Considerable heat is generated at the cutting edge of the tool due to friction between tool and work, and the plastic shearing of metal in the form of chips, when the tool is machining metal on a machine tool. The heat is evolved at three zones. A, B and C shown in Fig. 22.27. In zone A (shear zone), maximum [...]
The following points highlight the top five theories on mechanics of metal cutting in the industries. The theories are: 1. Ernst-Merchant Theory 2. Merchant Theory 3. Stabler Theory 4. Lee and Shaffer Theory. 1. Ernst-Merchant Theory: According to this theory: This is based on the assumptions: (i) That expenditure is minimum in the process, i.e., shear will take plane in [...]
Considerable heat is generated at the cutting edge of the tool due to friction between tool and work, and the plastic shearing of metal in the form of chips, when the tool is machining metal on a machine tool. The heat is evolved at three zones. A, B and C shown in Fig. 22.27. In zone A (shear zone), maximum [...]
Surface Roughness: The quality of surface is often of utmost importance for the correct functioning of many machine parts. For moving surfaces (running or sliding fit) the finish affects both friction and wear whether they are lubricated or not. In the case of locating surfaces, the finish also affects transition and interference fits, for, if the surfaces are rough, the [...]
In design of cutting dies, the cutting pressure coming on it is very important and its magnitude is of the offer of 1.5 L x t x fs . where L = periphery of work piece, t = thickness of work piece, fs = ultimate shear strength of work piece. In addition, total cutting force depends upon: (i) Sharpness of [...]
In this article we will discuss about:- 1. Introduction to Packaging 2. Concept of Packaging 3. Factors Affecting Packaging 4. Metal Containers 5. Elements 6. Packaging Machinery. Introduction to Packaging of Products: In the modern world, most of the goods are available in packages. The packaging protects and preserves the goods and offers convenience in transport, handling and sale also. [...]
Here is an essay on ‘Flexible Manufacturing System’ for class 9, 10, 11 and 12. Find paragraphs, long and short essays on ‘Flexible Manufacturing System’ especially written for school and college students. Essay on Flexible Manufacturing System Essay Contents: Essay on the Definition of Flexible Manufacturing System Essay on the Characteristics of Flexible Manufacturing System Essay on the Need for [...]
There are various ways of transporting workpieces around FMS in the industries. The ways are: 1. Material Handling Systems 2. Automated Guided Vehicle System (AGVS) 3. Automatic Monorail Systems (AMS) 4. Magazines and Conveyoring Systems 5. Monitoring Systems 6. Hybrid (Symbolic-Numeric) Expert System. Way # 1. Material Handling Systems: Material handling systems (MHS) have an important role in the operation [...]
Here is a term paper on the 'Classification of Industries'. Find paragraphs, long and short term papers on the 'Classification of Industries' especially written for school and college students. Term Paper on Industries Term Paper Contents: Term Paper on Engineering Industries Term Paper on Chemical Industries Term Paper on Textile Industries Term Paper on Food-Processing Industries Term Paper on Other [...]
In this article we will discuss about the atomic, crystal and metallic structure of metals with the help of diagrams. Atomic Structure of Metals: Most of the material properties are dependent on its atomic structure. The changes in atomic structure do not influence the surface appearance and as such no judgement about material properties can be made by seeing the [...]