Whenever a cutting operation is done on a job, it experiences different types of loads (forces) in different directions. These loads tend to move the job and cutting tool from its original position which results in a decrease in accuracy or dimensional defect of the prepared job. So, it is important that the job should … Read more
We know about the many engineering components that have the internal toughness to protect them from any impact. e.g., Gear, cam, shaft, etc. Case hardening is the process of hardening the surface of a metal object while allowing the metal deeper underneath to remain soft. Thus, forming a thin layer of harder metal is called … Read more
The process of heating and cooling for changing the structure of metal or alloy and thus obtaining the required properties is called heat treatment. It can also be said as a process of heating and cooling of ferrous metals especially various kinds of steels in which some special properties such as softness, hardness, tensile strength, … 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
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 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
