This document describes different types of dies used in metal forming processes. It discusses shaving dies, trimming dies, compound dies, combination dies, coining dies, embossing dies, and progressive dies. Shaving dies improve dimensional accuracy and surface finish. Trimming dies cut off excess material. Compound dies perform piercing and blanking in one operation. Combination dies combine cutting with bending and drawing. Coining dies use high stress to induce plastic flow on metal surfaces. Embossing dies use tension to stretch metal into shallow depressions. Progressive dies perform multiple operations on a workpiece at different stations with each press stroke.

1. 5. MISCELLANEOUS DIES
1. Shaving Die
2. Trimming Die
3. Compound Die
4. Combination
Die
5. Coining Die
6. Embossing Die
7. Simple
Progressive Die
8. Compound
Progressive Die

2. 1. Shaving
Die
Shaving is the secondary cutting operation.
It is done by removing a small amount of material from
the previously cut edge.

3. Shaving die

4. Shaving Die
is used
To improve the dimensional
accuracy of the part.
To improve the cut edge
characteristics of the part.
To improve the flatness of
the part.

5. 2. Trimming
Die
Trimming is the operation of
cutting off the parts that have
deviated from the shape.

6. 3.
Compound
Die
This die combines the
principles of the conventional
and inverted dies in one
station.
This type of die may produce
a workpiece which is pierced
and blanked at one station
and in one operation.

7. Compound
die

8. 4.Combination die
• In this die a cutting operation is combined with a bending and
drawing operation.
• More than one operations are possible in one stroke at a single stage .

9. Combination
Die

10. 5. Coining
die
Coining is a form of precision
stamping in which a workpiece is
subjected to a sufficiently high stress
to induce plastic flow on the surface
of the material.
It is a metal squeezing operation
where the male and female dies are
different.

11. Coining die

12. 6.
Embossing
die
Embossing die use tension to
stretch metal into a shallow
depression. The set primarily is
composed of a punch and cavity.
Design is uniform throughout the
thickness of sheet metal.

13. Embossing
Die

14. 7. Progressive
Die
A progressive or follow on die has a series of
operations.
At each station , an operation is performed on a
work piece during a stroke of the press.
Between stroke the piece in the metal strip is
transferred to the next station.
A finished work piece is made at each stroke of the
press.
While the piercing punch cuts a hole in the stroke ,
the blanking punch blanks out a portion of the
metal in which a hole had been pierced at a
previous station.

15. Progressive
die