A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Jerald, J.
- Experimental Investigation on Micro-End Milling of Cast Grade Virgin PMMA
Authors
1 Department of Production Engineering, National institute of Technology, Tiruchirappalli, IN
Source
Manufacturing Technology Today, Vol 13, No 5 (2014), Pagination: 14-16Abstract
This paper presents an experimental study on effect of micro end milling process parameters on surface roughness with PMMA (Poly methyl methacrylate) as work piece material. It has wide applications in micro features and micro parts fabrication for automobile, aerospace, biomedical industries. Effect on surface finish during micro end milling on PMMA with 0.7mm carbide end mill tool was analyzed in this work. Response Surface Methodology (RSM) technique used for design of experiments for the factors feed rate and spindle speed. Experiments were carried out using multipurpose micro machine tool. Analysis was carried out with surface roughness value measured using surface roughness tester and inferences were made.
Keywords
Micro End Milling, PMMA, Response Surface Methodology, Surface Roughness.- Experimental Investigation of Micro Drilling of C360 Brass
Authors
1 Dept of Production Engg, National Institute of Technology, Tiruchirappalli, IN
Source
Manufacturing Technology Today, Vol 12, No 10 (2013), Pagination: 26-29Abstract
This paper presents an experimental study on effect of micro drilling parameters on burr formation in C360 brass. Burr formation during machining is unacceptable in nature. Hence its dominant parameters are studied in this work. Micro drilling with 0.8mm HSS drill on C360 brass was performed. Response Surface Methodology (RSM) is used for design of experiments for the factors such as feed rate and spindle speed and experiments were carried out using multipurpose micro machine tool. Burr formation analysis was carried out using Scanning Electron Microscope (SEM) and inferences were made.Keywords
Micro Drilling, Burr Formation, Response Surface Methodology, Scanning Electron Microscope.- Optimization of Parameters in Electro Chemical Machining Using Non Traditional Techniques
Authors
1 Dept. of Production Engg., National Institute of Technology, Tiruchirappalli, IN
Source
Manufacturing Technology Today, Vol 7, No 4 (2008), Pagination: 10-14Abstract
Electro Chemical Machining (ECM) is a Non-traditional machining technique that has been used in the production of dies and it is originally as signed for manufacturing complex shaped components in defense and aerospace applications. The most important performance measures in ECM are material removal rate (MRR) and surface roughness (Ra). In this work, experiments were performed to determine parameters affecting material removal rate and surface roughness. The data obtained for performance measures have been analyzed using the design of experiments method. A considerably profound equation is obtained for the MRR and Ra using current, gap voltage, flow rate and gap setting parameters. SPSS software and C programming have been used to optimize the machining parameters of ECM.- Simultaneous Scheduling of Parts and AGVS in an FMS Using Genetic Algorithm
Authors
1 School of Mechanical Engg., SASTRA (Deemed University), Thanjavur-613 402, IN
2 Dept. of Production Engg., National Institute of Technology, Trichy-625 015, IN
3 Dept. of Mechanical Engg., Kumaraguru College of Engg., Coimbatore-641 006, IN
4 Dept. of Computer Science and Engg., PR Engg. College, Thanjavur-613 403, IN
Source
Manufacturing Technology Today, Vol 3, No 12 (2004), Pagination: 8-11Abstract
Flexible Manufacturing System (FMS) is a highly automated system consisting of computer controlled machines and peripherals combined with intensive material and dataflow. Extensive research has been conducted to design and solve the operational problems of FMS, but many of the problems still remain unsolved. In particular, the scheduling task, the control problem during the operation, is of importance owing to the dynamic nature of the FMS such as flexible parts, tools and Automated Guided Vehicle (AGV) routings. Owing to its highly automated nature, a typical FMS has a high investment cost. Hence, it becomes necessary to identify the most efficient scheduling rules at the operating stage. Automated Guided Vehicles (AGVs) are among various advanced material handling techniques that are finding increasing applications today. They can be interfaced to various other production and storage equipment and controlled through an intelligent computer control system. Simultaneous scheduling can be defined as the scheduling of machines and a number of identical AGVs in a FMS. In this paper, simultaneous scheduling of parts and AGVs is done for a particular type of FMS environment by using a nontraditional optimization technique called Genetic Algorithm (GA). The problem considered is a large variety problem and objective is combined objective (minimizing penalty cost and minimizing machine idle time). The results are found and conclusions are presented.- Optimization of Operating Parameters in Wire Electric Discharge Machining Using Particle Swarm Optimization and Memetic Algorithm
Authors
1 School of Mechanical Engineering, Shanmugha Arts, Science, Technology & Research Academy, Thanjavur - 613 402, IN
2 Department of Mechanical Engineering, J.J. College of Engineering, Tiruchirappalli-620 009, IN