Difference between Jig and Fixture
Contents
Comparison between Jig and Fixture
Summary:
The Major Difference between Jig and Fixture is that Jig is a type of tool used to control the location or motion of another tool.Whereas Fixture is a support or work holding device used to hold work in place. In metal and woodworking, both jigs and fixtures are essential tools used.
Comparison Chart
| Jig | Fixture |
|---|---|
| It guides the cutting tool. | It does not guide the cutting tool. |
| It is mostly attached to the machine table. |
It is always attached to the machine table. |
| It is generally light in weight than the fixture. |
Fixture is generally heavier than the Jig. |
| Jig feet is used in its construction. | In its construction such feet is not used. |
| Bushes are used in a jig for guiding the cutting tool. |
Bushes are not used in fixtures. |
| It is specially used for drilling, reaming & boring operations. |
It is specially used for milling, turning, grinding operations. |
| Jig is widely used on drilling machine. |
Fixture is widely milling, grinding machines. |
| Jig cost is more. | Fixture cost is less as compared with the jig. |
| Jig designing is complex. | Fixture designing is less complex. |
Jig
- Jig may be defined as a work-holding device generally used in a drill press in conjunction with drill bushings for guiding the tools so that drills will produce holes only where the bushing is located in the drill jig.
- Jig may be also defined as a device used in mass production for increasing productivity by correct location & firmly holding the workpiece as well as guiding the cutting tool.
Fixture
- Fixture may be defined as a device used to increase manufacturing efficiency and productivity in mass production.
- It locates the workpiece incorrect position and holds it firmly but it does not have provision for guiding the cutting tool.
- Set blocks and feeler or thickness gauges are used with fixtures to reference the cutter to the workpiece.
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