Evaluating The Cutting Process Parameters For Achieving The Preferred Machined Quality

Figure ‎3 13 : A photo and SEM micrographs of flank face; (a) a photo of flank face and tool wear region (b) SEM micrograph of flank face; a micro fracture is shown (c) highly magnified flank face shows some holes and scratches probably caused by TiC particles and a smooth adhered layer which has covered the scratches and grooves. It can be seen that the sharp cutting edge of an unused tool has been chamfered after 1 second of machining and has left a sheared surface at the wear land.

In order to accomplish this objective, weight assigned are W1= -0.1, W2=0.25 and W3=0.65. As in Table 5 and in Fig. 3, the optimal machining parameters predicted using SA are work speed (Vw= 51.15 m/min), feed rate (f = 16.30 mm/min) and depth of cut (d = 0.01 mm) for a minimum surface roughness of 0.476µm. For these parameters the roundness is found to be 0.028mm with a material removal rate of 20.34mm3/min.

To avoid steps between the different levels, the edges will be rounded. Therefore a minimal resolution of five microns is valid for the cut mark measurements, although the software allows measurements till to decimals because of its logarithm to calculate the surface. In this dissertation, all measurements are fully specified. However, a less accuracy of values less than five microns must not be forgotten. Higher resolutions till one micrometre are also possible, but the number of scanned levels is restricted. Therefore it is possible to analyse fine cut marks in a higher resolution, but in this case, cuts were up to 1 mm deep and a smaller resolution is sufficient. Using this resolution, the ends of cuts, which are very flat, were excluded because their size is approximately under 15 microns and therefore inaccuracies in measurement increase, which might influence the

Laser Milled Face — More precise and consistent surface roughness than possible methods. Optimal surface roughness to maximize

The building materials available to engineers today are vastly improved over those of the past. One class which has seen wide spread usage in many fields are composites. These new materials first appeared on the aerospace scene in the early 1970’s, for these materials were found to provide many benefits over the previous metal-based designs.

Composite materials and structures are particularly attractive for aerospace applications due to their high stiffness, high strength and low weight properties. The use of such structures allows for an overall aircraft mass reduction, reduced fuel consumption and increased service life resulting in a reduction in aircraft operating costs.

The most common abrasive materials used for Abrasive jet machining are aluminum oxide, silicon carbide. Sodium bicarbonates, glass beads of small grain size and dolomite are used for cleaning and polishing purpose. The selection of abrasive material depends on the work material, machining operation and required material removal rate.

Abrasive Jet Machining (AJM) is the removal of material from a work piece by the application of a high speed stream of abrasive particles carried in gas medium from a nozzle. The AJM process is different from conventional sand blasting by the way that the abrasive is much finer and the process parameters and cutting action are both carefully regulated. The process is used chiefly to cut intricate shapes in hard and brittle materials which are sensitive to heat and have a tendency to chip easily. The process is also used for drilling, de-burring and cleaning operations. AJM is fundamentally free from chatter and vibration problems due to absence of physical tool. The cutting action is cool because the carrier gas itself serves as a coolant and takes away the heat.

With the rapid development in technology over the past few years it is understandable that many new manufacturing techniques have arisen in order to fine tune the precision of the characteristics and finishes of products. This report will discuss some of these manufacturing techniques and their disadvantages and advantages.

Resistance - In various assembling commercial enterprises, there is a sure level of resilience which is allowed when assembling parts. This is something that may vary, contingent on the thing that is being produced. At the point when redone CNC machining is used, it holds to tight resistances, which makes a predictable piece that will be of advantage to your

As the acceptance and use of Additive manufacturing methods increases so does the demand to increase the geometric accuracy of products. The additive manufacturing process produces products of fair geometric quality but is nowhere near as geometrically accurate as its counter part, subtractive manufacturing. Here I review the processes of additive manufacturing that cause a decrease in geometric accuracy. As processes that cause geometric inaccuracy are highlighted; the additive manufacturing process comes closer to producing product that maintain a high level of geometric accuracy.

In this assignment I have demonstrated an understanding of engineering design and manufacture by looking at traditional manufacturing processes and non-contact processes. I have selected the right process/process and its suitable materials, economics, quality issues, dimensional accuracy and they’re advantages/disadvantages. I have given a thorough conclusion on what method I believe is the best depending on the quantity of lathe carrier body’s being made and also value for money.

Metalworking is one of the oldest occupations of humankind. At the beginning of last century metalworking machine tools were invented and these were controlled by an operator who performed all the movements of the tool in order to obtain the final parts. Nowadays, metalworking using machine tools is one of the most important activities to support industries development and the most important of these industries is the automotive industry.

The accuracy of CNC machines is mainly determined by a similar positioning resolution along all three orthogonal axes and by the diameter of the rotary cutting tools. There are factors that

The Main Objective of Presentation this paper is to make attempt to Acquire Brief overview of the need of Optimization process in Recent Manufacturing Trends. The Drilling and Turning is essential Operation that is carried out by every manufacturing firm using mostly Computer Numerical Control Machines. The purpose of the Product Quality improvement is to satisfy Customer need and expectation. Thus Improvement in Product quality can be achieved by Taguchi Robust Design Method for Drilling, Turning, Facing, Boring etc Operations. The S/N ratio and Analysis Of Variance (ANOVA) is going to implement to know contribution of each selected parameters on Surface Roughness and MRR. For the improvement in Drilling process the Control parameters considered are Depth of cut, Feed and Cutting Speed and for Turning control parameters are Feed, Speed and Depth of cut irrespective to the Surface finish and Material Removing Rate With Considering presence and absence of cutting fluid. This paper reviews various literatures on optimization of drilling and turning process by studying influence of various parameters like feed, depth of cut, speed,