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ASSESSMENT OF MACHINABILITY FOR EN SERIES STEEL USING SURFACE ROUGHNESS CRITERIA |
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COLLEGE: B. V. B. COLLEGE OF ENGG. AND TECH. , HUBLI.
RECOGNITION : APPRECIATION PRIZE
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The following methodology has been adopted in this project. |
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The high and low values (two levels) of the factors were selected based on the general |
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condition prevailing in the industry.
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The numbers of experiments in machining (on CNC lathe) were decided based on the
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principles of Design of experiments. |
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The required numbers of work-pieces were made ready.
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The work-pieces were heat treated to get the required hardness. |
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Turning operation was carried out on CNC Lathe for all possible combination of machining
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parameters (Design matrix). |
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The surface roughness of the machined work-pieces were measured and recorded.
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The results obtained by the experiments were used to develop an empiricalrelation using
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Multiple Regression method. |
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Validity of the results obtained was analyzed using ANOVA (Analysis of variance)technique.
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A computer program was developed for optimization of machining parameters. |
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The optimization is achieved by taking into consideration the various constraints viz. tool life, surface roughness and metal removal rate. The effectiveness of machining is controlled among other factors by the machinability of the material that is machined. Machinability can be quantitatively assessed. As of now, there is no universally accepted measurement technique for machinability. Machinability can be assessed by tools like tool life, tool wear rate, surface toughness, cutting force required, metal removal rate, machining time, machining cost and ease of chip disposal etc. |
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Manufacturing of Automatic Online Operated Mechanotronic ROBOT |
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COLLEGE: Govt. Polytechnic, Osmanabad |
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With the present need of increased productivity and delivery of end product of uniform quality, industry is turning more and more towards automation, At the present time, most automated manufacturing. Tasks are carried out by, special purpose machines designed to perform predetermined functions in the manufacturing process. The inflexibility and generally high cost of these machines often called hard automation system have lead to a broad based interesting the use of capable of performing a verify of manufacturing function on the more flexible working environment and at the lower production cost. |
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The robots advantages of flexibility, reprogrammability, tirelessness, working in hazardous environment, high precision work have come to be appreciated by industries. |
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The robot is mechanical unit which perform motion similar to human arm. It is most obvious part of the robot and mainly consist of a base, an arm and a wrist. Within the manipulator there are mechanical parts like links, joints actuators, sensors which execute the robot movement in number of degree of freedom.The movement of the manipulator can be designed in relation to it's co-ordinate system. The arm body and wrist. Joint of manipulator used for positioning and orienting end effector's within work space. |
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At present there are only simple pick and place robots are available in industries. But in our project we designed by taking consideration of Kaizen technology, J.I.T. (Just in Time) technology, ergonomic consideration and online concept.It can be used in industries, defense services, transporting for loading / unloading and material handling. In future we can be also made it wireless and mobile by making some changes in electronic circuit and control program. |
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