Comprehensive study material for ITI technical trades, including Fitter Electrician and others. Covers NIMI pattern theory, workshop practicals, safety standards, and industrial manufacturing processes.
A bearing is a machine element that constrains relative motion and reduces friction between moving parts of the machine to obtain the desired motion. eg., To stop deviation in a shaft of a machine while rotating, a bearing is used. The equipments which support the rotating parts of a machine are called bearings. The word … Read more
We know that a machine has different parts and every part consists of many substances that are related to each other. In these parts, some parts can be permanently fixed while some parts are temporary because they need to open and close so that we can use many types of joints. Joint or fastening is … Read more
A surface is defined as the exterior boundary of an object with its surroundings, which may be any other object, such as fluids air, water, or a combination of these. The surface encloses the object’s bulk mechanical and physical properties. The quality of the surface is an important factor in deciding the performance of a … Read more
Gauges and templates are used in the modern era to make any part interchangeable and to increase mass production. Due to every time adjustment, it is impossible to take accurate readings, and making parts interchangeable takes too much time. Therefore, for mass production to make it interchangeable gauges and templates are invented. A gauge is … Read more
Screw threads are extensively incorporated in the design of mechanical components to fasten or transmit power. Depending upon the applications, these threads differ in size, form, and quality. Thread production is of great importance for fitters because of the increasing demand for high-precision fastening devices and power transmission systems. In this chapter, we will study … Read more
The various operations are performed in a lathe machine such as follows. 1. Straight Turning The workpiece is turned straight when it is made to rotate about the lathe axis and the tool is fed parallel to the lathe axis. The straight turning produces a cylindrical surface by removing excess metal from the workpiece. It … Read more
The lathe is considered the oldest machine, that is widely being used in industries. It is said that the first screw-cutting lathe was developed by an English man named Henry Moudslay in the year 1977. Modern high-speed and heavy-duty lathes are being developed based on this machine. The primary task of a lathe is to … Read more
The assembling technique is a combination of methods used for assembling the machines, their parts, and types of equipment. The assembling is a process by which the different parts of a machine are assembled together to form a unit. It can be understood more easily as a design of assembly. The design of an assembly … Read more
The maintenance required in the plants to run the machine regularly and to keep the types of equipment safe is known as plant maintenance. So, it is important to know about the maintenance. Maintenance is an art of engineering that is developed in a manufacturing organization to keep the plant physically in good operating condition … Read more
In the present time, to make any part interchangeable and to increase mass production, it is important that a job or workpiece should be prepared according to the drawing tolerance and limit with the help of a caliper or other instruments. It is possible to prepare an accurate job but it is very time-consuming. Thus, … Read more
