production cost, increase productivity, increase quality and system reliable. Design and implementation of this automation system uses MAPS. MAPS is a modular system that was developed by using a few stations into an integrated system. In this research, actual MAPS were used and integrates with other system such as detector, pneumatic, mechanic, electronic and control system

Kelestarian pengurusan rantaian bekalan di Malaysia: isu dan masa hadapan

Kelestarian pengurusan rantaian bekalan semakin diberi perhatian dan mendapat tempat dalam pelbagai industri. Ia juga diaplikasikan dalam syarikat bagi meningkatkan prestasi syarikat. Namun, piawaian kelestarian pengurusan rantaian bekalan antara syarikat tidak sama walaupun berada dalam satu industri. Piawaian kelestarian biasanya menumpukan kepada pengurusan servis atau produk untuk meminimalkan kos. Kajian yang telah dilakukan juga banyak memberi tumpuan kepada satu atau dua aspek kelestarian seperti dari segi persekitaran sahaja atau persekitaran dan ekonomi sahaja. Kajian lepas juga menunjukkan tidak banyak kajian terhadap ketiga-tiga aspek kelestarian. Kekurangan satu piawaian umum yang menggabungkan ketiga-tiga aspek kelestarian untuk dijadikan sebagai panduan asas dalam mencapai kelestarian pengurusan rantaian bekalan membawa kepada kajian ini. Secara amnya, kertas ini membincangkan gambaran keseluruhan kelestarian pengurusan rantaian bekalan terutamanya di Malaysia. Konsep pengurusan rantaian bekalan, kelestarian pengurusan rantaian bekalan, kepentingan dan hubungan antara kelestarian dan pengurusan rantaian bekalan turut dibincangkan secara menyeluruh. Cabaran dan isu dalam kelestarian pengurusan rantaian bekalan secara am dan khususnya di Malaysia turut dibincangkan seperti isu penilaian kelestarian sesuatu pengurusan rantaian bekalan. Akhirnya, cadangan yang bersesuaian bagi isu penganalisaan kelestarian pengurusan rantaian bekalan dicadangkan dan disimpulkan