There are different types of jigs used for machining operations including boring jigs, drill jigs, template jigs, plate jigs, open jigs, leaf jigs, box jigs, and table jigs. Drill jigs can be open or closed and are used to drill, ream, tap, and perform other operations. Template jigs are the simplest with a plate shaped to the workpiece and holes to guide drilling. Plate jigs improve on this with drill bushes instead of simple holes. Open jigs have an open top and drilling is done from one side while closed jigs machine parts on multiple sides. Leaf jigs have a hinged top plate for easy loading. Box jigs have

1. TYPES
OF
JIGS
Dr. P. S. Chaudhari
Assistant Prof.
U. V. Patel College of Engineering
Ganpat University

2. DIFFERENT TYPES OF JIGS
A. Boring Jig :-
• Boring jigs are used to bore holes that either are too large to
drill or must be made an odd size (As shown in Fig.).

3. B. Drill Jig :-
• Drill jigs are used to drill, ream, tap, chamfer, counter bore,
countersink, reverse spot face, or reverse countersink (As shown in
Fig.).
1) Drilling Jigs
2) Template Jig
3) Plate Type Jig
4) Open Type Jig
5) Swinging Leaf Type Jig
6) Box Type Jig
7) Solid Type Jig
8) Pot Type Jig
9) Index Jigs
10) Multi-station Jigs
11) Universal Jig

4. • Drill jigs may be divided into two general types, open and
closed.
• Open jigs are for simple operations where work is done on
only one side of the part.
• Closed jigs are used for parts that must be machined on
more than one side.
• The names used to identify these jigs refer to how the tool is
built.

5. Template Jig
• This is the simplest type of jig; It is simply a plate made to
the shape and size of the work piece; with the require
number of holes made it.
• It is placed on the work piece and the hole will be made by
the drill; which will be guided through the holes in the
template plate should be hardened to avoid its frequent
replacement. This type of jig is suitable if only a few part
are to be made.

6. Plate jigs
• This is an improvement of the template type of jig.
• In place of simple holes, drill bushes are provided in the
plate to guide the drill.
• The work piece can be clamped to the plate and holes can be
drilled.
• The plate jig are employed to drill holes in large parts,
maintaining accurate spacing with each other.

7. Open Jig
• In this jig the top is kept open and workpiece is placed on
the base of the jig and the drill plate.
• Carrying the drill bushes is placed on the top to guide the
tool.
• After the operation is over, the drill plate is removed and
workpiece is replaced.

8. Channel jig
• The channel jig is a simple type of jig having channel like
cross section.
• The component is fitted within the channel is located and
clamped by locating the knob.
• The tool is guided through the drill bush.

9. Leaf Jig
• It is also a sort of open type jig , in which the top plate is
arrange to swing about a fulcrum point, so that it is
completely clears the jig for easy loading and unloading of
the work piece.
• The drill bushes are fitted into the plates, which is also
known as leaf, latch or lid.

10. Box Type Jig
• When the holes are to drill more than one plane of the work
piece, the jig has to be provided with equivalent number of bush
plates.
• For positioning jig on the machine table feet have to be provided
opposite each drilling bush plate.
• One side of the jig will be provided with a swinging leaf for
loading and unloading the work piece, such a jig would take the
form of a box. Such a jig should be as light as possible. Since it
will have lifted again and again.

11. Angular Jig
• This type of jig is used when the hole is drilled at an angle
to the drilling bush axis.
• These types of jigs are used to drill holes in collars and hubs
of pulleys and gears.

12. Table Jig
• This is a type of Plate jig. By adding legs in the construction
of plate jig, the table jig can be constructed.
• Due to this legs jig remains higher than table and large jobs
can be accommodated in it.
• Therefore it is used for larger size components.

13. Thank
You