Machining | Engineering Notes India

Schematic Diagram of a Machining Centre | Machines | Engineering

Machining centres are the most versatile machinery, NC controlled, multifunction, tool changer equipped horizontal or vertical spindle machines. NC Machining centres being faster and more accurate are replacing many-single-purpose machines. Structural elements of machining centres are of cast iron so as to provide excellent vibration dampening and rigidity. Axis slide ways are of rectangular cross-section, hardened and finish ground in [...]

By Vivek C|2017-11-09T17:50:06+05:30November 9, 2017|Machining|Comments Off

Thermal Aspects of Metal Machining | Metals | Industries | Metallurgy

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 [...]

By Jayanti S|2017-10-24T05:51:46+05:30October 24, 2017|Machining|Comments Off

Thermal Aspects of Metal Machining | Metals | Industries | Metallurgy

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 [...]

By Jayanti S|2017-10-24T05:51:46+05:30October 24, 2017|Machining|Comments Off

Economics of Machining | Machine Tools | Industrial Engineering

In this article we will discuss about the economics of machining. It is not sufficient to devise a feasible procedure for a desired component or commodity. The procedure must be economically justified. The variables affecting the economics of a machining operation are numerous which include the tool material, machine tool capacity and the cutting conditions. As these variables are readily [...]

By Jayanti S|2017-10-24T05:51:46+05:30October 24, 2017|Machining|Comments Off

Machined Surfaces: Roughness & Accuracy | Industries | Metallurgy

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 [...]

By Jayanti S|2017-10-24T05:51:45+05:30October 24, 2017|Machining|Comments Off

Electro-Discharge Machining (EDM) | Industrial Engineering

In this article we will discuss about:- 1. Purpose of Electro-Discharge Machining (EDM) 2. Machining Accuracy in EDM Process 3. Automation 4. Orbiting Control Facility 5. Advantages 6. Disadvantages 7. Applications. Purpose of Electro-Discharge Machining (EDM): In electrical machining processes, electrical energy is used directly to cut the material to final shape and size. Efforts are made to utilise whole [...]

By Surupa S|2017-07-24T11:54:29+05:30July 24, 2017|Machining|Comments Off

Wire-Cut EDM: Meaning and Features | Methods | Machining | Engineering

In this article we will discuss about:- 1. Meaning of Wire-Cut EDM 2. Features of Wire-Cut EDM 3. Spark Machining. Meaning of Wire-Cut EDM: The wire-cut EDM uses a very thin wire 0.02 to 0.3 mm in diameter as an electrode and machines a workpiece with electrical discharge like a bandsaw by moving either the workpiece or wire. Erosion of [...]

By Surupa S|2017-07-24T11:54:29+05:30July 24, 2017|Machining|Comments Off

Structure of ECM Machine | Machining | Industrial Engineering

The typical ECM machine consists of a table for mounting the workpiece. The tool is mounted on a quill fixed on a ram. Vertical box frame structure has excellent rigidity required and is best suited for precision work. Vertical C-frame structure has less rigidity but offers greater accessibility to the workpiece and tooling. The machine base, worktable and all other [...]

By Surupa S|2017-07-24T11:54:29+05:30July 24, 2017|Machining|Comments Off

Non-Conventional Methods of Machining | Industries | Engineering

In this article we will discuss about the non-conventional methods of machining used in industries. The methods are: 1. Elastic Emission Machining (EEM) 2. Electro-Chemical Grinding (ECG) 3. Hot Machining 4. Electron Beam Machining (EBM). Method # 1. Elastic Emission Machining (EEM): In elastic emission machining process, machining is carried out by a spinning polyuera-thane ball in a suspended liquid [...]

By Surupa S|2017-07-24T11:54:28+05:30July 24, 2017|Machining|Comments Off

Electron Beam Machining (EBM) | Methods | Machining | Engineering

In this article we will discuss about the meaning and characteristics of Electron Beam Machining (EBM) in industries. Meaning of Electron Beam Machining (EBM): In this process, the material is removed with the help of a high velocity (travelling at half the speed of light, i.e. 160,000 km/sec.) focused stream of electrons which are focused magnetically upon a very small [...]

By Surupa S|2017-07-24T11:54:28+05:30July 24, 2017|Machining|Comments Off

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