What are Jigs and Fixtures? Jigs and fixtures are the devices which are used to increase productivity and accuracy in machining process. In general, we use the terms ‘Jig’ and ‘Fixture’ interchangeably for each other but, in reality they are both different terms and used for different applications. Let’s discuss the device Jig and the… Read More »
What is Brazing? Brazing is a metal joining process in which filler metal is melted and filled into the joint. Hence, joins the joint. Brazing does not melt base metal which needs to be joined. It is performed at a temperature above 450 degrees Celsius. Use of flux in Brazing Unless brazing operations are contained… Read More »
In manufacturing industry there are several machining operations which are performed on metal stock but, out of all these operations 20% are hole making. Machine parts require holes for several purposes. In general, we see seven types of holes in manufacturing. Through hole Blind hole Counter bore Blind hole with flat bottom Counter sink Spot… Read More »
What is a Planer Machine? A planer machine is a type of metal working machine that uses linear relative motion (reciprocation) between the workpiece and a single-point cutting tool to cut the work piece. General Bentham invented it. It is very much similar to a shaper but there are some basic differences. A Planer Machine… Read More »
What is a Shaper Machine? A Shaper Machine is a special kind of manufacturing machine that uses liner reciprocating motion of single point cutting tool to generate a linear tool path. Working Principle of the Shaper Machine In the Shaper machine a single point cutting tool is rigidly mounted on the tool holder, which is… Read More »
What is a Hydraulic Press? A hydraulic press is a press which uses hydraulic cylinder to generate compressive force. Instead of a mechanical lever a hydraulic equivalent is used in a Hydraulic press. Joseph Bramah from England invented Hydraulic press. Working principle of Hydraulic Press? Before understanding working of Hydraulic press let us first learn… Read More »
What is a Hammer? A hammer is a tool which has a weighted head fixed on a long handle. It is used to deliver an impact on a small area of an object. A hammer head is generally made up of a heat-treated steel (for surface hardness). Handle of a hammer is generally made from… Read More »
What is Toughness? Toughness is the ability of a material to absorb energy before ultimate failure. Material which can absorb more energy before failure is considered more tough than another material which can absorb less energy. Unit of toughness is Joules per cubic meter. Tests for measuring toughness There are mainly two tests which are… Read More »
What is hardness? Hardness is the property of a material to resist surface indentation (and scratches). Some materials are harder than other materials. For example, metals are harder than plastics, wood etc. Difference between hardness and toughness Hardness is a property which is related to the surface of a material while toughness is a property… Read More »
What is Key? A key is a machine element which is used to connect a shaft to other machine elements like Gears, Pullies, Couplings, Sprockets or Flywheels. Its primary function is to prevent relative motion between connected parts. Functions of the a key It has two basic functions Transmit torque from the shaft to hub… Read More »