Table of Contents
Introduction:
Jig and fixture are production tools used to accurately manufacture duplicates and replaceable parts. They are specifically designed so that numerous components can be machined or assembled identically, ensuring component compatibility. There is no need to make special settings for each individual part.
What is Jig?
A jig is a tool wherein a factor is held and positioned for a particular operation in this kind of manner that it’ll manual one or greater reducing gear to the equal quarter of machining. The typical machining operation for jigs are drilling and reaming.
Jigs are commonly geared up with hardened metal bushings for steering drills or reducing gear. Some common types of jigs are drilling jigs, reaming jigs, meeting jigs etc. Used jigs are not fixed to device gear or desk however are unfastened to be moved on the way to allow the right registering of the work and the tool.
What is Fixture?
A fixture is a production tool that positively positions, holds, and supports a workpiece in a fixed orientation relative to the tool so that the required machining operations can be performed.
Device designs range from relatively simple tools to expensive and complex devices. Most commonly mounted on machine tools or tables. The most common equipment is milling equipment, broaching equipment, assembly equipment, etc.
Pros:
- Production processes is highly efficient.
- Production work is fast.
- Reduced manufacturing costs.
- Complex and heavy parts can be machined easily.
- High clamping rigidity enables high speed, high feed and high depth of cut. The
- jig and fixture enhance machining accuracy.
Difference Between Jig and Fixture
| Jigs | Fixtures |
|---|---|
| A jig provides necessary information to machine tool. | A fixture is used to hold object while doing machining operation. |
| Its main work is to ensures accuracy, repeatability, and interchangeability. | It is used to avoid error in machine operation. |
| It is not heavy. | It is very heavy compared to the jig. |
| Jigs can be firmly placed and held by hand pressure. | It is normally placed firmly on a machine table. |
| Its key functions are drilling, reaming, tapping, and boring. | It is normally used in milling machines, slotting machines, and shapers |
| Jig is very expensive. | Fixture is cheap compared to jig. |
| Jigs needed intricate design operations. | Fixture design operations are relatively easy. |