Different Departments in Mechanical Engineering.

Welcome to today's blog..

In the previous blog, we have talked about Mechanical Engineering and various aspects of it. Let's talk about the basic departments within the Mechanical core such as Manufacturing, Machine tools, foundry and powder metallurgy, etc. In 2015, I did my Summer Training in Ordnance Factory where I worked/visited in different departments such as Machining, foundry, metal engraving, CNC and Tooling so based on the knowledge gained I will write this blog. 

"In the following paragraph, you might the words used as 'job' it means workpiece, not a 'professional job' ".

During my training, I worked in the Machining Department which had sub-branches as metal engraving, metal cutting, wire drawing, CNC and basic jobs made using a tool/grinding wheel. Griding wheel is also a tool shaped in the form of a wheel which is a made of abrasive material. Predominantly, I learned about CNC which was horizontal milling and vertical milling. The CNC machine had 5 axes (direction, i.e., X, Y, Z, a & b) to work on a provided job. To make any job using a CNC machine you have to write a program using the Manual provided by the company. I learned the basics about the CNC programming which is similar to C programming with different syntax and indentation. Furthermore, I visited the engraving section where I learned how the metal is engraved using the tool. Mostly, the tool used is a carbide tip tool, HSS, cast iron, etc. 

To make any job we need a tool which has good fatigue, tensile and compressive strength so that it can bear the impact or wear & tear and make the job efficiently. The engraving tool is highly sensitive; thus, requires proper tooling techniques to make and to work on the job. All the automatic machines (CNC) use coolant which is recirculated on the job and the tool for heat dissipation, reduction in wear and tear, better machinability and to obtain a cleaned job. Mostly, the coolant used in the CNC machine is emulsified coolant which is made up of oil emulsified with water through the use of the detergent. The tool or grinding wheel used in CNC needs cooling effect otherwise, you would not obtain a proper job. Nowadays, the foundry work is done using the machines reasons are safety, optimization of time, less scrap and better handling of raw materials. This above context is about the traditional engineering methods which are used to make mechanical parts for automobiles, aircraft, tanks, etc.

Thanks for reading it...