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What is precision machining?
Feb 15, 2017

Precision machining is the process of cutting components to exact specifications. It generally involves removing the excess from a material or its component bringing it to a level of high tolerance. In simple language, precision machining means shaping large chunks of material into smaller and complicated parts so that they can fit exactly where they are needed and work smoothly to carry out the specified task.

Since machining primarily involves cutting the material into exact shapes as per specifications, machinists use different types of cutting techniques and tools.

Precision Machining

Precision machining is an ever-evolving process. The machinists have always tried to achieve maximum level of accuracy even in the early phases of machining when they used tools such as blades, saws, hacks, hammers and drills to create various shapes out of mostly wood and metal pieces.

As the precision levels of machining became more specific and accurate, the designs of the cutting tools advanced progressively.

The most elementary cutter used to achieve the most basic level of precision engineering is made of cobalt, carbide or HSS. The other popular cutting tool is water whose stream is let out in jet form under huge pressure to wear off the excess material and bring it down to the exact shape. Since these tools need big machines to work, they are generally used only in large engineering companies.

Other tools that are being currently used for CNC precision machining are hot laser beams which are directed at the material to be shaped.

The latest precision machining techniques use computers so as to eliminate any possibility of error. The designs are loaded into the computers which are automatically transformed in a precise machining process. This process is called CNC machining or computer numerical control.

Simply put, CNC machining is used in the manufacturing sector and involves the use of computers to control machine tools. Tools that can be controlled in this manner include mills, lathes, routers and grinders.

CNC machining uses programmed computer numerically controlled CNC devices to achieve highest levels of precision to exact specifications for the products. Blueprints are made using computer aided designing–CAD or computer aided manufacturing-CAM.

Programs are being developed to create complicated 3-D diagrams and blueprints to design and manufacture tools and machines. The products are manufactured using complicated lathes, drilling presses, milling machines, grinders, saws and even high speed robots.

The materials used for machining the objects include bronze, steel, glass, wood, plastics, graphite and many more.

High velocity precise machining is being used  for making aircrafts, cars, alarm clocks, entertainment machines, phone parts, kitchen equipment, fine surgical tools and a large number of large and small objects that we use daily without realizing the extent of precision machining that might have been used to create them.