LASER is the acronym for ‘Light Amplification by Stimulated Emission of Radiation’. LASER is a device to produce coherent light beam which is a narrow beam having high energy density. It is capable to travel vast distance without deviation. It is highly monochromatic, directional and having intense beam of light. Coherent: Two wave source are perfectly coherent if they have […]
Automation And Types of Automation in Manufacturing
Automation is generally defined as the process of having machines follow a predetermined sequence of operations with little or no human labor, using specialized equipment and devices that perform and control manufacturing process. Automation is achieved through the use of variety of devices, sensors, actuator, techniques and equipment that are capable of observing and controlling all aspect of machining process. […]
Numerical Control(NC) and Computer Numerical Control(CNC)
Numerical Control(NC): Numerical Control(NC) is a method of controlling the movement of machine components by directly inserting coded instruction in the form of number or letters in the system. NC are used extensively in small and medium quantity instruction. The system automatically interprets these data and converts them to output signals. These signals control various machine components. For example: by […]
Plasma Arc Machining(PAM)
Plasma Arc Machining is metal removal process in which metal is removed by focusing a high velocity jet of high temperature on the workpiece. When a gas is raised to a temperature of 30000 C, the atoms get ionized. This phase of ionized gas is termed as Plasma. In Plasma Arc Machining, an arc is generated between the hot cathode […]
Abrasive Water Jet Machining (AWJM)
In Abrasive Water Jet Machining(AWJM), the water jet contains abrasive particles(such as Silicon Carbide or Aluminium Oxide)which increase the material removal rate about that of water jet machining. It is an Advanced Water Jet Machining Process that includes Abrasives as a medium. To overcome the disadvantage of water jet machining, the abrasive particles will be added into the water so […]
Electrical Discharge Machining(EDM)
EDM is a non-conventional machining process. Principle : Electrical discharge machining involves a controlled erosion of electrical conductive material by the initiative of rapid and repetitive spark discharge between the tool and workpiece separated by a small gap of about 0.01 to 0.50 mm. Thus spark gap is immersed in dielectric fluid. The controlled pulsing of direct current between the […]
Abrasive Jet Machining (AJM)
The fundamental principle of Abrasive Jet Machining involves the use of high speed stream of abrasive particles carried by a high presssure gas or air on the work surface through a nozzle. The metal removal occurs due to erosion caused by abrasive particles impacting the work surface at high speed with repeated impacts, small bit of material on the workpiece […]
Electrochemical Machining(ECM)
Electrochemical Machining is a non-conventional machining process. Electrochemical machining is another process using electric current to remove the metal, but unlike EDM. It relies on the principle of electrolysis for material removal. Michael Faraday(1791-1867) discovered that if two electrode are placed in a bath containing a conducting liquid and a DC potential is applied across them, then the metal can […]