please send me cnc industrial training report for six month duration for mechanical engineer in .doc formet .
MY EMAIL ID IS :-sandipkumarsmn[at]gmail.com
for this kindness iwill be very happy .

by:- sandip kumar suman

CNC SYSTEMS

INTRODUCTION

Numerical control (NC) is a method employed for controlling the motions of a machine toolslide and its auxiliary functions with input in the form of numerical data. A computer numericalcontrol (CNC) is a microprocessor-based system to store and process the data for the control of slide motions and auxiliary functions of the machine tools. The CNC system is the heart and brain of a CNC machine which enables the operation of various machine members such as slides,spindles, etc. as per the sequence programmed into it, depending on the machining operations.The main advantage of a CNC system lies in the fact that the skills of the operator hithertorequired in the operation of a conventional machine is removed and the part production is madeautomatic.The CNC systems are constructed with a NC unit integrated with a programmable logiccontroller (PLC) and some times with an additional external PLC (non-integrated). The NCcontrols the spindle movement and the speeds and feeds in machining. It calculates the traversing path of the axes as defined by the inputs. The PLC controls the peripheral actuating elements of the machine such as solenoids, relay coils, etc. Working together, the NC and PLC enable themachine tool to operate automatically. Positioning and part accuracy depend on the CNCsystem's computer control algorithms, the system resolution and the basic mechanical machineaccuracy. Control algorithm may cause errors while computing, which will reflect duringcontouring, but they are very negligible. Though this does not cause point to point positioningerror, but when mechanical machine inaccuracies are present, it will result in poorer partaccuracy.

SERVICES AND MAJOR FUNCTIONS

The infrastructure of the Engineering Workshops could provide the following listed services to
its consumers both in academic and non-academic terms.
ƒ Machining of metals
ƒ Welding
ƒ Foundry work
ƒ Smith and fitting work
ƒ Woodwork
ƒ Vehicle repair
Subject to the rules established by the Faculty and the University, deploying the following
functions was expected from it.
ƒ Provide above mentioned services to the engineering undergraduates to carry out
their academic activities such as practicals, experiments and etc.
ƒ Provide above mentioned services to the Faculty of Engineering and the University as
a whole if requested.
ƒ Within the feasibility limits, provide above mentioned services to the public. (Service
cost is usually expected to be charged from the service consumers).
It is important to distinctly note that the Engineering Workshops could provide related
knowledge wise services to other engineering organizations and to the public who need
assistance in their work.