19-09-2012, 02:54 PM
Classification of Metal Removal Processes and Machine tools
Classification of Metal.pdf (Size: 145.25 KB / Downloads: 203)
Manufacturing – Need and concept
The progress and the prosperity of human civilization are governed and judged mainly by improvement and maintenance of standard of living through availability or production of ample and quality goods and services for men’s material welfare (MMW) in all respects covering housing, clothing, medicine, education, transport, communication and also entertainment. The successful creation of men’s material welfare (MMW) depends mainly on
• availability of natural resources (NR)
• exertion of human effort (HE); both physical and mental
• development and use of power tools and machines (Tools),
Manufacturing Processes
This refers to science and technology of manufacturing products effectively, efficiently, economically and environment-friendly through
• Application of any existing manufacturing process and system
• Proper selection of input materials, tools, machines and environments.
• Improvement of the existing materials and processes
• Development of new materials, systems, processes and techniques
All such manufacturing processes, systems, techniques have to be
• Technologically acceptable
• Technically feasible
• Economically viable
• Eco-friendly
Production Management
This is also equally important and essential in the manufacturing world. It mainly refers to planning, coordination and control of the entire manufacturing
in most profitable way with maximum satisfaction to the customers by best utilization of the available resources like man, machine, materials and money. It may be possible to manufacture a product of given material and desired configuration by several processes or routes as schematically indicated in Fig. 1.2.
Machining – Purpose, Principle and Definition
(a) Purpose of Machining
Most of the engineering components such as gears, bearings, clutches, tools, screws and nuts etc. need dimensional and form accuracy and good surface finish for serving their purposes. Preforming like casting, forging etc. generally cannot provide the desired accuracy and finish. For that such preformed parts, called blanks, need semi-finishing and finishing and it is done by machining and grinding. Grinding is also basically a machining process.