In micro-electrical discharge machining (micro-EDM), dielectric plays a significant role during the machining process as different types of dielectrics have different chemical compositions, cooling rates and dielectric strengths. For this, dissimilar process responses are accounted when machining in EDM at micron level. The present paper investigates micro-EDM characteristics such as material r...

Electrical Discharge Machining (EDM) is a time consuming process and the operating cost is high. Optimum machining conditions reduces the machining time in the EDM process and yield better performances. Electrode material is also having their significance in the performances. In this paper a work has been carried out with different electrode materials namely copper, brass and tungsten while EDM...

NC machining is being used to create increasingly complex shapes. These complex shapes are used in a variety of defense, aerospace, and automotive applications to (1) provide performance improvements, and (2) create high performance tooling (e.g., molds for injection molding). The importance of the machining process is increasing due to latest advances in high speed machining that allows machin...

Wire Electrical Discharge Machining (WEDM) is a non-traditional thermo-electric process capable of machining hard materials of highly complex three dimensional shapes. In this paper, the dry WEDM experimentation is conducted using oxygen as a dielectric medium. The deionized water is replaced by the oxygen as a dielectric medium to ameliorate the environmental impact in the machining surroundin...

Grey relational analyses are applied to determine the suitable selection of machining parameters for Wire Electrical Discharge Machining (Wire-EDM) process. The Grey theory can provide a solution of a system in which the model is unsure or the information is incomplete. Besides, it provides an efficient solution to the uncertainty, multi-input and discrete data problem. According to the Taguchi...

The lumber of Eucalyptus urophylla×E. camaldulensis was heat-treated at either 180, 190, 200, or 210 oC for 3 h. According to the national forestry standard methods for evaluating the machining properties of lumber, the machining properties (including planing, sanding, boring, mortising, shaping, and turning) of heat-treated and untreated control samples were investigated. The results indicated...

The choice of the machine tools is one of the considerations of manufacturing companies which depend primarily on machining process, by deciding how a finished product will be manufactured. The activity of tools choice is established in geometry of machining features, but it also has a direct impact on workability and execution of machine-tool. We propose in this paper an integration module of ...

Received: 20 October 2014 / Accepted: 15 November 2014 Abstract: An approach for determination of the best cutting parameters leading to maximum material removal rate in machining D2 (Die Steel) on vertical milling centre is used. The Response Surface Methodology technique is applied to obtain optimum values of considered parameters in machining D2 (Die Steel) with four flutes carbide end mill ...

This research involves the investigation of process parameters for a new rapid machining process designed for metal foams. Metal foams are structures that contain a network of interconnected pores throughout the structure and surrounding surfaces. Traditional machining methods break down the pore walls of metal foams, creating a smeared surface finish with little to no surface porosity. The des...

This thesis presents a new method for Computer Aided Process Planning (CAPP) for a subtractive Rapid Prototyping (RP) process. The “CNC-RP” process uses a 4-axis CNC machining center to create parts with flat end-mills. The objective is to determine the optimal system parameters for the RP process those that enable parts to be created in a shorter amount of time. Two main contributions make thi...