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Manual covers about fitting shop machine shop welding , carpentry, tinsmitthy, forging shops
Typology: Exercises
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(An ISO 9001:2008 Certified Institution) NH 206 (B.H. Road), Gubbi, Tumakuru – 572 216.Karnataka.
(An ISO 9001:2008 Certified Institution) NH 206 (B.H. Road), Gubbi, Tumakuru – 572 216.Karnataka.
August 2016
Mr. Natesh C P 1. Mr. Sridhar Rao
Assistant Professor Associate Professor
Professor & Head, Dept. of ME
Engineering is a professional art of applying science and technology to optimize the conversion of natural resources to the benefit of mankind. (Natural resources available in the universe are Iron ore, Air, Sun, Water, Space, Human etc.) Human resource is a supreme strength to develop Engineering to contribute the welfare and progress of the society or to this nation.
Engineer is a person having creative thoughts and ideas to develop technology for the noble cause of the society or to nation. All objects begins an idea, Conceived and visualized by the Engineer. He makes an internal representation of the object in his mind and communicates it to others through media of expression.
Professional activities of an engineer:
It means a set of preparation is to do in order to achieve something or any kind of task/work. (Preparation means programmes, drawings, Materials requirement and their sources, time schedule, cost estimate, scheme and design and method of preparation etc.) It is a management function of defining goal of an individual / organizations. It determines the task/work and resources necessary to achieve set goals. It helps to save materials, labor, time, money efforts and process etc. so that any kind of work/task can be performed successfully without having any difficulty with full confidence.
It is a behavioral technique of improving performance of his individual. It encourage for creating metal picture for successful execution of any work.
There is no substitute for hard work. A spiritual person says that “Work is Worship”, “Practice makes the man perfect”. Practice makes a person to acquire skill to use their knowledge for gaining self assurance and confidence to handle any kind of work without any difficulty.
4. Punctuality (being in time): Punctuality is a moral goodness, which is to be practiced very well punctuality is nothing but courtesy to others. By being punctual you respect the value of time of others. This is more than anything else. It helps you to plan your activities and schedule with precision and efficiency. 5. Work place Environment: Workplace environment is to be maintained neat and clean, and spread happiness, cheerful, love & affection around your work place, at home and also to the community.
6. Efficiency: It is the ability to do what ever we expected of us as promptly accurately and economically as possible. These activities are to be performed by an engineer to maintain quality and integrity for successful execution of any task & to face the challenge of globalization.
It is a place of work for preparing variety of jobs/products by using different kinds of Instruments, hand tools and Machines.
In order to prepare the products in W/s, the w/s is divided in to many branches according to nature of work. Ex: 1.Fitting shop
What are the information required to prepare the product? It is a common experience that when we want to prepare any product, the following information are required.
Before taking up the construction of a product, the person who prepares it must have a clear picture of the shape and size of the object in his mind and to know the method of manufacturing process for successful execution of the work.
A graphic form of representation of an object which contains all the necessary information like actual shape, accurate size, manufacturing methods etc. required for construction of an object is called Engineering Drawing. It is prepared on certain basic principles, symbolic representation, standard conventions, notations etc.
Engineering drawing is said to be the language of an engineer and it can be considered as a powerful tool to convey his ideas.
In Engineering, it is a practice to record ideas in the form drawing. Since engineering drawing is a graphical medium of expression of all technical details without the barrier of word language. It is also called the universal language of an engineer.
**1. Orthographic projection or view. : 2D
Elements of Dimensioning
All Orthographic views are two dimensional . ISOMETRIC PROJECTION (OR) Pictorial drawing:-
Isometric projection is a 3D (pictorial) view. It enables the observer not only see the three dimensions of an object in a single view but also measure them directly. This is used to convey information to persons, who cannot visualize an object from 2D views and also to show complicated structures such as Air Craft, Rocket cell, Service manual layout of pipelines, assembly and disassembly of parts required in maintenance.
ISOMETRIC CONSTRUCTION:- When once the Orthographic projection are drawn using isometric scale, then simply transferred the distances from the orthographic views to get the isometric projection.
Differences between isometric projection & isometric view or drawing
FITTING
It is the process of removing unwanted material with the help of hand tools, from a given stock for making a component or fitting pair.
Fitting work involves a large number of hand operations to finish the work to desired shape, size and accuracy.
A metal is a solid (Expect Mercury) having weight. It is opaque and a good conductor of heat and electricity.
NON- METALS: These available in the form of liquids, gases or solids such as Wood, Stone, Rubber, Plastic, Ceramic, Concrete, Asbestos etc.
FERROUS METALS: Iron containing metals such as pig iron, wrought Iron, Cast Iron, Steel, Carbon Steel, Nickel Steel etc, are called ferrous metals. These can be attracted by magnets and are susceptible to rusting.
NON- FERROUS METALS: Metals like Gold, Silver, Copper, Aluminium, Tin, Platinum, Zinc, neither rust nor can be attracted by magnets.
IRON: Metal like Pig Iron, Cast Iron, Wrought Iron containing small percentage of carbon with Graphite, Silicon, Manganese, Sulphur & Rest Iron.
STEEL:
It is an alloy of iron and in addition there are minute percentage of Silicon, Phosphorus, Sulphur and Manganese.
In addition to iron and Carbon, alloying elements such as chromium Nickel, Tungsten cobalt, Vanadium are mixed. Ex. Stainless Steel (SS), High Speed Steel (H.S.S)
Holding Tools Measuring Instruments Marking Instruments Punching Tools Cutting Tools Miscellaneous
Bench Vice Leg Vice Pipe Vice Drill Vice ‘V” Block Tap Wrench
Steel Scale Out side Caliper Inside Caliper Divider Try Square Vernier Caliper Micrometer (Inside & Out side) Wire gauge Depth Gauge Feeler Gauge Radius Gauge Steel Protractor Pitch Gauge
Jenny Caliper Vernier height Gauge Surface gauge Granite surface plate Scriber
Centre Punch Ball peen hammer Anvil Number Punch Letter Punch Smith hammer
Hack Saw Chisels Files Scrapers Drills Reamers Taps & Dies Bolt cutters
Cutting Player Screw driver Nose Player D.E spanner Ring Spanner Allen Keys Adjustable spanner
Instruments: The devices used for measuring and inspection are called instrument. Eg. Calipers, Micrometer, Gauges etc
Hand Tools: The devices used for preparing the job with various operations by hand are called hand tools.
Machine Tools: The devices used for making various operations with machines like, lathe, milling m/c, etc.
