Jigs & Fixture

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Jigs and fixtures are special purpose tool which are used to facilitate production (machining, assembling and inspection operations), when work piece is based on the concept of interchangeability according to which every part will be produced within an established tolerance.

A jig may be defined as a device which hold and position the work; locate or guides the outing tool relative to the work piece and usually not fixed to the m/c table. It is usually lightly in construction.                                                                            

A fixture is a work holding device and position the work; but doesn’t guide locate or position the cutting tool’ the setting of the tool is done by machine adjustment and a setting blocker using slip gauges. 

1. Jigs and fixtures are used to reduce the cost of production as there use elimination being out work and setting up of tools. 
2. To increase the production.
3. To assure the high accuracy of the parts.
4. To provide for interchangeability.
5. To enables heavy and complex shaped parts to be machined by holding rigidly to a machine. 
6. To control quality control expenses.
7. Less skilled labor.
8. Saving labor.
9. There use partially automates the machine tool.

              Improve the safety at work, thereby lowering the rate of accidents.