Mechanical Guru's

INDUSTRIAL ENGINEERING Information collection and recording Information collection techniques: The accuracy of data about the method study problem is important for the development of improved method. The following techniques are used for the collection of information / data about the task under consideration. These are not exclusive of each other, and for any particular method study problem, some or all the techniques may be employed. ·          OBSERVATION It is a common technique used for collecting information about the present method or the existing problem. The method study person visits the site where the work is currently being done and observes various steps in the method being followed. There are many instances where all the data needed is obtained by only observing the work or work site. ·         DISCUSSION Discussion with those who do or who supervise the work can frequently provide information not obtainable by observation. The discussion technique is

EXPERIMENT - 1 AIM: TO FIND OUT CRITICAL SPEED EXPERIMENTALLY AND TO COMPARE THE WHIRLING SPEED OF A SHAFT. EQUIPMENTS:  TACHOMETER, SHAFT, END FIXING ARRANGEMENT ETC. THEORY : THIS APPARATUS IS DEVELOPED FOR THE DEMONSTRATION OF A WHIRLING PHENOMENON. THE SHAFT CAN BE TESTED FOR DIFFERENT END CONDITIONS. THE APPARATUS CONSISTS OF A FRAME TO SUPPORT ITS DRIVING MOTOR, END FIXING AND SLIDING BLOCKS ETC. A SPECIAL DESIGN IS PROVIDED TO CLEAR OUT THE TESTING OF BEARING OF MOTOR SPINDLE FROM THESE TESTING SHAFTS. THE SPECIAL DESIGN FEATURES OF THIS EQUIPMENT ARE AS FOLLOW: A.       COUPLING A FLEXIBLE SHAFT IS USED TO DRIVE THE TEST SHAFT FROM MOTOR. B.       BALL BEARING FIXING ENDS. THE END FIXES THE SHAFT WHILE IT ROTATES. THIS CAN BE REPLACED WITHIN A SHORT TIME WITH THE HELP OF THIS UNIT. THE FIXING ENDS PROVIDE CHANGE OF END FIXING CONDITION OF THE ROTATING SHAFT AS PER THE REQUIREMENT. C.       SHAFT SUPPLIED WITH THE EQUIPMENT POLISHED STEEL SHAFT IS