10-04-2013, 04:15 PM
Design of Press working Tools
Design of Press.pdf (Size: 2.22 MB / Downloads: 236)
Stock Strip Layout
Since, the components are to be ultimately blanked
out of a stock strip, hence , precaution is to be taken
while designing the dies for utilizing as much of stock
as possible.
It is also necessary in progressive dies, to ensure
continuous handling of the scrap on the die block,
which means that the scrap strip should have
sufficient strength.
Centre Line of Pressure
Shearing should be symmetrical about the axis of the
ram.
This ensures no side thrust.
To do this, the point on the die block is to be found
out, through which the resultant of all the shearing
forces is acting and this is coincided with the ram
axis.
This point is called the centre line of pressure.