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Mechanical machining technology Assignment PDF

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Added on  2021-06-14

Mechanical machining technology Assignment PDF

   Added on 2021-06-14

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1.0 INTRODUCTIONThe continued proliferation of miniature and the different micro products components had steadily increased the demand for their production to rise exponentially. Most manufacturers today are investing heavily in the micromachining technique in the production of precision wise equipment. With the ever decreasing feature size required from the conventional millimeters to tens of micrometers, the conventional mechanical machining technology cannot be trusted to handle such high precision. It is therefore imperative to switch to more non-mechanical means of material removal to be adopted by the company. This report describes briefly, the operations of the non-mechanical material removal tools(Kussul et al., 1996).2.0 BODYThis section outlines the basic principles behind the operations of the non-traditional machining tools for deeper understanding, the industry specification for the different level of precision required. A comparison is done on the different tools used by the manufacturing industry and the sharp contrast between them, this will be vital in making the best decision on the way forward for the company in embracing the new technology. 2.1 PRINCIPLES OF OPERATIONRemoval of materials from the work-piece using the non-mechanical approach generally are grouped into four principles primarily based on the source of energy used in the removal process of the material at the work-piece. These principles are hereinafter discussed in details. This will enabledeeper comprehension of their modus operanda, which is vital is ensuring safety and health requirements are adhered to. The four basic principles are i.Electrochemical grinding (ECG)ii. electrochemical machining (ECM)iii.electrical discharge machining(EDM)iv. Radiant Energy Material Removal Method.
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The discussion below details their mode of operation and basic principle they use to achieve their desired efficiency and effectiveness. 2.1.1 Electrical Discharge (EDM)This technique is the widely used non-mechanically machining technology to remove materials from the work-piece .it involves passing a low voltage but of high-frequency direct current which aims at removing the covering layers of the metallic material. This is done using an electrode whichin most case is the brass. Care is taken such that the cross-sectional part of the container technically is supposed to be identical to the cavity to be machined. The dielectric fluid is used which provides the medium where the electrode and the part to undergo machining is immersed(Goswami, Mitra and Sarkar, 2009). For a medium to act as a dielectric in this method, it must meet the following minimums. i.The dielectric must have the ability to prevent the electric current from flowing in a centric manner.ii.Ability to flash away the would be remains of the work-piece part.iii.Ability to act as a coolant.The figure below illustrates the principle behind its working,AdvantagesIllustration 1: Electrical Discharge (EDM)
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