Welding is a process of joining metal parts by means of heat and pressure,which causes fusion of parts(resistance welding), or by heating the metal to fusion temperature,with or without addition of weld metal (fusion welding)

A machine is a combination of interrelated bodies, links or elements, which are characterized by being resistant and in general, rigid. These links are sop chosen and arranged that in operation they can

A welded joint is a permanent joint used extensively in fabrication process. An electronic process for fusion welding arc or gas welding is used for fusion of the material. It is also used for repair work build up a small part that has broken off e.g. to repair a worn surface.

The center distance of a pair of meshing spur gears is the sum of their pitch circle radii. One of the advantages of the involutes system is that small variations in the center distance do not affect the correct working of the gear.

Gear is a cylinder, wheel, or disk on the surface of which are cut parallel teeth. Spur gear is used to transmit power from one shaft to another in cases where those shafts have their axis parallel.

This type gear is a cylindrical, wheel, or disk on the surface of which are cut parallel teeth. The larger gear is called the gear and the smaller, the pinion. Usually when two gears in mesh and one is larger than the other, the names gear and pinion are replied.

Pins are the example of fastening of a general type that is finding increasingly popular application in machinery, especially in light machinery parts. Pins may be used in straight or tapered forms in function.

A milling machine is so named because it may be adapted to a very wide range of milling operation the table of milling machine is mounted on a circular swiveling bag which has degree graduation, and the table can be swiveled to any angle up to 45 on either side of the normal position.

Milling machine may be defined as the type of machine in which the metal is removed by causing the job to be fed against a revolving cutting tool called the milling cutter. There are two main types of milling machine...

The milling cutters are revolving tools having one or several cutting edges of identical form equally spaced on the circumference of the cutter. The cutting elements are called teeth.