A drilling machine comes in many shapes and sizes, from small hand-held power drills to bench mounted and finally floor-mounted models. They can perform operations other than drilling, such as countersinking, counterboring, reaming, and tapping large or small holes. Because the drilling machines can perform all of these operations, this chapter will also cover the types of drill bits, took, and shop formulas for setting up each operation.
HYRAULIDC PRESS BRAKE MACHINE
Machine is produced with high technology and very sensitive tolerances. Tension elimination is done at the parts with large welding. All tension points are designed with large radius and possible weld cracks are eliminated.
MIG WELDING MACHINE
It use a wire welding electrode on a spool that is fed automatically at a constant pre-selected speed. … The process is widely used in construction because of its high welding speed and portability.
PIPE BENDING MACHINE
Pipe bending machines are used to bend pipes to produce finished parts. Pipe are structural, hollow conduits that are used as flow lines for fluids and gases in pneumatic, hydraulic, medical, and process applications. Pipe are measured by their outer diameter and are usually smaller and less rigid than pipes. Pipes are vessels that are used in transport systems for fluids and solids. They generally have a larger diameter and are measured by their inside diameter regardless of the wall thickness. Pipe and tube bending and fabrication equipment is used to perform operations such as bending, swaging, flaring and beading
PORTABLE PLASMA CUTTING
Portable Plasma Cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. Typical materials cutwith a plasma torch include steel, stainless steel, aluminum, brass and copper, although other conductive metals may be cut as well.
Shearing machines are multipurpose devices usedin the cutting of alloys and other sheet metal. Someshearing machines use a scissor-like, angularshear action to cut metal into sheets or strips. Shear action moves progressively from one side of the material to the other.
A power press is a very useful machine used in mass production mainly from cold working of ductile materials such as mild steel. Normally a power press has a rotating flywheel which acts like a storehouse of energy and is used to operate the ram which provides the necessary impact to the workpiece.
The bench grinder is the undergraduate philosophy major of the workshop: a machine that’s obvious, abrasive, and designed to grind every item it encounters to an attenuated shell of its former self. Depending on which wheel you add, a bench grinder can shape, sharpen, buff, polish, or clean just about any metal object
A band saw can be used to cut curves, even in thick lumber, such as in creating cabriole legs, to rip lumber and to crosscut short pieces. The most common usefor the band saw, however, is in cutting irregular shapes. The second most common use is in resawing or ripping lumber into thinner slabs.
BAND SAW CUTTING
SPOT WELDING MACHINESpot welding is one of the oldest welding processes. It is used in a wide range of industries but notably for the assembly of sheet steel vehicle bodies. This is a type of resistance welding where the spot welds are made at regular intervals on overlapping sheets of metal. Spot welding is primarily used for joining parts that are normally up to 3 mm in thickness. Thickness of the parts to be welded should be equal or the ratio of thickness should be less than 3:1. The strength of the joint depends on the number and size of the welds. Spot-weld diameters range from 3 mm to 12.5 mm.
A height gauge is a measuring device used for determining the hight of objects, and for marking of items to be worked on.
Height gauges may also be used to measure the height of an object by using the underside of the scriber as the datum. The datum may be permanently fixed or the height gauge may have provision to adjust the scale
The Vernier caliper is an extremely precise measuring instrument; it is used to measure internal and external distances extremely accurately – the error may be as little as 0.05 mm – depending on the make.The VERNIER is a small movable graduated scale for obtaining fractional parts of subdivisions on a fixed main scale of any measuring instrument. With a normal scale we may be able to measure down to 0.50 mm or so, while with a vernier scale the least count may be 0.10 mm. Usually vernier calipers have both imperial (inches) and metric (mm) scales.
A micrometer is a precision measuring instrument, used to obtain very fine measurements and available in metric and imperial versions. Metric micrometers typically measure in 0.01mm increments and imperial versions in 0.001 inches.
The measurements they provide can be more accurate than those given by other measuring devices such as dial calipers or vernier calipers, but depend very much on the user’s care.
In metrology, the Surface plate is used as a measuring base or a datum surface for testing of flatness of surfaces. Surface plate forms the basis of the measurement. Surface plates are widely used in where the inspection is carried out. …