There are two methods of attaching the tooling to the machine.
One is fixing the punch or die directly on the upper or lower
beam. The other type locks them by using holders. When using
tooling holders, attach the punch to the punch holder and the
die to the die holder. 
Punch Holder
As shown in Fig. 1, the use of
a punch holder permits the desired shape punch to be attached
as our requirement such as radius rulers of different radii
or coining rulers can be attached there too.
 
Fig.1 Punch holder , radius ruler and various sizes
of coining ruler
Die Holder
Two types of die holders are utilized according to
the type of die.
One type is the die holder used in the bending of sashes.
The other type is the die holder used with 2V dies. The die
holder must be selected in conformance with the shape of the
product.
  
2V Die holder(Height 75 mm.) 2V
Die holder(Height 35 mm.) 1V
Die holder
Die Base
Normally , the problem arises in bending with a 1V
die (type not for sashes) like the lack of bending stroke
due to a large open height of machine. The die base thus is
set under the 1V die in order to increase a die height. (Fig.2)
    
Fig.2
Die base
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