Difference between Jig and Fixture

Difference between Jig and Fixture

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.

 Jig and Fixture Difference
Comparison between Jig and Fixture

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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